Ceiling support structure with collapsible joint clip

Claim 1

IN A CEILING SUPPORT STRUCTURE COMPRISING A PLURALITY OF LONGITUDINAL T''S WITH A PLURALITY OF CROSS T''S EXTENDING BETWEEN THE LONGITUDINAL T''S WITH CLIPS ENGAGING THE END OF EACH CROSS T AND CONNECTING IT TO THE ADJACENT LONGITUDINAL T, AND WHEREIN SAID T''S HAVE VERTICAL WEBS AND HORIZONTAL FLANGES, THE IMPROVEMENT COMPRISING: SAID END OF THE CROSS T HAVING A NOSE FORMED AS AN EXTENSION OF THE WEB, SAID NOSE HAVING AN END SPACED FROM THE WEB OF THE LONGITUDINAL T AND A TERMINUS AT WHICH THE NOSE JOINS THE WEB, SAID CROSS T DEFINING AN ABUTMENT AT SAID TERMINUS; SAID CLIP BEING RECEIVED ON SAID NOSE AND HAVING MEANS ENGAGING THE NOSE TO PREVENT WITHDRAWAL OF THE CLIP FROM THE NOSE WHILE PERMITTING THE CLIP TO MOVE IN THE OPPOSITE DIRECTION ON THE NOSE, SAID CLIP HAVING MEANS EXTENDING BEYOND SAID END AND ENGAGING THE WEB OF THE LONGITUDINAL T, AND DEFORMABLE MEANS EXTENDING IN THE OPPOSITE DIRECTION INTO CONTRACT WITH SAID ABUTMENT TO NORMALLY PERVENT MOVEMENT OF THE CLIP IN SAID OPPOSITE DIRECTION ON SAID NOSE.