Portable marking tool

Details Portable marking tool Portable marking tool

1981-06-15

1983-08-30

Burr, Edgar S.

Printing

Bed-and-platen machines

Reciprocating bed

101 41, 101 4, B41F 106, B41F 1700

Patent

active

044010303

ABSTRACT:
A portable marking tool having a cylindrical housing and a concentric cylinder slidably supporting the hammer member for delivering an impact to a marking die. A charge of air is built up in the housing which is suddenly imposed on the piston-like hammer member when the charge of air is built up to overcome a predetermined opposing load. In one embodiment, the opposing load is afforded by a pressure regulated chamber and in another embodiment by an adjustable spring load.

REFERENCES:
patent: 2546114 (1951-03-01), Triplett et al.
patent: 2995113 (1961-08-01), Steiner
patent: 3067724 (1962-12-01), Jenney et al.
patent: 3208353 (1965-09-01), Wandel
patent: 3762484 (1973-10-01), Speicher
patent: 4077319 (1978-03-01), Edmisten

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