Signal co (68 resultados)

Condición: New.

Condición: New.

Spiral. Condición: Good. There is some wear to the cover. The book has wear on the corners. There may be some marks in or on the book. Books are stored on a bookshelf in A/C. They are in a dark room and are well maintained. If you have any questions or concerns about this book please contact me. There is some wear to the cover. The book has wear on the corners. There may be some marks in or on the book. Books are stored on a bookshelf in A/C. They are in a dark room and are well maintained. If you have any questions or concerns about this book please contact me.Free shipping in the United States via media mail. Publisher: Gateway. Author: 312Th Signal Co. Binding: Spiral. Language: English. …

Condición: As New. Unread book in perfect condition.

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

Paperback. Condición: 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.…

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

Soft cover. Condición: Good. From the Union Smith & Signal Co., Swissvale, PA, Bulletin 147, February, 1931, for Universal Clockwork Time Release. The 6 by 9 inch softcover catalog is 10 pages and in good condition. The catalog is composed of a thorough description of the time release and with drawings of specific parts to illustrate the operation. The tan wraps are decorated with blue, there are no folds or tears. The inside pages are clean and without markings.…

Condición: New.

Condición: As New. Unread book in perfect condition.

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

Soft cover. Condición: Very Good. 1st Edition. 20 pages, 150g. Not dated but looks c.1949. Stapled card covers a little rubbed to spine area, Very Good. Illustrated with b/w photographs and track signalling plan.

Soft cover. Condición: 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.…

Soft cover. Condición: Very Good. 1st Edition. 16 pages, 115g. Not dated but looks c.1949. Stapled card covers a little rubbed to spine area, Very Good. Illustrated with b/w & 1 colour photographs and track signalling plan.

Soft cover. Condición: Near V.G. 1st Edition. 20 pages, 170g. Not dated but looks c.1949. Stapled card covers a little rubbed to spine area, and rubbed and marked to covers, Near Very Good. Illustrated with b/w photographs and large fold-out track signalling plan.

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

Soft cover. Condición: Very Good. 1st Edition. 22 pages + 4 page Train Describer Equipment broacher loosely inserted. 135g. Stapled card covers Very Good. Illustrated with b/w photographs and fold-out track plan to rear.

Soft cover. Condición: Very Good. 20 pages, 115g. Stapled card covers a little rubbed and lightly creased to spine, Very Good with the contents and staples tight and clean. Illustrated with b/w photographs.

Soft cover. Condición: Very Good. 1st Edition. 12 pages, 100g. Not dated but c.1949. Stapled card covers a little rubbed to spine area, Very Good. Illustrated with b/w photographs and track signalling plan.

Soft cover. Condición: Fine. Reprint. Not dated but post 1938. 8 pages, 45g. Stapled card covers FINE. Illustrated with b/w photographs and maps. An interesting example of colour-light signalling applied to a suburban line including busy level crossings. Rare item.

Soft cover. Condición: Near-Fine. No Jacket. Presumed 1st. Pub by General Railway Signal Co., 1937, NAP, presumed 1st Edition. NOT exlib. near-Fine of better cond. softcover in black, blue & gilt dec wraps. Slight spine-lean. Looks like it's never been read. Illustrated in b&w. 165pp + excellent cond. foldouts. Square, straight, tight, bright & clean, overall NF or better cond. Same or next day shipping. Please email any questions.…

Soft cover. Condición: 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. Condición: 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.…

Hardcover. Condición: Fair. No Dustjacket. Later Edition. ISBN . Three Ring White Binder. Three Hole Punched Training Study Guide. Tight sound reading copy only due to notes throughout text. No Signature.

Paperback. Condición: Good. 21 monochrome photographs most approx 8" x 6" of mostly unidentified pieces of equipment. One described as 'mosaic diagram for bunker control scheme Warsop'. Book.

8 pp. Small brochure for personal mail boxes designed to comply With rules for the recently-implemented Rural Free Delivery.

Condición: New.

Condición: As New. Unread book in perfect condition.

Condición: As New. Unread book in perfect condition.

Taschenbuch. Condición: Neu. Neuware - An Improved Method in the Art of Signalling for Military & Scientific Purposes. details Finley's Heliotrope, a new helio-telegraph manufactured by the Amer. Helio-Telegraph & Signal Light Co. in 1887. This historical document provides insights into late 19th-century signaling technology, particularly the use of heliographs for military communication. It offers a glimpse into the advancements of optical telegraphy and its application in military and scientific contexts. This book is a valuable resource for historians, technology enthusiasts, and anyone interested in the evolution of visual communication methods.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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.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.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. 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.…