The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . tives were tried on the elevatedrailroads of New York City, but failed to supplant thesteam-locomotives. The Thomson-Houston and other companies introducedsmall electric locomotives about 1891 for haulage in operate by overhead trolleys, and have a moderatesale. The J. J. Heilmann electric locomotive is being tried inFrance the present year (1895), and gives great promiseof success. It is really an electric power plant on of producing the electric energy at a
The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . tives were tried on the elevatedrailroads of New York City, but failed to supplant thesteam-locomotives. The Thomson-Houston and other companies introducedsmall electric locomotives about 1891 for haulage in operate by overhead trolleys, and have a moderatesale. The J. J. Heilmann electric locomotive is being tried inFrance the present year (1895), and gives great promiseof success. It is really an electric power plant on of producing the electric energy at a station, andsending it out by overhead wires to tiie cars, the entiremechanism is carried as a locomotive. The first one builtwas of small power (six hundred horse-), though fifty feet 190 WONDERS OF MODERN MECHANISM. in length. As will be seen from the illustration, there aresixteen wheels, bearing a platform of steel girders. Thesmoke-stack is at the rear end, strange to say, the cab withits pointed end being forward. The steam-engine andboiler are much like those of any steam-locomotive. They Fig. THE HEILMANN ELECTRIC are of the Brown type, and as well made as it is possibleto build a modern compound condensing engine, and, beingdirectly connected with the large dynamo, which occupiesthe greater portion of the cab, there can be no lost powerfrom friction between the two machines. A switchboardstands in front of the driver, with controlling levers oneither hand. Each of the axles bears a rotary electricmotor, so that all of the wheels are drivers, presentingless chance of slipping on the track than with the ordinarysteam-locomotive, part of whose weight rests on truck-wheels. As each axle of the Heilmann locomotive isindependent, there is no difficulty in turning short curvesat good speed. The cars to be drawn by this locomotivemay also bear electric motors on the axles, to which thecurrent will be conveyed by wires from the dynamo onthe locomotive. The t
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Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectmechanicalengi
