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US Patent: 196,354
Improvement in Combined File and Screwdriver
Patentee:
Samuel Harris - Boston, MA

USPTO Classifications:
279/76, 30/162, 7/165, 7/167

Tool Categories:
combination tools
metalworking tools : files
screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry W. Williams
B. W. Williams

Patent Dates:
Applied: Apr. 30, 1877
Granted: Oct. 23, 1877

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
File on one end and a screwdriver blade on the second. A pin with a spring locks the selected tool in position by engaging the appropriate hole on the on the blade when the desired tool is slid into position.

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