Door control closure mechanism

Claim 1

A DOOR ASSEMBLY COMPRISING IN COMBINATION A DOOR FRAME HAVING A HOLLOW SIDE FRAME MEMBER AND A TOP HOLLOW MEMBER CONNECTED WITH THE SAID FIRST-MENTIONED HOLLOW FRAME MEMBER, A DOOR HAVING UPPER AND LOWER HINGES THEREON EXTENDING INTO THE SAID HOLLOW SIDE MEMBER, UPPER AND LOWER FIXED BLOCKS IN THE SAID HOLLOW SIDE MEMBER SUPPORTING EACH OF SAID HINGES, A DOOR HINGE PIN IN THE SAID LOWER HINGE BLOCK EXTENDING INTO THE LOWER HINGE, A TORSION BAR WITHIN THE SAID HOLLOW SIDE MEMBER AND EXTENDING LONGITUDINALLY THEREOF, THE SAID TORSION BAR BEING MOUNTED IN THE DOOR HINGE AT ITS LOWER END AND IN THE UPPER HINGE BLOCK AT ITS UPPER END, A HINGE PIN SECURED TO THE UPPER HINGE EXTENDING INTO THE UPPER HINGE BLOCK AT ONE OF ITS ENDS AND INTO THE HOLLOW TOP FRAME MEMBER AND HAVING AN ANGULARLY DISPOSED ARM AT ITS UPPER END, AND A SPRING MOUNTED FIXED BRAKE SHOE IN THE SAID HOLLOW TOP FRAME MEMBER IN ENGAGEMENT WITH THE END OF THE SAID EXTENSION ARM OF THE HINGE PIN.