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US Patent: 2,664,126
Ratchet spiral screw driver
Patentees:
Judson H. Mansfield - Rockford, IL
Edwin C. Swanson - Rockford, IL

USPTO Classifications:
74/127

Tool Categories:
screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:
Greenlee Brothers & Co. - Rockford, IL

Manufacturer:
Greenlee Brothers & Co. - Rockford, IL

Witnesses:
Unknown

Patent Dates:
Applied: May 15, 1950
Granted: Dec. 29, 1953

Patent Pictures: [ 1 | 2 | 3 | 4 ]
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Description:
This is an improvement to Patent 1971289.The main claim of this Patent is to encase the ratchet mechanism, for the protection of the workman, Their work piece and the tool. Sold as the Greenlee #451,example marked Pat Pending, made with stainless steel and a clear green plastic handle.

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