Amateur Work Magazine Vol6
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, astronomy, book binding, mechanical drawing, etc
| Title | Amateur Work Magazine Vol6 |
| Author | Miscellaneous |
| Publisher | Draper Publishing Company |
| Year | 1907 |
| Copyright | 1907, Draper Publishing Company |
| Amazon | Amateur Work: A Monthly Magazine Of The Useful Arts And Sciences |
A Twenty Five Foot Auxiliary Yawl. I. General Description and Lines- CARL H. CLARK This boat is designed as a general knockabout boat for (sailing, and also to offer fair cruising accommodations for two to four persons. 'I he yawl rig makes her very easy to handle, ...
- Machine For Grinding Telescope Specula
- W. Forgan The simple addition to an ordinary lathe for the purpose of grinding telescope specula has been of so much benefit to the author that it was thought, if made known through the medium of t...
- Miniature Grandfather's Clock
- Ira M. Cushing The clock illustrated and described makes a very pleasing gift. and well repays the maker lor the time and small expenditure given to it. The drawing given is well dimensioned as wel...
- Books Received 1
- A First Course in Physics. Robert A. Millikan and Henry G. Gale. 488 pp. 71/2 x 5 inches. 464 illustrations and several poitraits. Price $1.25 Ginu & Co., Boston. This one year course in physics ha...
- Electricity On The Farm
- Although applications of electric lights and power to farm work are few and widely scattered, occasionally conditions which permit of one or both of these applications are readily seized. An instance ...
- Nursery Furniture
- John F. Adams In response to a number of requests for furniture for the children, a few pieces likely to be most in demand are given with the hope that a large number of children will enjoy their...
- Nursery Furniture. Continued
- The Desk This will require a little more skill than the previous pieces, but if care be taken in the work, no great difficulty should be experienced. The general dimensions are: Height, 3 ft.; widt...
- Repousse Metal Finger Plates
- Edwin Turner The finger plate shown in the accompanying illustrations are designed with the object of forming graduated studies for the beginner in repousse metal work. In Fig. 1 is shown a Celtic ...
- Gasoline Brazing Torch
- A gasoline brazing torch which fastens to the wall in front of the work bench and swings back out of the way when not in use may be made, says the American Machinist, as follows: Thread both ends o...
- Pipe Rack
- As making Christmas gifts is the thought in many minds at this season of the year, a pipe rack is offered as a suggestion to those readers who may have relatives or friends who are smokers. This rack ...
- Inexpensive Picture Frames
- Many persons accumulate in time picture taken from magazines or from other sources, which they would like to have framed but which lack sufficient value to make it worth while to purchase a frame. For...
- Cheese Box Sewing Stand
- An ordinary cheese box and four pieces of wood 1 in. square and 30 in. long are the materials required to make a very serviceable work stand, having the much desired storage capacity for small article...
- Introduction 1
- This number begins the sixth year of publication of this magazine. We take this occasion to thank our readers for the cordial support that they have given it, and to say that plans are now being perfe...
- Induction Coil Winding Machine
- Frederick A. Draper A method of coil winding described in the October issue of this magazine required the use of a screw-cutting lathe with gears set as for cutting 60 threads to the inch. As many ...
- ABC Combination Money Box
- This is a box which is both useful, amusing and educational. With it any word of three letters can be formed, and it can be set to open by forming one particular word. Fig. 1. The b...
- Practical Hints About Arc Lights
- To the practical man, the history and theory of the are lamp are not a necessity, but the knowledge of its mechanism and mode of operation are absolutely essential. So long as the lamp needs only trim...
- Use Of Developing Papers. II. Developers and How to Use Them
- C. H. CLAUDY Developing papers are developed with any good developer, all those which act upon plates to produce negatives giving some kind of results on the. paper. But some are much better than o...
- How To Make An Electric Hammer
- The following instructions for constructing a hammer actuated by electricity will be found useful in making any device in which a sucking solenoid is required- The sizes of the parts, the gauges and...
- Construction And Management Of Gasoline Engines. VI. Jump Spark Ignition
- CARL H. CLARK The jump spark ignition is very simple in appearance, the only engine attachment being the commuta-tatr, or device for making and breaking the primary circuit whenever a...
- German Farmers Distil Alcohol
- Representative E. J. Hill, of Connecticut, who assisted the Commissioner of Internal Revenue to formulate the rules under which the free alcohol law went into effect on October, spent most of the summ...
- Home Bowling Game
- Frank W. Powers Visitors to many summer resorts and pleasure grounds during the past season may have seen a new type of bowling alley which seemed to provide much entertainment for the players. In ...
