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Practical Mechanics For Boys | by James Slough Zerbe



It is not the intention of the book to make every boy who reads and studies it, a machinist; nor have we any desire to present a lot of useful articles as samples of what to make. The object is to show the boy what are the requirements necessary to make him a machinist; how to hold, handle, sharpen and grind the various tools; the proper ones to use for each particular character of work; how the various machines are handled and cared for; the best materials to use; and suggest the numerous things which can be done in a shop which will pave the way for making his work pleasant as well as profitable.

TitlePractical Mechanics For Boys
AuthorJames Slough Zerbe
PublisherM. A. Donohue & Company
Year1914
Copyright1914, The New York Book Company
AmazonPractical Mechanics for Boys

James Slough Zerbe

Author Of "Carpentry For Boys", "Electricity For Boys".

-List Of Illustrations
FIG. PAGE 1. Bench vise 8 2. Pipe grip for vise 9 3. Swivel vise 10 4. Speed lathe 11 ...
-Practical Mechanics For Boys. Introductory
The American method of teaching the mechanical arts has some disadvantages, as compared with the apprentice system followed in England, and very largely on the continent. It is too often the case t...
-Chapter I. On Tools Generally
Judging from the favorable comments of educators, on the general arrangement of the subject matter in the work on Carpentry for Boys, I am disposed to follow that plan in this book in so far as it p...
-On Tools Generally. Continued
Bench Tools Of bench tools, a 3-inch vise, various files, center punch, two hammers, round and A-shaped peons, hack saw, compasses, inside and outside calipers, screw driver, cold chisels, metal sq...
-Chapter II. How To Grind And Sharpen Tools
It is singular, that with the immense variety of tools set forth in the preceding chapter, how few, really, require the art of the workman to grind and sharpen. If we take the lathe, the drilling mach...
-Chapter III. Setting And Holding Tools
Some simple directions in the holding and setting of tools may be of service to the novice. Practice has shown the most effective way of treating different materials, so that the tools will do the mos...
-Setting And Holding Tools. Continued
The Proper Angle For Lathe Tools Now there is a reason why the angle of from 10 to 15 should be maintained in the clearance. The point of the tool must have suitable support for the work it is requ...
-Chapter IV. On The Use Of The File
The most necessary tool in a machine shop is a file. It is one of the neglected tools, because the ordinary boy, or workman, sees nothing in it but a strip or a bar with a lot of cross grooves and edg...
-On The Use Of The File. Continued
Key-Way Difficulties But the trouble commences when the groove is filed for the depth. Invariably, the mistake will be made of filing the width first, so the key will fit in. As a result, in deepen...
-Chapter V. How To Commence Work
The question is often asked: Where and how shall the novice commence work? When the shop is equipped, or partially so, sufficient, at least, to turn out simple jobs, the boy will find certain tools...
-Chapter VI. Illustrating Some Of The Fundamental Devices
There are numerous little devices and shop expedients which are desirable, and for which the boy will find uses as he progresses. We devote this chapter to hints of this kind, all of which are capa...
-Illustrating Some Of The Fundamental Devices. Continued
Fig. 75. Clutches. - This is a piece of mechanism which is required in so many kinds of machinery, that we show several of the most approved types. Fig. 76. Ball and Socket Joints. - The mos...
-Chapter VII. Properties Of Materials
A workman is able to select the right metals because he knows that each has some peculiar property which is best adapted for his particular use. These with their meaning will now be explained. Elas...
-Properties Of Materials. Part 2
Compressibility It follows from the foregoing statement, that if there are little interstices between the molecules, the various bodies can be compressed together. This can be done in varying degre...
-Properties Of Materials. Part 3
Sound Reflections Sound waves move outwardly from the object in the form of wave-like rings, but those concentric rings, as they are called, may be interrupted at various points by obstacles. When ...
-Chapter VIII. How Draughting Becomes A Valuable Aid
The ability to read drawings is a necessary part of the boy's education. To know how to use the tools, is still more important. In conveying an idea about a piece of mechanism, a sketch is given. Now,...
-How Draughting Becomes A Valuable Aid. Continued
Degree, And What It Means A degree is not a measurement. The word is used to designate an interval, a position, or an angle. Every circle has 360 degrees, and when a certain degree is mentioned, it...
-Chapter IX. Treatment And Use Of Metals
Annealing A very important part of the novice's education is a knowledge pertaining to the annealing of metals. Unlike the artisan in wood, who works the materials as he finds them, the machinist c...
-Chapter X. On Gearing And How Ordered
The technical name for gears, the manner of measuring them, their pitch and like terms, are most confusing to the novice. As an aid to the understanding on this subject, the wheels are illustrated, sh...
-Chapter XI. Mechanical Powers
The Lever The lever is the most wonderful mechanical element in the world. The expression, lever, is not employed in the sense of a stick or a bar which is used against a fulcrum to lift or push so...
-Mechanical Powers. Continued
Sources Of Power Power is derived from a variety of sources, but what are called the prime movers are derived from heat, through the various fuels, from water, from the winds and from the tides and...
-Chapter XII. On Measures
Horse-Power When work is performed it is designated as horse-power, usually indicated by the letters H. P.; but the unit of work is called a foot pound. If one pound should be lifted 550 feet in...
-Metrical Table, Showing Measurements In Feet And Inches
