N.Y. Multiple Residence Law § 131: Shafts, elevators and dumbwaiters

§ 131. Shafts, elevators and dumbwaiters. Every shaft shall be

enclosed on all sides with fireproof walls and shall have fireproof

doors and assemblies at all openings, with the doors self-closing. Not

more than three elevators or dumbwaiters shall ever be placed in the

same shaft. All dumbwaiter doors shall be fastened by an interior lock

in the shaft operated and controlled from a central point. The doors of

every elevator shaft shall be provided with an automatic device to

prevent the normal operation of the elevator unless the hoistway door at

which the car is standing is closed and locked, or unless all hoistway

doors are locked in a closed position. Such doors, except for

power-operated sliding doors, shall have a vision panel of wire glass

not exceeding one square foot in area. Every elevator shall be equipped

with a gate or door with an automatic device to prevent the normal

operation of such elevator unless such gate or door is closed.