- Turbines On The Lusitania
- The Cunard liner Lusitania has been designed for a speed of 25 knots an hour, a speed which is a knot and a half in excess of that of the fastest of the existing ocean greyhounds the Kaiser Wilhel...
- Rigidity Of The Earth
- Lord Kelvin in 1866 sought to determine the rigidity of the earth from observations of the tides of the cean. His cone Usion was that the earth as a whole is certainly more rigid than glass, but perha...
- Science And Industry
- Hot water and steam heating systems have their respective advantages. The furl cost is generally in fa-Tor of hot water, since the amount, of heat given off. by the radiator may he varied to suit the ...
- A 150-Watt Dynamo
- Ira M. Cushing This dynamo is capable of delivering 10 amperes at 15 volts pressure when driven at a speed of 2200 R. P. M. The field frame and base should be cast in one piece. The outline of the ...
- A 150-Watt Dynamo. Part 2
- The next thing to make is twelve tubes of white drafting paper to fit in holes of the core. If the armature is slotted, troughs should be made instead of tubes. These should be 3 in. long and with the...
- A 150-Watt Dynamo. Part 3
- The small fittings can be made now while the windings are drying. An easily made commutator for this dynamo is shown on the drawing. The foundation for it is a brass tube 5/8 in. in diameter and 21/8 ...
- Technical Education
- John Casson Wait Abstracts of Founder's Day Address at the Thos. S. Clarkson School of Technology, Potsdam, N. Y. The foundation of a technical training consists of nature's laws and phenomena, ...
- Overcoming The Difficulty Of Making Paint Adhere To Zinc
- A writer in Popular Mechanics recently explained his method of overcoming the difficulty of making paint adhere to zinc, his desire being to make zinc be the support of a plate surface, and painting...
- A Window Conservatory
- John F. Adams The arrangement for winter plants here described is the result of much planning to obtain considerable more room for plants than could be spared conveniently inside the room to which ...
- How To Color Brass Black
- To produce a black color on brass, the following is the formula: Dissolve 1 pound of plastic carbonate of copper in 2 gallons of strong ammonia; first boil the brass that is to be blackened in a stron...
- A Twenty Five Foot Auxiliary Yawl. II. Making and Setting Up the Stem, Stem and Bottom
- Carl H. Clark The outline of the sternboard having been shown in Fig. 6, the complete stern is shown in Fig. 8. It is of 1 1/4 in. oak or other hard wood, fastened together with cleats 1 1/4 in. th...
- Method Of Obtaining Experimental Wave Lengths
- There is a considerable gap of unexplored wavelengths intermediate between these of Hertzian waves and what is commonly known as heat. The shortest Hertzian waves which have heretofore been produced a...
- Secret Of Aerial Navigation
- The Tissandier brothers of France moved an airship by means of electricity generated by bichromate of potash cells. Redard and Krebs of Germany also attempted the feat of governing the motion of a hug...
- Coal Classification
- Coals are classified upon the ratios which the volatile materials or hydro-carbons bear to fixed carbon. Anthracite coal is low in volatile material and high in fixed carbon. Soft coals are high in vo...
- Introduction 2
- In this issue will be found a design and description of a 150 watt dynamo, the first of a series of articles by Mr. Ira M. Cushing, E. E. Other sizes of the same design to be described are: 75, 300 an...
- Construction And Management Of Gasoline Engines. VII. Spark Coils-Wiring: Diagrams
- Carl H. Clark Coils Coils for use with gasoline or gas engines are of two kinds, the plain coil illustrated in Fig. 40, and the induction coil shown in Fig. 41. The former is used in connection ...
- Construction And Management Of Gasoline Engines. Spark Coils-Wiring: Diagrams. Continued
- Magneto This is a small dynamo electric machine used to give electric machines wound to give an alternating current; it is run from the flywheel by means of a belt or friction wheel. magneto should...
- Soldering Paste
- Soldering paste has come into extensive use in electrical work as a flux for soldering, says the u Brass World. This has been brought about by the requirements of the electrical trade that in certai...
- Electrical Equipment Of A Wayside Inn
- W. A. Wakeman While on a short trip into the country some time ago, I stopped at a wayside inn, and seeing evidence of an electric equipment, I found the engineer and expressed a desire to see his ...
- Silver Solder
- For a brazing solder, no other alloy can approach silver solder. It has the advantage of a low melting point, together with toughness, qualities not possessed by the brazing brasses composed of copper...
- Magnesium And Its Uses
- Two properties render magnesium a valuable metal: First, its lightness. It has even a less specific gravity than aluminum. Second, its affinity for oxygen. This fact renders it of great value in deoxi...
