Practical Mechanics for Boys
- Language
- EN
- Format
- EPUB
- Size
- 1.4 MB
Description
This work is a technical manual designed for young readers, focusing on practical mechanics. It presents fundamental concepts related to mechanical tools, their proper handling, and basic principles of mechanics. The book is organised into sections that cover a variety of tools such as vises, lathes, chisels, and grinding apparatus, providing straightforward instructions suitable for beginners. Its language aims to clarify the correct use and maintenance of these tools, making it accessible to a juvenile audience interested in learning mechanical arts. The text also reflects early 20th-century educational approaches, emphasising hands-on learning and individual skill development over apprenticeship models used abroad.
The book opens with an overview of American teaching methods in mechanical arts, contrasting them with foreign apprenticeship systems. It then proceeds to detailed descriptions of tools, their functions, and proper handling techniques, including sharpening and setting tools, lathe operation, and safety considerations. The emphasis remains on foundational mechanical skills appropriate for young learners seeking practical knowledge.
The book opens with an overview of American teaching methods in mechanical arts, contrasting them with foreign apprenticeship systems. It then proceeds to detailed descriptions of tools, their functions, and proper handling techniques, including sharpening and setting tools, lathe operation, and safety considerations. The emphasis remains on foundational mechanical skills appropriate for young learners seeking practical knowledge.
From the opening pages
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. p. ii 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. p. iii 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…
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