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US Patent: 300,445
Manufacture of Wrench Forgings
Luke Chapman - Collinsville, CT

USPTO Classifications:
72/339, 72/378, 76/114

Tool Categories:
wrenches : wrench components

Collins Company - Collinsville, CT

Collins Company - Collinsville, CT

Albert L. Thayer
Oliver F. Perry
C. L. Burdett
W. H. Marsh

Patent Dates:
Applied: Oct. 29, 1883
Granted: Jun. 17, 1884

Patent Pictures:
Luke Chapman patent June 17, 1884
USPTO pdf tiff
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The patent describes successive stages in producing the shank and fixed jaw portion of a monkey wrench from a common size of bar stock. The initial patent application was dated April 22, 1882, with a re-application in 1883.

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