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US Patent: 1,950,675
Friction gear for stepless changing the rotation of a driven shaft
Patentee:
David Hans Heynau (exact or similar names) - Cologne-on-the-Rhine, Germany

USPTO Classifications:
474/29, 476/53

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

Assignees:
None

Manufacturer:
Master Electric Co. - Dayton, OH

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 15, 1931
Granted: Mar. 13, 1934

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Master Electric Co.
Description:
This patent number was seen on a "Speed Ranger" variable speed motor unit from Master Electric Co., along with patents 2,032,015 and 2,199,491.

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