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Amateur Work Magazine Vol5



A Monthly Magazine Of The Useful Arts And Sciences, containing illustrated articles descriptive of electrical and mechanical apparatus, furniture and other useful articles, games, photography, model making, boat building, etc

TitleAmateur Work Magazine Vol5
AuthorMiscellaneous Authors
PublisherDraper Publishing Company
Year1906
Copyright1906, Draper Publishing Company
AmazonAmateur Work: A Monthly Magazine Of The Useful Arts And Sciences
-Efficient Vibrator For Spark Coils
John E. Atkins It is sometimes disappointing to the amateur, after assembling primary and secondary of a coil designed for a three or four inch spark to find, in spite of all the primary current av...
-Acetylene Gas Engines
J. K. Rush Until recently it has not been practical to use acetylene for gas engines, owing to the fact that but very few acetylene generators generate acetylene at a temperature low enough to obta...
-A Magazine Cabinet
John F. Adams About every one, in these days of magazines, regularly receives several magazines, some of which are kept on file, and to which reference is made at frequent intervals. To such reader...
-Acetylene Blow-Pipe
An acetylene blowpipe is described in the Mechan-cal Engineer, London, due to one Fouche. This tool consists of a flame of acetylene gas blown in the usual way with a blowpipe, but with oxygen gas, ...
-Importance Of Trade Schools
To be educated, in days gone by, meant simply to have one's mind stored with information gleaned from books. To be taught how to make a practical application of knowledge was not considered necessary....
-Oil In Boilers Cause Of Failure
That many of the so-called mysterious collapses of furnaces in apparently clean boilers is due to the presence of oil is the contention of an English engineer. He maintains that if the surface of the ...
-A Cheap Nine-Inch Reflector. VI. Continued Testing of Lenses
M. A. AINSLEY A few additional directions for testing will probably be of service to the reader. My mirror was supported on a large board, the lower edge of the mirror resting on a ledge screwed...
-A Cheap Nine-Inch Reflector. Continued Testing of Lenses. Part 2
The figuring or alteration of the curve from A to B and then through C1 to C2 is to be managed. It is evident that we want to flatten the edge of the mirror so as to increase the focus of that par...
-Rush Chair Seating
Arthur Maetkzer The use of rushes for the seating of chairs, settees, etc., is gradually gaining favor in the public taste, and although a large number of people are erroneously of opinion that thi...
-How To Paint A Bath Tub
Assuming that it is an old metal tub which has never been painted. First - the tub should be thoroughly cleaned. To do this, wash it with soap and water, or with soda, or with sapolio, in order to ...
-Removing Old Paint
In answer to the question of a reader of its columns as to what will remove old paint and hard oil from any surface, a recent issue of the Painter's Magazine contains the following, which may be of ...
-A Table Lamp
John F. Adams Table lamps, other than those of a very plain character, are relatively expensive when purchased. A very attractive lamp can be made, however, as herein described, at a most moderate ...
-Introduction 1
We are frequently in receipt of letters from subscribers who, having purchased one or more of the early volumes bound in cloth, desire to exchange the separate copies of subsequent years for bound vol...
-Introduction 2
We are frequently in receipt of letters from subscribers who, having purchased one or more of the early volumes bound in cloth, desire to exchange the separate copies of subsequent years for bound vol...
-Flash Signs; How To Make Them
T. B. Meyer The following, with accompanying diagrams, gives full directions for making an electric flash sign, such as is used extensively at the present time in the larger cities, principally for...
-Photography. Photographing Skies
To those who have the faculty of translating color into black and white, the sky is rendered more or less gray, in its monochrome equivalent, and never as white as the paper on which the picture is pr...
-The Wimshurst Machine And X-Ray Work. I The Tubes And Tube Stand
T. E. Eskin The questions confronting the beginner in the use of the Wimshurst are so many that perhaps it may be of service to put on record one's experiences, with the hope that they may be usefu...
-Electric Batteries. Their Construction And Uses. III. Internal and External Resistance - Grouping of Cells
FREDERICK A. DRAPER Before taking up the construction of different types of batteries, it will be well to understand how best to group cells to secure the most efficient service from them, as such ...
-"Wireless" Receiving Station
Oscar N. Dame In constructing a receiving outfit, the same aerial and ground is used, and provision is made by a jack-knife switch by which the aerial may be shifted from receiving to sending at wi...
-New Method Of Mining Coal
Consul-General Holloway, of Halifax, reports that the Dominicn Coal Company, Glace Bay, Nova Scotia, is testing a machine intended to take the place of explosives. It is a Hydraulic cartridge, said to...
-Electrical Protective Devices
Arthur H. Bell Aerial lines of telegraph companies were the first wires requiring lighting and foreign current protection. Long pole lines, stretching far out into the country, rarely escape injury...
-Why Steel Can Be Cut Faster Than Iron
Arthur H. Corby, before the Sanford Science Students Asso. With all the tool steels working on steel at high speeds, the continual rubbing of the shaving on the upper surface of the tool wears more...
-The Metal Working Lathe And Its Uses. VII. Boring Cylindes on Faceplate
ROBERT GIBSON GRISWOLD In the last chapter, the boring of a cylinder that could be clamped to the carriage was considered. It is not always possible, however, to clamp some shapes to the carriage a...
-How To Make A Pantagraph
To those who possess but little drawing ability a pantograph will be found of the utmost service for enlarging and transferring copies of designs from paper on to wood, such as is required for fretwor...
-American Society Of Model Makers
Organization of the Society Under Way. The many responses from all sections of the country to the suggestion in the October number regarding the forming of an American Society of Model Makers sho...
-Books Received 1
How to Draw. Leon Barritt. 107 pp. 9x12 in. Numerous illustrations. Harper & Bros., New York. Price $2.00 The basic principles of illustration are set forth in this book in a simple, practical way...
-Science And Industry 1
The substitution of oil for water in cooling cylinders of gasoline engines does away with any risk of damage to the engine by freezing and expansion of the water jacket. Small engines can be cooled wi...
-Vertical Filing Cabinet
John F. Adams The filing of letters by what is known as the vertical method is rapidly replacing the old method of letter files with firms receiving any considerable number of letters, especially w...
-The Metal Working Lathe And Its Uses. VIII. Drilling Accurately on Drill Press
Robert Gibson Griswold Those who have attempted to drill or bore an accurate hole on a drill press know just what a difficult operation it is. This is due to the fact that, no matter how carefully ...
-Banker And Customer
It is sometimes said that a banker to whom a customer has paid in moneys for his current account is a trustee of such monevs, but this is a mistake. The true relation between a banker and customer is ...
-Electric Batteries; Their Construction And Uses. IV. The Secondary Cell or Accumulator
Frederick A. Draper The wide variety of batteries described in the catalogues of electrical supply houses are a source of perplexity to the purchaser who is without technical knowledge or experienc...
-Books Received 2
Experiments in Applied Electricity. Arthur J. Rowland and William B. Creagmile. 181 pp., 8x5 1/2 in. 59 illustrations. Cloth. Price $1.50. McGraw Publishing Co., New York. The purpose of the ...
-An Easily Built Power Launch. I. Bill of Materials and General Directions
By Courtesy of the Brooks Boat Mfg. Co. The power boat to be described in these chapters will meet the needs of anyone desiring to build a fast, safe boat which shall also be easy of construction b...
-Photography. Photographic Post Cards
C. F. Potter. Jr The making of photographic post cards is a feature of camera work that does not seem to be receiving as much attention by amateurs in this country, as has been the rule abroad. ...
-Photographic Notes 1
Many amateurs are perplexed when their prints sometimes appear lighter in the center than at the edges; these effects are often caused by pouring the developer on to the center of the plate, instead o...
-The Steam Turbine
Abstract of a Paper by F. C. Gasche presented before the Steel Works Club of Joliet, 111. In contradistinction to the reciprocating engine, the fundamental principle of the steam turbine lies in th...
-The Steam Turbine. Continued
With the peripheral speed of the buckets set at 1350 feet a second, the diameter of the turbine wheel will determine the number of revolutions a minute which in small machines is as high as 30,000, an...
-Cost Of Carrying The Mail
Harper's Weekly produces the following information on this subject: The United States pays the railroads, for carrying mail about $41,000,000 per annum. This sum is further increased to $46,000,...
-Introduction 3
A Commission of Technical Education was appointed early in the present year by the Governor of Massachusetts to investigate the subject of technical education and report to the next General Court. Wit...
-The Wimshurst Machine And X-Ray Work. II. Useful Accessories and Methods of Using
T. E. ESKIN We will now, before we go any further, look at the Wimshurst itself and give some account of the results of small improvements that have been made. First of all we look at the conductor...
