. Electric railway gazette . hemachine than has yet been obtained by original apparatus was on exhibition at theWorlds Columbian Exposition in the space oc-cupied by the Westinghouse exhibit, in Electric-ity building, but was shown as the personal ex-hibit of Nikola Tesla. In this apparatusthe generator is an annular electromagnetwith consequent poles, but is separated into twoparts, being divided through the center. Thetwo magnets thus produced are separated asufficient distance to admit of a thin, bar-likearmature being introduced which contains re-cessed spaces into which flat coil


. Electric railway gazette . hemachine than has yet been obtained by original apparatus was on exhibition at theWorlds Columbian Exposition in the space oc-cupied by the Westinghouse exhibit, in Electric-ity building, but was shown as the personal ex-hibit of Nikola Tesla. In this apparatusthe generator is an annular electromagnetwith consequent poles, but is separated into twoparts, being divided through the center. Thetwo magnets thus produced are separated asufficient distance to admit of a thin, bar-likearmature being introduced which contains re-cessed spaces into which flat coils of wire are arrangement is such that the engine foroperating the generator is placed in the centerbetween the magnets; rubber tubes beingused respectively for live and exhaust was the device as originally produced andused In the early experiments which fully demon-strated the practicability of the apparatus. The object of such device was to enable the ex-perimenter to study the nature and affects of al-. by B, the inlet ports being shown at C C and theexhaust passages at D D. The engine has no valves, properly speaking,the inlet and exhaust ports being connected tothe steam supply and to the exhaust by channelsin the piston, thus making the piston serve thepurpose of steam valves, as is the case in somekinds of steam pumps; but in this engine theidea is carried out in a more complete manner, by which the piston can be caused to make any de-sired number of strokes per minute. The portsare shown in outline on the piston by the lettersE and F. Steam enters the cylinder through thepipes CCand makes exit through the exhaustopenings D D. The engine as a whole is quite simple and con-tains no delicate parts that are constantly liableto get out of adjustment through the wear inci-dent to constant operation, no matter how greatthe duty it may be required to perform. It willbe noticed that full pressure of steam is applieddirectly to the piston at all times, as ther


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Keywords: ., bookcentury1800, bookdecade1890, bookidelectricrail, bookyear1895