. Factory and industrial management . llierynear Leeds, was notable as having as its means of propulsion a cog-wheel fitting into a rack on one side of the track, the idea being thatthe tractional adherence of the driving-wheels to the rail was not suffi-cient. Hedleys Puffing Billy of 1813 was another moderatelysuccessful locomotive,and it is curious tonote that it was used,more or less, until1862, when it wasgivCn an honorable re-tirement in the Britishpatent-office museum. One of the oddideas of early locomo-tive building was thesupposed necessity of , T J EVANSS LOCOMOTIVE, 1786. vertical
. Factory and industrial management . llierynear Leeds, was notable as having as its means of propulsion a cog-wheel fitting into a rack on one side of the track, the idea being thatthe tractional adherence of the driving-wheels to the rail was not suffi-cient. Hedleys Puffing Billy of 1813 was another moderatelysuccessful locomotive,and it is curious tonote that it was used,more or less, until1862, when it wasgivCn an honorable re-tirement in the Britishpatent-office museum. One of the oddideas of early locomo-tive building was thesupposed necessity of , T J EVANSS LOCOMOTIVE, 1786. vertical cylinders, which nearly all the mechanicians of the time regarded as of valuein pressing the wheels down upon the track, an idea quite analogousto that of lifting ones self by ones boot-straps. George Stephenson retained this idea in an engine which he builtin company with Dodd, in 1815, and in several later ones ; indeed, itwas modified in the famous Rocket only so far as to tilt thecylinders at an angle of about forty-five 790 PIONEER LOCOMOTIVES What has beenregarded by someas the birth-day ofthe railway locomo-tive occurred onSeptember 27,1825, with Stephen-son as the father ofthe event. TheStockton & Dar-lington railway hadbeen built, and,through his persist-ent importunities,laid with iron, in-stead of wooden, rails
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