- A Sewing Stand
- W. E. Shepleigh The sewing stand here described is one that was redesigned from a Japanese table, simplified to permit of more easy construction. The original from which it was taken was an extreme...
- A Pair Of Steps
- The steps shown complete in Fig. 3 are most useful and at the same time most durable, notwitstanding the various other kinds which have been introduced of late years, the sole merit of which, as a rul...
- Books Received 2
- The American Annual of Photography and Photographic Times Almanac for 1907. 354pp. 9x6 inches. Copiously illustrated. Cloth, $1.25; paper, 75 cents. George Murphy, Sales Agent, New York. This photogra...
- Instrument For Drawing An Ellipse
- It may be interesting for some of the readers to know bow to draw an ellipse of any size, as well as an egg shaped figure or oval, Fig. 1, similar to the cross section of a sewer, writes W- McD., in ...
- Correspondence 1
- No. 159. Moose Lake, Minn., Oct. 26, 1906. Can a Ruhmkoff induction coil be used with a jump-spark gasoline engine with good results, and what should be the rated spark far a small 3-h. p. engine. ...
- Trade Notes 1
- The spiral-ratchet screw driver here illustrated is Intended for electrical workers, cabinet makers, carpenters, boat builders and mechanics having a large number of small screws to drive, and where a...
- Science And Industry #2
- The waters of the Dead Sea contain from 20 to 26 per cent of solid matter in 1000 parts. This includes 7 to 10 per cent of common salt, as much more of mag-nesian salts and 2 1/2 to 3 1/2 per cent of ...
- Saw Bench And Boring Machine
- Elmer C. Hutchinson The amateur woodworker, and especially he who is given to cabinetmaking, soon tires of using a hand saw for getting out his stock, and longs for a saw bench. If possessed of a l...
- Saw Bench And Boring Machine. Continued
- The hubs for the drive wheels were cast iron, a pattern being made as shown in Fig. 5. The castings, four in number, were then taken to a machine shop, where they were bored and faced off on the inner...
- Sharpening Skates
- Albert T. Macklin Anyone who has tried to sharpen a pair of skates on an emery wheel knows how difficult it is to maintain one angle throughout the full length of the skate. Many regular skate grin...
- Elements Of Dynamo Design
- Ira M. Cushing The young Electrical Engineer, after he has passed the age of batteries, electric bells, miniature motors and the like, has a very natural ambition to design and build a piece of ele...
- The Pitch Of Screw Propellers
- C. C. Herbert The question of the proportions and action of propellers is, on the whole, perhaps the least satisfactory of all with which the marine engineer has to deal. The dimensions of a propel...
- Uses Of Liquid Air
- At the time of the first commercial production of liquid air, several years ago, a number of untenable claims were made as to its practical applications. One of the most valuable uses to which the liq...
- Mercury Arc Rectifiers
- Joseph Alden A new device has been put upon the market within the last few years for converting alternating current into direct current. This is the mercury arc rectifier. It is quite probable that...
- Some Facts About Varnish
- Gordon Montague The word varnish is understood to be derived from the Latin vitrinere, meaning to glaze or produce a glass-like surface. Of the greater variety of gums used in the making of varni...
- Artificial Rubber From Cereals
- Consul F. W. Mahin reports from Nottingham that according to a current newspaper item an inventor named Carr, in Middlesex, proposes to make artificial rubber from cereals-wheat, corn, etc.-for use as...
- Invention Of A Cement That Will Stick To Anything
- Prof. Alexander Winchell is credited with the invention of a cement that will stick to anything. Take two ounces of clear gum arabic, one and one-half ounces of fine starch and one-half ounce of white...
- A 75-Watt Dynamo
- Ira M. Cushing The dynamo here described is designed to light 14-volt miniature series lamps connected in multiple; driven at a speed of 2800 R. P. M. it will give 5 amperes at 15 volts. The accomp...
- Skilled Or Unskilled
- The present strenuous condition of manufacturing finds the supply of skilled labor entirely inadequate to meet the demand, and employers are obliged to accept even the most ordinary applicants and pay...
- Construction And Management Of Gasoline Engines. VIII. Lubrication and Lubricating Devices
- CARL H. CLARK The question of lubrication is one of vital importance in gasoline engine operation. The thoroughness of the lubrication has a very direct effect upon the life of the engine. An engin...
- Mortise And Tenon Joints
- A tenon is a tongue or projection of reduced size formed at the end of a piece of wood, and a mortise is a corresponding slot or recess cut to receive it in the side of another piece. The end of the t...
