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US Patent: 248,587
Device for Throwing Belts Onto or Off From Revolving Pulleys
Patentee:
William Gray - Hartford, Hartford County, CT

USPTO Classifications:
474/130

Tool Categories:
specialty tools : belt shifters

Assignees:
William Gray - Hartford, Hartford County, CT
Amos Whitney - Hartford, Hartford County, CT

Manufacturer:
Pratt & Whitney Co. - Hartford, Hartford County, CT

Witnesses:
Theodore G. Ellis
W. Marsh
Charles L. Burdett
Erwin F. Dimock

Patent Dates:
Applied: Aug. 31, 1881
Granted: Oct. 25, 1881

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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"Vintage Machinery" entry for Pratt, Whitney & Co.

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