In factory buildings erected before or after October 1, 1913; in mercantile establishments in buildings erected before or after November 1, 1920.
Every direct connected electric elevator hereafter installed shall be equipped with an electro-mechanical machine brake, which shall be electrically released and mechanically applied and which shall bring the car to a stop when any of the electric attachments function for safety or when the operating device is brought to the stop position.
N.Y. Comp. Codes R. & Regs. Tit. 12 § 8-1.30