Cincinnati Street Railway (CSR) was the public transit operator in Cincinnati, Ohio, from 1859 to 1952. The company ceased streetcar operations and was renamed Cincinnati Transit Company.
74-504: The company was founded in 1859 and was one of several operators. The Cincinnati Consolidated Railway merged with CSR in 1880: Some of the city's streetcars, namely A9-10 PCC were sold to the Toronto Transit Commission upon abandonment. The company began subway construction from 1920 to 1925, but the route was abandoned due to lack of money. Some former CSR vehicles have been preserved in museums. One example
148-625: A batch of 25 for the San Francisco Municipal Railway , manufactured by St. Louis and delivered in 1951–2. A total of 4,586 PCC cars were purchased by United States transit companies: 1,057 by Pullman Standard and 3,534 by St. Louis. Most transit companies purchased one type, but Chicago, Baltimore, Cleveland, and Shaker Heights ordered from both. The Baltimore Transit Co. (BTC) considered the Pullman cars of superior construction and easier to work on. The St. Louis cars had
222-425: A circle. An arm rotating in the circle center had rollers on either end which cut out field resistance to increase speed as it was rotated a total of approximately 180 degrees rotation. This same accelerator also was used for dynamic braking ; when the accelerator pedal was released, the resistance wheel sought optimum braking for the speed, which prevented a lag when the brake pedal was depressed. Westinghouse's design
296-722: A combination of economics and a desire to help revive the Girard Avenue corridor with a more "romantic" vehicle led to the agency restoring the old vehicles for about half the cost of new cars. SEPTA uses Kawasaki vehicles on the rest of its trolley lines, including the Subway-Surface Green Line linking West Philadelphia with Center City and its 69th Street Transportation Center with the western suburbs of Media and Sharon Hill via light rail routes 101 and 102 . San Diego ; started 2011; number in service: 2. San Diego Trolley currently uses 2 PCCs and
370-712: A competitive design—the Brilliner —to market in 1938. Because Raymond Loewy designed elements that were very similar to the PCC look, the Brilliner attracted no large orders, being built only for Atlantic City Transit and the Red Arrow Lines in suburban Philadelphia. Fewer than 50 were sold. A significant contribution to the PCC design was noise reduction with extensive use of rubber in springs and other components to prevent rattle, vibration, and thus noise and to provide
444-883: A group of cars on October 1, 1936, followed by CSL on November 13, 1936. Production continued in North America by St. Louis Car Co. and Pullman Standard until 1952, with 4,978 units being built. Under license to use the designs patented by TRC, thousands more PCC and partially PCC type cars were produced in Europe through the last half of the 20th century. The cars were well built, and many hundreds are still in operation. The majority of large North American streetcar systems surviving after 1935 purchased PCC streetcars. The systems which eventually terminated streetcar operations often sold their cars to surviving operators. The Melbourne & Metropolitan Tramways Board (MMTB) in Australia
518-419: A hypoid gear is a revolved hyperboloid (that is, the pitch surface of the hypoid gear is a hyperbolic surface), whereas the shape of a spiral bevel gear is normally conical. The hypoid gear places the pinion off-axis to the crown wheel (ring gear) which allows the pinion to be larger in diameter and have more contact area. In hypoid gear design, the pinion and gear are practically always of opposite hand, and
592-439: A length of 46 ft 5 in (14.1 m). Other body differences were a recessed windshield and wider doors. There were far fewer variations of this style, width being the most common. Most double ended cars, at 50 ft 5 in (15.4 m) long by 9 ft (270 cm) wide, were larger than standard, with different door arrangements. Only Dallas ordered standard size double ended cars. All double ended cars retained
666-418: A level of comfort unknown before. Wheel tires were mounted between rubber sandwiches and were electrically isolated so that shunts were required to complete a ground. Resilient wheels were used on most PCC cars, with later heftier versions known as "Super-Resilient". Gears were another source of considerable noise, solved by employing hypoid gears which are mounted at a right angle to the axle, where three of
740-435: A maximum deceleration of 9 mph /s (14 km/h). Compared to a maximum of 14 points on older equipment, the PCC was considerably smoother. Most PCCs employed three pedals with a dead man's switch to the left, brake in center, and power pedal on the right. Depressing the brake about half-way and then releasing the deadman pedal put the PCC in "park". Lifting the deadman alone would apply all brakes, drop sand, and balance
