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US Patent: 247,669
Screwdriver
Patentees:
Charles H. Mallett - Augusta, ME
Zachary T. Furbish - Augusta, ME

USPTO Classifications:
192/44, 81/33

Tool Categories:
screwdrivers : screwdriver mechanisms : ratcheting screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Geo. W. Martin
Joseph E. Badger

Patent Dates:
Applied: Aug. 05, 1881
Granted: Sep. 27, 1881

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
Double locking feature between the handle and the tool with simplified construction.

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