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US Patent: 107,425
Improvement in Wrenches
Henry Tregallas - Calumet, MI

USPTO Classifications:
81/147, 81/180.1, 81/184

Tool Categories:
wrenches : pipe and nut combination wrenches
wrenches : wrench adjustment types : quick adjust wrenches


Not known to have been produced

Chas. Kenyon
Edwd. P. Masi
Francis Ward
Josiah Tregallas

Patent Dates:
Granted: Sep. 13, 1870

Patent Pictures:
Henry Tregallas Pat. Sept. 13, 1870
USPTO pdf tiff
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The handle tapers so the "fixed" jaw and movable jaw can be slid off. There are interchangeable smooth face (nut) and toothed face (pipe) jaws. The movable jaw slides and has rack teeth to engage rack teeth on the shank. Tregallas patented further evolution of this idea on Setp. 26, 1882 (pat. no. 265,188).

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