Union Switch (69 results)

Condition: New.

Condition: New.

Paperback or Softback. Condition: New. Bulletin, Issues 50-105. Book.

Paperback or Softback. Condition: New. Bulletin, Issues 12-47. Book.

Condition: As New. Unread book in perfect condition.

Condition: As New. Unread book in perfect condition.

PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condition: Very Good. The covers have some mild overall wrinkling, a little edgewear. Contents are clean and unmarked. Original tape bound spine, about 9 1/2 by12 with charts fold out double. 2508X, accompanies serial 2508, automatic train control. ; 0.1 x 12 x 9.5 Inches; 9 Charts of the Pneumatic Equipment of the Union Switch & Signal Co's. Automatic Train Control Systems.…

PF. Condition: New.

PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

Hardback or Cased Book. Condition: New. A Catalogue of the Devices and Their Parts. Book.

Hardback or Cased Book. Condition: New. Bulletin, Issues 12-47. Book.

PF. Condition: New.

HRD. Condition: New. New Book. Shipped from UK. Established seller since 2000.

PF. Condition: New.

Soft cover. Condition: Very Good. Softcover. Stiff paper wraps, stapled at the fold. Front cover depicts a black-and-white illustration of a nine-cylinder rotary aircraft engine manufactured at the company's drop forge plant. Measures 6" x 9", 22 pages, in very good condition. Pages 3-16 contain listings for various pieces of equipment manufactured by the company's drop forge department: gears, crankshafts, axles, levers, brake shoes, and more. Listings contain a black-and-white photograph of the part or parts in question, accompanied by a short description giving specifications and physical dimensions. Page 17 lists the company's conditions of sale. Pages 18-19 contain a partial listing of the various kinds of parts that the company can forge and has forged. Page 20 contains statistics about the Pittsburgh District, including population, land valuation, net debt, miles of roads, and more. Page 21 contains a listing of automobile statistics for the year 1919, both production statistics and consumption statistics. Covers are rubbed and smudged. Only minor wear and tear to edges and corners. Some writing in ink on front cover. Stamps on front cover indicate that this catalogue came from a catalogue library, including one with date (January 15, 1921) indicating date of receipt by the library. Pages are clean and unmarked. The Union Switch & Signal Company, a manufacturer of signaling equipment, was based in Swissvale, Pennsylvania. $25.…

HRD. Condition: New. New Book. Shipped from UK. Established seller since 2000.

Condition: New.

Condition: New.

Condition: As New. Unread book in perfect condition.

Condition: As New. Unread book in perfect condition.

Soft cover. Condition: Very Good. Softcover. Stiff paper wraps, stapled at the fold. Front cover contains a black-and-white illustration of a speeding train, along with a black-and-white photographic inset of a railway signalman. Measures 6" x 9", 51 pages, in very good condition. Illustrated with three-color maps and black-and-white drawings, photographs and diagrams. Pages 5-20 contain a history of the continuous system of cab signaling, along with various advantages of its use and information about the equipment required for its use. Between pages 20 and 21 is a two-page aerial photograph of a horseshoe-shaped curve in a railroad line in Pennsylvania on which the company's signaling system is used. Pages 21-24 contain information and specifications on the circuitry that powers the system. A section of maps of various railroad lines follows page 24. Three-color maps are accompanied by black-and-white photographic insets of the signaling systems that they use, along with some specifications about those signaling systems. Pages 46-51 contain photographs of the signals used in the signaling system, along with a listing of which railroad lines use the system. Covers have faded slightly at spine, and show some rubbing. Light wear and tear to edges and corners. Cataloging number is written in ink on front cover, and is accompanied by the year "1930" written in pencil. Pages are clean and unmarked. The Union Switch & Signal Company, a manufacturer of railroad signaling equipment, was based in Swissvale, Pennsylvania. $35.…

Soft cover. Condition: Very Good. Softcover. Stiff paper wraps, stapled at the fold. Front cover contains a black-and-white illustration of a speeding train, along with a black-and-white photographic inset of a railway signalman. Measures 6" x 9", 51 pages, in very good condition. Illustrated with three-color maps and black-and-white drawings, photographs and diagrams. Pages 5-20 contain a history of the continuous system of cab signaling, along with various advantages of its use and information about the equipment required for its use. Between pages 20 and 21 is a two-page aerial photograph of a horseshoe-shaped curve in a railroad line in Pennsylvania on which the company's signaling system is used. Pages 21-24 contain information and specifications on the circuitry that powers the system. A section of maps of various railroad lines follows page 24. Three-color maps are accompanied by black-and-white photographic insets of the signaling systems that they use, along with some specifications about those signaling systems. Pages 46-51 contain photographs of the signals used in the signaling system, along with a listing of which railroad lines use the system. Covers have faded at spine, and are slightly scuffed. Light wear and tear to edges and corners. Stamps on front cover indicate that this catalogue came from a catalogue library, including one with date (December 14, 1935) indicating date of receipt by the library. Pages are clean and unmarked. The Union Switch & Signal Company, a manufacturer of railway signaling systems, was based in Swissvale, Pennsylvania. $35.…

Taschenbuch. Condition: Neu. Neuware - This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the 'public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.…

Taschenbuch. Condition: Neu. Neuware - Produced by the Union Switch and Signal Company, these bulletins are a valuable resource for railway signal engineers and enthusiasts interested in the history of railway signaling. Covering a wide variety of topics, from interlocking machines to switch locks, this series is recommended for those interested in historical railway technology.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the 'public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. …

Taschenbuch. Condition: Neu. Neuware - This bulletin series offers readers valuable insight into signal systems, along with the operational processes associated with them. It is recommended for signal engineers and enthusiasts interested in the historical development of railway signaling.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the 'public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.…

Buch. Condition: Neu. Neuware - This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the 'public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.…

Buch. Condition: Neu. Neuware - This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the 'public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.…

Buch. Condition: Neu. Neuware - This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.…

Paperback. Condition: New. Print on Demand. This book documents the extensive employment of interlocking and block signaling systems on American railroads since their introduction. The author describes the devices and machinery used to improve safety at rail crossings and on tracks, covering the system's components, functions, and evolution since the late 19th century. Through exploration of patents, technical details, and illustrations, this book explores the shift in rail safety practices, offering a comprehensive record of the technology's impact on the rail industry in the United States. 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.…