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Mechanical movements, powers and devices (1911)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 246
915. INTERNAL WORM^EAR WHEEL fordriving a spur-gear pinion. … 916. WORM-GEAR PINION to drive an inter-nal spur-gear wheel.Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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