Feed troughs

Claim 1

IN A FEED TROUGH FORMED OF MODULAR SECTIONS, A PLURALITY OF PAIRED LONGITUDINALLY SPACED VERTICAL SUPPORTS, EACH OF SAID SUPPORTS COMPRISING CHANNEL MEMBERS HAVING THEIR WEBS IN BACK TO BACK RELATIONSHIP WITH THE FLANGES THEREOF IN CONFRONTING RELATIONSHIP WITH THE CHANNEL MEMBERS OF A SUPPORT SPACED THEREFROM, VERTICAL SIDE WALLS ADAPTED TO BE RECEIVED IN SAID CHANNEL MEMBERS AND EXTENDING BETWEEN SAID SPACED SUPPORTS, THE FLANGES OF SAID CHANNEL MEMBERS BEING DIVERGENT TO RECEIVE SAID VERTICAL SIDE WALLS, A HORIZONTAL CROSS MEMBER EXTENDING BETWEEN EACH PAIR OF VERTICAL SUPPORTS AND PROVIDING A GUIDE CHANNEL IN CONFRONTING RELATIONSHIP WITH THE HORIZONTAL CROSS MEMBER OF A SUPPORT SPACED THEREFROM, A FLOOR BOARD ADAPTED TO BE SUPPORTED BY SAID HORIZONTAL CROSS MEMBERS AND EXTENDING BETWEEN THE SAME, SAID HORIZONTAL CROSS MEMBERS HAVING DIVERGENT FLANGES TO RECEIVE SAID FLOOR BOARD, SAID VERTICAL SIDE WALLS BEING ADAPTED TO REST UPON SAID FLOOR BOARD, SPACED ANGLE MEMBERS EXTENDING ALONG SAID VERTICAL SUPPORTS AND IN CONFRONTING RELATIONSHIP WITH EACH OTHER, A PARTITION ADAPTED TO BE RECEIVED WITHIN SAID SPACED CONFRONTING FLANGES, ADJUSTABLE MEANS EXTENDING BETWEEN SAID PAIRS OF SPACED VERTICAL SUPPORTS FOR HOLDING THE ENDS OF SAID VERTICAL SIDE WALLS AND SAID FLOOR BOARD IN POSITION OF CLAMPING ENGAGEMENT WITH THEIR RESPECTIVE SUPPORTING CHANNEL MEMBERS, AND MEANS EXTENDING BENEATH SAID FLOOR BOARD INCLUDING A HOOK MEMBER EXTENDING UPWARD FROM EACH END OF SAID LAST NAMED MEANS FOR HOLDING SAID FLOOR BOARD AGAINST THE BOTTOM EDGE OF SAID VERTICAL SIDE WALLS.