Adjustable diameter stamp

Details Adjustable diameter stamp Adjustable diameter stamp

1986-06-27

1988-02-23

Spruill, Robert L.

Metal deforming

Tool and/or tool holder

Having unitary tool-face

72413, 101 28, B21J 1302

Patent

active

047262150

ABSTRACT:
A method and apparatus is provided for stamping or printing identification indicia on a circular segment such as the flat portion of the head of a cap screw, bearing race, or stud end. The adjustable diameter stamp uses a plurality of segments which, when fitted together, form a cylinder or other polygonal shape which is held securely in a matching collet during the stamping operation. Variable diameter stamping is accomplished by using different sized stamping segments. Also, shims may be used to provide marking diameter adjustment. The preferred embodiment uses four wedge-shaped stamping segments.

REFERENCES:
patent: 481087 (1892-08-01), Wilson, Sr.
patent: 1519005 (1924-12-01), Pannier, Jr.
patent: 2627803 (1953-02-01), Pannier
patent: 2906150 (1959-09-01), Stewart
patent: 3187549 (1965-06-01), Guy

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