Grab suspended from a hoist

Details Grab suspended from a hoist Grab suspended from a hoist

B - Operations, Transporting

66

C

294/19, 364/23

B66C 1/28 (2006.01) B66C 3/16 (2006.01) B66C 13/32 (2006.01)

Patent

CA 1142979

ABSTRACT A grab suspended from a hoist and adapted to be raised and lowered by a hoist motor is provided with swit- ching means for the hoist motor and a grab motor. In the working position a slack-cable switch switches off the lowering movement of the hoist motor, a closing contactor switches on the grab motor in the direction of closing, and a closing time-relay and a hoisting time-relay are energized. A hoisting contactor responsive to the closing contactor switches on the lifting movement of the hoist motor in order to free and raise the grab.

364427

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