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US Patent: 842,107
Removable-Blade Screw-Driver
Patentee:
Selden G. North (exact or similar names) - Philadelphia, PA

USPTO Classifications:
81/438

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
North Brothers Manufacturing Co. - Philadelphia, PA

Manufacturer:
North Brothers Manufacturing Co. - Philadelphia, PA

Witnesses:
Will A. Barr
Joseph H. Klein

Patent Dates:
Applied: Jan. 08, 1906
Granted: Jan. 22, 1907

Patent Pictures: [ 1 | 2 | 3 | 4 ]
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"Vintage Machinery" entry for North Bros. Manufacturing Co.
Description:
The invention is for a replaceable blade screwdriver with blade storage in the handle. The blade storage is mentioned in the Patent but is covered by a different Patent Interestingly the Patent for the blade storage 858131 by Henry J. Aichele was filled on the same date as North's Patent but wasn't granted till six months later.Sold by North Brothers as the #65, came with 4 removable bits and storage in the handle.Sample marked ,'North Brothers MFG.Co. PHILA. PA. U.S.A. PAT.NOV.2,97-JAN.27,01 PAT.JAN.22,1907. The 1897 Patent593157 and the 1901 Patent 666507 both by Zachery Furbish.

See Patents 858131 and 902387 for further information on this tool.

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