Demountable gantry, boom hoist and counterweight

Details Demountable gantry, boom hoist and counterweight Demountable gantry, boom hoist and counterweight

1976-10-26

1978-03-28

Oresky, Lawrence J.

Traversing hoists

Overhead

Cable

212 59R, B66C 2372

Patent

active

040810810

ABSTRACT:
The back hitch assembly for a lift crane includes hydraulic cylinders for raising the pivotally mounted gantry members and masts. Counterweight lift links are connected between the gantry and the counterweight and the back hitch cylinders may be used to mount and demount the counterweight and the boom hoist winch. The masts, gantry members and back hitch cylinders may be folded back over the bed of the crane for low profile transport or they may be demounted to further reduce weight.

REFERENCES:
patent: 3204793 (1965-09-01), Lane
patent: 3278045 (1966-10-01), Potter
patent: 3891095 (1975-06-01), Symmank

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