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Trolley Poles
A trolley pole is a tapered cylindrical pole of wood or metal, used to transfer electricity from a "live" (electrified) overhead wire to the control and the electric traction motors of a tram or trolley bus. It is a type of current collector. The use of overhead wire in a system of current collection is reputed to be the 1880 invention of Frank J. Sprague, but the first working trolley pole was developed and demonstrated by Charles Van Depoele, in autumn 1885. Middleton, William D. (1967). ''The Time of the Trolley'', pp. 63–65, 67. Milwaukee: Kalmbach Publishing. . History An early development of an experimental tramway in Toronto, Ontario, was built in 1883, having been developed by John Joseph Wright, brother of swindler Whitaker Wright. While Wright may have assisted in the installation of electric railways at the Canadian National Exhibition (CNE), and may even have used a pole system, there is no evidence about this. Likewise, Wright never filed or was issued a paten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CLRV Trolley Pole
The Canadian Light Rail Vehicle (CLRV) and Articulated Light Rail Vehicle (ALRV) were types of tram, streetcars used by the Toronto Transit Commission (TTC) from the late 1970s until they were scrapped in the late 2010s. They were built following the TTC's decision to retain streetcar services in the 1970s, replacing the existing PCC streetcar fleet. Two variants were produced: the standard single-module CLRV (built between 1977 and 1981) and the longer Articulated tram, articulated double-module ALRV (built between 1987 and 1989). The ALRVs were officially retired from regular TTC service on September 2, 2019, with the CLRVs officially retired on December 29, 2019. Both were replaced by the Flexity Outlook (Toronto), Flexity Outlook, a low-floor streetcar first introduced in 2014. History CLRV Starting at the end of the 1970s and into the 1980s, the TTC's fleet of Presidents' Conference Committee (Toronto streetcar), PCC streetcars approached (or exceeded in some cases) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whitaker Wright
James Whitaker Wright (9 February 1846 – 26 January 1904) was a company promoter and swindler, who committed suicide at the Royal Courts of Justice in London immediately following his conviction for fraud. Early life The eldest of five children, he was the son of James Wright, a Methodist Minister, and Matilda Whitaker, a tailor's daughter. He was born in Stafford, and spent his early years in various parts of England with his father. At an early age he was sent to Shireland Hall School in the Staffordshire town of Smethwick, a boarding establishment funded by charitable donations which catered for the sons of clergymen of all denominations. He was instructed in Latin and Greek and was taught how to use a printing press. In 1861, according to the census of that year, he was a printer in Ripon. Between 1866 and 1868, he was a Methodist preacher like his father, but retired due to ill health. He was also the elder brother of John Joseph Wright, who invented the reversible trol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-ended Tram
A tram (also known as a streetcar or trolley in Canada and the United States) is an urban rail transit in which Rolling stock, vehicles, whether individual railcars or multiple-unit trains, run on tramway tracks on urban public streets; some include segments on segregated Right-of-way (property access), right-of-way. The tramlines or tram networks operated as public transport are called tramways or simply trams/streetcars. Because of their close similarities, trams are commonly included in the wider term ''light rail'', which also includes systems separated from other traffic. Tram vehicles are usually lighter and shorter than Main line (railway), main line and rapid transit trains. Most trams use electrical power, usually fed by a Pantograph (transport), pantograph sliding on an overhead line; older systems may use a trolley pole or a bow collector. In some cases, a contact shoe on a third rail is used. If necessary, they may have dual power systems—electricity in city stre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WP Trolleypoles Vancouver 600
WP or wp may refer to: Organisations * Warsaw Pact, a disbanded organization of Central and Eastern European communist states * WP Suspension, a manufacturer of motorcycle suspension components, former name White Power Suspension * , the Reich Party of the German Middle Class, a political party of Weimar Germany * , the Polish Armed Forces * Workers' Party (Singapore), a political party * Workers Party (United States), a defunct political party Science and technology * Watt-peak (Wp), the nominal power of a photovoltaic * Wilting point, in soil moisture determination Computing * Weakest precondition (''wp''), in computer science * Windows Phone, a smartphone operating system * WordPerfect, a word processor * Word processor, software used for the production of printable material * WordPress (wp.org), a content management system Websites * Wikipedia, an online encyclopedia * Wirtualna Polska, a Polish web portal * WordPress.com, a blog hosting provider powered by WordPress Tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Cable
Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of either a positive or negative electric charge produces an electric field. The motion of electric charges is an electric current and produces a magnetic field. In most applications, Coulomb's law determines the force acting on an electric charge. Electric potential is the Work (physics), work done to move an electric charge from one point to another within an electric field, typically measured in volts. Electricity plays a central role in many modern technologies, serving in electric power where electric current is used to energise equipment, and in electronics dealing w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contact Shoe
A current collector (often called a "pickup") is a device used in trolleybuses, trams, electric locomotives and Electric multiple unit, EMUs to carry electric power (Electric current, current) from overhead lines, electric third rails, or ground-level power supply, ground-level power supplies to the electrical equipment of the vehicles. Those for overhead wires are roof-mounted devices, those for rails are mounted on the bogies. Typically, electric current connectors have one or more spring-loaded arms that press a collector or contact shoe against the rail or overhead wire. As the vehicle moves, the contact shoe slides along the wire or rail to draw the electricity needed to run the vehicle's motor. The current collector arms are electrical conductivity, electrically conductive but mounted Electrical insulation, insulated on the vehicle's roof, side or base. An insulated cable connects the collector with the switch, transformer or Electric motor, motor. The Rail profile, stee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milwaukee, Wisconsin
