Practical Mechanics for Boys

Practical Mechanics for Boys, by J. S. Zerbe

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Title: Practical Mechanics for Boys
Author: J. S. Zerbe
Release Date: August 11, 2007 [EBook #22298]
Language: English
Character set encoding: ISO-8859-1
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THE "HOW-TO-DO-IT" BOOKS
PRACTICAL MECHANICS FOR BOYS

THE "HOW-TO-DO-IT" BOOKS
PRACTICAL MECHANICS FOR BOYS
In language which every boy can understand and so arranged that he may readily carry out any work from the instructions given.
WITH MANY ORIGINAL ILLUSTRATIONS
By J. S. ZERBE, M.E.
Author of
CARPENTRY FOR BOYS ELECTRICITY FOR BOYS
M. A. DONOHUE & COMPANY
CHICAGO :: NEW YORK
COPYRIGHT, 1914, BY THE NEW YORK BOOK COMPANY
Made in U. S. A.

CONTENTS
INTRODUCTORY Page 1
I. ON TOOLS GENERALLY Page 7
Varied Requirements. List of Tools. Swivel Vises. Parts of Lathe. Chisels. Grinding Apparatus. Large Machines. Chucks. Bench Tools. Selecting a Lathe. Combination Square. Micrometers. Protractors. Utilizing Bevel Protractors. Truing Grindstones. Sets of Tools. The Work Bench. The Proper Dimensions. How Arranged.
II. HOW TO GRIND AND SHARPEN TOOLS Page 26
Importance of the Cutting Tool. The Grinder. Correct Use of Grinder. Lathe Bitts. Roughing Tools. The Clearance. The Cutting Angle. Drills. Wrong Grinding. Chisels. Cold Chisels. System in Work. Wrong Use of Tools.
III. SETTING AND HOLDING TOOLS Page 34
Lathe Speed. The Hack-saw. Hack-saw Frame. The Blade. Files. Grindstones. Emery and Grinding Wheels. Carelessness in Holding Tools. Calipers. Care in Use of Calipers. Machine Bitts. The Proper Angle for Lathe Tools. Setting the Bitt. The Setting Angle. Bad Practice. Proper Lathe Speeds. Boring Tools on Lathe. The Rake of the Drill. Laps. Using the Lap. Surface Gages. Uses of the Surface Gage.
IV. ON THE FIRST USE OF THE FILE Page 48
The First Test. Filing an Irregular Block. Filing a Bar Straight. Filing Bar with Parallel Sides. Surfacing Off Disks. True Surfacing. Precision Tools. Test of the Mechanic. Test Suggestions. Use of the Dividers. Cutting a Key-way. Key-way Difficulties. Filing Metal Round. Kinds of Files. Cotter-file. Square. Pinion. Half-round. Round. Triangular. Equalizing. Cross. Slitting. Character of File Tooth. Double Cut. Float-cut. Rasp Cut. Holding the File. Injuring Files. Drawing Back the File.
V. HOW TO COMMENCE WORK Page 61
Familiarity with Tools. File Practice. Using the Dividers. Finding Centers. Hack-saw Practice. Cutting Metal True. Lathe Work. First Steps. Setting the Tool. Metals Used. The Four Important Things. Turning Up a Cylinder. Turning Grooves. Disks. Lathe Speeds.
VI. ILLUSTRATING SOME OF THE FUNDAMENTAL DEVICES Page 68
Belt Lacing. Gears. Crown Wheel. Grooved Friction Gearing. A Valve which Closes by the Water Pressure. Cone Pulleys. Universal Joint. Trammel for Making Ellipses. Escapements. Simple Device to Prevent a Wheel or Shaft from Turning Back. Racks and Pinions. Mutilated Gears. Simple Shaft Coupling. Clutches. Ball and Socket Joints. Tripping Devices. Anchor Bolt. Lazy Tongs. Disk Shears. Wabble Saw. Crank Motion by a Slotted Yoke. Continuous Feed by Motion of a Lever. Crank Motion. Ratchet Head. Bench Clamp. Helico-volute Spring. Double helico-volute. Helical Spring. Single Volute Helix Spring. Flat Spiral, or Convolute. Eccentric Rod and Strap. Anti-dead Center for Lathe.
VII. PROPERTIES OF MATERIALS Page 79
Elasticity. Traction. Torsion. Flexure. Tenacity. The Most Tenacious Metal. Ductility. Malleability. Hardness. Alloys. Resistance. Persistence. Conductivity. Equalization. Reciprocity. Molecular Forces. Attraction. Cohesion. Adhesion. Affinity. Porosity. Compressibility. Elasticity. Inertia. Momentum. Weight. Centripetal Force. Centrifugal Force. Capillary Attraction. The Sap of Trees. Sound. Acoustics. Sound Mediums. Vibration. Velocity of Sound. Sound Reflections. Resonance. Echos. Speaking Trumpet. The Stethoscope. The Vitascope. The Phonautograph. The Phonograph. Light. The Corpuscular Theory. Undulatory Theory. Luminous Bodies. Velocity of Light. Reflection. Refraction. Colors. The Spectroscope. The Rainbow. Heat. Expansion.
VIII. HOW DRAUGHTING BECOMES A VALUABLE AID Page 95
Lines in Drawing. Shading. Direction of Shade. Perspectives. The Most Pronounced Lines. Direction of Light. Scale Drawings. Degree, and What it Means. Memorizing Angles. Section Lining. Making Ellipses and Irregular Curves. Focal Points. Isometric and Perspective. The Protractor. Suggestions in Drawing. Holding the Pen. Inks. Tracing Cloth. Detail Paper. How to Proceed. Indicating Material by Section Lines.
IX. TREATMENT AND USE OF METALS Page 112
Annealing. Toughness and Elasticity. The Process. Tempering. Tempering Contrasted with Annealing. Materials Used. Gradual Tempering. Fluxing. Uniting Metals. Alloying Method. Welding. Sweating. Welding Compounds. Oxidation. Soldering. Soft Solder. Hard Solder. Spelter. Soldering Acid. The Soldering Iron.
X. ON GEARING, AND HOW ORDERED Page 121
Spur and Pinion. Measuring a Gear. Pitch. Diametral Pitch. Circular Pitch. How to Order a Gear. Bevel and Miter Gears. Drawing Gears. Sprocket Wheels.
XI. MECHANICAL POWER Page 128
The Lever. Wrong Inferences from Use of Lever. The Lever Principle. Powers vs. Distance Traveled. Power vs. Loss of Time. Wrongly-Directed Energy. The Lever and the Pulley.