Switch interlock and lockout unit

Claim 1

A COMBINATION INTERLOCK AND LOCKOUT UNIT FOR USE WITH MULTIPLE ELECTRICAL SWITCHING ASSEMBLIES, SAID UNIT COMPRISING A HOUSING, A PLURALITY OF PUSH RODS MOUNTED IN SAID HOUSING FOR RECIPROCAL MOVEMENT THROUGH SAID HOUSING, AN INTERLOCK PLATE TRANSVERSELY OF SAID HOUSING, SPACED OPENINGS FORMED IN SAID PLATE AND IN ALIGNMENT WITH SAID PUSH RODS, MEANS MOUNTING SAID INTERLOCK PLATE FOR LIMITED TRANSVERSE MOVEMENT IN SAID HOUSING, PLATE CAMMING MEANS FORMING A PART OF EACH PUSH ROD AND ALIGNED FOR ENGAGEMENT WITH AN EDGE PORTION OF A PLATE OPENING TO MOVE SAID PLATE, SAID CAMMING MEANS INCLUDING AN INCLINED PLANE SURFACE PORTION AND A RADIAL SHOULDER PORTION, SPRING RETURN MEANS ENGAGING SAID PUSH RODS TO URGE THE SAME AWAY FROM SAID PLATE, THE CAMMING MEANS OF ONE OF SAID PUSH RODS UPON ACTUATION THEREOF TOWARDS SAID PLATE ENGAGING AN EDGE PORTION OF ONE OF SAID PLATE OPENINGS TO MOVE SAID PLATE AND PASS THROUGH SAID OPENING, THE RADIAL SHOULDER PORTION ENGAGING THE OPPOSITE FACE OF SAID PLATE TO HOLD SAID PUSH ROD IN LOCKED POSITION, AND LOCKOUT MEANS IN THE FORM OF A SERIES OF PLATES PIVOTALLY MOUNTED IN SAID UNIT IN SIDE-BY-SIDE RELATION ALONG THE OPPOSITE SIDE OF SAID INTERLOCK PLATE WITH ADJACENT EDGES OVERLYING SAID OPENINGS, SAID LOCKOUT PLATES BEING SPACED RELATIVE TO ONE ANOTHER TO BE PIVOTED TO THEIR FULLEST EXTENT AND TO BE PLACED IN RELATIVELY TIGHT ENGAGEMENT WITH ONE ANOTHER UPON THE INSERTION OF A PORTION OF SAID PUSH ROD BETWEEN A PAIR OF SAID LOCKOUT PLATES WHEN SAID PUSH ROD IS ACTUATED THROUGH SAID OPENING.