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US Patent: 260,135
Screw-Driver
Patentee:
James Swan - Seymour, CT

USPTO Classifications:
279/102

Tool Categories:
screwdrivers : screwdriver handles

Assignees:
None

Manufacturer:
James Swan Co. - Seymour, CT

Witnesses:
G. W. Gregory
Bernice J. Noyes

Patent Dates:
Applied: Apr. 03, 1882
Granted: Jun. 27, 1882

Patent Pictures:
USPTO pdf tiff
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Description:
This is an attempt to overcome the propensity of round-shank screwdrivers to twist loose under torque or split the handle if flattened and compressed in it. A threaded socketed metal receiver is installed in the thickest part of the handle, for strength, and the shaft is installed up through a somewhat loose fitting hole into the socket. It is interchangeable with other bits.

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