US Patent: 902,387
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Detachable-blade screw-driver
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Patentee:
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Thomas J. Fegley (exact or similar names) - Philadelphia, PA |
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Patent Dates:
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Applied: |
Aug. 03, 1907 |
Granted: |
Oct. 27, 1908 |
Patent Pictures:
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Steve Gosselin "Vintage Machinery" entry for North Bros. Manufacturing Co.
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Description: |
An improvement on Selden North's Patent 842107.By adding a spring in the blade track of the handle , the replaceable blade is held securely in place,Norths approach to the problem was to slightly bend the prongs of the replaceable blade, thus keeping it in place by friction.Sample marked ,'North Brothers MFG.Co. PHILA. PA. U.S.A. PAT.NOV.2,97-JAN.27,01 PAT.JAN.22,1907.
See Patents 858131 and 842107 for further information on this tool. |
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