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South African Class 8 4-8-0
The South African Railways Class 8 4-8-0 of 1902 was a steam locomotive from the pre-Union era in the Cape of Good Hope. In 1902 and 1903, the Cape Government Railways placed 23 8th Class steam locomotives with a Mastodon type wheel arrangement in service, three on the Cape Western System, eight on the Cape Midland System and twelve on the Cape Eastern System. In 1912, when they were assimilated into the South African Railways, they were renumbered, but retained their Class 8 classification.Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer's Office, Pretoria, January 1912, pp. 8, 12, 15, 39-40 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000) Manufacture Evolution The first 8th Class locomotives of the Cape Government Railways (CGR) were Consolidation types, designed by H.M. Beatty, the Chief Locomotive Superintendent of the CGR from 1896 to 1910. They entered service in 1901 and were later to become the South Africa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Type XD Tender
The South African type XD tender was a steam locomotive tender from the pre-Union era in the Cape of Good Hope. The Type XD tender first entered service in 1901, as tenders to the British-built of the three versions of Tenwheeler type steam locomotive which were acquired by the Cape Government Railways in that year. These locomotives were designated Class 6H on the South African Railways in 1912.South African Railways & Harbours/Suid Afrikaanse Spoorweë en Hawens (15 Aug 1941). ''Locomotive Diagram Book/Lokomotiefdiagramboek, 3'6" Gauge/Spoorwydte''. SAR/SAS Mechanical Department/Werktuigkundige Dept. Drawing Office/Tekenkantoor, Pretoria. p. 43.South African Railways & Harbours/Suid Afrikaanse Spoorweë en Hawens (15 Aug 1941). ''Locomotive Diagram Book/Lokomotiefdiagramboek, 2'0" & 3'6" Gauge/Spoorwydte, Steam Locomotives/Stoomlokomotiewe''. SAR/SAS Mechanical Department/Werktuigkundige Dept. Drawing Office/Tekenkantoor, Pretoria. pp. 6a-7a, 41, 43. Manufacturer Type XD t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safety Valve
A safety valve is a valve that acts as a fail-safe. An example of safety valve is a pressure relief valve (PRV), which automatically releases a substance from a boiler, pressure vessel, or other system, when the pressure or temperature exceeds preset limits. Pilot-operated relief valves are a specialized type of pressure safety valve. A leak tight, lower cost, single emergency use option would be a rupture disk. Safety valves were first developed for use on steam boilers during the Industrial Revolution. Early boilers operating without them were prone to explosion unless carefully operated. Vacuum safety valves (or combined pressure/vacuum safety valves) are used to prevent a tank from collapsing while it is being emptied, or when cold rinse water is used after hot CIP (clean-in-place) or SIP (sterilization-in-place) procedures. When sizing a vacuum safety valve, the calculation method is not defined in any norm, particularly in the hot CIP / cold water scenario, but some manu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natal Government Railways
The Natal Government Railways (NGR) was formed in January 1877 in the Colony of Natal. In 1877, the Natal Government Railways acquired the Natal Railway Company for the sum of £40,000, gaining the line from the Point to Durban and from Durban to Umgeni. This move, inspired in part by the neighbouring Cape Prime Minister John Molteno's 1873 establishment of the Cape Government Railways, was intended to drive the extension of Natal's railways inland, towards the Drakensberg and eventually the Orange Free State. The Natal Government Railways also adopted the Cape gauge. The core line went from Durban to Volksrust, but reached Charlestown ( from the border of the South African Republic) in 1891 and was linked to the Witwatersrand in 1895. Other important lines were the one linking with the Orange Free State reaching Harrismith in 1892, as well as the North Coast and South Coast lines. In 1910, the Union of South Africa was formed and in 1912 the NGR combined with the other colonies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saturated Steam
Steam is a substance containing water in the gas phase, and sometimes also an aerosol of liquid water droplets, or air. This may occur due to evaporation or due to boiling, where heat is applied until water reaches the enthalpy of vaporization. Steam that is saturated or superheated is invisible; however, "steam" often refers to wet steam, the visible mist or aerosol of water droplets formed as water vapor condenses. Water increases in volume by 1,700 times at standard temperature and pressure; this change in volume can be converted into mechanical work by steam engines such as reciprocating piston type engines and steam turbines, which are a sub-group of steam engines. Piston type steam engines played a central role in the Industrial Revolution and modern steam turbines are used to generate more than 80% of the world's electricity. If liquid water comes in contact with a very hot surface or depressurizes quickly below its vapor pressure, it can create a steam explosion. Ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class 7 4-8-0
The South African Railways Class 7 4-8-0 of 1892 was a steam locomotive from the pre-Union era in the Cape of Good Hope. In 1892, the Cape Government Railways placed six 7th Class steam locomotives with a 4-8-0 Mastodon type wheel arrangement in service and, until 1893, another 32 were acquired. They were initially placed in service on the Midland System, but were later distributed between the Midland and Eastern Systems. The locomotives were renumbered in 1912, when they were assimilated into the South African Railways, but retained their Class 7 classification.Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer's Office, Pretoria, January 1912, pp. 8, 12, 15, 37 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000) Manufacturers In 1890, Michael Stephens, then Chief Locomotive Superintendent of the Cape Government Railways (CGR), accompanied General Manager C.B. Elliot on a visit to Durban, to examine and report on the new ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class 8X 2-8-0