814-411: A more aesthetically pleasing design with a more rounded front and rear, compound-curved skirt cut-outs, and other design frills. When a wire is placed in a magnetic field and an electric current is passed through it, the wire will move. If this wire is wrapped on a spool and placed in a magnetic field with an electric current passed through it, the spool (rotor) will rotate, creating an electric motor. If
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#1732791542487888-464: A professional driver is to cover the brake at all times). The left pedal applied the power and the heel interlock had to be engaged at all times since it was the deadman; only when the brake was in "park" could the deadman be disengaged. St. Louis is unique in that all 300 of their PCCs are All-Electric with the 1500s ordered in late 1939, the 1600s ordered late 1940s and the 1700s in January 1945. SLPS
962-517: A second steering post except the 7500 prototype which was versed to the collection of the Brussels Tram Museum . Two-body and three-body reversible PCC trams are still in regular service next to more modern low-floor trams. All these articulated PCC cars use Jacobs bogies under the articulations (see example at right). Hypoid#Hypoid gears A spiral bevel gear is a bevel gear with helical teeth. The main application of this
1036-547: A short section of track and 4000 is used for rides in rotation with others streetcars in their collection. Most PCC-based systems were dismantled in the post-war period in favor of bus-based transit networks. Of the rail transit systems that survived this period, most had replaced their PCCs with modern light rail vehicles (LRVs) by the early 1980s. Beginning in the late 1990s, several cities began to make use of historic PCCs to serve historic streetcar lines that combined aspects of tourist attractions and transit. This table lists
1110-429: A sloped windshield to eliminate nighttime glare, redesigned back end, forced-air ventilation, and other features. Dynamic brakes were the service brake on all PCCs; when almost stopped, friction brakes completed the stop and held the car in "park". Dynamic brakes slowed the "Air" cars to 3 mph (4.8 km/h) at which point a lock-out relay allowed automatic application of air-applied friction brakes against each of
1184-607: A speed of 50 mph (80 km/h), adequate for their system. When Clark stopped building railroad equipment in 1952 PCC trucks were no longer available, Boston and Cleveland then used non PCC trucks with 28 in (710 mm) wheels. Chicago ordered the first of 770 (720 + 50 double-ended) 6000-series cars in 1948 (before the standard, which they influenced), Boston (40, then later 100) in 1950, and Cleveland (70 + 18 double-ended) in 1952. Chicago's first 200 cars were entirely new, but in 1953 they started using components salvaged from new, but no longer needed, streetcars. Toronto, on
1258-431: A spiral bevel gear is the angle between the tooth trace and an element of the pitch cone, and corresponds to the helix angle in helical teeth. Unless otherwise specified, the term spiral angle is understood to be the mean spiral angle. Hypoid gears are stronger, operate more quietly and can be used for higher reduction ratios, however they also have some sliding action along the teeth, which reduces mechanical efficiency,
1332-778: A subsidiary of the French Alstom) allowed the trams to coast under their accumulated kinetic energy. Two main body standards were made – 1936 and 1945, sometimes called pre-and post-war – the most prominent difference being the windows. The pre-war cars usually had a right side arrangement of front door, five windows, center door, five windows, and one large rear quarter window. These cars were 46 ft (14.0 m) long and 8 ft 4 in (254 cm) wide. There were variations, Washington, D.C. ordered shorter cars, at 44 ft (13.4 m), with one less window, while Chicago ordered longer and wider cars, at 50 ft 5 in (15.4 m) by 8 ft 9 in (267 cm), with
1406-482: A three-door arrangement. Chicago cars were built with the centerline of the carbody to the right of the centerline of the tracks, so the widened cars could pass on the existing trackage. Post war cars had a rationalized window arrangement. The windows and pillars were narrower, and there were small "standee" windows above each window. Right side arrangement usually was front door, seven windows, side door, four windows, and two rear quarter windows. Most post-war cars had
1480-426: A vehicle to drive either direction. Another advantage of hypoid gear is that the ring gear of the differential and the input pinion gear are both hypoid. In most passenger cars this allows the pinion to be offset to the bottom of the crown wheel. This provides for longer tooth contact and allows the shaft that drives the pinion to be lowered, reducing the "hump" intrusion in the passenger compartment floor. However,
1554-414: Is also commonly used in some railcar transmissions with diesel power units - where the engine and gearbox are similar to those used in traditional trucks and busses (not diesel/electric hybrid type drive). The transmission, to allow the input shaft to always rotate in one specific direction (either clockwise or anti-clockwise) while allowing the output shafts to change their rotational direction; thus allowing
