Pile hammer

Details Pile hammer Pile hammer

1981-09-08

1985-03-26

Bell, Paul A.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

175 56, 173128, 173162R, B25D 4516, B25D 1104, E21C 302, E21B 406

Patent

active

045067449

ABSTRACT:
A hammer for driving piles comprises an anvil adapted to rest on top of a pile to be driven and a weight arranged to travel through a stroke between an upper position and a lower position. At least one flexible member interconnects the anvil and weight in such a way that when the weight travels to its lower position the flexible member is in tension and prevents the weight striking the anvil. The tension in the flexible member transfers the energy of the weight in a progressive fashion to the anvil.

REFERENCES:
patent: 90786 (1869-06-01), Rumsey et al.
patent: 333392 (1885-12-01), Casgrain
patent: 551989 (1895-12-01), Munro
patent: 607577 (1898-07-01), Tipton
patent: 911971 (1909-02-01), Gilbreth
patent: 1062363 (1913-04-01), Schalscha
patent: 1622896 (1927-03-01), Lowenstein
patent: 3001515 (1961-09-01), Haage
patent: 3086600 (1963-04-01), Kerley, Jr.
patent: 3509948 (1970-04-01), Besnard
patent: 4257488 (1981-03-01), Schnell

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