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US Patent: 638,359
Variable Speed Mechanism
Patentee: William L. Schellenbach (exact or similar names) - Philadelphia, PA USPTO Classifications: 74/356 Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking variable speed mechanisms 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 (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for John B. Morris Machine Tool Co.
Description: Wiedersheim & Fairbanks - patent attorneys

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