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US Patent: 881,086
Variable-speed mechanism
Patentee:
Burt D. Stevens - Beloit, WI

USPTO Classifications:
474/75

Tool Categories:
industrial machines : industrial machine mechanisms : industrial machine speed changing mechanisms

Assignees:
None

Manufacturer:
P. B. Yates Machine Co. - Beloit, WI
Berlin Machine Works - Beloit, WI

Witnesses:
L. F. McCrea
Walter M. Fuller

Patent Dates:
Applied: Sep. 24, 1906
Granted: Mar. 03, 1908

Patent Pictures:
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"Vintage Machinery" entry for P. B. Yates Machine Co.
"Vintage Machinery" entry for Berlin Machine Works
Description:
"My invention relates to variable speed mechanisms and belt tighteners, its object being the production of a simple belt-tightening means acting on a plurality of belts passing over pulleys of different diameters whereby a variety of speeds of the driven mechanism may be secured."

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