-The Wimshurst Machine And X-Ray Work. Useful Accessories and Methods of Using. Continued
We now come to the question of spark-gaps, and at the very outset one may say that each tube requires different treatment. Sometimes it has been advised to place the balls as near as possible to the t...
-Hothouse Cultivation Of Fruits
Consul-General Roosevelt, writing from Brussels, tells of the development of the hothouse-grape industry and the extension of hothouse cultivation to other fruits and vegetables. He reports: About ...
-Time Distribution By Telephone
The Observatory of the Bureau of Longitudes of Paris, says the Electrical Review, is adopting a new method of time distribution by telephone. It is intended to be used in regulating chronometers and...
-A Cheap Nine-Inch Reflector. VII. Continued Testing of Lenses
M. A. AINSLEY Before passing on to describe the tube and mounting I employed, I must say something as to the procedure in case of over-correction. If the polisher is made as I suggest, and the pitc...
-Directed Wireless Telegraphy
Early in July some experiments were conducted at Strasburg by Dr. Ferdinand Braun with a system of directed wireless telegraphy which he has invented. The results seem to him very promising, for he wa...
-Inexpensive Wireless Relay
Arthur H. Bell Amateurs desiring a sensitive relay for their wireless receiver at moderate cost, have been unable to find anything in the open market cheaper than the 150 ohm telegraph relay of gen...
-A Trousers Stretcher
William C. Kendall The writer has tried many different patterns of trousers stretchers, but for convenience in applying or removing, as well as simplicity of manufacture, has found nothing which co...
-A Work Bench
John F. Adams A good work bench is a great aid in turning out work, greater accuracy being secured as well as greater rapidity, yet how many, especially amateurs, are to be found working at some ma...
-A Tool Grinder
Ray L. Southworth A device that has proved to be very useful and prac tical, also a formidable rival of the grindstone or emery wheel when these are not available, is shown in the drawing. An e...
-Just Good Enough To Discharge
I chanced to be in one of the largest wholesale houses of this city not very long ago and heard the manager talking with hope of his lieutenants about giving a certain young man employment. The manage...
-New System Of Wireless Telegraphy
Oscar N. Dame Passengers on the Sound Line Steamers plying between New York City and local ports in conjunction with the N. Y., N. H. & Hartford R. R., have become familiar with a new wireless inst...
-Correspondence 1
No. 115. Plainfield, N. J., Oct. 24, '05. Will you please tell me if granulated carbon could be used in the coherer (wireless) instead of nickel or other metal filings, thereby eliminating the deco...
-Trade Notes 1
The accompanying illustration shows a new device made by the New Britain Machine Company, New Britain, Conn., for the hand filing of band saws. It consists of a specially designed automatically-closin...
-Burglar Alarm For Safes
Frederick A. Draper The numerous and daring robberies repeatedly chronicled in the daily papers, where stores, banks and post offices have been entered, the safe blown open and contents taken, woul...
-A Simple Paste
A simple paste, easily made and that will keep a year, is made as follows: Buy at the druggist's an ounce of the best gum tragacanth. Pick clean and put in a wide mouthed glass or white ware vessel t...
-Photographing Electrical Discharges
By A Hobiest Like most of the human race, I have hobbies, and one of them is photography. In this most interesting pursuit I delight in attempting unusual subjects, overlooked by the eagle eye (or ...
-Tiny Working Model Engine
A tiny working model of a triple expansion engine, made by Robert Bunge of New York, is perhaps the finest piece of skilled work of its kind that has ever been brought to the attention of ourcontempor...
-Must Have Eyes To Find Way
In China many hundred of people live their entire lives on boats. Among them there is a strange idea that a boat must have an eye painted on its bow in order to see its way through the water. An Engli...
-Books Received 3
Dies ; Their Construction and Use for the Modern Working of Sheet Metals. By Joseph V. Wood-worth. 384 pp. 9 x 5 1/2 inches. 505 illustrations. Price $3.00. The Norman W. Henley Pub. Co., New York. ...
-A Cheap Nine-Inch Reflector. VIII. Mounting and Adjustment of Lenses
M. A. AINSLEY As it will be necessary, in order to finally test the performance of the mirror in the telescope, to get it into good adjustment, I will briefly describe how this is done. It is ne...
-Method Of Making Fine Wire
A new method'of forming very fine wires by an elec trolytic treatment has been recently brought out at Paris by H. Abraham, a well-known physicist. The process consists in diminishing the section of a...
-Casting In Plaster Molds
Albert T. Salt The fact that plaster of Paris is capable of reproducing the most minute design upon a pattern has caused it to be used for casting metals when the most exact impression of the patte...
-Casting In Plaster Molds. Continued
The wood strips are now held down by some lead weights or other suitable methods. The nowel, which this really is, is now ready for the plaster of Paris. The asbestos is mixed with water to the consis...
-An Easily Built Power Launch. II. Construction of Moulds and Frame
By Courtesy of the Brooks Boat Mfg. Co. Construction will begin with the keel. Mark out with pattern, marking lines across the keel at the places where the moulds come, being careful to get them ex...
-Introduction 4
The rapid increase in our subscription list during the past few months is very gratifying to the publishers of this magazine. The wide territory from which subscriptions have been received enables us ...
-A Corner Cupboard
Charles R. Blaisdell Those of us bachelors, young or old, who are obliged to make one room serve the purposes of a suite, may find the corner cupboard here described of assistance in providing addi...
-The Problem Of The Gas Turbine
Abstracts from an address by A. Dougal Clark, Prest. of the Junior Institute of Engineers, London. The wonderful success obtained by your distinguished Past-President, the Hon. C. A. Parsons, and h...
-The Problem Of The Gas Turbine. Part 2
Success by this cycle of operations requires (1) A rotary or turbine compressor of high relative efficiency (2) An expanding nozzle which shall insure that free expansion is quantitatively equivalent ...
-The Problem Of The Gas Turbine. Part 3
The impact, for example, of swiftly moving gases on a fixed surface ultimately results entirely in turbulent motion, which restores to the gas or to the blade struck all the heat which has disappeared...
-Photography. Watertone Sepia Printing Paper
James Thompson Sepia watertone papers, simple to work and cheap withal, are not a novelty, and to some it may seem su-perflous for me to instruct the amateur worker as to a manner in which he may p...
-A Substantial Screen
John F. Adams Now is the season of drafts made manifest by sundry colds, unless measures are taken to guard against them by means of screens; the one here described being quite attractive and yet n...
-Artificial Diamonds
Consul-General Guenther of Frankfort, writes concerning the most recent efforts for the production of artificial diamonds, as follows: Crystallized carbon, as chemistry has taught for a long time, ...
-A Villiage Telephone Exchange. I. General Prospectus of the Exchange
LAWRENCE V. STEVENS In previous numbers of this magazine have appeared details of telephone instrument construction calculated to give the amateur a clear and concise idea of the apparatus and theo...
-Marking Steel Tools
Marking steel tools is sometimes done by an etching process, carried out as follows: A rubber stamp making white letters on a black ground is required. Then an ink to use with this stamp is made with ...
-A Barometer In The Home
H. M. Chadwick The barometer, always an ornamental instrument, is easily discovered to be interesting and instructive also, if one takes the readings and records them rightly. This can be done b...
-Modelsteam Engine
The illustration shows a model horizontal steam engine, obtained in England by Mr. F. S. Parsell of New York, together with several others, one of which has already been described in these columns. It...
-Poisonous Effects Of White Lead
Consul-General Mason of Paris, furnishes a report on the agitation that has been in progress for some time in France against the use of white lead in preparing paint for industrial purposes. The consu...
-Correspondence 2
No. 116. Newport, R. I., Dec. 12, 1902. I have read in the columns of Amateur Work several articles about spark coils and interrupters. I take the liberty to ask a little advice about them. I wound...
-Science And Industry 2
A respiratory apparatus for firemen, invented by Mr. Charles E. Chapin,a draughtsman who lives in Berkeley, Cal., consists of a hood lined with oiled silk to cover the head and an air cylinder which i...
-Trade Notes 2
The Gunter scale, for decades a valuable aid to engineers, surveyors, navigators, etc., has recently been entirely superseded by the Mannheim Slide Rule. This has nowadays proved itself to be indis...
-Burglar Alarm For Safes. II. Electrical Instruments and Circuits
FREDERICK A. DRAPER As mentioned in the previous chapter, the electrical arrangement consists of two closed circuits of sufficiently different strength so that short circuits or breaks, whether int...
