Mechanism for facilitating the closing of doors and similar closures

Claim 1

A MECHANISM TO FACILITATE CLOSING OF A DOOR TO A WARPED STRUCTURE COMPRISING IN COMBINATION: A STRUCTURE HAVING AN APERTURE FOR RECEIVING AND ENGAGING A DOOR PERIPHERY TO IMPOSE A STRUCTURAL LOAD THEREON, SAID STRUCTURE BEING SUBJECT TO WARPING TO DISTORT SAID APERTURE WHEN THE DOOR IS OPEN, A LARGE DOOR, HINGE MEANS CONNECTING A PERIPHERAL PORTION OF THE DOOR TO SAID STRUCTURE AT SAID APERTURE FOR SWINGABLY OPENING AND CLOSING THE DOOR, MOVABLE MEANS MOUNTED ON SAID DOOR AT A POINT REMOTE FROM SAID PERIPHERAL PORTION, SOCKET MEANS MOUNTED ON SAID STRUCTURE ADJACENT TO A PORTION THEREOF WHERE DISTORTION OF THE APERTURE IS MAXIMUM AND REMOTE FROM SAID PERIPHERAL PORTION OF THE DOOR, SAID SOCKET MEANS BEING SHAPED AND DISPOSED TO ENGAGE SAID MOVABLE MEANS WHEN THE DOOR IS PARTIALLY CLOSED, DRIVE MEANS FOR MOVING SAID MOVABLE MEANS IN ONE DIRECTION A DISTANCE GREATER THAN THE MAXIMUM DISTORTION OF SAID STRUCTURE AT SAID APERTURE AND FOR THEN MOVING SAID MOVABLE MEANS IN AN OPPOSITE DIRECTION TO ENGAGE AND APPLY A FORCE ON SAID SOCKET MEANS IN SAID OPPOSITE DIRECTION, SAID OPPOSITE DIRECTION BEING THE DIRECTION OF THE LARGEST DIMENSION OF THE DOOR, WHEREBY SAID MOVABLE MEANS AND SAID SOCKET MEANS COOPERATE TO RESTORE THE STRUCTURE TO UNWARPED SHAPE WITHOUT WARPING THE DOOR AND THEREBY RESTORE THE DISTORTED APERTURE TO UNDISTORTED SHAPE CONFORMING TO THE PERIPHERY OF THE DOOR WHILE DRAWING THE DOOR CLOSED, AND MEANS FOR LOCKING THE DOOR INDEPENDENT OF SAID MOVABLE MEANS AND SAID SOCKET MEANS SO THAT SAID MOVABLE MEANS AND SOCKET MEANS ARE DISENGAGEABLE FROM EACH OTHER WHILE THE DOOR IS LOCKED TO PERMIT THE DOOR TO ASSUME A STRUCTURAL LOAD AND TO OPEN FREELY WHEN THE LOCKING MEANS IS RELEASED.