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US Patent: 2,579,611
Knurling Tool
Patentee:
John E. Poorman (exact or similar names) - Philadelphia, PA

USPTO Classifications:
72/108, 72/703

Tool Categories:
metalworking tools : knurling tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 03, 1949
Granted: Dec. 25, 1951

Patent Pictures:
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Description:
Claim:

According to my invention and after practical demonstration in connection with thousands of pieces of work knurled, I finally solved the problem of holding the knurling rollers in fixed adjusted position with limited friction distribution throughout the associated parts, and yet have succeeded in providing the details so simple that set adjustments can be made in a short space of time.

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