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US Patent: 174,142
Improvement in Nut-Crackers
Charles B. Martin - Southington, CT

USPTO Classifications:
100/233, 100/292, 30/120.4, 81/129.5, 81/384, 81/391, 99/573

Tool Categories:
household tools : nutcrackers


Not known to have been produced

John D. Ballou
Edwin W. Richards
J. H. Shumway
Clara Broughton

Patent Dates:
Applied: Jan. 24, 1876
Granted: Feb. 29, 1876

Patent Pictures:
Charles B. Martin patent Feb. 29, 1876
USPTO pdf tiff
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The "anvil" jaw adjusts, with rack teeth and a bolt with wing nut to set the position. The movable jaw pivots, with a spring to hold it open, and a lever handle which closes the jaw by cam action. The specifications note and disclaim any features common with patent no. 24,238.

This patent is referred to in pat. no. 2,905,038 (Sept. 22, 1959).

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