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US Patent: 765,569
Alfred G. Ely - New York, NY

USPTO Classifications:

Tool Categories:
wrenches : wrench components : wrench jaw components


Trimont Manufacturing Company - Roxbury, MA

Edith M. Stoddard
Geo. W. Gregory
G. William Lutton
Thomas J. Drummond

Patent Dates:
Applied: Jul. 05, 1903
Granted: Jul. 19, 1904

Patent Pictures: [ 1 | 2 | 3 | 4 ]
Alfred G. Ely patent July 19, 1904
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The features of this patent used in production are the slotted shaft of the movable jaw and "T" rib and retainer on the main handle piece. The patent describes a pipe wrench.

The abridged specifications for corresponding British patent GB-190416376 (no. 16,376 of 1904) note a nut wrench option. The nut wrench was called the TRIMO MONKEY WRENCH, with a thin profile 10 inch version called the AUTO. .

By 1912, this design for the monkey wrench was dropped and replaced with a solid shank adjustable jaw passing through a relatively thin walled frame extending from the handle -- the frame style appears in patent no. 1,430,955.

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