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US Patent: 513,931
Jewel Chuck
Patentee: John L. Hutchinson (exact or similar names) - La Porte, La Porte County, IN USPTO Classifications: 279/51 Tool Categories: metalworking machines : metal lathes : metal lathe chucks metalworking machines : metal lathes : watchmakers lathes trade specific : watchmaker Assignees: None Manufacturer: Unknown Witnesses: H. C. Shannon W. C. Armers	Patent Dates: Applied: Mar. 17, 1893 Granted: Jan. 30, 1894 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin
Description: Sample, 6 jewel chucks in wooden case all marked ,'Pat. Jan. 30,94.'

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