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US Patent: 759,042
Bit-Extender
Patentee:
William B. Swan - Seymour, CT

USPTO Classifications:
279/78, 81/177.85

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

Assignees:
None

Manufacturer:
James Swan Co. - Seymour, CT

Witnesses:
George A. Divine
Cornelius A. Hammond

Patent Dates:
Applied: Jan. 02, 1904
Granted: May 03, 1904

Patent Pictures:
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Description:
Bits are held in this extension by a toothed lever which engages a corresponding notch in the tang of the bit. The lever is forced into firm contact with the notch by a beveled surface on a threaded nut as it is tightened down against the head of the bit extension. This bit-extension appears in The James Swan Company's 1904 catalogue.

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