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US Patent: 301,915
Screw-driver
Patentee:
Christopher H. Olson - Decatur, IL

USPTO Classifications:
74/127

Tool Categories:
screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
P. D. Walker
C. H. Walters

Patent Dates:
Applied: Feb. 01, 1884
Granted: Jul. 15, 1884

Patent Pictures: [ 1 | 2 ]
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Description:
Information taken from Clifford D. Fales' database.

One of four spiral screwdriver patents by same patentee as the commonly observed DECATUR COFFIN CO. screwdriver; see patent 306,096. Earliest patent for a bi-directional spiral screwdriver.

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