B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
294/4
B66C 1/48 (2006.01) B25J 15/00 (2006.01)
Patent
CA 1153784
MOTORIZED LEVER-ACTION VERTICAL AXIS COIL GRAB ABSTRACT OF THE DISCLOSURE A motorized lever-action vertical axis coil grab manipulated in suspended disposition from an overhead crane by a single operator from a remote control location for clampably engaging for lifting and displacement from one location to another upright standing wrapped metal material coils of various size and dimension, with initial grab engagement of any particular coil to be moved by a motor- driven compressive clamping of the coil overply wall thick- ness to remove therefrom any wrap slack sponginess prep- atory to tong latch release of the grab lever-acting self- gripping force translating tong linkage assembly such that no extension of the tong linkage assembly thereof will be wasted in taking up coil wrap slack but rather be substan- tially translated as increasing clamp compression on the coil wall thickness in a gripping force transmission suf- ficient to lift the coil without the convoluted laminate wrap structure thereof slipping apart upon coil elevation for movement, wherein the grab hereof further embodies a a feature thereof a tong latch load sensing switch assembly automatically operable to cut crane hoist motor power in an event where the tong latch does not properly cycle and release the lever-acting tong linkage assembly to effect a self-gripping force translation upon grab elevation of the motor-driven compressively clamped coil.
372070
Bradley Lifting Corp.
Hewitt Neville S.
LandOfFree
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