Metrical Table, showing measurements in feet and inches: Length Inches Feet Millimeter 0.039 0.003 Centimeter 0.393 0.032 ...
-Chapter XIII. Useful Information For The Workshop
To find the circumference of a circle: Multiply the diameter by 3.1416. To find the diameter of a circle: Multiply the circle by .31831. To find the area of a circle: Multiply the square of the ...
-Chapter XIV. The Simplicity Of Great Inventions, And Of Nature's Manifestations
If there is anything in the realm of mechanics which excites the wonder and admiration of man, it is the knowledge that the greatest inventions are the simplest, and that the inventor must take advant...
-The Simplicity Of Great Inventions, And Of Nature's Manifestations. Continued
Qualities Of Sound Sound is nothing but a succession of vibrations of greater or less magnitude. Pitch is produced by the number of vibrations; intensity by their force; and quality by the characte...
-Chapter XV. Workshop Recipes And Formulas
In a work of this kind, dealing with the various elements, the boy should have at hand recipes or formulas for everything which comes within the province of his experiments. The following are most car...
-Workshop Recipes And Formulas. Part 2
Explosives Common Gunpowder. Potassium nitrate, 75 parts; charcoal, 15 parts; sulphur, 10 parts. Dynamite. 75 per cent. nitro-glycerine; 25 per cent. infusorial earth. Giant Powder. 36 per ce...
-Workshop Recipes And Formulas. Part 3
Photography Developers. 1. Pure water, 30 ounces; sulphite soda, 5 ounces; carbonate soda, 2 1/2 ounces. 2. Pure water, 24 ounces; oxalic acid, 15 grains; pyrogallic acid, 1 ounce. To deve...
-Chapter XVI. Handy Tables. Table Of Weights For Round And Square Steel
The Estimate is on the basis of Lineal Feet. 1 cu. ft. of Steel490 lbs. Sizes inInches Weight in Pounds Sizes inInches Weight in Pounds Round Square ...
-Strength Of Various Metals
The tests are made by using a cubic inch of the metal and compressing it, and by trying to draw apart a square inch of metal. Indicated in pounds Tension Compression ...
-Freezing Mixtures
Mixtures Temperature Changes inDegrees Fahrenheit From To Common salt, 1 part; snow, 3 parts 32 zero .0 ...
-Ignition Temperatures
Phosphorus 120 degrees Fahrenheit Bi-sulphide of carbon 300 Gun-cotton 430 Nitro...
-Power And Heat Equivalents
In studying matters pertaining to power and heat, certain terms are used, such as horsepower, horsepower-hours, watts, watt-hours, kilowatt, kilowatt-hours, foot-pounds, joule, and B. T. U. (British T...
-Chapter XVII. Inventions And Patents, And Information About The Rights And Duties Of Inventors And Workmen
There is no trade or occupation which calls forth the inventive faculty to a greater degree than the machinist's. Whether it be in the direction of making some new tool, needed in some special work, o...
-Glossary Of Words Used In Text Of This Volume
Abrupt Suddenly; coming without warning. Abrasive A material which wears away. Actuate Influenced, as by sudden motive; incited to action. Accumulate To bring together; to amass; ...
-Glossary Of Words Used In Text Of This Volume. Part 2
Buffeted Thrown back. Bronze An alloy of copper and tin. Calcium Lime. Cant A form of lever. Carbonate A salt of carbonic acid. Caustic Capable of corroding or eating...
-Glossary Of Words Used In Text Of This Volume. Part 3
Cohesion The force by which the molecules of the same kind are held together. Concentric A line which is equidistant at all points from a center. Confined Held within certain bounds. ...
-Glossary Of Words Used In Text Of This Volume. Part 4
Dimension Measurement; size. Ductility That property of metal which permits it to be drawn out, or worked. Dividers An instrument, like a compass, for stepping off measurements, or maki...
-Glossary Of Words Used In Text Of This Volume. Part 5
Formulate To arrange; to put in order from a certain consideration of things. Focus The center of a circle. Foci One of the points of an ellipse. Formation The structure of a mach...
-Glossary Of Words Used In Text Of This Volume. Part 6
Indentations Recesses, or cut-out parts or places. Induction The movement of electricity through the air from one conductor to another. Inflammable That which will burn. Inclining ...
-Glossary Of Words Used In Text Of This Volume. Part 7
Multiplicity Many; numerous; a large quantity. Mutilated As applied to a gear, one in which certain teeth are removed. Nautical Marine; applied to shipping, and the like. Neutralizes...
-Glossary Of Words Used In Text Of This Volume. Part 8
Potential The power. Properties The qualities possessed by all elements. Projecting The throwing forward. The sending out. Promulgated Put forth; enunciated. Protractor A m...
-Glossary Of Words Used In Text Of This Volume. Part 9
Shaper A large tool for surfacing off material, cutting grooves, and the like. Shrinkage The term applied to metals when cast, as all will be smaller when cold than when cast in the mold. ...
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12mo, cloth. Price 75c each. Contains an attractive assortment of books for boys by standard and favorite authors. Printed from large, clear type on a superior quality of paper, bound in a superior...
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12mo, cloth. Price 75c each. Contains an assortment of attractive and desirable books for girls by standard and favorite authors. The books are printed on a good quality of paper in large clear typ...
-The "How-To-Do-It" Books. Carpentry For Boys
A book which treats, in a most practical and fascinating manner all subjects pertaining to the King of Trades; showing the care and use of tools; drawing; designing, and the laying out of work; the ...
-Electricity For Boys
The author has adopted the unique plan of setting forth the fundamental principles in each phase of the science, and practically applying the work in the successive stages. It shows how the knowledge ...
-Practical Mechanics For Boys
This book takes the beginner through a comprehensive series of practical shop work, in which the uses of tools, and the structure and handling of shop machinery are set forth; how they are utilized to...
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