The Silverliner IV is the fourth-generation electric multiple unit railcar in the Silverliner family. It was designed and built by General Electric and was delivered between 1973 and 1976. It operates on the SEPTA Regional Rail network throughout Greater Philadelphia .
30-661: The 232-car Silverliner IV order was the largest order of the Silverliner series to date. It allowed for the retirement of most of the Reading electric multiple units and PRR MP54 cars, which dated from at least the 1930s. Three times as numerous as the previous Silverliner trains put together, the Silverliner IV became SEPTA's most common passenger railcar from 1976 onward. Like the Silverliner II and III cars,
60-473: A manufacturer of electrophysical equipment. In 1978 it was taken over by the Schunk Group. The Weiss Technik consists of the two business units, Environmental Simulation and Air Solutions. In the course of several decades the company consortium expanded both nationally and internationally. The Weiss Technik has a total of over 22 companies in 14 countries worldwide and employs about 2,000 people (with 850 in
90-449: A number of modifications to the class. The propulsion system was initially upgraded from the original mercury arc–based Ignitron rectifiers to more reliable solid state silicon controlled rectifiers and later the main transformers had their coolant replaced with one that did not contain PCBs . As this change was carried out in the early 1990s, all of the 9000 series Reading cars and some of
120-510: A presence in 29 countries with more than 60 operative companies. Consolidated sales came to EUR 1,450 million in 2022 and the number of employees is more than 9,000. The Schunk Group comprises four divisions and a total of 10 business units. The company was founded by Ludwig Schunk and Karl Ebe in 1913 in Fulda to produce carbon brushes. In 1918 the company moved to Heuchelheim near Giessen. The childless founder Ludwig Schunk (1884–1947) bequeathed
150-475: Is divided up into four divisions: The Schunk Carbon Technology Division manufactures construction components, among other things from carbon/graphite, carbon compounds, silicon carbide and quartz. It is broken down into the following business units: The companies Weiss Umwelttechnik GmbH and Weiss Klimatechnik GmbH operate under the trademark of the Weiss Technik. Karl Weiss GmbH was founded in 1956 as
180-471: Is present in the US with eight operating companies. In 1993 the product spectrum was broadened with the division of ultrasonic welding technology. In 1986 a training program to train future generations of skilled workers in theory and practice was set up. In 1991 the company experienced a crisis due to diversifications that failed, particularly in the field of automation technology. In the following year, 1992, there
210-417: The automotive industry . Ludwig Schunk and Karl Ebe in 1913 founded the carbon brush factory Schunk+Ebe oHG in Fulda. In 1918 the company moved to Heuchelheim . In 1923 brush holders were included in the product line. Starting in 1924, there was manufacturing of electrographite and after 1928 the manufacture of metal contacts as well. In 1932 sinter metal production was started with sintering bearings. After
240-475: The IV cars were owned by SEPTA and provided to the private railroads for use in their state-supported commuter rail operations until SEPTA assumed direct operation in 1983. The cars were ordered from General Electric and Avco. Aside from the boxier look and smaller side windows, the main changes between the new IVs and earlier Silverliners included a dynamic brake system, for which the resistance grids were fitted in
270-610: The Penn Central cars were renumbered into the series 400 through 460 to help keep track of which units had undergone the modification. When the Center City Commuter Connection opened in 1984, the Reading cars were converted to full train automatic door operation to take advantage of the high level platforms at the new Market East Station (now Jefferson Station) and others on the former PRR "side" of
300-502: The Reading black diamond logo was omitted (and the space left blank) on cars 129-188 which were delivered after the Reading Company was absorbed into Conrail on April 1, 1976. These logos remained mostly intact until 1983, when SEPTA took over commuter rail operations from Conrail and quickly began applying its current rectangular logo over all the others. The Silverliner IVs have never been officially rebuilt, but there have been