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#17327915424871628-766: Is car 2227, built in 1919 by the Cincinnati Car Company , at the Pennsylvania Trolley Museum . That museum acquired car 2227 from the Lake Shore Electric Railway (another museum) in 2009 and restored it, unveiling the restored car in 2013. PCC streetcar The Presidents' Conference Committee ( PCC ) is a streetcar design that was first built in the United States in the 1930s. The design proved successful domestically, and after World War II it
1702-475: Is in a vehicle differential , where the direction of drive from the drive shaft must be turned 90 degrees to drive the wheels. The helical design produces less vibration and noise than conventional straight-cut or spur-cut gear with straight teeth. A spiral bevel gear set should always be replaced in pairs i.e. both the left hand and right hand gears should be replaced together since the gears are manufactured and lapped in pairs. A right hand spiral bevel gear
1776-593: Is in the process of determining viability of a third car as of 2016. They are in use on the Silver Line which opened in 2011 and runs in a clockwise loop around Downtown San Diego . San Francisco ; started 1995; number in service: 27 . The F Market Line (historic streetcar service) in San Francisco, opened in 1995, runs along Market Street from The Castro to the Ferry Building , then along
1850-413: Is often impossible to replace low efficiency hypoid gears with more efficient spiral bevel gears in automotive use because the spiral bevel gear would need a much larger diameter to transmit the same torque. Increasing the size of the drive axle gear would require an increase of the size of the gear housing and a reduction in the ground clearance, interior space, and an increase in weight. The hypoid gear
1924-406: Is one in which the outer half of a tooth is inclined in the clockwise direction from the axial plane through the midpoint of the tooth as viewed by an observer looking at the face of the gear. A left hand spiral bevel gear is one in which the outer half of a tooth is inclined in the counterclockwise direction from the axial plane through the midpoint of the tooth as viewed by an observer looking at
1998-695: Is the original purchaser. Toronto's first PCC streetcar entered service on September 22, 1938. All new PCCs purchased by 1951; second-hand by 1957. The TTC now owns and operates only two PCCs for private charter: numbers 4500 and 4549. One PCC, #4612, was donated in operating condition by the TTC to the Edmonton Radial Railway Society in 1997; the society has two additional PCCs from Toronto (4349 and 4367) awaiting restoration. The Halton Country Railway Museum (near Milton Ontario) owns 3 retired TTC streetcars, 4000, 4386 and 4426. They operate
2072-550: The Embarcadero north and west to Fisherman's Wharf . This line is run by a mixture of PCC cars built between 1946 and 1952, and earlier pre-PCC cars. Due to its success, a second heritage line was inaugurated in 2015, the E Embarcadero , which serves to facilitate a one-seat ride from the Caltrain San Francisco station to Fisherman's Wharf. Although San Francisco had removed PCCs from revenue service when
2146-581: The Expo 58 : they were single-body non-reversible two-bogie cars. Articulated trams arrived since 1965: first two-body non-reversible trams (series 7500) then two-body (series 7700–7800) and three-body (series 7900) reversible ones, the last one delivered in 1978. The last single-body PCC tram in commercial service in Brussels ran in February 2010. All series 7500 trams were converted to series 7700 by addition of
2220-599: The Seashore Trolley Museum . Dallas ; started 2003; number in service: 1. The McKinney Avenue Transit Authority in Dallas, Texas, owns three PCC cars, two from Toronto, one from the former Tandy Center Subway. One of the ex Toronto cars is currently in service. El Paso ; started 2018; number in service: 6. Officials in El Paso expressed their desire to preserve the history of the city by refurbishing
2294-1007: The United States by the St Louis Car Company (SLCCo) and Pullman Standard . Clark Equipment built the only aluminum-body PCC as well as all narrow gauge B1 trucks for Los Angeles, all the standard and broad gauge B2 trucks both air- and all-electric, and the B2B trucks used under PRCo 1725–1799 and Toronto 4500–4549. SLCCo built all B3 trucks, both standard and broad gauge. PCC cars for Canadian cities were assembled in Montreal , Quebec by Canadian Car & Foundry from bodies and trucks supplied by St. Louis Car. Westinghouse ( Westinghouse Electric , Westinghouse Air Brake Company , Canadian Westinghouse Co.) and General Electric both supplied electrical packages and brake components which were designed and built in cooperation with
