Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 41
30 TRANSMISSION OF POWER; ^ 7^ 55. ROPE SPROCKET WHEEL, several modi,fications of which are in use in old-style hoists. _J … 56. r-GROOVED ROPE PULLEY, havingcorrugated groove faces to increase the adhesion ofthe rope. 57. ROPE TRANSMISSION, with a tighteningpulley, B. 58. VIBRATORY MOTION to two shafts,transmitted from the rocking of a lever armand sector.
Mechanical movements
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