US Patent: 348,765 - Screw and Drill Tool


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US Patent: 348,765

Screw and Drill Tool

Patentee:

Oliver L. Neal (exact or similar names) - Waltham, MA

USPTO Classifications:

279/83, 30/164.9, 81/177.3, 81/436, D8/82

Tool Categories:

screwdrivers

Assignees:

None

Manufacturer:

Unknown

Witnesses:

Albert Brown

Kate E. Bellows

Patent Dates:
Applied:	Apr. 26, 1886
Granted:	Sep. 07, 1886

Patent Pictures:

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Description:

This is a clever jeweler's screwdriver or pin drill that adds some additional gearing to allow a single twist of the shank to turn into multiple turns of the drill bit.