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US Patent: 486,395
Screw Driver
Patentee:
William M. Carr - Tyrone, KY

USPTO Classifications:
81/451

Tool Categories:
screwdrivers : screwdriver mechanisms

Assignees:
William M. Carr - Tyrone, KY
Edmund S. Slaughter - Tyrone, KY

Manufacturer:
Not known to have been produced

Witnesses:
C. S. Frye
Thomas E. Turpin
W. H. McKee
J. S. Odeel

Patent Dates:
Applied: Apr. 20, 1892
Granted: Nov. 15, 1892

Patent Pictures:
William M. Carr patent November 15, 1892
USPTO pdf tiff
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Description:
A rubber lined, spring loaded sleeve is intended to keep the screwdriver blade aligned with the slot in the screw head. The drawing shows a screwdriver adapted for use in a brace; the patent could also apply to a screwdriver with its own handle.

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