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Note: This is a sub-section of Hackworth and Downing
Timothy Hackworth also tried the short stroke engine. The Arrow, built for the Stockton and Darlington Railway in 1837, at his works at Shildon, had 9in. piston stroke only. The late Joseph Tomlinson gave the diameter of the cylinders a 17in., but another, though probably incorrect, official record stated 21in. The Arrow had been preceded in 1836 by a locomotive built by Hackworth for Russia, also with 17in. diameter by 9in. stroke cylinders. Both engines were of the 2-2-2 type with 5ft. driving wheels, outside frames and inside horizontal cylinders, following the lines of Stephenson's patent engine of 1833. They were also the first engines built at Shildon with multilubular boilers and inside fire-boxes of the ordinary type.