Union Switch & Signal (commonly referred to as US&S) was an American company based in Pittsburgh, Pennsylvania, which focused on railway signaling equipment...

company Union Switch & Signal (US&S) was founded by George Westinghouse in Pittsburgh, Pennsylvania from the assets of the Interlocking Switch & Signal Company...

not implemented very widely. Union Switch & Signal bought their company in 1882. As technology advanced the railway signaling industry looked to incorporate...

(also called switch or turnout in the US) are set correctly Which way points are set The speed the train may travel The state of the next signal That the...

control switches (points), signals and block systems is called interlocking. Originally, all signaling was done by mechanical means. Points and signals were...

Singapore Union of Sovereign States, the planned successor to the Soviet Union Union Switch & Signal, a supplier of railroad switching equipment Union Syndicale...

1860s, and semaphores gradually displaced other types of signals. The Union Switch & Signal company (US&S) introduced an electro-pneumatic design in 1881...

include: Alstom née GE Electrocode 5 Microtrax/E-Code by Hitachi née Union Switch & Signal Where the length of a section exceeds the practical length of a...

"Centralized Traffic Control". Bulletin (176). Union Switch & Signal. Solomon, Brian (2010). Railroad Signaling (2nd ed.). Voyageur Press. ISBN 978-0-7603-3881-0...

circuit system developed by the Pennsylvania Railroad (PRR) and Union Switch & Signal (US&S) became the de facto national standard. Variations of this...

developed and manufactured by Union Switch & Signal Company, Swissvale, Pennsylvania, later part of Westinghouse Brake and Signal Company, from 1927. The invention...

(900,000 produced), Colt (400,000), Ithaca Gun Company (400,000), Union Switch & Signal (50,000), and Singer (500). New M1911A1 pistols were given a parkerized...

engineers also developed track-switching and signaling systems, which lead to the founding of the company Union Switch & Signal in 1881. In the early 1880s...

demand and was assisted by Remington Rand, Singer Corporation, Union Switch & Signal, Remington Arms and the Ithaca Gun Company. After the war all contracts...

Gardner-Bailey House is on the National Register of Historic Places. Union Switch & Signal's primary factory was located near here for 106 years prior to its...

James Swisshelm, during the industrial age it was the site of the Union Switch and Signal Company of George Westinghouse. The population was 8,624 at the...

manufacturer mark "Un-quality". The receiver was subcontracted from Union Switch and Signal, not Underwood. Many carbines were refurbished at several arsenals...

interlocking signals were widely adopted in the U.S. After 1908 with the advent of the Union Switch & Signal's Styles "B" & "S" and the General Railway Signal Company's...

Brake and Signal Company Ltd – Chippenham, Wiltshire, UK Knorr-Bremse – successor of the Chippenham air brake business Union Switch & Signal – WABCO subsidiary...

out bulbs in the main light. Wigwags were also manufactured by Union Switch and Signal (US&S). They were primarily used in the northeastern US, with a...

with a software-controlled Automatic Train Supervision product by Union Switch & Signal, subcontracted to Syseca Inc. (now ARINC), in a new control room...

States by the name Common Channel Interoffice Signaling in the 1970s for signaling between No. 4ESS switch and No. 4A crossbar toll offices. The SS7 protocol...

II model as designated by IdFlieg, and in the United States; the Union Switch & Signal Company of Swissvale, PA was reported to have produced some 10,000...

Westinghouse Electric, Harsco Track Tech, Trane, Intertape Polymer Group, Union Switch & Signal, FN Herstal, Solectron, and Bose Technology have facilities in the...

safety systems exist on the metro: the older system manufactured by Union Switch & Signal in use on the Red and Blue Lines and a modern automatic train operation...

block signaling is used. The system has been designed and built by Union Switch & Signal. The ATO is the autopilot that drives the trains in line with a...

throttle valve Drifting valves Automatic Automatic train control Union Switch & Signal coded continuous 2 × Westinghouse Simplex air compressors mounted...

University of Pittsburgh in 2002 and began working at Union Switch & Signal, a supplier of railroad signaling equipment, where he worked on anti-collision software...

wigwags are upper-quadrant wigwags from the Magnetic Signal Company, one from the Union Switch & Signal, and the other two are lower quadrant wigwag from...

passed a red signal or the driver has failed to respond to warnings to check that they are still alert, which is known as a dead man's switch. A similar...