-Sharpening A Scraper
Frank G. Odel The following directions for sharpening a scraper will be of interest to the many readers interested in woodworking. I presume that every reader understands that the cutting edge o...
-Making Fire In Luzon
For making fire in the Philippine Islands there is a curious contrivance used by some few of the natives of Northern Luzon. It consists of a hardwood tube of about one centimeter bore and 6 centimeter...
-To Tell Iron Or Steel Pipes
Iron and steel pipes can be distinguished, the one from the other, very often by means of their appearance. Iron pipe is rough, and the scale on it is heavy, whereas the scale on steel pipe is light a...
-Castor Oil As A Lubricant
Castor oil as a lubricant is in extensive use in some countries. In Australia, which imported 769,362 gal in 1898, its chief use is officially stated to be as lamp oil, and the decline in imports in 1...
-Adjustable Tool Holder For Grinding
Wm. C. Henderson The device about to be described was originally designed and made for the purpose of grinding gouges used for wood-turning. Such gouges, when newly purchased, are not generally ful...
-To Remove Stains From Marble
To remove stains from marble, mix quicklime with strong lye to the consistency of thick cream, and brush this on the marble. Leave for twelve hours and then wash off. If this is of no avail, mix 4 oz....
-A Cheap Nine-Inch Reflector. Mounting
M. A. AINSLEY In deciding on the mounting to be adopted for the 9 in. telescope, I was guided principally by consideration of expense and of the possibility, or otherwise, of getting the work done....
-A Cheap Nine-Inch Reflector. Mounting. Apparatus
Apparatus A deep porcelain vessel, about 1/2 in. larger all round than the mirror and preferably with a flat bottom. A 4 oz. measure, and one of 1/2 oz. graduated in minims. Two or three large glas...
-A Cheap Nine-Inch Reflector. Eyepieces
Eyepieces Three at least will be required, and they can be obtained second-hand for about $2.50 or so. The most convenient power to start with are about 7, 15, and 30 to the inch of aperture, givin...
-Wireless Telegraph In Alaska
Gen. Greeley, chief signal officer of the army, speaking of wireless telegraph work in Alaska between St. Michael and Nome, says: This is the only long distance wireless telegraph system in the world...
-Saved By Wireless Telegraph
The story of a 29 hours' struggle to keep from sinking at sea, during which time the vessel's hull once disappeared partly under water, and in which wireless telegraphy finally brought rescue, was rep...
-Photography. Flashlight Photography For Amateurs
Harry L. Sheperd, B. S In an exchange notice which I read a few days ago, I noted that a member had for exchange flashlights, 3x6 in size, of groups. The subjects for exchange did not appeal to me ...
-A Hall Clothes Rack
John F. Adams The clothes rack here described is suitable for small halls where space is limited, and whatever arrangement is provided for holding the outer garments of visitors must of necessity b...
-Care Of The Lathe
The cleaning and lubricating of a lathe is considered in an article in the Bazaar by H. J. S. Cassal, who says with regard to cleaning, that the balls should frequently be taken out of the ball thru...
-Introduction 5
The formation of the American Society of Model Engineers is about completed. The constitution and by-laws are in press, and copies of same will be mailed to all who have written us expressing a desi...
-A Combined Smelting, Heating, Tempering And Annealing Furnace
Robert Gibson Griswold Small tools, dies, etc., can hardly be satisfactorily handled in the flame of a blast lamp or in an open fire, as great risks are run which may result in the burning of the p...
-Chipping Castings
The well nigh lost art of chipping castings is described in an article of the Mechanical World, which states that in the large modern shop of today there are but few apprentices who can do a credita...
-An Easily Built Power Launch
By Courtesy of the Brooks Boat Mfg. Co. III. Planking - Deck - Installing Engine. The ribs and side timbers are the up and down pieces on the outside, that extend from the bottom of the bilge st...
-An Easily Built Power Launch. Continued
The covering boards (marked cover board in Fig. 16) are first put on. These are shaped by laying the material on top and marking in from below. The covering boards are the full width from the outside ...
-Cement Mortar And Concrete
PHILIP L. WORMELEY, JR. I. Cement and Cement Mortar. The term hydraulic cement is applied to one of most useful materials of engineering construction and one which in recent years has become wid...
-Cement Mortar
Cement mortar is an intimate mixture of cement and sand mixed with sufficient water to produce a plastic mass. The amount of water will vary according to the proportion and condition of the sand, and ...
-Materials Fob Making Concrete
In securing sand for mixing mortar or concrete, if it is possible to select from several varieties, that sand should be chosen which is composed of sharp, angular grains, varying in size from coarse t...
-Books Received 4
Practical Pattern Making. F. W. Barroows. 326 pp. 7x5 in. 148 Illustrations. Cloth. Price $2.00, The Norman W. Henley Pub. Co., New York. It requires the reading of but a few pages to disclose the fac...
-A Village Telephone Exchange. II. House Instruments and Switchboard
LAWRENCE V. STEVENS In canvassing the town for subscribers the manager has secured 19 signatures, and eight more citizens have signified their willingness to subscribe as soon as operations are beg...
-A Variable Resistance Set
Warren S. Preston In wireless telegraph experiments there is occasional need of a variable resistance to be introduced in the different circuits, especially in the coherer and relay circuit, where ...
-A Simple Relay
Oscar N. Dame Among my possessions was a bell ringer coil, about 3 in. long, with outside diameter of one inch and core diameter | of an inch. Originally the coil, or electromagnet, as it may be be...
-Correspondence 3
No 119. Frederickton, N. B., Dec. 6, '05. I would like very much to have you answer the following questions: Is there any process for restoring the transparency to old tracing cloth that has bec...
-Experimental Apparatus. For Currents Of High Frequency And Tension
Oscar F. Dame The ordinary induction cell under certain adjustments gives a flaming spark, which we might call high frequency in comparison with the normal output, when we adjust the vibrator at it...
-An Occasional Desk
John F. Adams The desk here described will probably interest pupils in manual training schools who are looking about for some article of furniture which they can make and show to friends as evidenc...
-Books Received 5
Forge Practice. John Lord Bacon. 257 pp. 7 1/4x 4 3/4 inches. 272 illustrations. Cloth, $1.50. John Wiley & Sons, New York. The increased attention now being given to this subject in manual t...
-A Hand Drill Press
Herbert O. Bacon The frequent breaking of small twist drills when used in a hand drill upon metal, led me to make the holder for the hand drill with foot-power feed, which is here described, and th...
-A Blow Syringe
A discarded bicycle pump was utilized to make a blow syringe which has been extremely useful about the house, especially in removing dust from the piano, and a description is given with the hope that ...
-Faith And Persistance
In that very human little story Mrs. Wiggs of the Cabbage Patch, appears this sentence: Leaders of great enterprises must, of necessity, turn deaf ears to words of discouragement, Which is to say...
-Cement Mortar And Concrete. II. Methods of Mixing Mortar
PHILIP L. WORMELEY, JR. Cement concrete is the product resulting from an intimate mixture of cement mortar with an aggregate of crushed stone, gravel or similar material. The aggregate is crushed o...
-Mixing By Hand
In mixing concrete by hand a platform is constructed as near the work as is practicable, the sand and aggregate being dumped in piles at the side. If the work is to be continuous, this platform should...
-Depositing Concrete
Concrete should be deposited in layers of from 4 to 8 inches and thoroughly tamped before it begins to harden. The tamping required will depend upon the consistency of the mixture. If mixed very dry i...
-To Face Concrete
A coating of mortar one-half inch in thickness is frequently placed next the form to prevent the stone or gravel from showing and give a smooth and impervious surface. If in preparing this mortar fine...
-Photography. A Simple Enlarging Apparatus
E. Stanley Thomas I propose to describe a simple form of enlarging apparatus that I have had in use for anumber of months and which I believe will interest the readers of this magazine. The diagram...
-Photographic Notes 2
There is a little trick in the mounting of prints that is well worth adopting. That is to say, it may be of advantage to those who mount their prints when dry. In my immediate household there are thre...
-Installing Gasoline Engines
It is the usual thing for the average purchaser of a gasoline engine to hunt up some corner in which to put his engine so as to be out of the way. Now this is one of the biggest and most expensive mis...
-Influence Of The Earth In Wireless Telegraphy
A good deal of interest has been shown recently in the statement that grounding a wireless telegraph station impairs considerably the efficiency of the station. The London Electrician in its issue...
-Introduction 6
Wireless telegraphy has occupied a prominent place during the last few years in the public and trade press. In its early days most extravagant claims were made as to its field of operation, but these ...
