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US Patent: 86,724
Improvement in Screw Driver Handles
Patentee:
Eli S. Bitner - Lock Haven, PA

USPTO Classifications:
81/492

Tool Categories:
screwdrivers : screwdriver handles

Assignees:
None

Manufacturer:
Henry Disston & Sons - Philadelphia, PA

Witnesses:
T. C. Kintzing
Edw'd P. McCormick

Patent Dates:
Granted: Feb. 09, 1869

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Henry Disston & Sons
Description:
A smooth metal cap fits loosely in a socket in the top of the screwdriver to eliminate friction to the palm when driving screws.

Sold by Disston and Sons in the 1876 Price List.

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