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US Patent: 144,499
Devices for Changing the Speed of Machinery
Patentee:
Alfred Betts - Wilmington, DE

USPTO Classifications:
122/155.3, 475/320

Tool Categories:

Assignees:
E. & A. Betts - Wilmington, DE

Manufacturer:
Not known to have been produced

Witnesses:
E. L. Ouville
William Betts
G. Mathys
Solon O. Kernan

Patent Dates:
Applied: Oct. 23, 1873
Granted: Nov. 11, 1873

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Betts Machine Co.

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