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US Patent: 1,458
Cutting Grooves in Hubs
Mode of Cutting Seats, Slots, or Grooves for the Reception of Keys in the Hubs and Axles of Car-Wheels and in other Machinery
Patentee:
Thomas J. Butler - Johnstown, Cambria County, PA

USPTO Classifications:
30/361, 409/304, 409/305, 59/41, 83/917

Tool Categories:
metalworking machines : key seating machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Dec. 31, 1839
Antedated: Jul. 01, 1839

Patent Pictures:
USPTO pdf tiff
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