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2368-462: The 1880s required a standing operator at a four-foot-high vertical controller "stand" to rotate a handle to one of ten electrical resistance points within the stand to provide trolley acceleration. The resistors were not very large and were mounted adjacent to one another along the outside frame bottom of the trolley to provide cooling as they would get very hot. For the PCC however, there were more than ten resistance/speed points; Westinghouse developed
2442-579: The Brooklyn order would have all cars equipped by General Electric , and Clark Equipment Company pressed for one car to be made by them of aluminum for delivery to B&QT. Agreements among the parties were reached whereby St Louis Car Company would build 101 essentially identical cars and Clark would build one of its own body design. Brooklyn received its first car number 1001 on May 28, 1936, PRCo took delivery of car number 100 on July 26, 1936, and Baltimore received its first car on September 2, 1936. In
2516-467: The ERPCC. The customer specified the equipment, which was to be installed, performance was similar, and most cities ordered from both suppliers. Since Westinghouse was home based near Pittsburgh, PRCo ordered 75% of its PCC fleet with Westinghouse equipment, the balance with GE. Indeed, PCCs are often identified as either Westinghouse or GE. The last PCC streetcars built for any North American system were
2590-724: The Netherlands; and particularly the Czech ČKD Tatra , who built the largest number of the PCC type in the world, supplying a number of Central and Eastern European countries. Trams such as the Tatra T3 and its variant Tatra T4 , together the most numerous of any tram model ever produced, are still in service today in many of the regions where they were first introduced. Modern variants of the Tatra T3 are still produced today by some manufacturers, such as KOS Krnov. The Polish Konstal 13N
2664-601: The P.C.C. car to out-pace the average automobile which, in America, is of substantially higher performance than the typical British vehicle." This, however, is only true when compared to the automobiles of that period. The system of acceleration and braking described above means that the original PCC cars were (when in movement) always either accelerating or braking. A later improvement on the Brussels trams (built at that time under license by La Brugeoise et Nivelles and ACEC, now both subsidiaries of Bombardier Transportation, itself
2738-784: The Route 15 Girard Avenue line in Philadelphia in September 2005 after a 15-year "temporary" suspension of trolley service in favor of diesel buses. The line uses restored and modernized (by the Brookville Manufacturing Company) PCC cars, known as PCC-IIs (now upgraded as PCC-IIIs), painted in their original green and cream Philadelphia Transit Company livery, rather than SEPTA's white with red and blue stripes. Modernization included all-new control systems, modern turn markers, HVAC system (which accounts for
2812-467: The XD-323 underfloor rotary accelerator for the PCC's motor control with 99 resistance points. It was installed in the first Pittsburgh car, number 100, and minor modifications allowed use in the last PCCs produced in North America for San Francisco in 1952. The sitting PCC operator had a foot accelerator on the floor, much like that of an automobile, with linkage to underfloor resistance ribbons mounted in
2886-555: The city's light rail was transformed into the Muni Metro system in 1980, they had made occasional festival trips in the ensuing years before being returned to full-time service. Car 1074 is painted in Toronto Transit Commission livery, but was never owned by the TTC. Toronto ; started 1938; number in service: 2. The first PCC cars in Canada were operated by the Toronto Transit Commission (TTC) in 1938. By 1954, Toronto had
2960-631: The committee, initially considered buying the cars, but increased metal prices due to the Korean War made them prohibitively costly. Brooklyn, who had bought the first five prototype trainsets, also did not buy any production trainsets. 240 PCC rapid transit cars were built in four years, from 1948 to 1952, then 438 cars with non-PCC trucks until 1957, the last of Chicago's 570 cars built with salvaged components were delivered in 1958. Some Chicago cars were in regular service in 1990, car number 30 made its last revenue run in 1999. The operator listed
3034-422: The doors so they could be pushed open easily. Chicago used "bicycle-type levers" for power and brake but converted some cars to two pedals. St. Louis Public Service Co. (SLPS) used two pedals, both with heel interlocks. The right pedal is the brake; depressing this pedal about halfway while lifting away from the heel applied "park". Once the brake is released the heel need not be engaged with the interlock (although
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3108-422: The drums from releasing which would prevent power application, a fail-safe feature. Drum brakes were quite popular and greatly reduced maintenance thus some "Air" cars were retrofitted with drums. Four magnetic brakes, one between the wheels on each side of each truck , applied additional braking for emergency stopping where all brakes were generally employed. "These performances [acceleration and braking] enable
