Machine for excavating work

Details Machine for excavating work Machine for excavating work

1985-04-12

1987-03-17

Valenza, Joseph E.

Material or article handling

Vertically swinging load support

Shovel or fork type

414706, E02F 332

Patent

active

046503935

ABSTRACT:
A machine for excavating work such as an oil-pressure shovel comprising a boom, an arm, and bucket. The turning shaft for an arm turning device provided on the arm is made capable of turning in the vertical plane including the boom, and this turning shaft is equipped with a turn control device effective for keeping the turning shaft vertical irrespective of the vertical movement of the boom.

REFERENCES:
patent: 3149737 (1964-09-01), Guinot
patent: 3283928 (1966-11-01), Bosredon
patent: 3313431 (1967-04-01), Kelly
patent: 3515298 (1970-06-01), Guinot
patent: 3669286 (1972-06-01), Gauchet

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