US Patent: 2,724,302
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Tool to Be Attached to a Screw Machine or the Like
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Patentee:
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John E. Poorman (exact or similar names) - Philadelphia, PA |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Mar. 10, 1953 |
Granted: |
Nov. 22, 1955 |
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Joel Havens
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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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