-Reading Covers And Portfolios
G. W The materials required are bookbinders' mill-board, some tape or narrow ribbon, various sheets of paper and some ordinary wheat-flour paste. The tools are a T-square, a straight, flat ruler...
-Easily Made Weather Indicators
N. Sharpe The primary factor in all kinds of weather is the moisture which is always present in varying quantity in the atmosphere. The second factor - the pressure of the air - depends upon the fi...
-Wanted - Level Headed Men
You may be smart, shrewd, cunning, long-headed, you may be a good scholar, very clever - even brilliant - but are you sound? That is the question everybody who has any dealings with you will ask. Are ...
-Scaffold Knots And Hitches
There is a great lack of knowledge among workmen generally with regard to the tying of rope for scaffolding, and when it is considered that during the erection of a building the workman lives, as it w...
-The Heat Of The Sun
The heat of the sun never penetrates more than 100 feet below the earth's surf ace, and at which depth the thermometer remains at 62 F. throughout the year, whether in the Arctic or tropical zone...
-Care And Management Of Belts
W. A. Dow The object of this article is to bring before the readers of this paper a lesson on the care of belts and the placing of pulleys, adjustments and tightness. In placing a belt around tw...
-A Knife Cleaning Machine
C B The knife-cleaning machine illustrated at Fig. 1 is a strong and serviceable article, and can be made without the aid of any expensive tools. Fig. 2 is an elevation of the machine. The baseboar...
-A Village Telephone Exchange. III. Running Line Wires - Fuse Board
LAWRENCE V. STEVENS In installing the switchboard at the central office in the general store, the experts from the supply house will attend to all the details of wiring and testing out the circuits...
-A 9-Foot Rowing Or 12-Foot Power Tender. I. Lines and Moulds - Tables of Offsets
CARL H. CLARK The two boats described in the present series of articles are designed to be of the canvas covered variety. This method of construction is very simple and easily carried out, thus bei...
-A 9-Foot Rowing Or 12-Foot Power Tender. Lines and Moulds - Tables of Offsets. Continued
The shapes of the cross-section or moulds are next to be laid off using table No. 2. Although in the drawing the shapes of the several moulds are shown together for convenience, for use they should ea...
-Correspondence 4
Ng. 127. So. Orange, N. J., Jan. 31, '06. In an article recently published in Amateur Work on induction coils by Mr. Graves he says a coil should be wound in sections. Does he mean cross sections o...
-A Bench Shaper
Charles H. Farnham The amateur mechanic who wishes to do much of anything in metal working, generally has more or less work which calls for the use of a shaper, or at least Plan of Shaper. ...
-Mica Mining In India
Mica mining in India it done by coolies, both men and women, whose wages average three annas. 4 cents, a day for the men. and 6 pice, 2 cents, for the won en. The former act as miners, and the latter ...
-Induction Coil Making For Amateurs. I. Apparatus Needed. Waxing Can
FRANK W. POWERS The amateur electrician, and especially the one interested in wireless telegraphy, soon reaches a point in his work when the desire becomes pressing for a spark coil of more than to...
-A Village Telephone Exchange. IV. Running Lines - Passing Partitions
LAWRENCE V. STEVENS The construction of telephone lines, particularly in Jefferson, must not be considered as the mere fastening of wires to almost any kind of pole or tree simply because it was pr...
-Coal For Jewelry
Coal as an ornament in jewelry is being used in Japan. According to the Horological Journal, only the hardest and most perfect of the bits are used, and the workers in coal from whom the jewellers...
-A 9-Foot Rowing Or 12-Foot Power Tender. II. Setting of Frame - Planking
CARL H. CLARK As a boat of the present type is of rather light construction, it is necessary to make some kind of frame-work to hold the several parts in place while they are being fitted and faste...
-A 9-Foot Rowing Or 12-Foot Power Tender. Setting of Frame - Planking. Continued
With the fastenings thus described the form should be so stiff that it can be lifted about and turned over with no possibility of springing out of shape. It may thus be worked upon either side up as m...
-Hack-Saw Attachment For Lathe
G. T The hack-saw attachment shown in elevation and plan as Figs. 1 and 2 can be removed and replaced as quickly and easily as a face plate and T-rest, and is of a size to suit a 6 in. center lathe...
-Dry Powder Fire Extinguishers
Dry powder fire extinguishers were much advertised at one time, but in a presidential address recently delivered before the American society of Mechanical Engineers, Mr. John R. Freeman said that the ...
-A Small Lighting Plant. How One Young Man Made A Start In Business
The question has been asked - what is the minimum size of town that will support a lighting plant? That there are thousands of small villages or hamlets all over the country where an enterprising man ...
-Introduction 7
The recent revival of electrical treatment in medical practice, and new discoveries and inventions resulting from the more scientific methods followed in investigating this class of phenomena, will un...
-A Library Table
John F. Adams The library table here described has a substantial, dignified appearance which makes it well suited for the service for which it was designed, and at the same time the simple construc...
-Books Received 6
Practical, Lessons In Architectural Drawing. William B. Tuthill, A. M., 61 pp.,l1 1/2x7 1/4 inches. 33 full page plates; 33 illustrations. Cloth. $2.60. W. T. Comstock, New York. The stude...
-Cement Mortar And Concrete. III. Construction of Sidewalks. Cellar Floors
PHILIP L. WORMELEY, JR A useful and comparatively simple application of concrete is in the construction of sidewalks, for which purpose it has been used with marked success for a number of years. ...
-Speculum Grinding And Polishing
J. R. Stephens In 1878 and 1879 I did considerable work in grinding and polishing glass mirrors of 12 in. aperture, and 8 ft. solar focus. The methods used were essentially those of Dr. Draper, wit...
-Speculum Grinding And Polishing. #2
The 1 in. rod, at its lower end slips loosely inside a 1 in. gaspipe (internal diam. 13-16 is.) 3 ft. long. When set at the right length the thumb-screw shown, clamps rod and pipe. Through the lower e...
-Speculum Grinding And Polishing. #3
J. R. Stephens I certainly advise anyone interested in this subject, or in photographic astronomy past and present, to read the memoirs of Dr. Draper (date 1864) and Prof. Ritchey (date 1904). They...
-Changing A Spherical Surface To A Paraboloid
This is accomplished by shortening the radii of curvature of all the inner zones of the surface, leaving the outermost zone unchanged. There are two distinct methods of accomplishing this. First, by t...
-Photography. The Camera Club
H. P. Ellsan In travelling about the country, one cannot fail to be impressed with the lack of merit in the methods and work of the many camera clubs or photographic societies that are to be found ...
-Home Made Ruby Glass
Dissolve a little cosine in ordinary negative varnish, and also a like amount of aurantia in another portion of the varnish. Flow one side of two sheets of glass, one with one varnish and the other wi...
-Ebonizing Wood. Processes For Staining Both Hard And Soft Woods
Ebony or lignum vitea, as it is known to botanists, is a wood that is so intractable as to be worked with great difficulty. Therefore, the following processes of ebonizing various kinds of wood, ...
-Ebonizing Process For Soft Woods
No. 1. - Dissolve 1 1/4 oz. of sulphate of iron crystals in 1 quart of water and then add 2 oz. of logwood chips and boil the fluid for one hour; then strain the fluid and apply it to the wood with a ...
-Ebonizing Process For Hard Woods
Some hard woods do not readily take a black color from the application of a single staining fluid, but require to be treated with two different decoctions, of of which the following are typical: Disso...
-Making A Flash For Photos
It is sometimes desirable to produce a flash when only magnesium powder is at hand and there is no suitable lamp available, says Fayette J. Chute in Camera Craft. At other times the matter of expens...
-Correspondence 5
No. 119. Springfield, Mass., Feb. 16, '06. I have read with much interest the articles on the nine-inch reflector by Mr. M. A Ainsley, and would like to ask the following questions: Where may th...
-Science And Industry 3
A communication by Mr. George W. Walker, of the University of Glasgow, Scotland, he describes a method of reversing static induction machines. He observed accidentally that on stopping a small Voss ma...
-Induction Coil Making For Amateurs. II. Section Winder and Winding
FRANK W. POWERS Except in coils giving sparks of 1/2 in., or under, it is advisable to wind the secondary in sections. Unless this is done, the difference in potential between adjacent turns of the...
-Books Received 7
Engineers' Turning. By Joseph Horner. 404 pp., 8x 5 1/4h. Price $2.50. Crosby, Lockwood & Sons, D. Van Norstrand Co., New York. A name that would more nearly indicate the contents of this boo...