330-530: The Schunk Group consists of the firms of Schunk Sintermetalltechnik GmbH Giessen, Schunk Sintermetalltechnik GmbH Thale and Sintermetalltechnik S.A. de C.V. Mexiko. Schunk Sinter Metals primarily produces sintered structural parts such as gearwheels, camshaft adjusters, locking cams, metal injection mold (MIM) parts as well as precision bearings. The main users are in the automotive and electric industries, or are producers of household and power tools and medical technology. Schunk Sonosystems GmbH came about by merging
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#1732773240502360-504: The Silverliner IV fleet, and in 2015, listed the replacement of the Silverliner IV with the as of yet built Silverliner VI as part of its ongoing renewal program, though no timeline was given for the retirement of the Silverliner IV fleet. Only one car, #9020, has been retired as of 2023 after a severe rear-end collision in the vicinity of the North Wales station in 1980, which damaged the car beyond repair. On August 29, 2018, car 144
390-402: The Silverliner IV is a windowed body panel plug in the middle of the cars on each side, a provision for high-platform-only center doors which have never been installed, in contrast with New Jersey Transit's similar, contemporary Arrow II and III cars which were built with such doors. Internally, pairs of seats occupy this partitioned area which was intended for passenger flow. The Reading got
420-481: The Silverliner IVs allowed SEPTA to replace most of its remaining PRR MP54s and Reading's pre-war MU fleet save for the 38 rebuilt "Blueliner" cars. While being fitted with an updated propulsion system from General Electric, the Silverliner IVs were nevertheless still delivered with Ignitron tube rectifiers, which were later replaced with silicon controlled rectifiers. A readily apparent external feature of
450-668: The Wikimedia System Administrators, please include the details below. Request from 172.68.168.133 via cp1102 cp1102, Varnish XID 551948594 Upstream caches: cp1102 int Error: 429, Too Many Requests at Thu, 28 Nov 2024 05:54:00 GMT Schunk Group The Schunk Group is a company headquartered in Germany. The most important fields of endeavor are carbon technology and ceramics , environmental simulation and climate technology , sintered metals as well as ultrasonic welding . The Schunk Group has
480-412: The backbone of SEPTA's service plan, with older equipment tending to be used on peak services only. Most SEPTA trains consist of a single pair of Silverliner IVs, with longer trains made up as needed. The single units are most frequently coupled to pairs to make 5 or 3 car trainsets, although single units are run alone on Cynwyd Line service. In 2013, SEPTA announced it had begun the process of replacing
510-411: The car's signature roof hump, and, for the Penn Central cars, a trainline automatic door system which removed the need for train crew to manually open doors at high level platforms. The Silverliner IVs were also the first to be delivered in a married pair configuration, although a minority of cars were outfitted as single units. They were also the first to be equipped with a PA system . The delivery of
540-476: The company's entire assets to the Providential Fund for Company Members. That fund was meant to provide voluntary financial support to employees and former employees or their relatives in case of neediness, invalidity or old age. Today, the registered association Ludwig-Schunk Stiftung (Ludwig Schunk Foundation) performs, as trustee, the tasks set forth in the company founder's will. The Schunk Group
570-564: The course of four years permanent investments were made in the division of high temperature applications. Thanks to this expansion of its capacity at the Heuchelheim site, Schunk today produces the largest carbon fiber plates for the semiconductor and solar industries worldwide. In 2012 Schunk received the state of Hesse's innovation and growth award “Hesse Champion 2012” in the global market leader category for its automotive carbon brushes. 2013 Schunk celebrates its 100th jubilee. 2015 For
600-583: The death of Ludwig Schunk in 1947, the estate of the founder, who had not had any children, passed to the "Providential Fund" of Schunk+Ebe oHG. In 1948 and 1949 a construction program was set up to expand the operation from 500 to 1200 employees. There followed in 1956 the incorporation of Schunk & Ebe S.A. in Brussels , the first foreign subsidiary. At present, Schunk is represented in Europe with 46 operating companies. In 1957 Schunk Electro Carbón S.A. de C.V.
