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 250
of two opposite pulleysin a series of steps must be the same for all steps,as only with this condition will a crossed belt fit anypair of pulleys in the series. Fig. 420 shows three sets of pulleys which maybe arranged into a step pulley with three sets orsteps. The distances between each set of… … Fig. 418. The above statement does not hold true for openbelts. The middle sections of cone pulleys for open 276 ROGERS DRAWING AND DESIGN. belts must be larger proportionately than for crossedbelts. In the pair of cone pulleys shown in Figs. 421 and422, both are made alike, and the first one makes…
Mechanical drawing · Machine design
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