JUST PUBLISHED

8vo, Cloth, 291 pp., Illustrated. Price, $3.00 net.

MACHINE DESIGN:

FASTENINGS

By Prof. WILLIAM LEDYARD CATHCART Columbia University.

CONTENTS:

1. Shrinkage and Pressure Fits.- General Formulæ for stresses, allowances, and pressures. Proportions of the Joint. Metals. Forcing Pressures. Shrinkage Temperatures. Shinkage vs. Pressure Fits. Data from Practice: stationary engines, marine engines, railway work. Shrinkage in Gun Construction: shrinkage formula, methods of gun construction.

II. Screw Fastenings.-Geometry of the Screw. Triangular vs. Square Threads. Requirements of Screw Thread. Elements of Screw Thread. The Sharp V, Sellers, Whitworth, French Standard, International Standard, and British Association Threads. Square Thread. -V Thread. Special Threads. Machine and Wood Screws. Pipe Threads. Stresses in Screw-Bolts. Stresses in Nuts. Efficiency of the Screw. Types of Screw Fastenings. Processes of Manufacture. Materials. Nut Locks. Wrenches.

III. Riveted Joints. Rivets. Proportions of Rivets. Rivet and Plate Metals. Rivet-Holes. Boiler-Joints: longitudinal, circumferential, helical. Forms of Joints. Elements of a Riveted Joint. Theoretical Strength of Joints. Stresses in Joints. Flate-Friction. Tests. BoilerJoints: marine, land, locomotive. Hull Work. Structural Work. Structural Work. Riveting Machines.

IV. Machine Keys and Pins.-Types. Stresses. Proportions. Data

from Practice.

D. VAN NOSTRAND COMPANY

PUBLISHERS AND BOOKSELLERS 23 Murray and 27 Warren Street: New York.

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