-Industrial Schools In Belgium
Consul McNally, of Liege, says that in no country in the world does the government attach more importance to the industrial and professional education of its people than in Belgium. While some of the ...
-Photography. Metol-Hydro And Its Advantages
Chester F. Stiles In comparing metol-hydro developers, recommended by the makers and others, one is at once struck with the difference between the various proportions of me-tol to hydrokinone. The ...
-Device For Connecting Cells
M. M. Hunting It is sometimes necessary in making small electrical apparatus to test the work with one or more cells of battery. To avoid the trouble of connecting up several cells to do this w...
-Free Industrial Alcohol
In connection with the recent agitation for free in-industrial alcohol, the Ways and Means Committee of the House of Representatives has had hearings on the subject in Washington, when an interesting ...
-Token Money In War Times
Token money is doubtless a thing of the past, says the Mining World . Token money is a name applied to pieces of money current only by sufferance and not coined by the authority of the state or gov...
-An Electric Furnace
The electric furnace is a great favorite with experimentalists, in consequence of the very high degree of heat which is readily obtainable by its use, reaching from 3500 to 1000 Cent. (7232&...
-A 9-Foot Rowing Or 12-Foot Power Tender. III. Canvas Covering - Interior Fittings
Carl H. Clark The planking having been completed and smoothed off it may be left for the present and some of the inside fittings put in. These fittings should be put in before covering the boat wit...
-A 9-Foot Rowing Or 12-Foot Power Tender. Canvas Covering - Interior Fittings. Part 2
At the bow it is drawn around and tacked to the face of the stern, while aft it is drawn over the curved part and tacked in the same manner; at the stern it is drawn over and tacked around just inside...
-A 9-Foot Rowing Or 12-Foot Power Tender. Canvas Covering. Interior Fittings. Part 3
The shaft hole in the launch should be extended through the keel and smoothed out. In order to prevent the water coming in at the joint of the deadwood and hull, it is suggested that a piece of th...
-Exploding Test Of Cartridges
In a recent test made at the suggestion and expense of the various manufacturers of cartridges, it was demonstrated that cartridges can be burned in a fire without danger to those standing near. As th...
-Introduction 8
The competition of labor is not a new subject, yet it is so important that it can rightfully be given frequent and earnest attention. The feature now to be considered is the changes which have taken p...
-Coal-Ashes Sifter
John F. Adams This is the season of the year when the big ash pile in the corner of the cellar demands attention, and usually it is a job which is approached with reluctance, as during the work of ...
-How To Make Cuts For Printing
J. Butler Haviland Every printer, publisher and large advertiser knows that good illustrations are not only necessary but expensive, especially when they are made by an engraver. But by the simple ...
-Plain Line Cuts
To make plain line cuts, follow the foregoing instructions to the point where the plate is first placed in the acid bath omitting the rosin dust. Go through the same manipulation until you get a depth...
-Thickness Caliper
Charles E. Burroughs The amateur boat builder, in working out a wooden hull, is frequently in a quandary as to the thickness of wood remaining at some particular place; he hesitates to make a cut f...
-Electrical Condensers
Oscar F. Dame There are two types of condensers which date back to the earliest days of electricity, before Franklin's time, when the only known electrical generators were the statistical machine a...
-Electrical Condensers. Continued
The purpose of the condenser as regaids the induction coil is two-fold, it being used primarily to absorb the spark caused by the breaking of the primary circuit at the vibrator contact points. The se...
-Speed Of The Stars
One of the most remarkable features of the universe is that every so-called fixed star is moving forward on an undeviating path which, so far as we.can yet determine, is a straight line. Nothing is be...
-Mechanical Telegraph Calling Device
Harold P. Davis The amateur telegrapher working on a line connecting the residences of one or two friends, has undoubt-ly wished many times that he had some device which would enable him to repeat ...
-Starting A Gas Engine
This is the question that comes up many times in the mind of the young engineer, when he finds out after a number of fruitless efforts to get her started, that she will not turn her wheels or go. ...
-Correspondence 6
No. 140. Toronto, Can., March 15, 1906. I have some clean brass castings which I wish to dip bright. Will you kindly let me know the proportions of sulphuric acid and nitric acid to use for the dip...
-Science And Industry 4
A little chemical compound named zorene, discovered by a Hungarian chemist, is said to possess very remarkable properties. A piece of friable slag, after immersion in it, defied the blow of a heavy ...
-Outdoor Athletic Apparatus
Walter N. Hanscom Physical training is too frequently considered a matter of interest only to young people, and the necessity of maintaining a proper physique by adults is, in these days of strenuo...
-Glue As A Binder For Cores
The making of a core is matter which requires fully as much attention as the mold itself, and one is apt to think that as long as a core is made so that it will hold together and is well vented, that ...
-Induction Coil Making For Amateurs. III. The Condenser
FRANK W. POWERS Owing to the long time required to complete a condenser to the working condition, it is described at this time rather than after the rest of the work on the coil is finished. The pa...
-How To Figure Horse Power
Terrence Trenholme Attempting to follow the empirical constants evolved for the steam engine led the pioneer gas engine designers so far astray that one and all dropped them forthwith, and seemingl...
-Wireless Telegraph Receiver
Austin M. Curtis The following is a description of a wireless telegraph receiver which is very sensitive, yet simple, and which needs very little adjusting. Make a base of | in. mahogany, or oth...
-Large Marine Gas Engines
With the general development of the large gas engine there has come a natural tendency to apply it as a motor to nearly every variety of machinery demanding the effort of mechanical energy. It is to b...
-The Seismograph. Records Time And Intensity Of Earthquakes
One of the most interesting places in Washington at this particular timeis the earthquake or seismographic division of the U. S. weather bureau. There, in charge of Prof. C. F. Marvin, earthquake spec...
-Causes Of Earthquakes
Prof. Abbe gives the causes of earthquakes in a statement which says, according to views commonly accepted in geology, the solid crust of the earth consists of an unknown depth of granite and gneiss, ...
-Umbrella Stands
Paul D. Otter It is an old saying that all things come to him who waits, but many acquire things after they have secured the purchasing power. The handy man's wife acquires many articles after...
-A Nine Foot Skiff
Carl H. Clark The skiff which is the subject of the present article is of very simple and cheap construction. There are many persons who either do not realize their need of a boat until late in the...
-Fahrenheit Thermometer
According to Sir Samuel Wilkes, Fahrenheit constructed his thermometer from one made many years before by Sir Isaac Newton. In the Transactions of the Royal Society for 1701 will be found the paper ...
-Truing An Oilstone
If your oilstone needs leveling, says the Blacksmith and Wheelwright, scrape it with the edge of a piece of glass. A piece of glass can always be obtained when perhaps the ordinary methods of rubbi...
-Hints For Machine Woodworkers
Charles Clukey Filing Band-Saws One very common fault of beginners in scroll band-saw filing is that of bearing too heavily on the file, and I may say that I have lately seen a man who has been ...
-Loose Pulleys And Babbitt Metal
Loose pulleys with babbitt metal for bearing: surfaces are easy on the shaft, but they have a mean way of wearing out so that they have to be rebabbitted occasionally. That this is to some workmen a p...
-The Uses Of Chalk
A neat trick known to most machine-shop men but not to many woodworkers, is to rub chalk on a file to keep it from filling up with the metal being filed. This knowledge is especially valuable in case ...
-Introduction 9
The devices, attachments, and methods used by one mechanic to accomplish some certain result, are more than likely to be useful to others, and for that reason we hope all readers will make a point of ...
-Construction And Management Of Gasoline Engines. I. Types of Engines - Advantages of Each Type
CARL H. CLARK The great increase during the last few years in the use of automobiles, power boats, and other units of small power, has led to the expenditure of a large amount of time and money in ...
-Advantages Of Each Type Of Gasoline Engines
The two cycle engine has the advantage of extreme simplicity, as there are no valves or other external moving parts which are likely to require adjustment. Since it receives an impulse for each revolu...
-Raising Ships With Acetylene
An ingenious method of raising sunken ships has recently been devised by M. Pierre Hurzy, says the Electrical Review. The system depends upon the use of calcium carbide for setting free gas when bro...
-Interchangeable Boring Bar Cutters
The troubles experienced by some shops with their boring-bars and cutters if recorded would make a book of several chapters. This is written with the hope that it will be followed up by some of your c...
-A Wall Cabinet
John F. Adams Although wall cabinets are not now used as much as formerly, yet in many homes one like that here described would be found useful for storing the numerous small articles required in t...
-Automatic Switch For Charging Accumulators
Make a little horshoe electro-magnet out of a piece of 1/4 in. round soft iron rod, each limb being 1 in. long and yoke also 1 in., Fig. 1 a. Wind this with six turns of No. 20 d. c. c. Over this pivo...
