Farrowing pen with floor heated plight areas

Claim 1

IN A HOG STALL WHICH COMPRISES A RECTANGULAR ENCLOSURE HAVING A WIDTH OF APPROXIMATELY FIVE FEET AND A LENGTH OF APPROXIMATELY SEVEN FEET, HAVING A FEEDER MEANS LOCATED AT ONE END OF THE ENCLOSURE, THE IMPROVEMENT COMPRISING A RECESSED WASTE GUTTER EXTENDING LATERALLY ALONG THE OTHER END OF THE ENCLOSURE, AND OPEN GRATINGS COVERING SAID GUTTER FORMING A FLOOR WHOSE AREA IS NOT GREATER THAN APPROXIMATELY ONE-FOURTH TO ONE-THIRD OF THE TOTAL FLOOR AREA OF THE STALL, SAID GRATINGS EACH COMPRISING A PLURALITY OF T-IRONS ARRANGED IN SPACED PARALLEL RELATION WITH THEIR CROSS-BAR FORMING PORTIONS UPPERMOST AND THEIR STEM PORTIONS PROJECTING DOWNWARDLY, THE ADJACENT T-IRONS BEING SPACED APART A DISTANCE INSUFFICIENT FOR THE HOOF OF A NEW BORN PIG TO PASS THEREBETWEEN YET BEING SPACED APART A DISTANCE SUFFICIENT TO PERMIT BODY WASTES TO BE FORCED THERETHROUGH INTO THE GUTTER BY THE PIGS'' FEET AND SUB-FLOOR HEATER MEANS LOCATED AND POSITIONED ADJACENT TO THE FEEDER MEANS AT SAID ONE END AND EXTENDING ALMOST TO THE WASTE GUTTER.