Taggart, William Scott · London : George Routledge & Sons, Ltd. · leaf 23
A = revs. of B Fi^20. — = - = 66 revs, of B.30 3 Worm and Worm - Wheel.—When a large reduction inspeed is required, practical considerations prevent the use of avery small wheel driving a very large wheel, or the use ofseveral compound carriers. In such cases a worm and worm-wheel are used. The… … simply a portion of a screw of a suitable pitch, and into thespaces of which the teeth of a wheel B are geared. Fig.23A shows the worm and a portion ofthe worm-wheel enlarged. The screw-thread is an inclined surface, so thatas the worm revolves the helical threadwill move the teeth of the…
Textile machinery
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
