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US Patent: 1,470,683
Screw Cutting Machine
Patentee:
Rudolph A. Boehm (exact or similar names) - Erie, Erie County, PA

USPTO Classifications:
470/71

Tool Categories:
metalworking machines : screw machines

Assignees:
Rickert-Shafer Co. - Erie, Erie County, PA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 07, 1922
Granted: Oct. 16, 1923

Patent Pictures:
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"Vintage Machinery" entry for Rickert-Shafer Co.
Description:
Claim:

The object of my invention is to provide suitable mechanism adapted to be placed upon a lathe, which will cut threads upon a rod at a plurality of points in the length thereof simultaneously.

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