Dump block

Details Dump block Dump block

1997-07-25

1999-10-26

Will, Thomas B.

Excavating

Cable-operated

Boom-type

37395, 37397, 37398, 37399, 37401, 294 6827, E02F 348, E02F 358, E02F 360, B61C 300

Patent

active

059706368

ABSTRACT:
An integral dump block for use in a dragline bucket that comprises a sheave to movably support a dump line, a central pin rotatably supporting the sheave, and a housing to couple the pin to lift lines. Bearings are disposed within the sheave and each side of the housing for receiving the pin for free rotation. Hoist lines for supporting a dragline bucket are connected to each end of the pin. In this way, moment forces in the hoisting assembly can be substantially eliminated. Further, a number of parts can be eliminated to provide a reduction in weight and height of the hoisting linkage assembly.

REFERENCES:
patent: 1695480 (1928-12-01), Buoy
patent: 2024557 (1935-12-01), White
patent: 2168643 (1939-08-01), Berner
patent: 2629190 (1953-02-01), Berner
patent: 2633649 (1953-04-01), Page
patent: 3014683 (1961-12-01), Littmann
patent: 3597865 (1971-08-01), Rumfelt
patent: 4074519 (1978-02-01), Barrett
patent: 4740023 (1988-04-01), Miller
patent: 4958796 (1990-09-01), Bermosky
patent: 5307571 (1994-05-01), Behlendorf et al.
patent: 5321902 (1994-06-01), Gregory
patent: 5636460 (1997-06-01), Dretzka

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