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US Patent: 666,507
Chuck Drill bit, &c., Chuck
Patentee: Zachry T. Furbish (exact or similar names) - Philadelphia, PA USPTO Classifications: 279/81 Tool Categories: 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. 15, 1898 Granted: Jan. 22, 1901 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin "Vintage Machinery" entry for North Brothers Manufacturing Co
Description: Early chuck used on #40, #41, #42, and 45. Operated by twisting the chuck collar a 1/4 turn to insert or remove bits.

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