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US Patent: 872,641
Shaft-oscillator
Patentee:
Will F. Bouché (exact or similar names) - Norwood, OH

USPTO Classifications:
74/22R

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:
Ruby Robinson
Fred J. Kinsey

Patent Dates:
Applied: Aug. 31, 1906
Granted: Dec. 03, 1907

Patent Pictures:
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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:
"An oscillating movement given to a rotating element of a dynamo-electric machine, especially a rotary converter, causes the shaft of said element to operate in its bearings and prevents the wearing of the ridges and grooves in the commutator of the machine."

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