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US Patent: 89,461
Improvement in Pawl-Wrenches and Braces
George W. Bishop - Stamford, CT

USPTO Classifications:
81/30, 81/58.5

Tool Categories:
wrenches : ratchet wrenches
woodworking tools : braces : ratchet braces

New England Manufacturing Works Co. - Stamford, CT

New England Manufacturing Works & Co. - Stamford, CT

Robert Fairchild
Alvin Walker

Patent Dates:
Granted: Apr. 27, 1869

Patent Pictures:
George W. Bishop Pat. April 27, 1869
USPTO pdf tiff
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"Vintage Machinery" entry for New England Manufacturing Works & Co.
A cam-faced lever bears on the outside of a drill chuck or wrench socket. Neither the cam face or exterior of the chuck / socket have teeth. A stop pin limits "lost motion" of the lever.

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