Boom point assembly for an excavating machine

Details Boom point assembly for an excavating machine Boom point assembly for an excavating machine

1974-08-08

1976-06-01

Crowder, Clifford D.

Excavating

Snow or ice removing or grooming by portable device

Railway clearer

37135, 254190R, 308 18, E02F 348

Patent

active

039598993

ABSTRACT:
A boom point assembly is provided with a sheave or sheaves that are swivel mounted to allow the sheaves and the cables supported thereby to swing sidewise relative to the centerline of the boom without applying substantial twisting forces on the boom and without causing undue wear on the sheaves or on the cables. The cross-shaft or pin for supporting the sheave or sheaves is mounted in the side cheeks of the boom point assembly with the axial thrust from the sheave bearings and mount being transverse to the cross-shaft or pin and being transmitted through a support pylon to the chords of the boom frame.

REFERENCES:
patent: 1836281 (1931-12-01), Russell
patent: 2020073 (1935-11-01), McCullough
patent: 2042460 (1936-06-01), Fykse
patent: 2279887 (1942-04-01), Hathorn
patent: 2802639 (1957-08-01), Troyer
patent: 2947516 (1960-08-01), Jackson
patent: 3171633 (1965-03-01), LeBus, Jr. et al.
patent: 3684245 (1972-08-01), Maricher et al.
patent: 3757959 (1973-09-01), Thompson et al.

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