Misplaced Pages

#48951

57-552: Peckett and Sons was a locomotive manufacturer at the Atlas Locomotive Works on Deep Pit Road between Fishponds and St. George , Bristol , England . The company began trading in 1864 at the Atlas Engine Works, St. George, Bristol, as Fox, Walker and Company , building four and six-coupled saddle tank engines for industrial use. They also built stationary engines and pioneered steam tramcars,

114-557: A branch line starting just south west of Kingswood junction on the Midland line and ran for about 1 mile (1.6 km) in a generally eastward direction. It also served some collieries in the Speedwell area. The only evidence remaining of this line is a bridge abutment on Whitefield Road. During the two World Wars , the works were especially busy, but by 1950 trade had largely dried up. Although in 1956 an attempt had been made to enter

171-480: A conventional diesel or electric locomotive would be unsuitable. An example is maintenance trains on electrified lines when the electricity supply is turned off. Another use is in industrial facilities where a combustion-powered locomotive (i.e., steam- or diesel-powered ) could cause a safety issue due to the risks of fire, explosion or fumes in a confined space. Battery locomotives are preferred for mines where gas could be ignited by trolley-powered units arcing at

228-463: A diesel–electric locomotive ( E 2 original number Юэ 001/Yu-e 001) started operations. It had been designed by a team led by Yury Lomonosov and built 1923–1924 by Maschinenfabrik Esslingen in Germany. It had 5 driving axles (1'E1'). After several test rides, it hauled trains for almost three decades from 1925 to 1954. An electric locomotive is a locomotive powered only by electricity. Electricity

285-423: A ground and polished journal that is integral to the axle. The other side of the housing has a tongue-shaped protuberance that engages a matching slot in the truck (bogie) bolster, its purpose being to act as a torque reaction device, as well as a support. Power transfer from motor to axle is effected by spur gearing , in which a pinion on the motor shaft engages a bull gear on the axle. Both gears are enclosed in

342-410: A high ride quality and less electrical equipment; but EMUs have less axle weight, which reduces maintenance costs, and EMUs also have higher acceleration and higher seating capacity. Also some trains, including TGV PSE , TGV TMST and TGV V150 , use both non-passenger power cars and additional passenger motor cars. Locomotives occasionally work in a specific role, such as: The wheel arrangement of

399-550: A higher power-to-weight ratio than DC motors and, because of the absence of a commutator , were simpler to manufacture and maintain. However, they were much larger than the DC motors of the time and could not be mounted in underfloor bogies : they could only be carried within locomotive bodies. In 1894, Hungarian engineer Kálmán Kandó developed a new type 3-phase asynchronous electric drive motors and generators for electric locomotives. Kandó's early 1894 designs were first applied in

456-498: A larger locomotive named Galvani , exhibited at the Royal Scottish Society of Arts Exhibition in 1841. The seven-ton vehicle had two direct-drive reluctance motors , with fixed electromagnets acting on iron bars attached to a wooden cylinder on each axle, and simple commutators . It hauled a load of six tons at four miles per hour (6 kilometers per hour) for a distance of one and a half miles (2.4 kilometres). It

513-410: A liquid-tight housing containing lubricating oil. The type of service in which the locomotive is used dictates the gear ratio employed. Numerically high ratios are commonly found on freight units, whereas numerically low ratios are typical of passenger engines. Electricity is typically generated in large and relatively efficient generating stations , transmitted to the railway network and distributed to

570-486: A locomotive describes how many wheels it has; common methods include the AAR wheel arrangement , UIC classification , and Whyte notation systems. In the second half of the twentieth century remote control locomotives started to enter service in switching operations, being remotely controlled by an operator outside of the locomotive cab. The main benefit is one operator can control the loading of grain, coal, gravel, etc. into

627-404: A number of important innovations including the use of high-pressure steam which reduced the weight of the engine and increased its efficiency. In 1812, Matthew Murray 's twin-cylinder rack locomotive Salamanca first ran on the edge-railed rack-and-pinion Middleton Railway ; this is generally regarded as the first commercially successful locomotive. Another well-known early locomotive

SECTION 10

#1732797599049

684-403: A separate fourth rail for this purpose. The type of electrical power used is either direct current (DC) or alternating current (AC). Various collection methods exist: a trolley pole , which is a long flexible pole that engages the line with a wheel or shoe; a bow collector , which is a frame that holds a long collecting rod against the wire; a pantograph , which is a hinged frame that holds

