Grab excavator with fixed jib

Details Grab excavator with fixed jib Grab excavator with fixed jib

1979-01-24

1980-08-12

Purser, Ernest R.

Mining or in situ disintegration of hard material

With separation of materials

Material mined or excavated underwater

37 71, 414143, 414139, E02F 344, E02F 706

Patent

active

042169976

ABSTRACT:
A grab excavator of the kind having a fixed jib, a liftable grab supported by the jib and a chute articulated about a horizontal axis for pivoting between an operative position in which the chute is directed obliquely downwards to receive material released from the grab and an inoperative position in which the chute is positioned downwardly out of the path of the grab. When the chute is in its operative position the lower end communicates with a feed device which includes a sieve forming a downward extension from the lower end of the chute. The chute is pivoted into and out of its operative position by a hydraulic ram engaging the underside of the chute.

REFERENCES:
patent: 1396193 (1921-11-01), Godin
patent: 2265570 (1941-12-01), Nicol
patent: 3704796 (1972-12-01), Dedons et al.

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