-Metallurgy Of Tin
In the metallurgy of tin, its first process is that of grinding the ore. The ground ore is then washed, which removes impurities, tin being such a heavy metal that it is most easy to wash away the ear...
-Metol-Hydro And Its Advantages
Chester F. Stiles When a plate has not been developed far enough, we find in printing that the light penetrates even the densest part of the negative before the shadows of the print are printed dee...
-Work For The Inventor
Some of the astounding facts revealed by recent agitations over the London fog which covered that great city Hke a black pall during the latter part of last December, says Modern Machinery, may furn...
-Batteries For Gas Engines
Each style of battery has certain fields of its own to fill but it becomes sometimes necessary for the owner of a gasoline engine to decide which he shall use, says The Canadian Thresherman. In favo...
-Hardening Steel
S. W. Goodyear As a constant reader of your valuable paper I come in contact monthly with opinions and formulas and advertisements of books and recipes for hardening and tempering steel, and still ...
-Fireless Cooking
Frederick A. Draper The expression tireless cooking is not strictly applicable to the process to be here described, but is sufficiently near it to make it applicable as a short title. For many ye...
-Types Of Batteries To Use
Each style of battery has certain fields of its own to fill but it becomes necessary for the owner of a gasoline engine to decide which he shall use, says the Canadian Thresherman. In favor of the d...
-Little Drops Of Knowledge
One of the commonest excuses which we are all apt to make when we do not know anything, says the Practical Engineer, is the plea that we have not had the time to look it up because our other duties...
-Correspondence 7
No. 143. Meriden, Conn. May 3, 1905. Will you kindly advise me whether it would be feasible to light my residence with a small lighting plant operated by myself. I have but little acquaintance with...
-Science And Industry 5
Interposing low pressure steam turbines between reciprocating engines and their condensers is becoming an increasing custom. The provision of a producer and a gas engine in lieu of a steam plant for p...
-A High Speed Launch
Carl H. Clark The small launch descrihed in the present article is of the extreme speed launch type and is intended primarily for use on sheltered waters, such as lakes or rivers. With skilful hand...
-A High Speed Launch. Part 2
A few battens should now be bent around the moulds and the edges bevelled so that the bottom will lie smoothly on the faces of the moulds. The edges of the stern boards and stem-are also bevelled at t...
-A High Speed Launch. Part 3
The deck beams are of spruce 1 in. deep and 3/8 in. thick, with the exception of those of the cockpit, which are 1/2 in. thick. The forward deck beams should have a crown of about 6 in. in 2 1/2 feet,...
-A High Speed Launch. Part 4
The coaming is of 1/4 in. oak and stands 3 in, high above the deck and is curved up at the forward end, as shown. It is fitted and supported by small blocks, as shown in Fig. 11. At the after end it r...
-A High Speed Launch. Part 5
The exhaust pipe should pass through the muffler and then directly outboard through the side of the boat. A brass collar is fitted to cover the edges of the canvas around the hole. The suction to the ...
-Laps And Lapping
Robert Gibson Griswold, The finishing of machined surfaces by the process of lapping is in reality a fine art. No other method presents such possibilities in the way of finished surfaces aud accura...
-An Ancient Tunnel
Evidence exists that, 24000 years ago certain Hebrew engineers executed the same kind of work as that of the Simplon tunnel, though perhaps on a smaller scale, says the Engineer. Owing to the bad st...
-Coloring Wood For Inlaying
Fancy colored woods for inlaying very much enhance the effect of work of this character. The usual materia] employed for staining white deal and other plain woods to imitate woods of a different textu...
-Aqueous Dye Solutions
There are two kinds of aniline dyes - one set soluble in water, and the other soluble in spirits. Both kinds may be used for producing dye solutions, but for penetration, especially on hard woods, the...
-Method Of Applying The Dye
A brush and sponge can be used for applying the the dye liquor, but to prevent the coloration being uneven, patchy or streaky, the fluid should be quickly and evenly applied all over the surface to be...
-Formulae For Colored Dye Liquors
The following formulae will serve as a guide in preparing suitable colored dye liquors. In all cases the water is reckoned in 100 parts. Reds, 1.-Eosine 1 part sulphate of soda, 10 parts; acetic ac...
-Photography. Fog: Its Causes In Plates And Its Prevention
Colville Stewart A plate is said to be fogged or foggy when the portions of the film which have not been exposed to light in the camera become dark or black in the developer. Every plate on very pr...
-Backing Made Easy
Frederick Allen There must be very few people at this time of day who believe that the results obtained on unbacked plates are equal in quality to those when the plate has been properly backed with...
-Moonlight Effects
Although there is a particular shade of carbon tissue on the market that for moonlight effects leaves little to be desired, it is not every worker who is prepared to turn out carbon prints, says Fayet...
-When The Governor Hunts
With two-cylinder engines it sometimes happens that when they are throttled down to go slow, that the throttle valve, while open wide enough otherwise, keeps shutting off the flow of gas entirely. To ...
-Making Blue Prints
Jacob Glogan One of the important adjuncts to mechanical drawing is that of blue printing. To obtain a blue print you must have what is known as a tracing of the drawing. To get the tracing trans...
-Introduction 10
A large number of replies have been received in answer to the editorial competition mentioned in the June number. Many valuable suggestions have been given, and arrangements are already being made to ...
-Construction And Management Of Gasoline Engines
Carl H. Clark II. Two Cycle Engines. The ordinary type of two cycle engine is illustrated in Fig. 8. A is the cyliuder of cast iron, in which travels the piston P. The piston is shown in its low...
-Three Port Engine
A variation of the two cycle engine, known as the three port type, is illustrated by Fig. 12. The general characteristics and operation are the same as the regular two cycle type, with the exception...
-Induction Coil Making For Amateurs. IV. Vibrators and Interrupters
FRANK W. POWERS To secure the maximum efficiency of a coil it is essential that the vibrator or interrupter be exactly proportioned to primary current and service for which the coil is used. For sm...
-White Lead Paint
A great deal is said today of the adulteration of food products and drugs. Second only in importance are the frauds practiced in the paint trade. In point of magnitude they surpass the first. White le...
-Making Pocket Accumulators
By Gebon. The following article on making pocket, storage batteries or accumulators, is in reply to a correspondent who has asked for information on the subject. Pocket accumulators are small ...
-Hall Table And Mirror
John F. Adams The hall table and mirror here described, are in the Mission style, and are given at this time as they are particularly suitable for summer residences. Those readers who are fortuna...
-Model High Speed Engine
B. R. Wicks The engine here described is especially designed for the benefit of the amateur who wishes to construct a simple working steam engine with his own tools. This engine comes under a ne...
-Books Received 8
20th Century Machine Shop Practice. L. Elliott Brooks. 631 pp. 7 3/4 x 5 1/4 in. 423 illustrations. Price $2.50. Frederick J. Drake & Co., Chicago, 111. The author, in compiling this book, certainly d...
-Correspondence 8
No. 148. Marbass, N. D., April 29, 1906. Will you please tell me what size of wire to use and the amount in the primary and secondary windings for an induction coil to give a one-half inch spark? W...
-Science And Industry 6
Up to 1840 there were no iron bridges in the United States except suspension bridges, in which iron links were used in the cables and suspenders, the floor sys tem being of wood. The first bridge in A...
-A Portable Conservatory
George S. Kingman Lovers of flowers who desire to indulge in their pastime of gardening during the winter months, and are deterred from doing so because of living in a rented bouse and so object to...
-Construction And Management Of Gasoline Engines. III. Four Cycle Engines
CARL H. CLARK Fig. 13 represents a section of a four-cycle engine of a common type. The working parts are very similar to those of the two-cycle type, but are further complicated by the addition of...
-Developing Negatives For Beginners
Before starting development I arrange the following articles upon my table: At the left-hand of the bench, as far removed as possible, is the dish containing the hypo. Laying beside it is a plate l...
-Why Groups Are Failures
Ward Muir Probably the first problem on which the proud owner of a new camera tries his hand is a group. His family - and any chance friends who may be calling - are marshalled upon the doorstep, e...
-Summer Thunderstorms
Frank P. Smith The massive clouds, the vivid lightning and pealing thunder, the heavy rain and gusty wind accompanying the summer thunder storm, are manifestations of nature's forces which produce ...
-Reclaiming Sand Hills
Reclaiming the barren sand hills of the Middle West with forest cover, to supply timber when there is a dearth of it, is one of the more striking of the important forest planting projects of the Fores...
