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 208
ed in a direction opposite tothe motion of the hands of a clock. Such a thread isshown in Figs. 336 and 337. Screws maybe eithersingle-threaded or double-threaded. If we assumethat a screw consists of a cylinder with a coil form-ing the thread wound around it, we may easily definea double screw as…
Mechanical drawing · Machine design
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