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US Patent: 638,359
Variable Speed Mechanism
Patentee:
William L. Schellenbach - Philadelphia, PA

USPTO Classifications:
74/356

Tool Categories:
metalworking machines : metal lathes

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
John A. Wiedersheim
William C. Wiedersheim
L. Bouville
P. F. Hagle

Patent Dates:
Applied: May 02, 1899
Granted: Dec. 05, 1899

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for John B. Morris Machine Tool Co.
Description:
Wiedersheim & Fairbanks - patent attorneys

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