US Patent: 489,523 - Wrench Milling Machine


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US Patent: 489,523

Wrench Milling Machine

Patentee:

Varnum F. Carpenter (exact or similar names) - Cleveland, OH

USPTO Classifications:

409/268, 409/275

Tool Categories:

tool making : making wrenches

metalworking machines : broaching machines

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

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

Patent Pictures:

Varnum F. Carpenter patent January 10, 1893

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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."