The boys' book of engine-building; . s werebad, Richard Trevithick, of England, built alocomotive in 1804 to run on a track. Beingfearful that the wheels would slip on the smoothsurface of the rails he used a cog wheel thatmeshed with a cog rail. Matthew Murray, also of England, built thenext locomotive in 1811. It had two uprightcylinders set on top of the boiler; the piston rodswere connected with a crankshaft, and a wheelon this turned the driving wheels. The first en-gine to use a fire tube boiler was made in 1813by William Hedley, likewise of England, and hisengine was also the first to m
The boys' book of engine-building; . s werebad, Richard Trevithick, of England, built alocomotive in 1804 to run on a track. Beingfearful that the wheels would slip on the smoothsurface of the rails he used a cog wheel thatmeshed with a cog rail. Matthew Murray, also of England, built thenext locomotive in 1811. It had two uprightcylinders set on top of the boiler; the piston rodswere connected with a crankshaft, and a wheelon this turned the driving wheels. The first en-gine to use a fire tube boiler was made in 1813by William Hedley, likewise of England, and hisengine was also the first to make the spent steamfrom the cylinders exhaust through the smoke-stack to give the furnace a good draft. It was George Stephenson—he was of Englandtoo—who put the finishing touches on the loco- The First Engines 17 motive in 1814. This he did by connecting thepiston rods directly to the crank pins on thedriving wheels and he linked the front and backdriving wheels with a coupling rod. Stephenson built the Rocket in 1829, see Fig. 10. Stephensons Locomotive, The Rocket 10, and in a test on the Liverpool and ManchesterRailway it ran away from its competitors, all ofwhich were driven by sprocket wheels and not only won the prize, but fixed the designfor locomotives from that day to this. The Modern Steam Turbine.—And now wecome back to the place where we started from 18 The Boys9 Book of Engine-Building 2000 years ago, which goes to prove the truth ofthe saying, The first shall be last/ Engineersof our own time have perfected the reactionengine of Hero and the impulse engine of Brancaand by combining the principles of both theyhave made an engine which uses far less steamand is much smaller for the horse power devel-oped than the best reciprocating engines now inuse. It is not called a steam engine, however,but a steam turbine if you please, though it is anengine just the same. Though other men had built steam turbines,it was Gustav De Laval, of Sweden, who, i
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