630-407: The firms of Schunk Ultraschalltechnik GmbH and STAPLA Ultraschalltechnik GmbH. The products of this division cover the entire spectrum of welding applications using ultrasonic welding. This likewise includes amalgamation of non-ferrous metals and thermoplastic synthetics. In the late 1970s Schunk developed ultrasonic metal welding to industrial marketability. It is now mainly used to weld cable trees in
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#1732773240502660-417: The first batch of Silverliner IVs in the form of 14 single unit cars produced during 1973. The first two (#9018 and #9019) were unveiled to the press on Thursday, February 21, 1974. These were numbered in series with their existing Silverliner IIs, 9018 through 9031. In 1974-75 the Penn Central took delivery of 34 single units numbered 270 through 303. Delivery of the Silverliner IVs were briefly interrupted by
690-733: The main plant at Reiskirchen-Lindenstruth in Hesse). Weiss Environmental Simulation develops and produces test equipment and systems for environmental simulation. The product program comprises testing systems for temperature and climate testing , weathering , temperature shock , corrosion and long-term testing in all test area sizes as well as major area systems and process integrated systems for environmental simulation and biology. The Air Solutions core business includes development and manufacture of complete ceiling systems for operating rooms, industrial clean room technology and air conditioning of computer rooms. The Schunk Sinter Metals Division of
720-584: The plant. In 2005, the company was awarded the prize of "Hesse Champion" by the prime minister of Hesse, Roland Koch . In 2006 the Schunk Group joined the Make Things initiative of the Verein Deutscher Ingenieure (VDI) (Association of German Engineers). In 2007, the internet portal created by Schunk in the framework of that initiative, www.ingenieurparadies.com (Engineers Paradise), commenced operation. In 2007 EHW Thale Email GmbH
750-529: The production of 70 Arrow II cars for the New Jersey Department of Transportation before the Penn Central received 96 pairs numbered 304 through 399. Finally in 1976 the Reading took delivery of a final batch of 88 pairs numbered 101 through 188. All the IVs were delivered with the circular SEPTA logo on the left, and the Penn Central or Reading logo on the right, of all car sides and ends, although
780-605: The system. In the late 1990s the fleet received its most noticeable upgrade with the original "ketchup and mustard" colored interior replaced with a softer gray motif as well as softer seating. Around 2004 SEPTA began to replace the cowcatcher pilots equipped on the original Reading cars with a bar type pilot to match those on the PRR cars. Starting in 2009 SEPTA began to replace the original Faiveley pantographs with more modern Schunk type units. The Silverliner IV fleet has provided service on all of SEPTA's Regional Rail routes, providing
810-482: Was heavily damaged in an electrical fire at Glenside station . Its mate, car 143, was repaired. Single car 278 was renumbered to 144 and mated to 143. The burnt 144 was renumbered to 278, with the possibility of being converted to a control car for work trains. As of the 2020s, future retirement plans have been announced for the Silverliner IVs, though no timeline has been given yet. Reading electric multiple units Too Many Requests If you report this error to
840-751: Was incorporated in Mexico, becoming the first company on the American continent. In 1969 there followed the founding of the Brazilian company Schunk do Brasil Ltda. in São Paulo. In 1978 what was then Karl Weiss GmbH was taken over. In the same year, Schunk Graphite Technology LLC. was founded in Wisconsin . Schunk's presence in the United States was reinforced in the 1980s and 1990s. Currently, Schunk
870-745: Was restructuring, with the sale of automation technology. In 1997 the acquisition of EHW Thale (sinter metal technology and enamel technology) and the incorporation of Pichit Industrial Works Co Ltd. in Pichit in Thailand followed. Today, Schunk has a presence in Asia with 15 companies. In 1999, Schunk (Aust) Pty. Ltd. was founded in Rowville , Australia. In 2004 the Federal President, in connection with his first official trip through Germany, visited
900-606: Was sold to a group of three private investors. In 2008 Schunk received the VDI's Best Practice Award in the Promoting initiative category for its [1] Engineers Paradise internet portal. The Ministry of the Environment of Baden-Württemberg once again awarded a prize to Schunk for its innovative manufacturing design of a fuel cell stack. In 2010 Schunk completed the largest expansion in its almost 100 years of corporate history. Over
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