741-483: A short three-phase AC tramway in Evian-les-Bains (France), which was constructed between 1896 and 1898. In 1918, Kandó invented and developed the rotary phase converter , enabling electric locomotives to use three-phase motors whilst supplied via a single overhead wire, carrying the simple industrial frequency (50 Hz) single phase AC of the high voltage national networks. In 1896, Oerlikon installed

798-522: A significantly larger workforce is required to operate and service them. British Rail figures showed that the cost of crewing and fuelling a steam locomotive was about two and a half times larger than the cost of supporting an equivalent diesel locomotive, and the daily mileage they could run was lower. Between about 1950 and 1970, the majority of steam locomotives were retired from commercial service and replaced with electric and diesel–electric locomotives. While North America transitioned from steam during

855-457: Is a rail transport vehicle that provides the motive power for a train . If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit , motor coach , railcar or power car ; the use of these self-propelled vehicles is increasingly common for passenger trains , but rare for freight trains . Traditionally, locomotives pulled trains from the front. However, push-pull operation has become common, where

912-456: Is common to classify locomotives by their source of energy. The common ones include: A steam locomotive is a locomotive whose primary power source is a steam engine . The most common form of steam locomotive also contains a boiler to generate the steam used by the engine. The water in the boiler is heated by burning combustible material – usually coal, wood, or oil – to produce steam. The steam moves reciprocating pistons which are connected to

969-416: Is supplied to moving trains with a (nearly) continuous conductor running along the track that usually takes one of three forms: an overhead line , suspended from poles or towers along the track or from structure or tunnel ceilings; a third rail mounted at track level; or an onboard battery . Both overhead wire and third-rail systems usually use the running rails as the return conductor but some systems use

1026-522: Is that these power cars are integral part of a train and are not adapted for operation with any other types of passenger coaches. On the other hand, many high-speed trains such as the Shinkansen network never use locomotives. Instead of locomotive-like power-cars, they use electric multiple units (EMUs) or diesel multiple units (DMUs) – passenger cars that also have traction motors and power equipment. Using dedicated locomotive-like power cars allows for

1083-590: The EMD FL9 and Bombardier ALP-45DP There are three main uses of locomotives in rail transport operations : for hauling passenger trains, freight trains, and for switching (UK English: shunting). Freight locomotives are normally designed to deliver high starting tractive effort and high sustained power. This allows them to start and move long, heavy trains, but usually comes at the cost of relatively low maximum speeds. Passenger locomotives usually develop lower starting tractive effort but are able to operate at

1140-674: The Medieval Latin motivus 'causing motion', and is a shortened form of the term locomotive engine , which was first used in 1814 to distinguish between self-propelled and stationary steam engines . Prior to locomotives, the motive force for railways had been generated by various lower-technology methods such as human power, horse power, gravity or stationary engines that drove cable systems. Few such systems are still in existence today. Locomotives may generate their power from fuel (wood, coal, petroleum or natural gas), or they may take power from an outside source of electricity. It

1197-500: The traction motors and axles adapts the power output to the rails for freight or passenger service. Passenger locomotives may include other features, such as head-end power (also referred to as hotel power or electric train supply) or a steam generator . Some locomotives are designed specifically to work steep grade railways , and feature extensive additional braking mechanisms and sometimes rack and pinion. Steam locomotives built for steep rack and pinion railways frequently have

SECTION 20

#1732797599049

1254-408: The 1950s, and continental Europe by the 1970s, in other parts of the world, the transition happened later. Steam was a familiar technology that used widely-available fuels and in low-wage economies did not suffer as wide a cost disparity. It continued to be used in many countries until the end of the 20th century. By the end of the 20th century, almost the only steam power remaining in regular use around

1311-648: The 40 km Burgdorf—Thun line , Switzerland. The first implementation of industrial frequency single-phase AC supply for locomotives came from Oerlikon in 1901, using the designs of Hans Behn-Eschenburg and Emil Huber-Stockar ; installation on the Seebach-Wettingen line of the Swiss Federal Railways was completed in 1904. The 15 kV, 50 Hz 345 kW (460 hp), 48 tonne locomotives used transformers and rotary converters to power DC traction motors. Italian railways were

1368-752: The United Kingdom was a petrol–mechanical locomotive built by the Maudslay Motor Company in 1902, for the Deptford Cattle Market in London . It was an 80 hp locomotive using a three-cylinder vertical petrol engine, with a two speed mechanical gearbox. Diesel locomotives are powered by diesel engines . In the early days of diesel propulsion development, various transmission systems were employed with varying degrees of success, with electric transmission proving to be