- Mortise And Tenon Joints. Continued
- When mortise-and-tenon joints are not held together by external attachments, they are secured either by pins or wedges, and in joinery and small work are usually glued. In very light work glue alone i...
- The Origin Of Pearls
- Many suggestions have been made as to the origin of pearls. According to one theory, pearls arise from secretions caused by the presence of some foreign object, such as a grain of sand, within the she...
- Some New Ideas As To Exposure And Development
- Walter Zimmerman Beginning with the successful result of the theory that like development produces like results in the making of negatives, a theory upon which the writer has worked for some years ...
- Some New Ideas As To Exposure And Development. Continued
- Now go to the other extreme and to obtain the four kinds of effects from the slow or very slow plate Plate clases 4 and 5; the difficulty seems greater, and to many the thing will seem to be imposible...
- Vapor Lamp Giving White Light
- The mercury vapor light, developed by American inventors, which in the form of long, glowing tubes, produces more light at less cost than any other practical method of illumination, and would be exten...
- A Twenty Five Foot Auxiliary Yawl. III. Setting up the Frames and Planking
- Carl H. Clark After the moulds are all correctly set and the ribbands fastened, the form is ready to receive the frames. These frames are of oak 1 in. x 1 1/2., and are spaced 9 in. apart, center t...
- A Twenty Five Foot Auxiliary Yawl. Setting up the Frames and Planking. Continued
- The fastenings of the plank to the frames may be one of three kinds, copper nails riveted over burrs or washers inside the frames, galvanized iron nails, or brass screws. The first is the most expensi...
- Books Received 3
- MODERN MILLING MACHINES. Joseph G. Horner, M. E., 304 pp. 8 3/4x5 1/2 in. 269 Illustrations. Cloth, $4.00. The Norman W. Henley Pub. Co., New York. Anyone at all familiar with the books previously ...
- Alcohol From Cornstalks
- The Department of Agriculture is developing a new industry in the production of alcohol from corncobs, which, the department says, promises to be of much commercial, value. Investigations are being ma...
- Amber In Santo Domingo
- Santo Domingo is one of the few places in the world where amber occurs in any quantity. The bulk of the supply comes from the vicinity of Konigsberg, on the Baltic seacoast. There it occurs in the low...
- Ash Barrel Truck
- Wilbur S. Chandler The periodical wrestle with the ash barrels that falls to the lot of city residents, where weekly collections by the official wagon necessitate regular attention to this dusty wo...
- Spring Threading Tool
- Mr. A. B. French, in the American Machinist, gives the following information regarding a spring threading tool: The drawings show a special spring threading tool that gives satisfaction and produ...
- Science And Industry #3
- A knowledge of geology is indispensible to the complete education of the miner, the prospector, the civil engineer, and the military engineer, and a first hand acquaintance with at least its elements ...
- An Attractive Bedstead
- John F. Adams The bedstead here described is an English design which appeared in the early part of the 19th century, and has a light yet strong appearance, which is very attractive. For a dark wood...
- Inventors Should Consider
- The young man who has, or thinks he has, made an invention has need of much sense and sound advice before he puts any appreciable amount of either time or money into his invention, says Irv. in Ameri...
- Design Of A 12-Inch Induction Coil
- Wm. B. Eddy The aim of this paper is to show the application of the principles of induction coil design, taking for illustration a 12-in. coil. It is not to be expected that an amateur without expe...
- Design Of A 12-Inch Induction Coil. Continued
- For the secondary wire No. 34 is best adapted. It is best also to wind the sections in pies of 1/8 in. thick. This size of wire can be wound after it has been through a bath of hot paraffin wax, on ...
- Grinding Gas Engine Cylinders
- I have found, what I suppose everyone has who has had much to do with gas engines, that the finish and truth of the cylinder bore, piston and rings should be the very best possible. To attain this per...
- Decorative Enamelling. I. Kinds of Work and Utensils Needed
- There are few of the artistic crafts more fascinating than enamelling, and certainly none more beautiful. To enter into the work seriously a muffle furnace is required, but small pieces of work in bot...
- Sound Box For Gromaphone
- This article describes one of the latest forms of sound-box for a gramophone. The details can be slightly varied to meet requirements, but the general design and dimensions should be adhered to, as th...
- The Engineer's Future
- The electrical engineer of today who has confined his work entirely to theoretical fields has, comparatively speaking, very little chance in competition with his brother worker who, in addition to muc...
- Construction And Management Of Gasoline Engines. IX. Multiple Cylinder Engines
- CARL H. CLARK There are many considerations which make an engine of two or more cylinders particularly desirable. It is a self-evident fact that when the limit of sire of a single clyinder is reach...
