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R17 (New York City Subway Car)
The R17 was a New York City Subway car model built by the St. Louis Car Company in 1954 for the IRT A Division. A total of 400 cars were built, arranged as single units. Two versions were manufactured: Westinghouse (WH)-powered cars and General Electric (GE)-powered cars. The first R17s entered service on October 10, 1955. Originally painted maroon red, the R17s subsequently received several different paint schemes, including bright red, platinum mist/blue, or plain white. The R17s were replaced by the R62As in the 1980s, and the final train of R17s ran on February 29, 1988. Some R17 cars were saved for various purposes, but most were scrapped. Description The R17s were numbered 6500–6899. They were one of three car classes purchased in the mid-1950s by the New York City Transit Authority to replace much of the pre-World War II IRT High-Voltage (Hi-V) rolling stock, which included the Gibbs cars, the Deck Roofs, and the Hedley Hi-V cars. The cars were single unit cars ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Court Square (IRT Flushing Line)
Court Square in Springfield, Massachusetts, United States, is a park and historic district in the heart of Springfield's urban Metro Center neighborhood. Court Square is the City of Springfield's only topographical constant since its founding in 1636. It is bounded by Court Street, Main Street, State Street, East Columbus Avenue, and features Elm Street and a scenic pedestrian-only walkway from the courthouse toward Springfield's historic Old First Church. Springfield's Old First Church has been located in Court Square since the 17th century. It was the twentieth parish formed in the Massachusetts Bay Colony, and was gathered in 1637, the year after Springfield was founded. The first meetinghouse was erected just east of this site in 1645. The current Old First Church (b. 1819) is the fourth building on this site, built by a Northampton architect, Isaac Damon. The rooster weathervane on the steeple was crafted by a Coppersmith in London, England, and brought to this country ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York City Subway
The New York City Subway is a rapid transit system owned by the government of New York City and leased to the New York City Transit Authority, an affiliate agency of the state-run Metropolitan Transportation Authority (MTA). Opened on October 27, 1904, the New York City Subway is one of the world's oldest public transit systems, one of the most-used, and the one with the most stations, with New York City Subway stations, 472 stations in operation (424 if stations connected by transfers are counted as single stations). Stations are located throughout the boroughs of Manhattan, Brooklyn, Queens, and the Bronx. The system has operated 24/7 service every day of the year throughout most of its history, barring emergencies and disasters. By annual ridership, the New York City Subway is the busiest rapid transit system in both the Western Hemisphere and the Western world, as well as the List of metro systems, seventh-busiest rapid transit rail system in the world. In , the subway deliv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotor (electric)
The rotor is a moving component of an electromagnetic system in the electric motor, electric generator, or alternator. Its rotation is due to the interaction between the windings and magnetic fields which produces a torque around the rotor's axis.Staff. "Understanding Alternators. What Is an Alternator and How Does It Work." N.p., n.d. Web. 24 November 2014 . Early development An early example of electromagnetic rotation was the first rotary machine built by Ányos Jedlik with electromagnets and a commutator, in 1826-27. Other pioneers in the field of electricity include Hippolyte Pixii who built an alternating current generator in 1832, and William Ritchie's construction of an electromagnetic generator with four rotor coils, a commutator and brushes, also in 1832. Development quickly included more useful applications such as Moritz Hermann Jacobi's motor that could lift 10 to 12 pounds with a speed of one foot per second, about 15 watts of mechanical power in 1834. In 1835, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Current Traction
Railway electric traction describes the various types of locomotive and multiple units that are used on electrification systems around the world. History Railway electrification as a means of traction emerged at the end of the nineteenth century, although experiments in electric rail have been traced back to the mid-nineteenth century. Thomas Davenport, in Brandon, Vermont, erected a circular model railroad on which ran battery-powered locomotives (or locomotives running on battery-powered rails) in 1834. Robert Davidson, of Aberdeen, Scotland, created an electric locomotive in 1839 and ran it on the Edinburgh-Glasgow railway at 4 miles per hour. The earliest electric locomotives tended to be battery-powered. In 1880, Thomas Edison built a small electrical railway, using a dynamo as the motor and the rails as the current-carrying medium. The electric current flowed through the metal rim of otherwise wooden wheels, being picked up via contact brushes. Electrical traction offered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resistor
A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. High-power resistors that can dissipate many watts of electrical power as heat may be used as part of motor controls, in power distribution systems, or as test loads for generators. Fixed resistors have resistances that only change slightly with temperature, time or operating voltage. Variable resistors can be used to adjust circuit elements (such as a volume control or a lamp dimmer), or as sensing devices for heat, light, humidity, force, or chemical activity. Resistors are common elements of electrical networks and electronic circuits and are ubiquitous in electronic equipment. Practical resistors as discrete components can be composed of various compounds and forms. Resisto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redbird Trains
Redbird trains were eight New York City Subway train models so-nicknamed because of their red paint. The Redbirds totaled 1,410 cars of the following types on the A Division lines: R26, R28, R29, R33, R33S, and R36. There were also 550 cars on the B Division lines: R27 and R30/A. All were built by the American Car and Foundry Company and the St. Louis Car Company. These cars were painted a deep red to combat graffiti, which had become a major problem in the late 1970s and early 1980s. The color was referred to as "Gunn Red" or "Broad Street Red" in honor of its originator David L. Gunn, the former SEPTA General Manager who became President of the New York City Transit Authority during this period. Initially entering service in various colors, these cars received the new paint scheme between 1984 and 1989. Sixteen R17s were also given this paint scheme in 1985 and 1986, but were retired by 1988, well before the name "Redbird" caught on. Today, repurposed Redbird cars ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
R17 6688 MC , a Hungarian glide ...