-Sitting Room Furniture
Paul D. Otter Very little information need be given for this table, Fig 2, in the simple style. The plain posts and under framing are laid out on a drawing in a square of 21 x40 in. having the post...
-The Side Chair
This is a pattern in the modern style, appearing well as a wall chair or making a good, light chair for the table. The chair would be in keeping with the present primitive construction to have the bac...
-Introduction 11
This is the season of the year when vacations are uppermost in our minds, and relaxation and out-door pleasures the order of the day. We know that many boats, built from descriptions published in thes...
-An Experimental Thermopile
The thermopile is an instrument consisting of one or more pairs of dissimilar metals, in the form of wires, oars or blocks, joined together at one extremity. On applying heat to the junctions, an elec...
-Caisson Disease
The effects of compressed air on tunnel workers and the palliative measures to be adopted by those in charge, formed the subject of a lecture by Prof. Thos. Oliver, M. A., M. D., recently delivered be...
-Temperature Of The Earth
The measurement of temperature at the bottom of the two deepest mines in Australia - both at Bendigo - indicates an increasing warmth, but less than that due to added depth; the difference being expla...
-Induction Coil Making For Amateurs. V. Assembling: the Coil
FRANK W. POWERS The secondary section windings, condenser, and other parts being completed, the important operation of assembling the coil is next in order. But little has been said regarding the c...
-Hints For Yachtsmen
Diagram Showing Names Of Parts Of Sailboat. Nautical Terms Starboard - Right hand side of boat, Port. - hand side of boat. Aft. - Toward the rear. Forward. - Middle section of boat. Fore and Af...
-The Ondoscope
An excellent simple device, known at, the Ondo scope, has been devised by Prof. Ruhmer, of Berlin for examining alternating or pulsating electric dis charges. The following description is taken fro...
-New Electric Lamp
Consul E. T. Liefield forwards from Freiburg an abstract from a Paris newspaper concerning a new electric lamp which, it is said, will revolutionize the present system of lighting. The article was wir...
-A Small Flying Device
J. Carson Press The illustration shown here is that of a small flying machine, and presents a form of amusement that has seldom, if ever, been made the subject of experiment for boys. It is exceedi...
-Gasoline Engines
Continued from Page 258. The base is in two parts, split on the line of the shaft and bearings. The valve chest is on the back of the cylinder; I is the inlet opening and E is the exhaust; V is the...
-Electricity In The Home
An interesting argument for the use of electricity in domestic heating is presented by Mrs. Ellen II. Richards, instructor in sanitary chemistry at the Massachusetts Institute of Technology, Boston, i...
-Magnifying Glass Holder
B. R. Winslow For very fine work in the drafting room and the shop, it is advisable to use a magnifying glass. It saves the strain on the eyes, prevents ruffled tempers and makes neater work po...
-Boat Sailing For Amateurs
C. C. Brooks The wind has four direct effects on a sail boat which must be understood by the amateur sailor before he can begin to see why his boat performs differently under different conditions o...
-Sailing
Running before the wind may look like the ideal course to the amateur sailor, but a little experience cures him of that belief. Fig. 1 shows the location of the sail when on this course. Steering is d...
-Hints To Be Heeded IX Sailing Small Boats
To bring the boat up into the wind and reef a sail, lower the sail partially. First lash the cringle on the luff or forward edge of the sail, then stretch the foot of the sail taut with the after crin...
-Correspondence 9
No. 154. Paris, Tex., June 7, 1906. Will you please answer the following questions: 1. Does beat destroy the resistance of German silver wire? 2. In using wire like samples enclosed (Nos. 23 ...
-Induction Coil Making For Amateurs. VI. Current Reverscr And Spark Gap
Frank W. Powers With all except the very smallest of coils, it will frequently be found desirable to have a current revers-er by means of which the direction of the current through the primary wind...
-Electric Derrick
A novel application of electricity in the handling of iron and steel is now in operation in Cleveland, Ohio, in the way of a magnet. This form of magnet consists of a large iron disk supported by c...
-Dovetail Joints
These are employed chiefly for uniting wide and comparatively thin pieces of wood at right angles, as the sides and ends of box-like constructions. But the dovetail can be employed in many other circu...
-Dovetail Joints. Continued
Fig. 8. This, however, may have to be modified to make the divisions come out right on the width of the wood. A bevel is then set to the angle of 80. which is the most suitable for dovetails, ...
-Concluded On Page 304. Construction And Management Of Gasoline Engines. IV. Vaporizers and Carburettors
CARL H. CLARK Before the gasoline can be used in the cylinder of an engine it must be converted into vapor and mixed with the proper proportion of air. The devices for performing these functions ar...
-Cocoanut Oil As Food
Owing to the relatively high price of butter there is a growing demand for cheaper fatty foods, especially among the poorer classes. In the first number of the Philippine Journal of Science a se...
-Casehardening
Walter J. May Casehardening, as the term itself implies, means the formation of a hardened surface on otherwise soft metal, and the term is used more generally in regard to iron and steel, although...
-Casehardening. Continued
Rings and such like can be rammed tight with ash free from carbon without any adhesive, and tubular articles can also be filled with ashes in the same way. Only the parts to be hardened should be in c...
-Dry Process For Acetylene
We take the following abstract from the Engineers, London: The usual method of generating acetylene and calcium carbide is to treat the material with water. The gas may, however, be obtained if t...
-Drilling Holes In Glass
Heo. Brown The making of boles in glass is an operation generally accomplished with diamond drills, but these tools are expensive, so that the amateur naturally looks for a less costly method. The ...
-Introduction 12
Owing to the nature of a number of communications recently received, and for which answers are requested through the correspondence department of the magazine, it is desirable to explain the purposes ...
-A Sectional Skiff
Carl H. Clark The skiff herein described is arranged to be easily knocked down for stowage or transportation. Its length is 10 ft. and its beam 3 ft. 8 in. easily carrying four people. When knocked...
-Windmills For Lightships
The Canadian exploring steamer, Arctic (Capt. Bernier), which has made an extended voyage North Poleward is provided with a novel electric light installation. Since fuel cannot be obtained for the g...
-Indoor Work For Photographers
R. G. Francis I propose in this article, which is intended for the beginner rather than for the expert, to give directions for some of the simple things which are not always simple for the beginner...
-Developing Gaslight Papers
He gets into trouble immediately, for I never knew a beginner to make good prints from his first package of paper. The thing is very easy when you know how, but the difficulties of explaining in any w...
-Fixing And Washing The Prints
The next most important thing to do is to wash the print free from developer before putting it in the hypo. If the print is allowed to remain in a large quantity of clean water for two or three minute...
-Blisters
It sometimes occurs, especially in cold weather, that when the prints are taken from the hypo and placed in the wash water, blisters form, spoiling the result. One cause for these is a considerable di...
-Masking And Dodging
It often happens that the negatives which are employed for printing on these papers are far too dense in certain portions to yield good prints. For instance, it is very often the case that a full expo...
-How To Clean A Lens
Custom teaches us that glass will stand any amount of washing and wiping without injury, but the lesson is wrong. It may hold good of tumblers and beer bottles, but when we come to the finer quality o...
-Band Saw Attachment For Lathe
E. A. R The accompanying illustrations show a band saw which can be attached to and driven by any lathe ranging from 3 1/2 in. up to 5 in. centers. The frame, wheels and guides are of cast-iron, th...
-Chucks For Holding Small Tools
B. N Too little attention is given to the selection of means for holding the small sizes of tools in the lathe. This attention becomes all the more necessary in the case of tools used in specialize...
-Fish Kept Alive Out Of Water
Fish, alive and kicking, may now be received at any distance from the waters in which they are captured. In other words, the salmon of the Columbia, the trout of Maine, the bass of Florida may be ship...
-Removing Specks From The Eye
Some engineers are very skilful in removing specks from the eyeball, states the Engineers' Review. Take a splinter of soft wood, pine or cedar, and whittle it to a point. Then take a small, loose f...
-A Small Rheostat
Paul Zerrahn The materials for making this rheostat are: A piece of hard black rubber 4x5 in. and | in. thick; ten short round-head brass screws; six inches of 1/4 in. bore, hard black rubber tubin...
-Weather Indicator
j. s. Having tried many different styles of weather indicators, I have found the kind to be described here to work well, and as the cost of making one is small, it will undoubtedly interest many re...
-Gasoline Not Dangerous
Because gasoline can be used with better effect than any other hydrocarbon compound as an explosive mixture in the cylinder of an internal combustion engine, an impression prevails that gasoline must ...