3182-400: The eight wheels. On All-Electric cars the dynamics were effective to 0.75 mph (1.21 km/h) where the lockout relay then allowed a spring-applied friction brake to engage a drum on each of the four motor drive shafts; this completed the stop and held the car in park. Drum brakes were released by an electric solenoid operating from low-voltage battery power; a power failure would prevent
3256-400: The energy losses being in the form of heat produced in the gear surfaces and the lubricating fluid. Hypoid gears are typically used in rear-drive automobile drivetrains . A higher hypoid offset allows the gear to transmit higher torque. However increasing the hypoid offset results in reduction of mechanical efficiency and a consequent reduction in fuel economy . For practical purposes, it
3330-421: The face of the gear. Note that a spiral bevel gear and pinion are always of opposite hand, including the case when the gear is internal . Also note that the designations right hand and left hand are applied similarly to other types of bevel gear, hypoid gears, and oblique tooth face gears. A hypoid is a type of spiral bevel gear whose axis does not intersect with the axis of the meshing gear. The shape of
3404-490: The findings, and ultimately produced a set of specifications for a standardized and fixed design. It included a modest list of available options with ample room for customer customization but was to be built with standard parts as opposed to a custom designed car body with diverse parts added depending on the whims and requirements of the individual customer. Numerous national and international users operated large fleets of PCC cars for many years. Many design patents resulted from
3478-500: The largest PCC fleet in the world, including many purchased second-hand from U.S. cities that abandoned streetcar service following the Second World War . Although it acquired new custom-designed streetcars in the late 1970s and 1980s (and which was replaced by modern LRVs by Dec. 2019), the TTC continued using PCCs in regular service until 1995, and retains two (numbers 4500 and 4549) for charter purposes. The PCC license
3552-567: The late 1936 discussions of operating experience, it was noted that the Brooklyn car had run 3,000 miles by the time the Pittsburgh car had run 1,000 miles. One of the key patents was filed by Dan H. Bell on January 8, 1937, and granted on July 5, 1938, and entitled, "Rail Car or Similar Article," Patent No. 110,384. The first car to be placed in a scheduled public service was PRCo 100 in August and B&QT launched its first scheduled service with
3626-526: The line's bridges cannot support heavier light rail vehicles (LRV) operated on the MBTA's Green Line . Not considered historic equipment, the PCC cars in use on the Mattapan–Ashmont line represent the oldest cars still in revenue service, originally built between 1943 and 1946. These cars are also the only air-electric PCCs still in regular service in North America. Several retired PCCs from Boston are now at
3700-442: The longest at 55 ft (16.8 m), and narrowest at 8 ft 4 in (254 cm), Cleveland had the widest at 10 ft 4 in (315 cm). Trucks were a major focus, both Clark and St. Louis developed trucks with 28 in (710 mm) wheels and a 70 mph (110 km/h) maximum speed, but only Boston used them, Clark B10s on 40 cars. Chicago used streetcar type trucks, with 26 in (660 mm) wheels and
3774-438: The majority but could easily be changed for special situations. Windows were spaced to match seating. While some of the components in the PCC car had been used before— resilient wheels , magnetic braking , sealed gears, and modular design to name a few—the ERPCC redesigned, refined, and perfected many of these while developing new acceleration and braking controls and put them all in one package. PCC cars were initially built in
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#17327915424873848-538: The membership roll were manufacturers of surface cars ( streetcars ) and interested component suppliers. ERPCC's goal was to design a streamlined , comfortable, quiet, and fast accelerating and braking streetcar that would be operated by a seated operator using floor-mounted pedal controls to better meet the needs of the street railways and appeal to riders. ERPCC prepared a detailed research plan, conducted extensive research on streetcar design, built and tested components, made necessary modifications and revisions based upon
3922-411: The more unique examples due to the installation of overhead wires being prohibited within the city limits, necessitating the use of conduit plows that collected current using a plow lowered into a slot between the rails contacting positive and negative rails under the street. A pit was located at the boundary line of the city limits, over which cars would stop to have their power collection changed from
3996-600: The noticeably larger roof enclosure), and ADA compliant wheelchair lifts. The line runs from Haddington to Port Richmond down the median of Girard Avenue. It crosses both the Broad Street Subway and the Market–Frankford Line , and stops at the Philadelphia Zoo , among other landmarks. SEPTA had originally planned to run modern Kawasaki trolleys along the line once service was restored, but
