The Project Gutenberg EBook of 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: ASCII

*** START OF THIS PROJECT GUTENBERG EBOOK PRACTICAL MECHANICS FOR BOYS ***

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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 F