. A lake tour to picturesque Mackinac; historical and descriptive . veryutensil and piece of machinery in the engine room, and the engineeron duty will cheerfully explain. The two columns are steam pipes. The one on the left containssteam, as it comes direct from the boiler, and is held there under fullpressure by valves in the two steam chests, one above and one below,until wanted by the cylinder, a large, round body just behind the steamchests, in which a piston works up and down. 18 By Steamers, from Cleveland and Detroit. The long rod on the left opens the upper valve, admitting steam toth
. A lake tour to picturesque Mackinac; historical and descriptive . veryutensil and piece of machinery in the engine room, and the engineeron duty will cheerfully explain. The two columns are steam pipes. The one on the left containssteam, as it comes direct from the boiler, and is held there under fullpressure by valves in the two steam chests, one above and one below,until wanted by the cylinder, a large, round body just behind the steamchests, in which a piston works up and down. 18 By Steamers, from Cleveland and Detroit. The long rod on the left opens the upper valve, admitting steam tothe cylinder, which forces the piston down, while the short rod opensthe lower valve, admitting steam under the piston, which forces it up and down working of the piston moves all the is first given by opening the valves by hand a few times afterwhich an eccentric arm from the mam shaft does the work; automati-cally At every full stroke of the piston the paddle wheels turn halfround. The piston is connected by rods to one end of the walking. Light House, Cleveland, O. beam, the other end of which is connected by rods with a crank on themain shaft, running across the steamer. With each end of the shaft apaddle wheel is connected. The rods on the right open the valves from the cylinder, just as thepiston finishes the stroke, and the steam which was but a moment 19 A Lake Tour to Picturesque Mackinac before let in from the left column to move the piston, now rushes outinto the right hand column, to give the piston a clear space to workback again as soon as steam is let in on the other side to drive is thus obtained by steam forcing the piston down from thetop, then up from the bottom. Each time the piston moves the lengthof the cylinder, the steam which moved it must be gotten out of theway before it can move back again. Under the right hand column is the condenser, containing a sprayof cold water, which strikes the steam as it enters, condensing i
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Keywords: ., bookauthordetroita, bookcentury1800, bookdecade1880, bookyear1884