- Grindstone Tool Holder
- George A. Seaton In many shops there are numerous chisels, cutters and plane bits that must be ground from time to time and if they all must be held by hand the process not only requires much skill...
- Transparencies
- J. Garfield Gibson When the ground is covered with Kipling's Beautiful to the depth of several inches and the chilling north winds remind us that straw hats and shirt waists are no longer seasona...
- Introduction 3
- The prize offer in the December number produced such a large number of articles that the judges have been able to make only the awards for the first two prizes, as follows: First prize, Elmer C. Hu...
- A Twenty Five Foot Auxiliary Yawl. IV. Finishing Frame and Deck Beams
- Carl H. Clark The boat is now clear on the inside and all plank fastenings have been done. The entire inside would best be treated to a good coat of linseed oil and painted, to prevent its shrinkin...
- African Vanilla Culture
- Consul-General Richard Guenther, of Frankfort quotes from the exhaustive report of Richard Gomolla in the Tropenpflanzer the following summary as to the cultivation and preparation of vanilla in Ger...
- Attachments For Speed Lathe
- C. Tobyansen The ambitious carpenter who has a small private workshop should by all means include a turning lathe among his possessions. It will pay for itself, if only in the time saved by an emer...
- Seaweed In Norway
- Seaweed burning in Norway produces an annual income of £30,000. Along the shores of Joderen, on the southwest coast of Norway, the seaweed grows in veritable forests. This is not the common grass vari...
- How To Make A Microtome
- J. E. Paynter A microtome is an appliance used for cutting very thin sections of the stems, leaves, etc., of plants, for examination under the microscope. One of the most common methods adopted by ...
- Brazing
- E. A. Suverkrop In spite of the fact that there are hundreds of brazed flanges on the average steam ship it is surprising how few engineers know anything at all about the job. This is no doubt due ...
- Spontaneous Combustion
- A peculiar case of spontaneous combustion is described in Cassier's Magazine by S. E. Wowell, who says that on February 17, 1906, two large refrigerator cars of young rose bushes were received at Hann...
- Seepage Of Water In The-Earth
- All rocks are more porous than glass, and hence the ocean bottom everywhere permits the water, by the force of pressure and capillarity, to seep into the bowels of the earth. The rate of the seepage w...
- Elements Of Dynamo Design. II. Magnetic Circuits-Field Magnets
- Ira M. Cushing The magnetic circuit has been found to have many properties in common with the electric circuit. There is a difference of magnetic potential causing lines of force to flow from the n...
- Elements Of Dynamo Design. Magnetic Circuits-Field Magnets. Continued
- Another magnetic property of iron and steel is Hysteresis. This is a lag in the building up to their full number of the lines of force in the iron behind the force which producees them. In other words...
- New Books Received
- Electrical Wiring And Construction Tables. Menry C. Horstman and Victor H. Tousley, 118 pp. 6x4 in. Full Flexible Morocco, $1.50. Frederick J. Drake & Co., Chicago, I11. This book, which is a companio...
- Geometry In Wood
- Richard Inwards, a correspondent of the English Mechanic, contributes to that journal some particulars of a suggestive model designed for the improvement of the student's knowledge of practical geom...
- Tempering High Speed Steel
- At a recent meeting of the Master Blacksmiths' Association, Mr. George Lindsay, in discussing annealing of high speed steel, said he had been called upon to make a forging of this material at short no...
- A Ball Bearing Water Motor
- H. K. Carruthers To the Amateur Worker, power from any source, excepting foot, is his one dream. To instal a miniature steam engine is out of the question to a large number, and a gasoline engine o...
- Production Of Platinum
- F. W. Horton The year 1905 saw a phenomenal rise in the price of platinum and a greatly increased production in the United States. Early in March, 1905, the price of ingot platinum advanced from $1...
- Transformer For Experimental Work
- Prof. W. G. Clarke At the present day nearly every experimenter has the alternating electric current in h s laboratory or else has easy access to a reasonable amount of supply. The voltage is usual...
- Transformer For Experimental Work. Continued
- In each of the spool heads turn out a round recess 1/4 of an inch deep and of such a diameter that the paper tube 7 will just push tightly into the recess. Now put some thick shellac varnish on the tu...
- Decorative Enamelling. II Two Brooches in Cloisonne Enamel
- Both the jewellery worker and the silversmith find the use of enamel of great value in forming a suitable decoration for their work, and in this article are given two designs of easy construction, use...
- Aluminum Castings
- Aluminum castings can e made in any ordinary foundry fitted for making brass castings, says the American achinist. A graphite crucible should be used, and the metal is melted preferably over a coke ...
