Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 342
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… … 1366. BEAM TRIP HAMMER. —The beam is vibrated by an ec-centric on the driving shaft. Thecushions intensify and regulate theblow of the hammer. The treadleoperates the brake and controls theblow of the hammer. * Bradleypattern.
Mechanical movements
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