US Patent: 761,798 - Wrench or the Like


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US Patent: 761,798

Wrench or the Like

Patentee:

Frederick E. Walden - Worcester, MA

USPTO Classifications:

81/159

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

Bay State Tool Company - Boston, MA

Manufacturer:

Bay State Tool Company - Boston, MA

Witnesses:

Josephine H. Ryan

Arthur F. Randall

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

Patent Pictures: [ 1 | 2 ]

F.E. Walden Pat. June 7, 1904

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Description:

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.

An April, 1905 MACHINERY writeup mentions four sizes.