Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 249
,m,»m;^^7777m Fig. 415. Fig. 416. The arms of pulleys are usually straight, butsometimes they are curved, as shown in Figs. 413 … Fig. 417, and 414. It is the general practice in machineshops to draw the section of a pulley, as shown inFig. 416, no matter what shape the arms may have. The straight-armed pulley is simplest in appear-ance and construction. There is no fixed rule forthe number of arms in a pulley. Usually those…
Mechanical drawing · Machine design
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