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US Patent: 416,154
Nut Wrench
Peter Cosette - Crystal Falls, MI

USPTO Classifications:
81/124.4, 81/62

Tool Categories:
wrenches : ratchet wrenches
wrenches : wrench components : wrench sockets


Not known to have been produced

W. S. Duvall
John Imiru
Patrick E. Dunn
Sumner Hopkins

Patent Dates:
Applied: Jun. 13, 1889
Granted: Dec. 03, 1889

Patent Pictures:
Peter Cosette patent December 3, 1889
USPTO pdf tiff
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There are pairs of alternately-directed toothed wheels. Thumb screws near the bases of the pawls can be screwed in to disengage the pawls from the rack teeth. One of each socket pair has a shank with a square section; the other socket of each pair has a corresponding square opening and a set-screw to hold the socket pair together.

The inventor's last name appears as Cossette in parallel Canadian patent CA-33,434 and U.S. improvement patent 481,690.

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