The Block System of Signaling on American Railroads: The Methods (Classic Reprint)

The block system is now in use on over 25,000 miles of railroad in A merica, and it seems likely that this mileage will be steadily increased. Ten years ago, when American Practice in Block Signaling was issued, only about one-tenth this number of miles of railroad was worked in this manner; and but few railroad companies appeared to deem blok signals necessary. Now, over fifty roads have adopted the system for at least a short length of line, and 27 of them have it in use on over 100 miles each. This fact that prominent companies all over the country now fully appreciate thie value of the space-interval principle, and are putting it in use on their busiest lines is the most important one to be noted in this revised edition of American Practice. But the numerous modifications and improvements in electrical and other machinery used in block signaling, which have been made since 1890 are of at least equal interest; and the bulk of the book is, of course, taken up with these. The matter has been entirely rewritten. Nearly or quite every mechanical or electrical device described in the former work has been improved or superseded, and the illustrations now given are all new. Illuminated semaphores have made no progress and are omitted.
(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 Series utilizes the latest technology to regenerate facsimiles of historically important writings. Careful attention has been made to accurately preserve the original format of each page whilst digitally enhancing the aged text. Read books online for free at www.forgottenbooks.org