1425-813: The boiler tilted relative to the locomotive frame , so that the boiler remains roughly level on steep grades. Locomotives are also used on some high-speed trains. Some of them are operated in push-pull formation with trailer control cars at another end of a train, which often have a cabin with the same design as a cabin of locomotive; examples of such trains with conventional locomotives are Railjet and Intercity 225 . Also many high-speed trains, including all TGV , many Talgo (250 / 350 / Avril / XXI), some Korea Train Express , ICE 1 / ICE 2 and Intercity 125 , use dedicated power cars , which do not have places for passengers and technically are special single-ended locomotives. The difference from conventional locomotives

1482-434: The cars. In addition, the same operator can move the train as needed. Thus, the locomotive is loaded or unloaded in about a third of the time. [REDACTED] Media related to Locomotives at Wikimedia Commons Stationary steam engine They were introduced during the 18th century and widely made for the whole of the 19th century and most of the first half of the 20th century, only declining as electricity supply and

1539-460: The center section would have a 200-ton reactor chamber and steel walls 5 feet thick to prevent releases of radioactivity in case of accidents. He estimated a cost to manufacture atomic locomotives with 7000 h.p. engines at approximately $ 1,200,000 each. Consequently, trains with onboard nuclear generators were generally deemed unfeasible due to prohibitive costs. In 2002, the first 3.6 tonne, 17 kW hydrogen (fuel cell) -powered mining locomotive

1596-407: The collecting shoes against the wire in a fixed geometry; or a contact shoe , which is a shoe in contact with the third rail. Of the three, the pantograph method is best suited for high-speed operation. Electric locomotives almost universally use axle-hung traction motors, with one motor for each powered axle. In this arrangement, one side of the motor housing is supported by plain bearings riding on

1653-455: The collection shoes, or where electrical resistance could develop in the supply or return circuits, especially at rail joints, and allow dangerous current leakage into the ground. Battery locomotives in over-the-road service can recharge while absorbing dynamic-braking energy. The first known electric locomotive was built in 1837 by chemist Robert Davidson of Aberdeen , and it was powered by galvanic cells (batteries). Davidson later built

1710-520: The diesel-mechanical market, the last steam engine was produced in 1958 and the company was taken over by Reed Crane & Hoist Co Ltd on 23 October 1961, which itself later went into liquidation. Despite hard work and poor maintenance, the engines were long-lasting. Many Peckett locomotives survive working on today's heritage railways around the world. 51°28′13.24″N 2°32′28.9″W  /  51.4703444°N 2.541361°W  / 51.4703444; -2.541361 Locomotive A locomotive

1767-405: The driving wheels by means of connecting rods, with no intervening gearbox. This means the combination of starting tractive effort and maximum speed is greatly influenced by the diameter of the driving wheels. Steam locomotives intended for freight service generally have smaller diameter driving wheels than passenger locomotives. In diesel–electric and electric locomotives the control system between

Peckett and Sons - Misplaced Pages Continue

1824-524: The early 1950s, Lyle Borst of the University of Utah was given funding by various US railroad line and manufacturers to study the feasibility of an electric-drive locomotive, in which an onboard atomic reactor produced the steam to generate the electricity. At that time, atomic power was not fully understood; Borst believed the major stumbling block was the price of uranium. With the Borst atomic locomotive,

1881-747: The first being tested in Bristol in 1877. Much of their output was exported, mostly 0-6-0 , with some 0-4-0 , 2-4-0 and 0-4-2 . In 1878 they produced six 18 in ( 457 mm ) gauge 2-4-2 trench engines for the Royal Engineers at Chatham using Henry Handyside's steep gradient apparatus. They also produced nine 0-6-0 ST s for the Somerset and Dorset Railway . They were taken over by Thomas Peckett in 1880, becoming Peckett and Sons, Atlas Engine Works, Bristol . The company acquired limited liability some years later. By 1900

1938-520: The first commercial example of the system on the Lugano Tramway . Each 30-tonne locomotive had two 110 kW (150 hp) motors run by three-phase 750 V 40 Hz fed from double overhead lines. Three-phase motors run at constant speed and provide regenerative braking , and are well suited to steeply graded routes, and the first main-line three-phase locomotives were supplied by Brown (by then in partnership with Walter Boveri ) in 1899 on

