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US Patent: 303,060
Screw Cutting Die
Patentee:
Albert J. Smart - Greenfield, MA

USPTO Classifications:
408/162

Tool Categories:
industrial tools : taps and dies

Assignees:
Wiley & Russell Manufacturing Co. - Greenfield, MA

Manufacturer:
Wiley & Russell Manufacturing Co. - Greenfield, MA

Witnesses:
F. W. Howard
Edw. H. Downs
John Putnam
Joseph H. Nutting

Patent Dates:
Applied: Jun. 01, 1883
Granted: Aug. 05, 1884

Patent Pictures: [ 1 | 2 ]
Albert J. Smart patent August 5, 1884
USPTO pdf tiff
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"Vintage Machinery" entry for Wiley & Russell Manufacturing Co.
Description:
The taper-headed screws adjust the size; the four side screws hold the cutters firmly in the holder. Marketed as the Wiley & Russell LIGHTNING SCREW PLATE.

The taper-headed screws are carried over from the J.J. Grant October 21, 1871 patent (no. 120,266). This patent was improved by Smart's Oct. 21, 1884 patent (no. 306,783).

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