Portable bleacher

Claim 1

A BLEACHER, COMPRISING A PLURALITY OF RIGHT TRIANGULAR FRAMES EACH HAVING A VERTICAL MEMBER WITH A FOOT AT THE BOTTOM THEREOF, A HORIZONTAL MEMBER HAVING A FOOT AT THE END REMOTE FROM THE VERTICAL MEMBER, AND A PLURALITY OF HORIZONTAL BEAMS ALONG THE HYPOTENUSE, A SEAT SUPPORT ON EACH HORIZONTAL BEAM, SAID RIGHT TRIANGULAR FRAMES BEING ARRANGED IN SETS WITH EACH SET COMPRISING A FRONT TRIANGULAR FRAME ADAPTED TO REST ON THE GROUND, AND AT LEAST ONE REARWARD TRIANGULAR FRAME HAVING THE FOOT REMOTE FROM THE VERTICAL MEMBER INTERLOCKED WITH THE TOP OF THE VERTICAL MEMBER OF SAID FRONT TRIANGULAR FRAME, A FIRST AUXILIARY FRAME BENEATH EACH REARWARD TRIANGULAR FRAME AND HAVING A VERTICAL MEMBER INTERLOCKED WITH THE FOOT AT THE BOTTOM OF THE VERTICAL MEMBER OF SAID REARWARD TRIANGULAR FRAME AND HAVING A REARWARDLY AND DOWNWARDLY SLOPING MEMBER CONNECTED TO THE BOTTOM OF THE VERTICAL MEMBER OF THE AUXILIARY FRAME AND INTERLOCKED WITH THE HORIZONTAL MEMBER OF THE TRIANGULAR FRAME, AND AT LEAST ONE FURTHER TRIANGULAR FRAME TO THE REAR OF SAID REARWARD TRIANGULAR FRAME, AT LEAST ONE SECOND AUXILIARY FRAME HAVING JOINED VERTICAL, HORIZONTAL AND DOWNWARDLY AND REARWARDLY SLOPING MEMBERS, THE JUNCTION OF THE HORIZONTAL AND SLOPING MEMBERS BEING INTERLOCKED WITH THE BOTTOM OF THE VERTICAL MEMBER OF THE REARWARD TRIANGULAR FRAME AND THE TOP OF THE VERTICAL MEMBER OF THE FIRST AUXILIARY FRAME IMMEDIATELY IN FRONT OF THE SECOND AUXILIARY FRAME, AND THE TOP OF THE VERTICAL MEMBER OF THE SECOND AUXILIARY FRAME BEING INTERLOCKED WITH THE BOTTOM OF THE VERTICAL MEMBER OF THE FIRST AUXILIARY FRAME IMMEDIATELY ABOVE SAID SECOND AUXILIARY FRAME, SAID SETS OF FRAMES BEING SIDE BY SIDE AND SPACED ALONG THE LENGTH OF THE BLEACHER, TRIANGULAR BRACING MEMBERS INTERLOCKED BETWEEN THE REAR ENDS OF ADJACENT SETS OF FRAMES, FOOTREST AND SEAT PORTIONS EXTENDING BETWEEN SAID SETS OF FRAMES AND INTERLOCKED WITH THE BEAMS AND SEAT SUPPORTS ON SAID TRIANGULAR FRAMES AND HAVING THE ENDS OF ADJACENT FOOTREST AND SEAT PORTIONS INTERLOCKED WITH EACH OTHER, ALL OF THE INTERLOCKING CONNECTIONS BEING SEPARABLE ONLY BY RELATIVE MOVEMENT OF THE INTERLOCKING PARTS, AND LOCKING MEANS LOCKING THE END SETS OF FRAMES, SEATS AND FOOTRESTS AGAINST RELATIVE MOVEMENT, WHEREBY THE PARTS OF SAID BLEACHER ARE HELD IN INTERLOCKED RELATIONSHIP.