Lock for doors to autoclaves and the like

Claim 1

IN A PRESSURE VESSEL OF THE CLASS DESCRIBED HAVING A DOOR FRAME AND DOOR HAVING A RIM FORMED WITH GUIDE MEANS, THE COMBINATION OF A PLURALITY OF LOCK MEMBERS, A PART, MEANS FOR MOUNTING THE PART FOR FORWARD AND REARWARD MOVEMENT, RESPECTIVELY, FROM AND TOWARD THE INNER FACE OF THE DOOR, MOTION TRANSMITTING MEANS COMPRISING THE MOVABLE PART FOR MOVING THE LOCK MEMBERS RADIALLY OUTWARD AND INWARD, RESPECTIVELY, FROM AND TOWARD THE PART, THE OUTER ENDS OF THE LOCK MEMBERS UPON OUTWARD RADIAL MOVEMENT THEREOF FROM THE PART ENGAGING INWARD FACING SURFACE PORTIONS OF THE DOOR FRAME TO HOLD THE DOOR IN A CLOSED POSITION, EACH OF THE LOCK MEMBERS COMPRISING A PAIR OF INNER AND OUTER LINK ELEMENTS DEFINING TOGGLES HAVING KNUCKLES, FIRST CONNECTING MEANS AT THE KNUCKLES FOR PIVOTALLY CONNECTING THE OUTER AND INNER LINK ELEMENTS TO ONE ANOTHER, THE MOTION TRANSMITTING MEANS FURTHER INCLUDING SECOND CONNECTING MEANS PIVOTALLY CONNECTING THE INNER ENDS OF THE INNER LINK ELEMENTS TO THE PART, THE LOCK MEMBERS BEING SWINGABLE LIKE TWO-ARMED LEVERS WITH THE OUTER LINK ELEMENTS PIVOTALLY MOVABLE ABOUT THE GUIDE MEANS AT THE RIM OF THE DOOR, THE DOOR INCLUDING STRUCTURE PROVIDING STOPS TO LIMIT THE PIVOTAL MOVEMENT OF THE OUTER LINK ELEMENTS ABOUT THE GUIDE MEANS AND ABUTMENT MEANS AT THE VICINITY OF THE PART, THE ABUTMENT MEANS HAVING SLIDE SURFACE REGIONS ADJACENT TO THE PART WHICH FACE THE INNER ENDS OF THE OUTER LINK ELEMENTS, ADN THE LAST-MENTIONED SLIDE SURFACE REGIONS, WHEN THE DOOR IS MOVED FROM ITS CLOSED POSITIONED AT THE DOOR FRAME, FUNCTIONING TO IMPEDE RADIAL INWARD MOVEMENT OF THE OUTER LINK ELEMENTS TOWARD THE PART UNTIL THE STOPS ACT AGAINST THE INNER ENDS OF THE OUTER LINK ELEMENTS RESPONSIVE TO PIVOTAL MOVEMENT OF THE OUTER LINK ELEMENTS.