1995-514: The first in the world to introduce electric traction for the entire length of a main line rather than just a short stretch. The 106 km Valtellina line was opened on 4 September 1902, designed by Kandó and a team from the Ganz works. The electrical system was three-phase at 3 kV 15 Hz. The voltage was significantly higher than used earlier and it required new designs for electric motors and switching devices. The three-phase two-wire system

2052-400: The high speeds required to maintain passenger schedules. Mixed-traffic locomotives (US English: general purpose or road switcher locomotives) meant for both passenger and freight trains do not develop as much starting tractive effort as a freight locomotive but are able to haul heavier trains than a passenger locomotive. Most steam locomotives have reciprocating engines, with pistons coupled to

2109-500: The internal combustion engine became more widespread. There are different patterns of stationary steam engines, distinguished by the layout of the cylinders and crankshaft : Stationary engines may be classified by secondary characteristics as well: When stationary engines had multiple cylinders, they could be classified as: An engine could be run in simple or condensing mode: Stationary engines may also be classified by their application: Stationary engines could be classified by

2166-441: The locomotive's main wheels, known as the " driving wheels ". Both fuel and water supplies are carried with the locomotive, either on the locomotive itself, in bunkers and tanks , (this arrangement is known as a " tank locomotive ") or pulled behind the locomotive, in tenders , (this arrangement is known as a " tender locomotive "). The first full-scale working railway steam locomotive was built by Richard Trevithick in 1802. It

2223-675: The locomotives were retired shortly afterward. All four locomotives were donated to museums, but one was scrapped. The others can be seen at the Boone and Scenic Valley Railroad , Iowa, and at the Western Railway Museum in Rio Vista, California. The Toronto Transit Commission previously operated a battery electric locomotive built by Nippon Sharyo in 1968 and retired in 2009. London Underground regularly operates battery–electric locomotives for general maintenance work. In

2280-494: The most popular. In 1914, Hermann Lemp , a General Electric electrical engineer, developed and patented a reliable direct current electrical control system (subsequent improvements were also patented by Lemp). Lemp's design used a single lever to control both engine and generator in a coordinated fashion, and was the prototype for all diesel–electric locomotive control. In 1917–18, GE produced three experimental diesel–electric locomotives using Lemp's control design. In 1924,

2337-688: The power supply of choice for subways, abetted by the Sprague's invention of multiple-unit train control in 1897. The first use of electrification on a main line was on a four-mile stretch of the Baltimore Belt Line of the Baltimore & Ohio (B&O) in 1895 connecting the main portion of the B&;O to the new line to New York through a series of tunnels around the edges of Baltimore's downtown. Three Bo+Bo units were initially used, at

Peckett and Sons - Misplaced Pages Continue

2394-425: The south end of the electrified section; they coupled onto the locomotive and train and pulled it through the tunnels. DC was used on earlier systems. These systems were gradually replaced by AC. Today, almost all main-line railways use AC systems. DC systems are confined mostly to urban transit such as metro systems, light rail and trams, where power requirement is less. The first practical AC electric locomotive

2451-454: The train may have a locomotive (or locomotives) at the front, at the rear, or at each end. Most recently railroads have begun adopting DPU or distributed power. The front may have one or two locomotives followed by a mid-train locomotive that is controlled remotely from the lead unit. The word locomotive originates from the Latin loco 'from a place', ablative of locus 'place', and

2508-464: The trains. Some electric railways have their own dedicated generating stations and transmission lines but most purchase power from an electric utility . The railway usually provides its own distribution lines, switches and transformers . Electric locomotives usually cost 20% less than diesel locomotives, their maintenance costs are 25–35% lower, and cost up to 50% less to run. The earliest systems were DC systems. The first electric passenger train

2565-519: The two companies had built over 400 locomotives. The company continued producing a variety of small industrial and shunting engines at their factory located between Fishponds and Kingswood in Bristol. They became specialists in the field, with very precise specifications and standardisation of parts. The largest engine was an 0-8-0 built in 1931 for the Christmas Island Phosphate Company. The works were served by

2622-433: The world was on heritage railways . Internal combustion locomotives use an internal combustion engine , connected to the driving wheels by a transmission. They typically keep the engine running at a near-constant speed whether the locomotive is stationary or moving. Internal combustion locomotives are categorised by their fuel type and sub-categorised by their transmission type. The first internal combustion rail vehicle

2679-705: Was Puffing Billy , built 1813–14 by engineer William Hedley for the Wylam Colliery near Newcastle upon Tyne . This locomotive is the oldest preserved, and is on static display in the Science Museum, London. George Stephenson built Locomotion No. 1 for the Stockton & Darlington Railway in the north-east of England, which was the first public steam railway in the world. In 1829, his son Robert built The Rocket in Newcastle upon Tyne. Rocket

