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US Patent: 976,131
Chain Breast Ratchet Drill
Patentee:
Stephen McClellan - Brooklyn, NY

USPTO Classifications:
408/92, 74/417

Tool Categories:
woodworking tools : hand drills : drill accessories
woodworking tools : hand drills : breast drills

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
R. P. Duffie
Ruth M. Duffie

Patent Dates:
Applied: Dec. 24, 1908
Granted: Nov. 15, 1910

Patent Pictures:
USPTO pdf tiff
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Description:
McClellan references his earlier patents: 661,416and 714939. This is a refinement that he claims that can be made 1/3 cheaper as well as the capability to drill into corners.

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