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Railway Signaling: A Comprehensive Treatise on Modern Methods of Railway Signaling, Covering Principles of Operation and Types of Apparatus (Classic Reprint)
The advantages derived therefrom are safety, facility of operation and saving in cost of manual labor employed. It is the purpose of this article to give, as briefly as possible, a general outline of what is accomplished by interlocking, the manner in which the work is done, and the-construction of a particular type of machine. TYPES OF MACHINES As has...
The advantages derived therefrom are safety, facility of operation and saving in cost of manual labor employed. It is the purpose of this article to give, as briefly as possible, a general outline of what is accomplished by interlocking, the manner in which the work is done, and the-construction of a particular type of machine. TYPES OF MACHINES As has been intimated, various types are in use, and they may be divided into classes as follows: Mechanical, hydro-pneumatic, electro-pneumatic, pneumatic, and electric. Each style of machine is known by the kind of power utilized to perform the various functions for which it was designed, and as all were designed for the purpose of doing a certain kind of work, a description of the original (mechanical) machine, will give not only the method of operation peculiar to itself, but also a general idea of the principle of interlocking as used in all machines. An interlocking machine may be small in size, that is, may have but few levers, sufficient to properly protect a single track grade crossing; or it may be to take care of a crossover between the tracks of a double track road; or to protect a junction point where two single track roads converge. Or, on the other hand, the machine may be a large one, with many levers, sufficient to properly handle a grade crossing where several roads cross other roads, and perhaps having interchange tracks; or, it may be for handling a large classification yard, a large passenger terminal, or a combination of any of the above. Therefore, the size of machine depends entirely upon the arrangement of tracks at the point to be protected.(Typographical errors above are due to OCR software and don't occur in the book.)About the Publisher Forgotten Books is a publisher of historical writings, such as: Philosophy, Classics, Science, Religion, History, Folklore and Mythology.Forgotten Books' Classic Reprint Serie
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