- The Storage Battery
- H. L. Strong The history of the storage battery is older than that of the modern steam turbine, and its application is. broader; but in either ease there seems to be little reliable data or informa...
- Standardizing Baroneters
- We are indebted to Mr. Max Kuner, nautical opticia 94 Columbia street, Colman building, Seattle, for t following interesting description of the standardizing the Aneroid barometer as daily practised b...
- Enlarging For Beginners
- Alar. Amateurs usually find or imagine enlarging very difficult or costly, and it is for them that I feel in-spired to write a few practical hints on the subject from my own experience. The ve...
- Construction And Management Of Gasoline Engines. X. Reversing Gears
- CARL H. CLARK The gasoline engine, unlike the steam engine, has no ready means of reversing. Although most two cycle and some four cycle engines will run in either direction, the means of accomplis...
- Long Distance Telephoning
- The use of the copper wire for the telephonic service was the beginning of its great extension. The New York Tribune says that the first copper telephone wire was about the size Of tthe iron telegraph...
- Handy Hints Prize Offer
- Our recent prize offer for articles from readers produced a large number of contributions, but the limited number of prizes prevented all but a few from being accepted. Another prize offer is therefor...
- An Old English Bureau
- John F. Adams The bureau here described is a companion piece to the bedstead shown in the priveious issue of this magazine. The peculiar feature of the bedstead, the spindles, cannot be embodied in...
- Perspective Views Without Skill
- It sometimes happens that a perspective picture is wanted, either for an assembled view, accompanied by a mechanical drawing of the part, or for other reasons, where a skilled artist is not available ...
- Jig For Sharpening Tools On An Oil Stone
- Edmund S. Smith For the benefit of amateur workers who have found difficulty in keeping a good sharp edge on plane irons, chisels, etc., a device is described below which, if properly made and used...
- A Twenty Five Foot Auxiliary Yawl. V. Cabin Trunk and Rudder
- CARL H. CLARK Before completing the cabin trunk construction it will be well to build the center-board trunk as it is much more convenient to work inside the boat before the cabin beams are put in....
- New Books Received #2
- HENLEY'S ENCYCLOPEDIA OF PRACTICAL ENGINEERING AND ALLIED TRADES. Edited by Joseph G. Horner. 6 volumes of about 500 pages each, 99 3/4 x 7 1/2 inches. Copiously illustrated. Price, per set, $25; per ...
- Elements Of Dynamo Design. III. Equasion of the Dynamo. The Armature
- IRA M. CUSHING Before proceeding into the fundamental equation of the dynamo, the principle under which the current is generated must be studied. In 1831 Faraday discovered that if a closed conduct...
- Electrical Methods of Measuring Temperatures
- So much attention is now being paid to the determination of high temperatures in industrial processes where a rough guess was formerly considered good enough for practical purposes, that it is well to...
- A Tool Cabinet For Bench Workers
- Walter Scott This tool cabinet I consider the most convenient for bench workers of any I have ever seen. It can be carried or shipped as easy as any tool chest and it is surprising the number of to...
- Starting A Shop
- After reading the articles by Entropy, Dixie and others, I thought perhaps my experience in starting my shop would be of interest. I have always read with much interest all articles that applied to sm...
- Adjustable Condenser
- Oscar F. Dame During a recent visit to a large wireless telegraph station, I observed in use a special type of condenser of very simple construction, and when immersed in insulating oil, so highly ...
- Recent Wireless Achievements
- Some extremely successful results in the employment of wireless telegraphy have recently been recorded in the case of certain of the vessels of the North -German Lloyd Company provided with Marconi ap...
- Log Holder For Fireplace
- James Hunter In a residence having fireplaces in which wood is used as the fuel, the storing of a suitable supply of wood near the fireplace is attended with dirt and chips unless some receptacle i...
- Volcanoes Vents In The Earth
- At the last meeting of the Boston Scientific Society, Professor George H. Barton spoke in a very interesting way on Volcanoes, his paper having been called forth by the recent events in the way of ...
- A Pocket Wireless Outfit
- An English electrical engineer, Mr. Ernest Oldenburg, has recently invented a new telegraphic receiver which, it is claimed, is sensitive enough to detect the most delicate impulses which a pocket bat...
- Science And Industry #4
- There are mining engineers who are paid $25,000 annual salary, and that is not considered the limit, as some distinguished members of the professions are credited with receiving more than that. Such a...
- Wood And Metal Xylaphones
- The xylophone and harmonica are musical instruments that have been in use, probably, for thousands of years. The xylophone, known also as the gigelire (pronounced je-je-le-ra, Italian for fiddle-lyre)...