4070-605: The old PCC streetcars that once made their way through Downtown from 1949 to 1974. They operated on the international streetcar line that connected El Paso, Texas in the United States, with Ciudad Juárez, Mexico. Originally, the line operated until 1973. Six cars in total have been restored, regular revenue operations began in late 2018 for the downtown loop. Kenosha ; started 2000; number in service: 7. The Kenosha Electric Streetcar in Kenosha, Wisconsin , has been operating six ex- Toronto Transit Commission PCCs (five since 2000 and
4144-575: The pre-war style body until the end of production. There were four rapid transit companies on the committee, but the primary focus was streetcars, rapid transit development was slower. The difference in operations between the systems also made standardization difficult. By 1940, Brooklyn had five three-section articulated trainsets with PCC components, after WWII Chicago ordered four similar trainsets . Chicago ordered two from Pullman and two from St. Louis, with different equipment, so that competing manufacturers could be directly compared. Experience from
4218-408: The six teeth constantly engaged the main gear, reducing lash and noise. All movable truck parts employed rubber for noise reduction as well. "Satisfactory Cushion Wheel of Vital Importance; Develop New Truck Design; Generous Use of Rubber" are headings within a paper that Chief Engineer Clarence F. Hirshfeld both presented and published. After a specification document suitable for purchasing cars
4292-548: The sixth since 2009) and one ex- SEPTA car since 2009. The Kenosha Electric is unique among modern PCC operations in that PCCs had not run in the city before 2000—the original rail system was shut down in 1932 before any PCC cars had been built. Two of its cars are still painted in their original TTC colours, while the rest have been re-decorated in the liveries of several U.S. cities including Pittsburgh, Johnstown, Chicago and Cincinnati. Philadelphia ; started 2005; number in service: 18 . SEPTA restored trolley service to
4366-411: The spiral angle of the pinion is usually larger than that of the gear. The hypoid pinion is then larger in diameter than an equivalent bevel pinion. A hypoid gear incorporates some sliding and can be considered halfway between a straight-cut gear and a worm gear . Special gear oils are required for hypoid gears because the sliding action requires effective lubrication under extreme pressure between
4440-418: The strength of the magnetic field or the amount of current running through the motor is increased (or both), the motor's speed will increase. With a trolley, the speed is controlled by several resistors placed in the wire running to the rotor. Removing circuit resistors one at a time will increase the current in the motor's magnetic field and this will increase the motor's speed. Prior streetcar speed control from
4514-411: The teeth. Hypoid gearings are used in power transmission products that are more efficient than conventional worm gearing. They are considerably stronger in that any load is conveyed through multiple teeth simultaneously. By contrast, bevel gears are loaded through one tooth at a time. The multiple contacts of hypoid gearing, with proper lubrication, can be nearly silent, as well. The spiral angle in
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#17327915424874588-464: The trainsets influenced the following car standards. Cars were to be approximately 48 ft (14.6 m) long (the Chicago maximum, Boston had some 55 ft (16.8 m) long) with one cab per car arranged in "married" two car sets, a double ended single car variant was possible. Number and type of doors and windows, interior layout, and width of cars varied with each system. Boston had two sizes,
4662-696: The transit agencies that still employ PCCs in revenue service, as opposed to a short-run or intermittent heritage railway. Boston ; started 1941; number in service: 4. The Mattapan Line in Boston is a light-rail extension of the MBTA 's heavy Red Line . It runs from the Ashmont terminus of the Red Line to Mattapan , and runs PCCs exclusively. The line was shut down for reconstruction from June 24, 2006, until December 22, 2007, but PCC cars have resumed operation since
4736-502: The trolley pole to the conduit plow and vice versa. "The PCC car was not just another modular vehicle but the result of the only systems engineering approach to mass producing a rail car." Research into passenger comfort resulting from vibrations, acceleration, lighting, heating and cooling, seat spacing, cushion height, space for arms, legs, standing passengers, economies of weight affecting maintenance, cost of power, reduced wear of components and track. Dimensions were established to fit
