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US Patent: 306,783
Screw Cutting Die
Patentee:
Albert J. Smart - Greenfield, MA

USPTO Classifications:
408/162, 408/182

Tool Categories:
industrial tools : taps and dies

Assignees:
Wiley and Russell Manufacturing Company - Greenfield, MA

Manufacturer:
Not known to have been produced

Witnesses:
Edw. H. Downs
F. W. Howard
Anson K. Warner
Chauncey Bryant

Patent Dates:
Applied: Aug. 08, 1883
Granted: Oct. 21, 1884

Patent Pictures:
Albert J. Smart patent October 21, 1884
USPTO pdf tiff
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Description:
The perimeter groove is to insure alignment of the die within the stock. The remainder of the patent substantially repeats Smart's Aug. 5, 1884 patent (no. 303,060).

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