US Patent: 253,996 - Screw-cutting die


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US Patent: 253,996

Screw-cutting die

Patentee:

William D. Forbes (exact or similar names) - Bridgeport, CT

USPTO Classifications:

408/104, 408/124, 408/138, 470/66

Tool Categories:

industrial tools : taps and dies

metalworking tools : taps and dies

Assignees:

None

Manufacturer:

Curtis & Curtis Co. - Bridgeport, CT

Witnesses:

Harry Drury

Harry Smith

Patent Dates:
Applied:	Nov. 14, 1881
Granted:	Feb. 21, 1882

Patent Pictures:

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Vintage Machinery entry for Curtis & Curtis Co.

Description:

A 1909 ad from Curtis & Curtis Co. features "The Forbes Patent Die Stock" which was claimed to have "revolutionized pipe cutting and threading methods."