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US Patent: 632,560
Chuck Tool-Stock Chuck
Patentee: Zachry T. Furbish (exact or similar names) - Philadelphia, PA USPTO Classifications: 279/82 Tool Categories: industrial tools : tool holders woodworking tools : hand drills : drill chucks Assignees: North Brothers Manufacturing Co. - Philadelphia, PA Manufacturer: North Brothers Manufacturing Co. - Philadelphia, PA Witnesses: Will. A. Barr Jos. H. Klein	Patent Dates: Applied: Jun. 14, 1898 Granted: Sep. 05, 1899 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin "Vintage Machinery" entry for North Brothers Manufacturing Co
Description: Used on many North Brothers spiral ratcheting screwdrivers. Samples seen with an erroneous September 15th date.

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