Reports of the Massachusetts commissioners to the exposition at Vienna, 1873With special reports prepared for the Commission . D. REPORT OF MR. ROBERT B. LINES. 453 is called the Sifflet electro-automateur,^ or Electro-automaticwhistle, of Messrs. Lartigue & Forest. Its object is, byblowing the whistle of a coming train, to warn it of theposition of a switch or optical signal which it is approaching,but which, by reason of fog, heavy snow, or even rain, or theextinction of a lamp at night, cannot be seen by the belongs, therefore, to the class of signals between stationsand trains
Reports of the Massachusetts commissioners to the exposition at Vienna, 1873With special reports prepared for the Commission . D. REPORT OF MR. ROBERT B. LINES. 453 is called the Sifflet electro-automateur,^ or Electro-automaticwhistle, of Messrs. Lartigue & Forest. Its object is, byblowing the whistle of a coming train, to warn it of theposition of a switch or optical signal which it is approaching,but which, by reason of fog, heavy snow, or even rain, or theextinction of a lamp at night, cannot be seen by the belongs, therefore, to the class of signals between stationsand trains in motion, to which I have alluded, and is a stepin advance of all the apparatus just described in Group II,which give notice of danger, it is true, but whose warningsmay, by reason of the distance of the switch or semaphorefrom the station, arrive too late. The invention consists of two essential parts, the first beingthe means by which contact with the train is established, andthe second the apparatus employed to sound the in this particular instrument the two are coupledtogether, it is evident that the
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherbosto, bookyear1875
