The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 1193
two, or three threads works with a larger wheelof many threads, it becomes a worm-gear, or endless screw, the smallerwheel or driver being called the worm, and the larger, or driven wheel,the worm-wheel. With this arrangement a high velocity ratio may beobtained with a single pair of wheels. For a… … 1144 To find the diameter of a worm-wheel at the throat, number of teeth andpitch of the worm being given: Add 2 to the number of teeth, multiply the sum by 0.3183, andby the pitch of the wormin inches. To find the number ofteeth, diameter at throatand pitch of worm beinggiven: Divide 3.1416times…
Mechanical engineering
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