4810-491: The work of ERPCC. These were transferred to a new business entity called the Transit Research Corporation (TRC) when ERPCC expired in 1936. Although this company continued the work of research on improvements to the basic design of the car and issued sets of specifications three times in the ensuing years, because TRC defined a PCC car as any vehicle which used patents on which it collected royalties, it
4884-498: Was formed for the primary purpose of controlling those patents and promoting the standardization envisioned by the ERPCC. The company was funded by its collection of patent royalties from the railways which bought PCC cars. The company was controlled by a voting trust representing the properties which had invested in the work of ERPCC. One participant in Committee meetings, Philadelphia trolley manufacturer J.G. Brill Company , brought
4958-608: Was generated by TRC, orders were placed by eight companies in 1935 and 1936. First was Brooklyn & Queens Transit Corporation (B&QT) for 100 cars, then Baltimore Transit Co. (BTCo) for 27 cars, Chicago Surface Lines (CSL) for 83 cars, Pittsburgh Railways Co. (PRCO) for 101 cars, San Diego Electric Railway (SDERy) for 25 cars, Los Angeles Railway (LARy) for 60 cars, and then Boston Elevated Railway (BERy) for one car. In late 1935 or early in 1936 Westinghouse Electric Corporation pressed for one car to be equipped with their electrical equipment for testing in Pittsburgh, since
5032-947: Was keen to build two new tram routes after World War II, and these routes would be served by PCC Streetcars. The MMTB decided that it was too expensive and Melbourne only ever had two PCC streetcars, of which one was a prototype for a completely different class. Several dozen remain in public transit service, such as on the Ashmont-Mattapan High Speed Line in Boston , as well as in Philadelphia , Kenosha, San Diego and San Francisco following extensive overhauling. All other surviving and functional North American PCC cars are operated by museums and heritage railways. Several retired PCCs from Boston, Cleveland, and Philadelphia were purchased as scrap and have been privately stored just outside Windber, Pennsylvania since 1992. The PCCs built for Washington, D.C. were among
5106-697: Was licensed for use elsewhere in the world where PCC based cars were made. The PCC car has proved to be a long-lasting icon of streetcar design, and many remain in service around the world. The Presidents' Conference Committee (PCC) originated from the design committee formed in 1929. It was renamed the "Electric Railway Presidents' Conference Committee" (ERPCC) in 1931. The group's membership consisted primarily of representatives of several large operators of U.S. urban electric street railways plus potential manufacturers. Three interurban lines and at least one "heavy rail", or rapid transit , operator— Chicago Rapid Transit Company —were represented as well. Also included on
5180-622: Was not built under license. Only models with direct references to the original American PCC streetcar are included here. Later models of a particular series such as the Tatra T5 were adapted and modernized further. Note that the country listed only covers areas where the cars were initially delivered; references for these areas can be found in the text. Belgium ; introduced 1951; number built: 125 (both models) . The first PCC cars in Brussels (series 7000–7100) were built in prevision of
5254-596: Was remarkable and innovative in that it allowed motor control by floor pedal similar to that of an automobile. General Electric also developed a control system for PCC cars that mirrored the Westinghouse scheme in function although not in simplicity or maintainability . With the GE commutator motor controller operating by air pressure, it had to be redesigned with the advent of the All-Electric PCC. Acceleration
5328-457: Was the rolling laboratory for All-Electrics and what was learned here was applied to the post-WW2 All-Electric demonstrator in the fall of 1945. From 1936 to 1945, PCC cars were "Air-Electrics" with friction brakes , doors, and windshield wipers operated by air pressure. PRCo PCC 1600 of 1945 was the post WW2 All-Electric Demonstrator which eliminated the air compressor and associated piping while incorporating such features as standee windows ,
5402-669: Was used worldwide after World War II had ended which resulted in adaptations based on the American PCC design. Two such licensees were successful, namely the Belgian company La Brugeoise et Nivelles (since 1988 a subsidiary of Bombardier Transportation , itself since 2021 a subsidiary of the French Alstom ), who built both standard-gauge and meter-gauge cars based on the PCC license for many networks in Belgium, France and
5476-445: Was variable between 1.5-to-4.75-mile-per-hour per second (2.41 to 7.64 km/h) depending upon the depression of the power pedal with the accelerator advanced automatically by a low-voltage pilot motor. Service braking was also variable and the maximum dynamic application decreased speed by 4.75 mph per second (7.64 km/h); pressing the brake pedal into emergency also brought the friction and magnetic brakes into play providing
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