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US Patent: 518,472
Screw Driver
Patentee:
Samuel Idell Snyder (exact or similar names) - Clearfield, PA

USPTO Classifications:
81/448

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. Wade Snyder
Karl Irwin
J. B. Owens
W. F. Doyle
Patent Dates:
Applied: Feb. 10, 1894
Granted: Apr. 17, 1894

Patent Pictures:
Samuel Idell Snyder patent April 17, 1894
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Description:
The blade tip has a parallel spring leaf to keep the screwdriver firmly tight in the slot in the head of the screw.

Improved by January 22, 1895 patent no. 532,830.

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