Improvements in safety-suspending-apparatus for mine cages and lifts

摘要

217,948. Webb, S., and Guest, H. C. Jan. 29, 1923. Catch gear of mine-cage type.-When the hoisting rope breaks the spring h pulls down the rod f and the lever e is rocked to force the wedge c between the inclined inner surface b3 of the casing b and the guided. A spring i of greater strength than the spring h is placed between the lever and the ring g1 of the bridle chains to delay the release of the gripping device until the weight of the cage has been taken by the bridle chains after a new winding rope has been connected. Spring tension is adjusted by a screw j. The lever c is pivotally mounted on the casing band its ends are slotted to receive studs projecting from the wedge c and passing through slots in the casing. The guide-engaging face of the wedge is concave and has downwardly inclined teeth.