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Port Clinton, and Lakeside Railway Co., (3 folders, ca. 1890)

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A detailed electrical schematic blueprint illustrating the circuits formed when used for control of two motors. The diagram includes labeled sections for various motor control positions, with components such as transition positions, field coils, and series-parallel connections. The circuits are drawn in a structured sequence, showing different operational states. This document was likely used in patent litigation to demonstrate the design and function of the Bullock Electric Manufacturing Company’s Type 450A Controller.
Port Clinton, and Lakeside Railway Co., (3 folders, ca. 1890) picture number 1

This document is part of a legal exhibit in the case Stanley Electric Manufacturing Company vs. Toledo Port Clinton & Lakeside Railway Company, related to Henry Patent No. 705,241. The exhibit is labeled as Broadhurst Exhibit No. 6 and presents a technical schematic related to electric motor control systems. As a mechanical draftsman and patents expert, Lewis Latimer worked for the Edison Company on complex lawsuits in which different companies challenged each other over patent infringement. He may also have done some of this work on a freelance basis for other clients.

Latimer Family Papers (1870-1996 ) [QPL Full Collection]

Bullock Electric Manufacturing Company’s Series Parallel Controller Type 450A

Queens Borough Public Library

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