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US Patent: 871,904
Shaft-oscillator
Patentee:
Edwin C. Wright (exact or similar names) - Newport, KY

USPTO Classifications:
310/229

Tool Categories:
electrical devices : electric motors

Assignees:
Allis-Chalmers Co. - Milwaukee, WI
Bullock Electric Mfg. Co. - Norwood, OH

Manufacturer:
Allis-Chalmers Co. - Milwaukee, WI

Witnesses:
George B. Schley
Fred J. Kinsey

Patent Dates:
Applied: Apr. 20, 1907
Granted: Nov. 26, 1907

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Allis-Chalmers Mfg. Co.
Vintage Machinery entry for Bullock Electric Mfg. Co.
Description:
"My invention relates to shaft oscillators or end-play devices. It is particularly adapted for use in connection with dynamo-electric machines for the purpose of preventing grooving and roughening of the commutator."

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