Door section assembly apparatus

Claim 1

APPARATUS FOR RIGIDLY ASSEMBLING A DOOR SECTION HAVING SIDE RAILS AND CROSS SUPPORTS POSITIONED BETWEEN THE SIDE RAILS, COMPRISING A FRAME FOR SUPPORTING SAID DOOR SECTION, AN OVERHEAD ASSEMBLY MOUNTED ON SAID FRAME, SAID ASSEMBLY HAVING LATERALLY ASSEMBLY MOUNTED AND LATERALLY MOVABLE SIDES AND HOLD-DOWN PLATES MOUNTED ON EACH OF SAID SIDES, BOTH OF SAID SIDES BEING MOVABLE IN A VERTICAL DIRECTION WHEREBY SAID HOLD-DOWN PLATES MAINTAIN SAID DOOR SECTION IN POSITION AGAINST SAID FRAME, SUPPORT MEMBERS SLIDABLY CARRIED BY SAID OVERHEAD ASSEMBLY AND FIXEDLY CARRYING SAID HOLD-DOWN PLATES, CONTACT MEMBERS MOUNTED ON THE UNDER SIDE OF SAID HOLD-DOWN PLATES AND BEING ADAPTED TO TRANSMIT ENDWISE PRESSURE TO SAID DOOR SECTION, MEANS FOR SLIDING SAID SUPPORT MEMBERS WHEREBY ENDWISE PRESSURE IS APPLIED TO SAID DOOR SECTION BY SAID CONTACT MEMBERS FOR RIGIDLY ALIGNING SAID CROSS SUPPORTS WITH SAID SIDE RAILS, MEANS MOUNTED ON SAID FRAME FOR APPLYING CROSSWISE PRESSURE TO SAID DOOR SECTION SO AS TO ALIGN SAID RAILS WITH SAID CROSS SUPPORTS WHEREBY SAID CROSS SUPPORTS AND SAID RAILS ARE RIGIDLY HELD IN PLACE, AND MEANS MOUNTED ON SAID FRAME FOR FASTENING SAID CROSS SUPPORTS AND SAID SIDE RAILS TOGETHER AS PARTS OF SAID DOOR SECTION ARE BEING MAINTAINED IN SUBSTANTIALLY THE SAME PLANE AND AS SAID DOOR SECTION IS UNDER CROSSWISE AND ENDWISE PRESSURE SO AS TO RIGIDLY ASSEMBLE SAID DOOR SECTION.