-Correspondence 10
No. 158. Cambridge, Mass., July 7, 1906. Will you please inform me whether is is feasible to use a small balloon for elevating the aerial wire for wireless telegraphy, and if so, give description f...
-The Simplon Tunnel
The new Simplon tunnel, which was recently opened to traffic, is being operated with little difficulty from the natural rock heat that is encountered near the middle portion. At the same time, the ven...
-Simple Current Detector
A. M. Trogner To make a simple, yet effective current detector, procure a glass tube, some No. 26 wire, two corks, nails, and wood for base. Drill a hole in the base-board large enough to insert th...
-Vaccinating Trees
According to Consul-General Guenther, of Frankfort, German papers state that it happens frequently that the roots of fruit trees are more exhausted than the parts above the ground, and so the life of ...
-Science And Industry 7
For some weeks past the French War Office has been engaged in conducting experiments with a view to securing reliable communication for military purposes between Paris and the eastern garrison towns b...
-A Student's Desk
John F. Adams In the design here given for a student's desk, the aim has been to provide ample storage rocm for writing materials, shelves for books, etc., and yet retain an unobstructed surface fo...
-Physical Science
The accomplishments of physical science are truly wonderful. While, perhaps, not appealing as strongly to the lay mind as does the work of the engineer, they must nevertheless be counted among the gre...
-Induction Coil Making For Amateurs. VII. Experiments with Induction Coils
FRANK W. POWERS The experiments that may be performed with an induction coil are to some extent dependent upon the spark capacity of the coil, but as many attractive and interesting ones require a ...
-Hauling Out Boats For The Winter
Carl H. Clark The beginning of the present month will, with the large majority of boat and launch sailors, mark the close of the season, and the next thoughts will be in regard to hauling out and s...
-Earthed And Unearthed Radiators In Wireless Telegraphy
W. H. Eccles, D. So Recent commendations of certain new Lodge-Muir-head wireless telegraph stations equipped with insulated oscillators and resonators of the 1897 English patent, make the moment op...
-Photography. Art Tones In P. O. P. Development
Stanley C. Johnson, B. A What a delightful range of tones may be secured with comparative ease by partial printing and subsequent development of P.O. P! Red chalks and ivory blacks, it is true, are...
-Use Of Developing Papers. I. Contact Printing with the Slower Papers
C. H. CLAUDY There are certain things about the use of developing papers which are common to all instruction books. There are other things which are left out of many of these manuals, or included o...
-Kites For Elevating Wireless Aerials
Oscar N. Dame Id many instances amateurs are not able to erect poles suitable for the elevation of aerial wires, and while light wire strung from insulators placed on trees has served the purpose t...
-Cost Of Electric Lighting
They are having an electrical exhibition in London, and in connection with this have secured prominent electrical men to make public lectures. A number of these have been of particular interest to the...
-Introduction 13
The following awards have been made in the editorial suggestion offer announced in the June number : First, Chas. C. Trump, Syracuse, N. Y. Second, M. M. Hunting, Dayton, Ohio. Third, Ralph L...
-Economical Method Of Constructing Induction Coils
W. S. Dent And L. B. Weeks The induction coil is indispensable to the experimenter in wireless telegraphy, radiography, high frequency work and, in fact, all work for which a high tension current i...
-Experiments In Preserving Meat
In a report by the Italian Minister of Agriculture on the subject of refrigerating in Italy, Maucini gives some interesting results obtained by the Craveri process for preserving meat - a process whic...
-Functions Of A D-Slide Valve
Notwithstanding the fact that the D-slide valve is almost as old as the steam engine itself, there are many engineers who still have only a hazy idea of its functions. While many engines are now equip...
-Towing With Electric Launches
In a recent issue of our esteemed contemporary, the Amican Shipbuilder, an interesting suggestion is made. It is said that since many of onr large coasting schooners are fitted with pewer apparatus ...
-Free Alcohol And Its New Applications
Frederick A. Draper After Jan. 1, 1907, no internal revenue tax will be imposed upon denaturized or undrinkable alcohol, and the indications are that after that date there will be a rapid and immen...
-Wireless Tuning Coil
W. C. Hutchinson To obtain the best results with wireless telegraphy apparatus it is necessary to have the sendirig-receiving stations tuned as near as possible to the same wave length. As consider...
-A Water Power Blow Pipe
M. M. Hunting An apparatus for producing a blast for a small blow pipe by water power may be made in the following manner. A piece of 4-in. iron pipe, 6 ft. long, is fitted with a cap at each en...
-Wood Made From Peat
Frequent attempts have been made to use peat as raw material for the manufacture of artificial wood. The material must, for this purpose, be fully reduced to a fibrous condition, so as to produce a me...
-Freak Engine Inventions
The advent of the steam engine was the signal for a host of ingenious and amusing inventions, and the writer is enabled, through the courtesy of an official of the Patent Office at Washington, to affo...
-Charging Storage Batteries
Storage batteries are now used in so many central stations that station engineers should be familiar with their peculiarities. When a battery is being charged it is important to know when to stop char...
-Liquid Air At Low Cost
Reduced cost of liquid air production is indicated by an article in the London Times. Recent experiments in England of an invention by Mr. Kundsen, a Dane, furnished liquid air at one sixth of the p...
-Why Iron Rusts
It was formerly believed that the reason why iron exposed to the atmosphere rusted was because it simply oxidized. Afterward it was suggested that the first stage in the rusting of this metal is the p...
-Training Electrical Engineers
One of the problems in many of the larger of Ameri-ca's industries is the necessity of always having available a corps of carefully trained men to take positions which may become vacant and to fill ne...
-Science And Industry 8
A waterproof cement has been patented in Germany. A mixture of vegetable wax and caustic lime, in boiling water, is added to unground Portland cement clinker, and all ground together. The inventor mak...
-Amateur Work 1906 News
In the casting of brass the pattern should be slightly larger to insure the proper dimensions. The shrinkage allowance on patterns for casting brass is 3-16 inch to the foot in length or diameter of t...
-Amateur Work 1906 News #2
Two nozzles are used on a water wheel of small diameter where high speed is required. The power of the wheel is thus doubled, though twice the amount of water is required. Red sealing wax is made o...
-Amateur Work 1906 News #3
At Rlagenfurt, in Austro - Hungary, the electric process of pipe thawing is used somewhat extensively by the inhabitants. The winters in this region are very severe and the pipes are often frozen. The...
-Amateur Work 1906 News #4
German papers state that the Great Grocery Exhibition, an association of large dealers in groceries in England, has now for the fifth time offered a prize for a safety lamp using mineral oil, A lam...
-Amateur Work 1906 News #5
A spontaneously moving stone ball in a cemetery at Marion, Ohio, is attracting a great deal of attention It is 36 in. in diameter and rests upon a heavy pedestal. This ball is slowly turning upon its ...
-Amateur Work 1906 News #6
Laminated poles and pole tips are coming into increased use, and this, says Power, is a feature of modern dynamo and alternator construction. For traction dynamos this construction is found to be of...
-Amateur Work 1906 News #7
In cleaning a fountain pen it is a great mistake for those experienced in such matters to attempt to take all the elements apart, owing to the difficulty experienced in putting them back in their corr...
-Amateur Work 1906 News #8
A use for white mice is mentioned in a paper read before the Chemical, Metallurgical, and Mining Society of South Africa by Messrs. Macaulay and Irvine, who suggest that the law should provide that a ...
-Amateur Work 1906 News #9
Many who have wondered at the name of Portland cement will be interested to know that it originated in Leeds, England. A bricklayer named Joseph Aspdin patented an artificial cement in 1824 and called...
-Amateur Work 1906 News #10
Priming in a boiler is simply the mechanical rising of water by steam in its effort to get out, and if the steam space is drawn upon and emptied, the boiler is almost sure to prime. The steam space sh...
-Amateur Work 1906 News #11
The Mechanical World recently contained an epitome of a lecture by A. B. .Roxburgh of the National Gas Engine Company, Ltd., in which it was stated that about one-fourth of all the gas made in Great...
-Amateur Work 1906 News #12
MAKING ROADS IN ALASKA. A serious detriment to the making of a road in Alaska is the thawing of the gi-ound beneath the moss. It has been the universal experience that whenever the moss is cut int...
-Amateur Work 1906 News #13
The safety of illuminating oil is determined, not by its burning point, but by its flashing point. The Amerika's supplies for a trans-Atlantic journey lasting seven one-half days, carrying 40...
-Amateur Work's Wise Proverbs
It is easier to attend to another man's business than it is our own. The man who wants to take it easy as he goes along can do so in the full assurance of never being overburdened with a weight...









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