▁most ▁famous ▁steam ▁locomot ive ▁engine ers ▁of ▁the ▁ 1 9 th ▁century , ▁working ▁princip ally ▁for ▁L B & SC R . ▁Design ed ▁some ▁of ▁the ▁most ▁famous ▁and ▁longest ▁lived ▁steam ▁locomot ives ▁of ▁his ▁era ▁ ▁Patrick ▁St ir ling , ▁C ME ▁of ▁the ▁Great ▁Northern ▁Railway ▁where ▁his ▁famous ▁ 8   ft ▁singles ▁( 4 - 2 - 2 ' s ) ▁were ▁the ▁principal ▁express ▁engines ▁for ▁many ▁years , ▁ach ieving ▁world - wide ▁fame ▁ ▁Richard ▁Tre v ith ick , ▁" father ▁of ▁the ▁locomot ive ", ▁built ▁first ▁practical ▁steam ▁locomot ive ▁at ▁Pen yd ar ran ▁in ▁Wales ▁in ▁ 1 8 0 4 ▁ ▁Charles ▁Black er ▁V ign oles , ▁invent or ▁of ▁the ▁V ign oles ▁rail ▁profile ▁ ▁James ▁W att , ▁improvements ▁to ▁the ▁steam ▁engine ▁ ▁Francis ▁Web b , ▁C ME ▁of ▁the ▁London ▁& ▁North ▁Western ▁Railway , ▁a ▁pione er ▁in ▁the ▁use ▁of ▁steel ▁for ▁locomot ives ▁ ▁William ▁Wilson , ▁first ▁locomot ive ▁driver ▁in ▁Germany ▁ ▁United ▁States ▁▁ ▁Hor atio ▁Allen , ▁designed ▁world ' s ▁first ▁art ic ulated ▁locomot ive ▁in ▁ 1 8 3 2 ▁ ▁Matth ias ▁William ▁Bald win , ▁Bald win ▁Lo comot ive ▁Works , ▁the ▁world ' s ▁largest ▁steam ▁locomot ive ▁manufact urer ▁ ▁Peter ▁Cooper , ▁first ▁locomot ive ▁built ▁in ▁the ▁US ▁ ▁Charles ▁F . ▁K etter ing , ▁developed ▁high - speed