Milwaukee is the List of cities in Wisconsin, most populous city in the U.S. state of Wisconsin. Located on the western shore of Lake Michigan, it is the List of United States cities by population, 31st-most populous city in the United States and the fifth-most populous city in the Midwest with a population of 577,222 at the 2020 United States census, 2020 census. It is the county seat of Milwaukee County, Wisconsin, Milwaukee County. The Milwaukee metropolitan area is the Metropolitan statistical area, 40th-most populous metropolitan area in the U.S. with 1.57 million residents. Founded in the early 19th century and incorporated in 1846, Milwaukee grew rapidly due to its location as a port city. History of Milwaukee, Its history was heavily influenced by German immigrants and it continues to be a Germans in Milwaukee, center for German-American culture, specifically known for Beer in Milwaukee, its brewing industry. The city developed as an industrial powerhouse during the 19t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lemniscate
In algebraic geometry, a lemniscate ( or ) is any of several figure-eight or -shaped curves. The word comes from the Latin , meaning "decorated with ribbons", from the Greek (), meaning "ribbon",. or which alternatively may refer to the wool from which the ribbons were made. Curves that have been called a lemniscate include three quartic plane curves: the hippopede or lemniscate of Booth, the lemniscate of Bernoulli, and the lemniscate of Gerono. The hippopede was studied by Proclus (5th century), but the term "lemniscate" was not used until the work of Jacob Bernoulli in the late 17th century. History and examples Lemniscate of Booth The consideration of curves with a figure-eight shape can be traced back to Proclus, a Greek Neoplatonist philosopher and mathematician who lived in the 5th century AD. Proclus considered the cross-sections of a torus by a plane parallel to the axis of the torus. As he observed, for most such sections the cross section consists of either on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trolley Shoe
A current collector (often called a "pickup") is a device used in trolleybuses, trams, electric locomotives and EMUs to carry electric power (current) from overhead lines, electric third rails, or ground-level power supplies to the electrical equipment of the vehicles. Those for overhead wires are roof-mounted devices, those for rails are mounted on the bogies. Typically, electric current connectors have one or more spring-loaded arms that press a collector or contact shoe against the rail or overhead wire. As the vehicle moves, the contact shoe slides along the wire or rail to draw the electricity needed to run the vehicle's motor. The current collector arms are electrically conductive but mounted insulated on the vehicle's roof, side or base. An insulated cable connects the collector with the switch, transformer or motor. The steel rails of the tracks act as the electrical return. Pantographs and poles Electric vehicles that collect their current from an overhead li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphite
Graphite () is a Crystallinity, crystalline allotrope (form) of the element carbon. It consists of many stacked Layered materials, layers of graphene, typically in excess of hundreds of layers. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on a large scale (1.3million metric tons per year in 2022) for uses in many critical industries including refractories (50%), lithium-ion batteries (18%), foundries (10%), and lubricants (5%), among others (17%). Graphite converts to diamond under extremely high pressure and temperature. Graphite's low cost, thermal and chemical inertness and characteristic conductivity of heat and electricity finds numerous applications in high energy and high temperature processes. Types and varieties Graphite can occur naturally or be produced synthetically. Natural graphite is obtained from naturally occurring geologic deposits and synthetic graphite is produced t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arcing
An electric arc (or arc discharge) is an electrical breakdown of a gas that produces a prolonged electrical discharge. The current through a normally nonconductive medium such as air produces a plasma, which may produce visible light. An arc discharge is initiated either by thermionic emission or by field emission. After initiation, the arc relies on thermionic emission of electrons from the electrodes supporting the arc. An arc discharge is characterized by a lower voltage than a glow discharge. An archaic term is voltaic arc, as used in the phrase "voltaic arc lamp". Techniques for arc suppression can be used to reduce the duration or likelihood of arc formation. In the late 19th century, electric arc lighting was in wide use for public lighting. Some low-pressure electric arcs are used in many applications. For example, fluorescent tubes, mercury, sodium, and metal-halide lamps are used for lighting; xenon arc lamps have been used for movie projectors. Electric ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trolley Wheel
Trolley may refer to: Vehicles and components * Tram, or trolley or streetcar, a rail vehicle that runs on tramway tracks * Trolleybus, or trolley, an electric bus drawing power from overhead wires using trolley poles ** Trolleytruck, a trolleybus-like vehicle used for carrying cargo * Tourist trolley, a rubber-tired bus designed to resemble an old-style streetcar or tram * Trolley (horse-drawn), a goods vehicle with four wheels of equal size mounted underneath it * Rail push trolley, a small vehicle for inspecting rail lines Tools * Airline service trolley, a small serving cart used by flight attendants inside an aircraft * Boat dolly, or trolley, a device for launching small boats into the water * Creeper (tool), a low-profile, wheeled platform used by auto mechanics * Flatbed trolley, or dray, for freight transport in distribution environments ** Piano trolley, a device for moving pianos * Golf trolley, a trolley designed for carrying a golf equipment * Laptop charging t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
