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US Patent: 810,230
Bit-Extender
Patentee:
William B. Swan - Seymour, CT

USPTO Classifications:
279/78, 403/327, 403/334, 81/28

Tool Categories:
woodworking tools : hand drills : drill bit extensions

Assignees:
None

Manufacturer:
James Swan Co. - Seymour, CT

Witnesses:
Frederick N. Earley
L. C. Lattrich

Patent Dates:
Applied: Aug. 18, 1905
Granted: Jan. 16, 1906

Patent Pictures:
USPTO pdf tiff
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Description:
Though Swan references his earlier bit-extender 759042, this patent differs by replacing a toothed lever with a spring-loaded catch which is pressed firmly into contact with the notched tang of the bit by turning a threaded sleeve down on the head of the device. This bit-extender was being offered by the James Swan Company at least as late as 1920.

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