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US Patent: 659,521
Ratchet mechanism
Patentee: Zachry T. Furbish (exact or similar names) - Philadelphia, PA USPTO Classifications: 74/127 Tool Categories: screwdrivers : screwdriver mechanisms : spiral screwdrivers Assignees: North Brothers Manufacturing Co. - Philadelphia, PA Manufacturer: North Brothers Manufacturing Co. - Philadelphia, PA Witnesses: William A. Barr Joseph H. Klein	Patent Dates: Applied: Jun. 14, 1898 Granted: Oct. 09, 1900 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: Another improvement to the Yankee Ratchet mechanism used on the 30,130,31,131 etc.

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