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US Patent: 489,523
Wrench Milling Machine
Patentee:
Varnum F. Carpenter - Cleveland, OH

USPTO Classifications:
409/268, 409/275

Tool Categories:
tool making : making wrenches
metalworking machines : broaches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. J. Symes
R. B. Moser
Nellie L. McLane
H. T. Fisher

Patent Dates:
Applied: Apr. 04, 1892
Granted: Jan. 10, 1893

Patent Pictures:
Varnum F. Carpenter patent January 10, 1893
USPTO pdf tiff
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Description:
Plungers operated by an eccentric crank push the wrench blank through the milling cutters. The plates with the cutters are described in some detail. The wrench form shown is the shank and head of a "monkey wrench."

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