Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 340
1363. REVOLVING RAPID-BLOW HAM-MER.—The centrifugal aciion of the revolvingarms throws the hammers outward. 1364. HELVE TRIP HAM-MER.—An ancient device yet inuse. The treadle stops the actionof the hammer by disengaging thebell-crank catch b. Used for smallwork. MILL AND FACTORY APPLIANCES. 33^ … 1365. FRICTION DROP HAMMER.—The ham-mer head is attached to a hardwood board running be-tween friction rolls. One of the rolls has an eccentricsleeve shaft with a lever and lanyard to throw the rollout of contact with the board at the proper time forlong or short drop. The other roll and shaft…
Mechanical movements
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