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US Patent: 1,273,441
Method or Process of Nurling
Patentee:
Edwin Allen Bardwell - Shelburne Falls, Franklin County, MA

USPTO Classifications:
72/412, 72/68, 72/88

Tool Categories:
punches : pin punches

Assignees:
H. H. Mayhew Co. - Shelburne Falls, Franklin County, MA

Manufacturer:
H. H. Mayhew Co. - Shelburne Falls, Franklin County, MA

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 19, 1917
Granted: Jul. 23, 1918

Patent Pictures:
Edwin A. Bardwell patent July 23, 1918
USPTO pdf tiff
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Description:
The process involves impressing cross-hatched grooves in tool surfaces while the metal is hot. A nail set with knurled surface is shown as an example.

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