Apparatus for molding concrete t-beams

Claim 1

FOR USE IN MOLDING APPARATUS FOR A CONCRETE BEAM HAVING A HORIZONTAL FLAT SLAB SECTION AND A VERTICAL WEB SECTION, AN ARTICLE OF MANUFACTURE COMPRISING A PIVOTALLY MOUNTED MOLDING MEMBER HAVING A FIRST FORMING SURFACE FOR FORMING A SIDE OF SAID WEB SECTION AND A SECOND FORMING SURFACE EXTENDING LATERALLY FROM SAID FIRST FORMING SURFACE FOR FORMING AN ADJACENT UNDERSIDE OF SAID SLAB SECTION, MEANS ON SAID SECOND FORMING SURFACE TO RECEIVE A FORMING MEMBER FOR THE LATERAL SIDE OF SAID SLAB SECTION, A RIGID STRUT PIOVOTALLY CONNECTED AT ONE OF ITS ENDS TO SAID MOLDING MEMBER BENEATH SAID SLAB FORMING SURFACE, A LINK HAVING A PIVOTAL CONNECTION AT ONE OF ITS ENDS WITH THE OTHER END OF SAID STRUT TO FORM A MOVABLE TOGGLE JOINT. SUPPORT MEANS, MEANS SECURING THE OTHER END OF SAID LINK TO SAID SUPPORT MEANS SO THAT SAID STRUT AND SAID LINK ARE MOVABLE INTO AND OUT OF COAXIAL ALIGNMENT, MEANS PIVOTALLY MOUNTING THE MOLDING MEMBER ON SAID SUPPORT MEANS FOR MOVEMENT OF SAID FIRST FORMING SURFACE, MEANS MOUNTED ON SAID SUPPORT MEANS IN SPACED RELATION TO SAID OTHER END OF SAID LINK FOR LIMITING THE MOVEMENT OF SAID TOGGLE JOINT IN ONE DIRECTION AT A POSITION WHEREBY SAID STRUT AND SAID LINK ARE OUT OF COAXIAL ALIGNMENT TO CAUSE THE WEIGHT OF CONCRETE ON SAID SLAB FORMING SURFACE TO LOCK SAID STRUT AND LINK IN PLACE, AND MEANS FOR MOVING SAID TOGGLE JOINT IN A SECOND DIRECTION TO CAUSE SAID MOLDING MEMBER TO PIVOT AND BE RELEASED FROM A CONCRETE BEAM FORMED THEREON.