. Official proceedings . y 13, had a horizontal boiler with a fire tube inside, two vertical,double acting cylinders and walking beams connected by means ofrods to crank pins in each driving wheel of the rear axle coupledby side rods to the front wheels. The locomotive was of the 0-4-0type. It weighed 7 tons instead of 3 as it had been specified. In August, 1829, the locomotive was completely assembled 85 and Horatio Allen took it out for several rides near Ilonesdale,but it could not be used permanently on the road on account ofits excessive weight. It was later dismantled and is now
. Official proceedings . y 13, had a horizontal boiler with a fire tube inside, two vertical,double acting cylinders and walking beams connected by means ofrods to crank pins in each driving wheel of the rear axle coupledby side rods to the front wheels. The locomotive was of the 0-4-0type. It weighed 7 tons instead of 3 as it had been specified. In August, 1829, the locomotive was completely assembled 85 and Horatio Allen took it out for several rides near Ilonesdale,but it could not be used permanently on the road on account ofits excessive weight. It was later dismantled and is now pre-served at the Smithsonian Institute at Washington. About that time Peter Cooper, a well-known merchant inNew York, started building a locomotive with the help of Johnsonand a young apprentice by the name of Milholland. It was theTom Thuml) (Fig. 4)—a small locomotive with a vertical boilerapproximately 20 in diameter and 5 ft. high, with vertical tubesmade of gun barrels; it had one vertical, double-acting cylinder. Fig. 4—Coopers Tom Thumb. 33/2 bore X 14^ stroke, coupled to a crank shaft connected bymeans of gears to the rear axle. The locomotive was of the2-2-0 type. The draft was produced by a fan driven from theleading axle. The chassis was that of a small handcar; thewhole locomotive weighed about a ton and had an output of sev-eral horsepower. Small as the locomotive was, the consequences were of greatimportance. On May 22, 1830, the first division of the Baltimore& Ohio Railroad, from Baltimore to EHicotts Mills, 13 mileslong, was opened for transportation and the cars, as the case wason other roads, were moved by horses and mules. On August28, 1830, a little over ten months after the Rainhill competition,a trial with the Tom Thumb was made. The tests were very 86 successful and evoked great interest among directors of the Winans, Assistant Engineer of the Raih-oad, said on thesame day that the experiment with the Tom Thumb estabhshedbeyond a doubt the
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