Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 733
ent, securely locking the car until the motor is againstarted. The Engine shall have a top-and-bottom-Hmit-switch device, operated by the drum shaft, which shall open firstthe control circuit and then the armature circuit, whenever the car has reached either limit of travel. Whenevereither… … TYPE A TANDEM SPIRAL GEAR ELEVATOR The Engine shall have a centrifugal speed-governor, driven by the armature shaft, arranged to stop the motorshould its speed increase 10% above normal. ContmucJ on Xrxt PJge ELEVATORS. ETC. 663 MARINE ENGINE AND MACHINE CO. CONTROL. CAR FRAMEAND PLATFORM. CAR…
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