2736-502: Was a kerosene -powered draisine built by Gottlieb Daimler in 1887, but this was not technically a locomotive as it carried a payload. The earliest gasoline locomotive in the western United States was built by the Best Manufacturing Company in 1891 for San Jose and Alum Rock Railroad . It was only a limited success and was returned to Best in 1892. The first commercially successful petrol locomotive in

2793-789: Was constructed for the Coalbrookdale ironworks in Shropshire in England though no record of it working there has survived. On 21 February 1804, the first recorded steam-hauled railway journey took place as another of Trevithick's locomotives hauled a train from the Penydarren ironworks, in Merthyr Tydfil , to Abercynon in South Wales. Accompanied by Andrew Vivian , it ran with mixed success. The design incorporated

2850-671: Was demonstrated in Val-d'Or , Quebec . In 2007 the educational mini-hydrail in Kaohsiung , Taiwan went into service. The Railpower GG20B finally is another example of a fuel cell–electric locomotive. There are many different types of hybrid or dual-mode locomotives using two or more types of motive power. The most common hybrids are electro-diesel locomotives powered either from an electricity supply or else by an onboard diesel engine . These are used to provide continuous journeys along routes that are only partly electrified. Examples include

2907-471: Was designed by Charles Brown , then working for Oerlikon , Zürich. In 1891, Brown had demonstrated long-distance power transmission, using three-phase AC , between a hydro-electric plant at Lauffen am Neckar and Frankfurt am Main West, a distance of 280 km. Using experience he had gained while working for Jean Heilmann on steam–electric locomotive designs, Brown observed that three-phase motors had

SECTION 50

#1732797599049

2964-650: Was entered into, and won, the Rainhill Trials . This success led to the company emerging as the pre-eminent early builder of steam locomotives used on railways in the UK, US and much of Europe. The Liverpool & Manchester Railway , built by Stephenson, opened a year later making exclusive use of steam power for passenger and goods trains . The steam locomotive remained by far the most common type of locomotive until after World War II . Steam locomotives are less efficient than modern diesel and electric locomotives, and

3021-426: Was presented by Werner von Siemens at Berlin in 1879. The locomotive was driven by a 2.2 kW, series-wound motor, and the train, consisting of the locomotive and three cars, reached a speed of 13 km/h. During four months, the train carried 90,000 passengers on a 300-metre-long (984 feet) circular track. The electricity (150 V DC) was supplied through a third insulated rail between the tracks. A contact roller

3078-943: Was tested on the Edinburgh and Glasgow Railway in September of the following year, but the limited power from batteries prevented its general use. Another example was at the Kennecott Copper Mine , Latouche, Alaska , where in 1917 the underground haulage ways were widened to enable working by two battery locomotives of 4 + 1 ⁄ 2 tons. In 1928, Kennecott Copper ordered four 700-series electric locomotives with on-board batteries. These locomotives weighed 85 tons and operated on 750-volt overhead trolley wire with considerable further range whilst running on batteries. The locomotives provided several decades of service using Nickel–iron battery (Edison) technology. The batteries were replaced with lead-acid batteries , and

3135-650: Was the first in the world in regular service powered from an overhead line. Five years later, in the U.S. electric trolleys were pioneered in 1888 on the Richmond Union Passenger Railway , using equipment designed by Frank J. Sprague . The first electrically worked underground line was the City & South London Railway , prompted by a clause in its enabling act prohibiting use of steam power. It opened in 1890, using electric locomotives built by Mather & Platt . Electricity quickly became

3192-546: Was used on several railways in Northern Italy and became known as "the Italian system". Kandó was invited in 1905 to undertake the management of Società Italiana Westinghouse and led the development of several Italian electric locomotives. A battery–electric locomotive (or battery locomotive) is an electric locomotive powered by onboard batteries ; a kind of battery electric vehicle . Such locomotives are used where

3249-638: Was used to collect the electricity. The world's first electric tram line opened in Lichterfelde near Berlin, Germany, in 1881. It was built by Werner von Siemens (see Gross-Lichterfelde Tramway and Berlin Straßenbahn ). The Volk's Electric Railway opened in 1883 in Brighton, and is the oldest surviving electric railway. Also in 1883, Mödling and Hinterbrühl Tram opened near Vienna in Austria. It

#48951