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US Patent: 761,798
Wrench or the Like
Frederick E. Walden - Worcester, MA

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Bay State Tool Company - Boston, MA

Bay State Tool Company - Boston, MA

Josephine H. Ryan
Arthur F. Randall

Patent Dates:
Applied: Sep. 04, 1903
Granted: Jun. 07, 1904

Patent Pictures: [ 1 | 2 ]
Frederick E. Walden patent June 7, 1904
USPTO pdf tiff
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Walden's quick adjust monkey wrench used an interrupted screw moved by a thumb toggle. The patent was used in the BAY STATE quick-adjust monkey wrench. Patent no. 763,226 applies the same interrupted screw principle to a bench vise.

An April, 1905 MACHINERY writeup mentions four sizes.

Corresponding British patent GB-190409535 was registered April 26, 1904.

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