▁in fr ing ed ▁W att ' s ▁pat ents . ▁Two ▁brothers , ▁J abe z ▁Carter ▁Horn b lower ▁and ▁Jonathan ▁Horn b lower ▁J nr ▁also ▁started ▁to ▁build ▁engines ▁about ▁the ▁same ▁time . ▁O thers ▁began ▁to ▁modify ▁New com en ▁engines ▁by ▁adding ▁a ▁cond enser , ▁and ▁the ▁mine ▁own ers ▁in ▁Corn wall ▁became ▁convinced ▁that ▁W att ' s ▁pat ent ▁could ▁not ▁be ▁enfor ced . ▁They ▁started ▁to ▁with hold ▁pay ments ▁due ▁to ▁B oul ton ▁and ▁W att , ▁which ▁by ▁ 1 7 9 5 ▁had ▁fallen . ▁Of ▁the ▁total ▁£ 2 1 , 0 0 0 ▁( equ ivalent ▁to ▁£ ▁as ▁of ▁) ▁ow ed , ▁only ▁£ 2 , 5 0 0 ▁had ▁been ▁received . ▁W att ▁was ▁forced ▁to ▁go ▁to ▁court ▁to ▁en force ▁his ▁claims . ▁ ▁He ▁first ▁su ed ▁Bull ▁in ▁ 1 7 9 3 . ▁The ▁j ury ▁found ▁for ▁W att , ▁but ▁the ▁question ▁of ▁whether ▁or ▁not ▁the ▁original ▁specification ▁of ▁the ▁pat ent ▁was ▁valid ▁was ▁left ▁to ▁another ▁trial . ▁In ▁the ▁meant ime , ▁inj unction s ▁were ▁issued ▁against ▁the ▁in fr ingers , ▁forcing ▁their ▁pay ments ▁of ▁the ▁roy alt ies ▁to ▁be ▁placed ▁in ▁esc row . ▁The ▁trial ▁on ▁determ ining ▁the ▁valid ity ▁of ▁the ▁specific ations ▁which ▁was ▁held ▁in ▁the ▁following ▁year ▁was ▁incon clus ive , ▁but ▁the ▁inj unction s ▁remained