US Patent: 306,783 - Screw Cutting Die


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US Patent: 306,783

Screw Cutting Die

Patentee:

Albert J. Smart (exact or similar names) - Greenfield, MA

USPTO Classifications:

408/162, 408/182

Tool Categories:

industrial tools : taps and dies

Assignees:

Wiley & Russell Manufacturing Co. - Greenfield, MA

Manufacturer:

Not known to have been produced

Witnesses:

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

Patent Pictures:

Albert J. Smart patent October 21, 1884

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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).