R17 or R-17 may refer to: Vessels * , an aircraft carrier of the Royal Australian Navy * , also HMS ''Valentine'' (R17), a destroyer of the Royal Canadian Navy and Royal Navy * , a submarine of the United States Navy Other uses * R17 (New York City Subway car) * R17 (Rodalies de Catalunya), a regional rail service in Catalonia, Spain * ''R-17'' (TV series), a 2001 Japanese TV series * BMW R17, a motorcycle * ISO Recommendation R17, concerning preferred numbers * Oppo R17, a smartphone * R17: Spontaneously flammable in air, a risk phrase * R-17 Elbrus, a Soviet ballistic missile * R-17 regional road (Montenegro) * Renard R.17, a Belgian civil utility aircraft * Renault 17, a French car * Rubik R-17 Móka The Rubik R-17 Móka () was a Hungarian aerobatic glider designed in the late 1930s. One prototype was built and first flown in 1944 but was destroyed near the end of World War II. Two more, with modified ailerons and a new fuselage, were built ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Headlights
A headlamp is a lamp attached to the front of a vehicle to illuminate the road ahead. Headlamps are also often called headlights, but in the most precise usage, ''headlamp'' is the term for the device itself and ''headlight'' is the term for the beam of light produced and distributed by the device. Headlamp performance has steadily improved throughout the automobile age, spurred by the great disparity between daytime and nighttime traffic fatalities: the US National Highway Traffic Safety Administration states that nearly half of all traffic-related fatalities occur in the dark, despite only 25% of traffic travelling during darkness. Other vehicles, such as trains and aircraft, are required to have headlamps. Bicycle headlamps are often used on bicycles, and are required in some jurisdictions. They can be powered by a battery or a small generator like a bottle or hub dynamo. History of automotive headlamps Origins The first horseless carriages used carriage lamps ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hi-V (New York City Subway Car)
The Hedley Hi-V was a New York City Subway car class built from 1910 to 1911, which were motor cars, and then in 1915 an order for trailers that were numbered 4223–4514. All were built by the American Car and Foundry, Standard Steel Car Company, Pressed Steel Car Company, and Pullman Company. These were the first cars built with center doors. They were also the last high voltage cars built for the system because high voltage cars were a hazard to both the train operators and track crews. Thus, all subway cars delivered afterward were low voltage cars. __TOC__ Service history The order for Hedley High-V motors consisted of 325 cars, with 110 built by American Car and Foundry, 40 by Standard Steel and 175 by Pressed Steel. As delivered, the Hedley High-V motors were the first cars to be delivered with center doors on the sides, with all side seats to provide for them; the facing cross seats of previous cars being eliminated. They were also the first with the advanced couplers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deck Roof (New York City Subway Car)
The Deck Roof Hi-V was a New York City Subway car class built from 1907 to 1908 by the American Car and Foundry for the IRT and its successors, the New York City Board of Transportation and the New York City Transit Authority. Description A total of 50 Deck Roofs were built, numbered 3650–3699. These cars remained in service from 1907 to 1957. These cars were nicknamed the Battleships because of their paint scheme where the siding was painted Battleship Grey. When these cars were delivered, they had two doors on each side until the early 1910s, when they received another door in the middle on each side. The facing cross seats in the center, typical of el cars, were removed to accommodate the added center doors. At the same time, as with the Gibbs cars, these Deck Roof cars were retrofitted with the more advanced type couplers and AMRE triple valve braking system introduced in the later Hedley High-V motors. As with the Gibbs cars, many of these Deck Roof cars received moto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gibbs (New York City Subway Car)
The Gibbs Hi-V was a New York City Subway car class built from 1904 to 1905 by American Car and Foundry for the IRT and its successors, the New York City Board of Transportation and the New York City Transit Authority. It was the first all-steel subway car ordered for New York City. Because of the sliding doors which enclosed the motorman's vestibules from the rest of the car compartment, the cars were nicknamed Merry Widows. Early on, they were also known as Battleships, a reference to their second paint scheme where the siding was painted Battleship Grey. However, the nickname did not stick and was later given to the Deck Roof Hi-V cars, which were painted the same color. Today, references to the "Battleships" are generally assumed to be in reference to the Deck Roof cars, as opposed to the Gibbs cars. Background information As the Interborough Rapid Transit Company's subway line was the first attempt at an underground rapid transit, the IRT and chief engineer George Gibbs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
