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US Patent: 2,724,302
Tool to Be Attached to a Screw Machine or the Like
Patentee:
John E. Poorman (exact or similar names) - Philadelphia, PA

USPTO Classifications:
29/57, 82/137, 82/173

Tool Categories:
metalworking machines : screw machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 10, 1953
Granted: Nov. 22, 1955

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Joel Havens
Description:
Claim:

The object of the invention is to provide a tool which can be readily attached to a screw or like machine to enter the interior of a tube or the bore in the end of a rod while making a washer, sleeve or collar, or to form a groove on the periphery of a tube.

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