The South African Railways Class 8X 2-8-0 of 1901 was a steam locomotive from the pre-Union era in the Cape of Good Hope. In 1901 and 1902, the Cape Government Railways placed sixteen 8th Class Consolidation type steam locomotives in service. In 1912, when they were assimilated into the South African Railways, they were renumbered and designated Class 8X.Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 9, 12, 15, 35 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000) Manufacturers The first 8th Class Consolidation type locomotive of the Cape Government Railways (CGR) was designed by H.M. Beatty, the Chief Locomotive Superintendent of the CGR from 1896 to 1910. Sixteen of these engines were ordered from the Schenectady Locomotive Works in the United States of America. In 1901, while they were being built, Schenectady merged with seven other American locomotive builders to form the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Locomotive
A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the locomotive's boiler to the point where it becomes gaseous and its volume increases 1,700 times. Functionally, it is a steam engine on wheels. In most locomotives, the steam is admitted alternately to each end of its cylinders, in which pistons are mechanically connected to the locomotive's main wheels. Fuel and water supplies are usually carried with the locomotive, either on the locomotive itself or in a tender coupled to it. Variations in this general design include electrically-powered boilers, turbines in place of pistons, and using steam generated externally. Steam locomotives were first developed in the United Kingdom during the early 19th century and used for railway transport until the middle of the 20th century. Richard Trevithick ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Colony
The Cape Colony ( nl, Kaapkolonie), also known as the Cape of Good Hope, was a British Empire, British colony in present-day South Africa named after the Cape of Good Hope, which existed from 1795 to 1802, and again from 1806 to 1910, when it united with three other colonies to form the Union of South Africa. The British colony was preceded by an earlier corporate colony that became an Dutch Cape Colony, original Dutch colony of the same name, which was established in 1652 by the Dutch East India Company, Dutch East India Company (VOC). The Cape was under VOC rule from 1652 to 1795 and under rule of the Napoleonic Batavian Republic, Batavia Republic from 1803 to 1806. The VOC lost the colony to Kingdom of Great Britain, Great Britain following the 1795 Invasion of the Cape Colony, Battle of Muizenberg, but it was acceded to the Batavian Republic, Batavia Republic following the 1802 Treaty of Amiens. It was re-occupied by the British following the Battle of Blaauwberg in 1806 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union Of South Africa
The Union of South Africa ( nl, Unie van Zuid-Afrika; af, Unie van Suid-Afrika; ) was the historical predecessor to the present-day Republic of South Africa. It came into existence on 31 May 1910 with the unification of the Cape, Natal, Transvaal, and Orange River colonies. It included the territories that were formerly a part of the South African Republic and the Orange Free State. Following World War I, the Union of South Africa was a signatory of the Treaty of Versailles and became one of the founding members of the League of Nations. It was conferred the administration of South West Africa (now known as Namibia) as a League of Nations mandate. It became treated in most respects as another province of the Union, but it never was formally annexed. Like Canada, Australia and New Zealand, the Union of South Africa was a self-governing dominion of the British Empire. Its full sovereignty was confirmed with the Balfour Declaration of 1926 and the Statute of Westminster 1931. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Railways
Transnet Freight Rail is a South African rail transport company, formerly known as Spoornet. It was part of the South African Railways and Harbours Administration, a state-controlled organisation that employed hundreds of thousands of people for decades from the first half of the 20th century and was widely referred to by the initials SAR&H (SAS&H in Afrikaans). Customer complaints about serious problems with Transnet Freight Rail's service were reported in 2010. Its head office is in Inyanda House in Parktown, Johannesburg. History Railways were first developed in the area surrounding Cape Town and later in Durban around the 1840s. The first line opened in Durban on 27 June 1850. The initial network was created to serve the agricultural production area between Cape Town and Wellington. The news that there were gold deposits in the Transvaal Republic moved the Cape Colony Government (supported by British Government) to link Kimberley as soon as possible by rail to Cape Town ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Janney Coupler
Janney couplers are a semi-automatic form of railway coupling that allow rail cars and locomotives to be securely linked together without rail workers having to get between the vehicles. They are also known as American, AAR, APT, ARA, MCB, knuckle, Buckeye, tightlock (in the UK), Henricot (in Belgium) or Centre Buffer Couplers. Background Janney couplers were first patented in 1873 by Eli H. Janney (). Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; Beard's patents were granted 23 November 1897, which then sold for approximately $50,000, and granted 16 May 1899. In the UK, several versions of Janney couplers are fitted to a limited number of coaches, multiple units, wagons and locomotives. Janney Type E, Type F Interlock, and Type H tightlock couplings are compatible subtypes, each intended for specific rail car types. Prior to the formation of the Association of American Railroads (AAR) these were known as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Coupling
A coupling (or a coupler) is a mechanism typically placed at each end of a railway vehicle that connects them together to form a train. A variety of coupler types have been developed over the course of railway history. Key issues in their design include strength, reliability, ease of making connections and operator safety. The equipment that connects the couplings to the vehicles is the draft gear or draw gear and these must absorb the stresses of coupling and train acceleration. Nomenclature Compatible and similar couplings or couplers are frequently referred to using widely differing make, brand, or regional names, or nicknames, which can make describing standard or typical designs confusing. Dimensions and ratings noted in these articles are usually of nominal or typical components and systems, though standards and practices also vary widely with railway, region, and era. Buffers and chain The basic type of coupling on railways following the British tradition is the bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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