Shop practice for home mechanics, use of tools, shop processes, construction of small machines. Contains a chapter also on theoretical mechanics and on miscellaneous information relative to shop work (1920)
Yates, Raymond F. (Raymond Francis), 1895- · New York, N. W. Henley Pub. Co. · leaf 29
illustrated in Fig.18. By the aid of a wedge, a man is enabled to raise atremendous weight. It must be constantly borne in mindthat the same power is necessary to raise a given weighta given distance. A small force applied for a greatlength of time is equal to a great force applied for ashort time.… … Fig. 19—Showing the use of the jack The screw is an inclined plane and a great force canbe applied by its aid. The jack (Fig. 19) is an applica-tion of the screw or inclined plane, and Avith it a singleman can lift tremendous weights. The jack is really acombination of the inclined plane and the…
Machine-shop practice · Handicraft
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