ing ▁bre ach ▁of ▁contract ▁and ▁in fr ing ement ▁because ▁as ▁owner ▁of ▁the ▁Best ▁Man ufact uring ▁Company , ▁he ▁believed ▁he ▁also ▁owned ▁the ▁" Best " ▁name . ▁Hol t ▁did ▁not ▁prev ail ▁and ▁Best ▁continued ▁to ▁produce ▁tra ctors ▁that ▁directly ▁competed ▁with ▁Hol t ' s ▁models . ▁ ▁Hol t ▁continued ▁to ▁innov ate ▁and ▁worked ▁to ▁build ▁a ▁tra ctor ▁that ▁could ▁perform ▁rug ged ▁tasks ▁yet ▁was ▁not ▁itself ▁heavy . ▁He ▁fitted ▁adjust able ▁bl ades ▁onto ▁his ▁tra ctors ▁and ▁h ired ▁them ▁out ▁to ▁grade ▁roads ▁and ▁move ▁soil ▁and ▁rock ▁for ▁construction ▁purposes . ▁By ▁ 1 9 1 6 , ▁Hol t ▁had ▁sold ▁over ▁ 2 , 0 0 0 ▁tra ctors ▁world wide . ▁ ▁Early ▁military ▁uses ▁▁ ▁In ▁England , ▁starting ▁in ▁ 1 9 0 5 , ▁ ▁David ▁Roberts ▁of ▁Richard ▁Horn s by ▁& ▁S ons ▁had ▁attempted ▁to ▁interest ▁British ▁military ▁officials ▁in ▁a ▁track ed ▁vehicle , ▁but ▁failed . ▁Hol t ▁bought ▁the ▁pat ents ▁related ▁to ▁the ▁" chain ▁track " ▁track - type ▁tra ctor ▁from ▁Richard ▁Horn s by ▁& ▁S ons ▁in ▁ 1 9 1 2 ▁for ▁£ 4 , 0 0 0 ▁( al most ▁£ 4 0 0 , 0 0 0 ▁at ▁ 2 0 1 2 ▁value ). ▁Un like ▁the ▁Hol t ▁tra ctor , ▁which ▁had ▁a ▁ste er able ▁till er ▁wheel ▁in ▁front ▁of ▁the