Press safety device

Details Press safety device Press safety device

1980-04-10

1982-03-30

Herrmann, Allan D.

Machine element or mechanism

Elements

Guard mechanisms

100 53, 192131R, F16P 306

Patent

active

043218415

ABSTRACT:
The specification discloses a safety device for presses and other similar machines in which stock material is manually inserted between converging machine parts. A ram and sleeve arrangement cooperates with a collar mounted on the moving portion of the machine to insure that the operator's hands are drawn completely back to the safety position prior to the commencement of the machine stroke. In the event that the ram does not operate at the commencement of the press cycle, the collar abuts the sleeve on the downward stroke of the press, and moves the pull-back mechanism therewith to the safety position.

REFERENCES:
patent: 2011047 (1935-08-01), Gaul
patent: 2427928 (1947-09-01), Shaw
patent: 2429065 (1947-10-01), Korkowski
patent: 2642755 (1953-06-01), Shaw
patent: 3011610 (1961-12-01), Stiebel et al.
patent: 3108491 (1963-10-01), Buker
patent: 3490310 (1970-01-01), Gill
patent: 3804002 (1974-04-01), Wingle
patent: 3884336 (1975-05-01), Williamson
patent: 4195722 (1980-04-01), Anderson et al.
Publication, "Possons Pull-Backs and Hold-Backs," Catalog 20, The Positive Safety Manufacturing Company, Cleveland, Ohio, 1973.

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