. Bulletin - United States National Museum. Science. 70 BULLETIN 119, U. S. NATIONAL MUSEUM. and upon the hood rests the smoke-stack. The furnace and its grate are circular and are placed inside of the circle formed by the boiler tubes and thus are inclosed by them. The grate rests on the project- ing ledge of the lower part of the boiler. A single horizontal cylinder with valve chest on top is situated alongside the boiler and transmits its power to a crank shaft on which is mounted a gear wheel. This gear engages a second and larger gear vertically be- neath it, which in turn meshes into a r
. Bulletin - United States National Museum. Science. 70 BULLETIN 119, U. S. NATIONAL MUSEUM. and upon the hood rests the smoke-stack. The furnace and its grate are circular and are placed inside of the circle formed by the boiler tubes and thus are inclosed by them. The grate rests on the project- ing ledge of the lower part of the boiler. A single horizontal cylinder with valve chest on top is situated alongside the boiler and transmits its power to a crank shaft on which is mounted a gear wheel. This gear engages a second and larger gear vertically be- neath it, which in turn meshes into a rack rail situated midway between the rails and about on a level with them. Four vertical posts extending downward from the floor of the truck near each. FIG. 30. — .STEVENS' EXPElilJIEXTAL LOCOMOTIVE, 1825. corner and terminating in rollers in contact with the inner face of the rails, guide the truck on the track. The locomotive was operated by Stevens on a circular track at Hoboken, Ncav Jersey, and carried six people at a speed of over twelve miles an hour. Cat. No. 181,241 Original Tubular Boiler Designed and Patented by John Stevens in 1803, and Used on His Experimental Locomotive in 1825. Deposited by the Stevens Institute of Technology. The boiler consists of twenty vertical tubes connecting the water chamber at the bottom with the steam chamber at the top. The out- side diameter of the circle formed by the tubes is 12 inches, each tube being 40| inches long by 1^ inches in external Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
