US Patent: 486,395 - Screw Driver


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US Patent: 486,395

Screw Driver

Patentee:

William M. Carr (exact or similar names) - 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:

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

Patent Pictures:

William M. Carr patent November 15, 1892

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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.