Excerpt from Railway Signaling in Theory and Practice
In the ensuing pages, it has not been my intention to treat the subject of railway signaling as practiced in America in anything but an elementary way. Even the elements are not always readily grasped by persons who have not had some practical railway experience, and are at least somewhat familiar with the ordinary methods pursued in constructing tracks, moving trains and in the nomenclature used by those whose daily life is spent in actual railway operation. My object has been to supply a want which I myself felt sorely at the beginning of my career as a Signal Engineer - that of an elementary text book bearing on the subject. The matter was originally compiled with a view to publishing it serially, and indeed nearly one-half of it has already appeared in that way. Although I have taken as much time as it was possible for me to spare from a busy life to arrange and revise the matter in proper form for its present appearance, I cannot but feel that I may have left a great deal yet to be done. I can only say that I have tried to do my best and that I hope the book will be well enough received to give me a chance to make any revisions which may appear advisable in a later edition. I have taken the liberty fully to express my own opinions where I have thought necessary, and have always endeavored to impress on the reader's mind that they were such so that he could take them for what they are worth. After more than eighteen years spent in the operat ing department of a large railroad, and nearly seven years as its Signal Engineer, I cannot but feel that these opinions must be worth something now if they ever will be. The reader must judge for himself. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
This volume is produced from digital images created through the University of Michigan University Library's preservation reformatting program. The Library seeks to preserve the intellectual content of items in a manner that facilitates and promotes a variety of uses. The digital reformatting process results in an electronic version of the text that can both be accessed online and used to create new print copies. This book and thousands of others can be found in the digital collections of the University of Michigan Library. The University Library also understands and values the utility of print, and makes reprints available through its Scholarly Publishing Office.
Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.
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Paperback. Etat : New. Print on Demand. This book delves into the fascinating world of railway signaling, a crucial element in the safe and efficient operation of trains. The author, a veteran of the railway industry, provides a comprehensive guide to the subject, drawing upon over two decades of experience as a signal engineer. He masterfully breaks down complex technical concepts into easily digestible language, making this book an ideal resource for those new to the field as well as those seeking a deeper understanding of signal engineering. The author explores the evolution of signaling technology, comparing and contrasting manual and automatic systems, and examining the development of interlocking mechanisms that ensure the safe passage of trains through switches, crossings, and junctions. He provides detailed explanations of various signal types, including semaphores, disc signals, and switch targets, as well as their respective uses and limitations. The book's insightful and clear explanations of the principles behind railroad signaling provide a valuable resource for anyone interested in the history and advancement of this critical aspect of railway safety. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. N° de réf. du vendeur 9781332065806_0
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PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000. N° de réf. du vendeur LW-9781332065806
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