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 251
e 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 Nrevolutions per minute; let it be required that the equal the small diameter multiplied… … Fio. 419. second pulley should have a range of speed fromm to n revolutions, m beine the greater number.Then N must equal the square root of the productof m and n, thus, N ^ Vm x n. The large diameter in the cone pulleys must cone pulley, then the proper middle diameter is 1 , D + d oo8 (D-d)= , r…
Mechanical drawing · Machine design
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