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US Patent: 404,567
System of generators for alternating electric currents
Patentee:
Oliver B. Shallenberger (exact or similar names) - Rochester, PA

USPTO Classifications:
307/13, 307/19, 307/84, 318/42

Tool Categories:
electrical devices : electric distribution systems

Assignees:
Westinghouse Electric Co. - Pittsburgh, PA

Manufacturer:
Not known to have been produced

Witnesses:
Charles A. Terry
C. C. Wolfe

Patent Dates:
Applied: Sep. 08, 1888
Granted: Jun. 04, 1889

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Westinghouse Electric & Mfg. Co.
Description:
This patent relates to two-phase distribution systems which Westinghouse was researching at the time. Inventor Shallenberger had developed a power usage meter device that was considered by George Westinghouse to be a key component of their electrical distribution system offering; it worked at 133 Hertz which would prove to be an obstacle to the development of a viable polyphase alternate-current distribution system.

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