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Practical Mechanics for Boys   By: (1850-)

Book cover

First Page:

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... Continue reading book >>




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