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OTIS ELEVATOR CO. v. ATLANTIC ELEVATOR CO.

No. 207.

47 F.2d 545 (1931)

OTIS ELEVATOR CO. v. ATLANTIC ELEVATOR CO., Inc. (WESTINGHOUSE ELECTRIC & MANUFACTURING CO., Intervener).

Circuit Court of Appeals, Second Circuit.

February 2, 1931.

Attorney(s) appearing for the Case

Edwin W. Sims, of Chicago, Ill. and Harry E. Knight, of Washington, D. C. (Wallace R. Lane, and Clarence J. Loftus, both of Chicago, Ill., of counsel), for plaintiff.

Drury W. Cooper, of New York City, Wesley G. Carr, of East Pittsburgh, Pa., and Victor S. Beam, of New York City, for defendants.

Before L. HAND, SWAN, and CHASE, Circuit Judges.

L. HAND, Circuit Judge.

The patent is for a device to bring electric elevators to a stop at the exact level of the floor. It applies primarily to elevators operated on the so-called Leonard system, which all the claims include as an element. This has a cage operated by an electric motor, which coils and uncoils the sustaining cables upon a sheave; the motor being driven by a generator of the usual type. The peculiarity of the Leonard system is that the field winding...

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