Device for protecting tools and workpieces from damage on a hydr

Details Device for protecting tools and workpieces from damage on a hydr Device for protecting tools and workpieces from damage on a hydr

1976-03-17

1977-02-08

Abercrombie, Willie G.

Cutting

With randomly actuated stopping means

Responsive to work sensing means

83368, 408 6, 408 7, B26D 724, B26D 520

Patent

active

040066550

ABSTRACT:
A device for precluding improper operation of a stamping press including a control cylinder the piston of which is impinged on one side by a pressure medium and on the other side by a pressure medium having a variable constant pressure. Electrical switch elements are utilized to prevent the stamping operation from progressing unless preset conditions exist.

REFERENCES:
patent: 3513736 (1970-05-01), Thorman

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