Safety guard for power presses

Claim 1

A SAFETY DEVICE FOR A POWER PRESS HAVING AN OPERATING AREA, COMPRISING (A) A CLUTCH OPERATING ROD, (B) A MANUAL FOOT-TREADLE-OPERATED CONNECTING ROD IN SUBSTANTIAL ALIGNMENT THEREWITH, (C) MEANS PROVIDED BY OPPOSITE ADJACENT ENDS OF SAID RODS FOR RELEASABLY INTERCONNECTING SAID RODS TOGETHER, SAID CONNECTING ROD NORMALLY DISPOSED FROM INTERCONNECTING WITH SAID OPERATING ROD AND HAVING MANUAL LIMITED INDEPENDENT LONGITUDINAL MOVEMENT WITH RESPECT TO THE OPERATING ROD, (D) MEANS INCLUDING A PAIR OF LINKS PIVOTED TOGETHER TO PROVIDE A TOGGLE, SAID LINKS ADAPTED TO BE PIVOTED INTO EXTENDED SUBSTANTIALLY ALIGNED POSITION WITH RESPECT TO EACH OTHER INTO ENGAGEMENT WITH SAID CONNECTING ROD TO MOVE THE SAME INTO SAID INTERCONNECTING WITH THE OPERATING ROD, (E) SOLENOID MEANS FOR EXTENDING SAID LINKS, (F) GUARD MEANS, (G) MEANS FOR SUPPORTING SAID GUARD MEANS ON SAID PRESS FOR MOVEMENT FROM AND INTO SAID OPERATING AREA, SAID GUARD MEANS BEING MOVABLE INTO SAID OPERATING AREA BY GRAVITY, (H) LATCH MEANS FOR RELEASABLY LATCHING SAID GUARD MEANS AGAINST SAID MOVEMENT BY GRAVITY, (I) AN ELECTRIC CIRCUIT FOR SAID SOLENOID MEANS, (J) SWITCH MEANS IN SAID CURCUIT FOR CONTROLLING ENERGIZATION OF SAID SOLENOID MEANS AND ACTUATED BY AND ENGAGEABLE WITH SAID GUARD MEANS WHEN IN SAID OPERATING AREA, (K) A SECOND SWITCH MEANS HAVING AN ACTUATING PLUNGER, (L) MEANS ACTUATED BY THE MOVEMENT OF THE CONNECTING ROD FOR ACTUATING SAID PLUNGER TO CLOSE SAID SECOND SWITCH MEANS BEFORE INTERCONNECTION OF THE CONNECTING ROD WITH SAID OPERATING ROD, (M) A SECOND SOLENOID IN SAID CIRCUIT AND IN CIRCUIT WITH SAID SECOND SWITCH MEANS FOR ACTUATING, WHEN SAID SECOND SWITCH MEANS IS CLOSED, SAID LATCH MEANS TO RELEASE SAID GUARD MEANS FOR MOVEMENT BY GRAVITY INTO SAID OPERATING AREA.