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US Patent: 115,582
Improvement in Screwdrivers
Patentee:
Jonas P. Curtiss - New Britain, CT

USPTO Classifications:
279/105

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
None

Manufacturer:
The Stanley Rule & Level Co. - New Britain, CT

Witnesses:
James Shepard
S. W. Valentine

Patent Dates:
Granted: Jun. 06, 1871

Patent Pictures:
USPTO pdf tiff
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Description:
Blade is made with a notch on its tang and the blade secured to the handle by pouring molten lead or other suitable metal into a transverse hole in the handle.

Known examples are marked Stanley R & L Co. with the patent date.

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