Abstract: Opening of an elevator door by occupants of a car which is stalled between building floors is prevented by a locking member which is movable by an electrical actuator between a door locking position and a door releasing position. Opening is permitted at unlocking zones at which the car is at or close to a landing site at a building floor. An infrared emitter and an infrared detector carried by the car pass along opposite sides of a series of opaque door zone vanes situated along the path of car travel. The actuator retracts the locking member in response to blocking of the infrared path between the emitter and detector by a door zone vane. A timer delays the retraction for a period at least equal to the time required for passage of the car through an unlocking zone when it is traveling at rated speed past a floor at which it is not to be stopped.

Abstract: A wire rope cleaning brush assembly designed to clean elevator and hoist wire rope and cable includes a U-shaped frame having opposed legs, each leg configured to support a generally rectangular rope cleaning brush. The brushes are disposed with their bristle tips converging at a nominal plane, and the wire ropes and cable translate in the nominal plane to be cleaned by the bristles as the wire rope is moved past the brushes by actuation of the elevator hoist. A pair of cap plates are removably secured to the U-shaped frame, each plate securing one of the brushes. The plates and the frame include holding pins extending toward the brushes to retain the brushes fixedly in the U-shaped frame. The confronting bristle tips impinge on the moving wire rope, and apply sufficient force to remove dirt and corrosion from the valleys as well as the crowns of the wire braids and strands.