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Safety guard for power operated machine

  • US 4,060,160 A
  • Filed: 11/17/1975
  • Issued: 11/29/1977
  • Est. Priority Date: 11/17/1975
  • Status: Expired due to Term
First Claim
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1. A safety guard for a power operated machine, which machine utilizes a reciprocating part, including a working tool, located above a fixed bed for supporting a workpiece, comprising;

  • a safety gate mounted to the reciprocating part by a connecting means and made to be free floating in at least one direction, said gate being spaced from said reciprocating part and movable in a path parallel to said working tool;

    a first sensing means actuated by movement of said safety gate to sense the presence of a foreign object;

    an interfacing means to interface said first sensing means with said power operated machine so the intitial motion of the reciprocating part will be stopped when the foreign object is sensed;

    a second electrically conductive sensing means secured to said safety gate to sense the presence of a conductive workpiece; and

    means for connecting said second conductive sensing means to said power operated machine through said conductive workpiece and said interfacing means for continuing the initial motion of said reciprocating part while said second sensing means is in contact with said workpiece.

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