- Wood And Metal Xylaphones. Continued
- Before fastening in the glasses, simply lay them on the strings and try them, changing them about until their proper places are found. To sharpen a note, cut the glass a trifle shorter. For glass 1...
- A Folding Trestle
- Herewith is a sketch of a tressle which may be readily taken down and stored away in some small corner of the shop, writes W. E. Morey in the American Machinist. The top bar or rail A is pr...
- Drilling Holes In Glass Plates
- The method of drilling holes in glass plates is to take an old twist drill, see that it is properly sharpened, and harden it by beating the point to a cherry red over a gas flame, and quench in ordina...
- Powerful Electric Locomotive
- One of the two powerful electric locomotives recently designed by the Boston Elevated Railway company for heavy yard and general haulage service on the elevated division has already been completed and...
- "Wireless" Without Aerials
- I have read with much interest in your first issue of March, an article describing the erection of poles towers, etc., for the support of aerial wires in connection with radio-telegraphic apparatus, a...
- Electric Pipe Thawing
- Electric Pipe Thawing has been successful in Ottawa, Can., according to City Engineer Newton J. Ker. Current is taken from the wires of the Ottawa Electric Light Co. and reduced by transformers to abo...
- Decorative Enamelling. III. Designs for Buttons in Champleve Enamel
- I enamelling on the method called champleve, the cells to receive the enamel are cut out of the metal by means of scorpers. The metal used should be fairly stout, at least 3/32 of an inch in thickness...
- Antimony
- Antimony is a white metal which fuses at a low temperature and is readily vaporized, says the American Machinist. It is of a laminated or crystalline textile and is very brittle. It is used in several...
- Fitting Out Yachts
- George H. Collyer Much preparatory work of fiting out can be accomplished early in the spring, long before it is practical to commence work upon the hull, unless the boat is under cover. Hoops, ...
- A Twenty Five Foot Auxiliary Yawl. VI. Cabin Fittings-Installing Engine
- Carl H. Clark A slide or hatch must now be fitted over the opening in the cabin roof. It is shown in detail in Fig. 27, and consists of two side pieces, with a groove about 1/2 in. square on the in...
- Use Of Alcohol And Gasoline In Farm Engines
- The United States Department of Agriculture has published in Farmers' Bulletin, No. 277, a very complete report, entitled The Use of Acohol and Gasolene in Farm Engines, by Charles Edward Lucke, ass...
- Use Of Alcohol And Gasoline In Farm Engines. Continued
- The efficiency of an alcohol engine may be assumed at this time to be unknown, but as alcohol can be burned in engines designed for gasolene, it may be assumed that such an engine will have with alcoh...
- What Coinstitutes The Area of the United States?
- The question, What coinstitutes the area of the United States? would seem to the ordinary layman a simple one; but according to Bulletin 302 of theUnited States Geologial Survey, of which Henry Gann...
- Introduction 4
- Owing to a serious accident this issue is much delayed. We are making a big hustle and expect to issue the May number about on time. The patterns for the 75-watt and 150-watt dynamos recently descr...
- Sodium Transmission Lines
- The use of sodium for overhead transmission is attracting the attention of electricians. It is said to be cheap and a good conductor of electricity, but as its marked affinity with oxygen causes it to...
- Construction And Management Of Gasoline Engines. XI. Installiing Engines-Under Water Exhaust
- Carl H. Clark The first question in the installation of the engine will be the bed, or foundation. Fig. 74 shows one of. the most approved methods of construction, the bed. The two side pieces B, u...
- Construction And Management Of Gasoline Engines. Installiing Engines-Under Water Exhaust. Continued
- If desired, a double suction may be fitteed to the pump, one branch leading as above and the other leading to the bilge inside. A valve in each branch will allow either to be used as desired. In this ...
- Best Education For Mechanics
- The question as to the advisability of young men and boys in manufacturing establishments, such as that of the Crane Co., spending their time and money in taking up studies in technical schools, is on...
- History Of The Gas Engine
- Like almost all great inventions the gas engine is the product of many minds. It didn't suddenly happen, but has been gradually improved. In fact the modern motor is similar in many respects to some o...
- Elements Of Dynamo Design. IV. Transforming; Alternations to give Direct Current in Circuit
- Ira M. Cushing The next step should be a consideration of the alternating E. M. F. impressed on circuit F from the rings and brushes, R and T in Fig. 10. A little though would clearly show that the...
- Tests Of Invention
- John E. Brady In a previous article it was stated that a patent cannot be properly be granted protecting the poduct of mere mechanical skill as distinguished from invention. Difficulty is frequentl...
