Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . lockingbmke attachment fortlio wheels, to preventvibration while themachiue is running. The Baxter portableengine is mounted ontop of an upright boil-er, and the cylinder,which is also vertical,is within the steam-dome, whereby it iskept hot, preventingcondensation of steamin the cylinder. InFig. 3898, the upperview shows the ar-rangement of parts ofthe engine,
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . lockingbmke attachment fortlio wheels, to preventvibration while themachiue is running. The Baxter portableengine is mounted ontop of an upright boil-er, and the cylinder,which is also vertical,is within the steam-dome, whereby it iskept hot, preventingcondensation of steamin the cylinder. InFig. 3898, the upperview shows the ar-rangement of parts ofthe engine, while thelower cut is a sectionalviaw, showing the po-sition of the cylinder^piston, steam - chest,valves, and shows also how theinterior of the boiler isbraced, so as to give itthe requisite strength;the position of thegrate and combustion-chamber, and the pipeby which the heatedwater from the water-bottom is forced intothe boiler. Owing to the com-paratively large diam-eter and the placingof the cylinder belowthe top of the boiler,the center of gravityof the whole machineis brought down low,and shaking of thetop frame, on whichthe driving-wheel ishung, is to a great ex-tent prevented. The best reported Fig. BdJrltr ForCnhle Engine. duty of the English portable steam-engine was a 7 horse-powerengine built by llorusby, in which 36 pounds of coal were usedin getting up steam ; the consumption was 37 pounds per hour,being pounds per horse-power per hour, and 370 poundsper day of 10 hours. The Baxter engine has been known todevelop 1 horse-power for each 3i pounds of coal per hour. In Fig. 3S99, b d are forms of portable engines mounted oncarriages wbicji can be moved from place to place. The engine Fig. 3899.
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