Abstract: A center opening, linkage driven elevator door system comprises: a single door lock; an air cord; a first hoistway door attached to the air cord; a second hoistway door having a stop in register with the air cord, the second hoistway door being locked by said lock; an abutment attaching to the air cord, the abutment contacting the stop attached to the second hoistway door when the first and second hoistway doors are closed such that the first hoistway door cannot move when the second hoistway door is locked, the abutment not contacting the stop during the opening of the doors due to the different relative speeds of the first and second hoistway doors.

Abstract: A linkage is provided for joining a car door to a hoistway door, the linkage having a lever attached about a middle portion thereof to one of the car or hoistway doors, the lever having a roller disposed at an end portion thereof for fixedly engaging the other of the car or hoistway doors, the lever cooperating with a linkage connected to the door operating unit to allow the rollers to engage the other of the car or hoistway doors without moving the other of the car or hoistway doors. A latch cooperates with a linkage connected to the door operating unit to allow the car doors to close without disengaging the rollers from the vane and for allowing the rollers to disengage the vane after the doors are closed.

Abstract: The guide rail is one which is adapted to be mounted on a glass balustrade on an escalator. The mounting is accomplished without the need to drill holes in the balustrade or to apply any adhesive to the balustrade. The guide is formed with a groove in its lower surface which receives the top edge of the balustrade. The groove is flanked by gripping legs, one of which can be tightened against the balustrade by means of set screws, in the manner of a vise. The set screws are threaded into a handrail slide portion of the guide and are completely recessed therein so as not to interfere with the handrail.