- Method Of Plating Large Pieces
- Occasionally it is desirable to protect metals by plating them with copper or other metal, but this can not be done conveniently because of the large size of vat which would be necessary in order to s...
- Boring Core-Box For Gas Engine
- Perhaps the way I bored out a core box for a small gas engine is not new to all of your readers, but at the same time it may interest others, writes Yrdnal, in American Machinist. A 3-horse-power...
- Vaporizing Gold
- Professor Moissan, in vaporizing gold in the electric furnace, find that 100 to 150 gr. can be evaporated in two or three minutes. By condensing the gold vapor on a cool surface, either filiform masse...
- First Photograph Of The Yacht America Under Sail
- Probably no American yacht has been oftener pictured than the famous schooner America, yet the negative of the ret photograph made of her while under way is preserved in Boston today. It was made n...
- Books Received 4
- PRACTICAL UP-TO-DATE PLUMBING. George B. Clow. 264 pp. 7 1/2x5 inches, 250 illustrations. Cloth, $1.50. Frederick J. Drake & Co., Chicago, III. Plumbing is today a subject of much importance ...
- A Warship On Land 45 Years
- Next to the much-beloved frigate Constitution, the old ship of the line Granite State is the oldest vessel in the navy on the active list. Quite singular and interesting are the facts in connection...
- New Telegraph Railway Signal
- The attention of railroad men has been attracted to the telegraph railroad signal for the manufacture of which the Telegraph Signal Company has been organized at Rochester, N. Y. The signal is the inv...
- Malleable Cast Iron
- When properly made malleable cast iron should have a tensile strength of 42,000 to 48,000 lb. per square inch, with an elongation of 5 per cent, in 2 in. Bars 1 in. square, and on supports 12 in. apar...
- Thin Negatives In The Ascendant
- James Thomson That the ultimate purpose,-the end of all photographic endeavor insofar as the average amateur is concerned, is the pictorial expression,-the arrangement of lights and darks in what i...
- Science And Industry #5
- Concrete is a troublesome material in which to drill deep holes; it is a good plan to use water under pressure, with a wide flare bit, permitting a small copper waterpipe to be inserted nearly to the ...
- Amateur Work 1907 News #1
- A temperature of -60 to -80 F. is not dangerous to human beings who are properly clothed, if the air is still, while 30 or 40 higher, if accompanied by a gale of wind would kill every living...
- Amateur Work 1907 News #2
- Distillation is the only process to obtain absolutely pure water. In the United States navy water aerated during distillation and run through a bone black filter for the purpose of improving its taste...
- Amateur Work 1907 News #3
- The touchstone of the jeweler is known as basanite, a silicious rock or jasper of a velvety, black color. It is used to determine the amount of alloy in gold, the mark of the specimen on the stone bei...
- Amateur Work 1907 News #4
- Given two young men of equal ability, and let both of them go through good technical schools, both graduating as chemists, or as mining, mechanical, civil or electrical engineers. The one during the c...
- Amateur Work 1907 News #5
- The Use of Copper Sulphate as an algicide and disinfectant in water supplies has been tried practically under so many conditions that definite data regarding it are gradually becoming available. The c...
- Amateur Work 1907 News #6
- The sacred fires of India have not all been extinguished. The most ancient which still exists was con secrated twelve centuries ago, in commemoration of the voyage made by the Parsees when they emigra...
- Amateur Work 1907 News #7
- New Zealand has 2,374 miles of railroad in an area of 104,000 square miles. Approximately 30 per cent, of the cost of producing iron ore in the Lake Superior region constitutes mining supplies. ...
- Amateur Work 1907 News #8
- The only commercially successful method of producing aluminum is by electrolysis, and all attempts at making aluminum in the electric furnace by reduction of aluminum with carbon have been unsuccessfu...
- Amateur Work 1907 News #9
- The turquoise runs in blue veins through the rocks, with now and then the concretions called nuggets, which afford stones of value. At the present time the bulk of the world's supply of fine turquoise...
- Amateur Work 1907 News #10
- Mica is much used in electrical machinery, as an insulator beteween the segments of commutators. For this purpose the mica must be sott. Large sheets of mica are in demand for lamp chimneys and other ...
- Amateur Work 1907 News #11
- Most of the obelisks in existence were taken from the quarries of Syene in Upper Egypt, and are of red granite or syenite They are the monolyths of the ancients. Some of them measure over 100 feet, an...
- Amateur Work 1907 News #12
- One gallon of water weighs 8.33 pounds and contain 231 cubic inches. One cubic foot of water weighs 68.5 pounds and contains 1728 cubic inches or 7.5 gallons. A miner's inch is a flow of water equal t...
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