Center punch

Details Center punch Center punch

1976-05-19

1978-01-24

Jones, Jr., James L.

Cutlery

Perforating or indenting implements

With portion positioned in work aperture

30366, 33191, B26F 100

Patent

active

040695867

ABSTRACT:
A center punch particularly adapted for locating and marking the center position of a circular opening, as for making a center mark in a stud that has been broken off below the surface, to facilitate drilling and removing the stud. Movable jaws are each provided with an end portion of reduced thickness that extends into the opening adjacent the stud and a shoulder that abuts the exposed surface to retain the punch in a center position.

REFERENCES:
patent: 949856 (1910-02-01), Stroh
patent: 1259335 (1918-03-01), Acton
patent: 2860421 (1958-11-01), Smith

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