Door operating mechanism

Claim 1

IN AN INCINERATOR OR THE LIKE HAVING WALLS DEFINING A CHAMBER FOR THE RECEPTION OF COMBUSTIBLE MATERIALS, A CHARGING OPENING IN ONE OF SAID WALLS THROUGH WHICH MATERIALS MAY BE INTRODUCED TO SAID CHAMBER, A CLOSURE MEMBER, AND MEANS MOUNTING SAID CLOSURE MEMBER FOR MOVEMENTS FROM AND TO A POSITION IN WHICH IT CLOSES SAID CHARGING OPENING, AND TO AND FROM AN OPEN POSITION WHEREIN SAID DOOR IS PASSED BEYOND A VERTICAL PLANE PASSING THROUGH THE AXIS OF THE MOUNTING MEANS: OPERATING MEANS; MEANS MOUNTING SAID OPERATING MEANS FOR MOVEMENTS FROM A FIRST POSITION TO A SECOND POSITION AND RETURN; CRANK MEANS; MEANS PIVOTALLY INTERCONNECTING SAID OPERATING MEANS AND SAID CRANK MEANS; AND MEANS CONNECTING SAID CRANK MEANS TO SAID CLOSURE MEMBER FOR MOVEMENT THEREWITH AND AT SUCH AN ANGULAR RELATION WITH SAID INTERCONNECTING MEANS WHEN SAID CLOSURE MEMBER IS IN ITS CLOSED POSITION THAT MOVEMENT OF SAID OPERATING MEANS TOWARD SAID SECOND POSITION EFFECTS RELATIVE MOVEMENT OF SAID INTERCONNECTING MEANS AND SAID CRANK MEANS IN SUCH DIRECTIONS AS TO DISPOSE SAID INTERCONNECTING MEANS AND SAID CRANK MEANS IN DEAD CENTER RELATION, THE MOVEMENT OF SAID CRANK MEANS TO SUCH DEAD CENTER RELATION CAUSING MOVEMENT OF SAID CLOSURE MEMBER IN AN OPENING DIRECTION BUT IN AN AMOUNT INSUFFICIENT TO LOCATE SAID CLOSURE MEMBER IN A VERTICAL POSITION, SAID CLOSURE MEMBER BEING FURTHER MOVABLE IN SAID OPENING DIRECTION INDEPENDENTLY OF SAID OPERATING MEANS TO A SECOND OPEN POSITION INCLINED PAST THE VERTICAL, SAID CONNECTING MEANS BETWEEN SAID CLOSURE MEMBER OF SAID CRANK MEANS EFFECTING RELATIVE MOVEMENT OF SAID CRANK MEANS AND SAID INTERCONNECTING MEANS TO POSITIONS BEYOND DEAD CENTER DURING SUCH FURTHER MOVEMENT, SAID OPERATING MEANS BEING CAPABLE OF FURTHER MOVEMENT TOWARD SAID SECOND POSITION WHEN SAID CLOSURE MEMBER IS IN SAID SECOND POSITION TO EFFECT RELATIVE MOVEMENT OF SAID CRANK MEANS AND SAID INTERCONNECTING MEANS IN DIRECTION SUCH THAT SAID CLOSURE MEMBER IS MOVED TOWARD ITS CLOSED POSITION.