Elevator hoistway door bolt lock

An elevator hoistway door lock comprising:

• a lip disposed on a hoistway door header in the vicinity of a hoistway door at an elevator landing doorway with the hoistway door being movable between an open position and a closed position;
• a rod journaled for rotation in a pillow block on the hoistway door in the vicinity of said lip;
• a pin extending laterally outward from said rod in a position so as to be able to engage said lip when said hoistway door is in the closed position and thereby prevent the said hoistway door from moving toward the open position;
• and
• a cam follower fastened to said rod and movable between a first position in which said rod is rotated to a locked position in which said pin engages said lip and an unlocked position in which said pin clears said lip so that said hoistway door may be moved toward an open position, said cam follower being disposed in a position adjacent to the position at which a retiring cam of an elevator car will appear when the elevator car is within a landing zone of a landing to which said hoistway door corresponds, whereby, when an elevator car is within the landing zone of the related landing, the retiring cam may actuate said cam follower to rotate said rod into said unlocked position.

An elevator hoistway door lock comprising:

• a lip disposed on a hoistway door header in the vicinity of a hoistway door at an elevator landing doorway with the hoistway door being movable between an open position and a closed position;
• a rod journaled for rotation on the hoistway door in the vicinity of said lip;
• a pin extending laterally outward from said rod in a position so as to be able to engage said lip when said hoistway door is in the closed position and thereby prevent the said hoistway door from moving toward the open position;
• a cam follower fastened to said rod and movable between a first position in which said rod is rotated to a locked position in which said pin engages said lip and an unlocked position in which said pin clears said lip so that said hoistway door may be moved toward an open position, said cam follower being disposed in a position adjacent to the position at which a retiring cam of an elevator car will appear when the elevator car is within a landing zone of a landing to which said hoistway door corresponds, whereby, when an elevator car is within the landing zone of the related landing, the retiring cam may actuate said cam follower to rotate said rod into said unlocked position;
• a pair of electrical safety contacts displaced longitudinally of each other adjacent to said rod;
• and
• a rotating electrical contact extending outwardly from the periphery of said rod and having a limited arcuate extent, said contact disposed on the periphery of said rod so that when said rod is rotated into the locked position with said pin engaging said lip said rotating contact will electrically interconnect said electrical safety contacts, said rotating electrical contact being of limited arcuate extent so that when said rod is rotated into said unlocked position with said pin clearing said lip, said electrical safety contacts are not interconnected by said rotating electrical contact.