Mecklenburg III
Encyclopedia
| Mecklenburg III | ||
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| Numbering: | 12–23 | 24–30 |
| Quantity: | 12 | 7 |
| Manufacturer: | Hartmann Sächsische Maschinenfabrik The Sächsische Maschinenfabrik in Chemnitz was one of the most important engineering companies in Saxony in the second half of the 19th century and the first two decades of the 20th century. Including its various predecessor businesses, the firm existed from 1837 until its liquidation in 1930, and... , Chemnitz Chemnitz Chemnitz is the third-largest city of the Free State of Saxony, Germany. Chemnitz is an independent city which is not part of any county and seat of the government region Direktionsbezirk Chemnitz. Located in the northern foothills of the Ore Mountains, it is a part of the Saxon triangle... |
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| Years of manufacture: | 1864+1866 | 1869 |
| Retired: | 1901–1910 | 1903–1910 |
| Wheel arrangement Whyte notation The Whyte notation for classifying steam locomotives by wheel arrangement was devised by Frederick Methvan Whyte and came into use in the early twentieth century encouraged by an editorial in American Engineer and Railroad Journal... : |
2-4-0 2-4-0 Under the Whyte notation for the classification of steam locomotives, 2-4-0 represents the wheel arrangement of two leading wheels on one axle, four powered and coupled driving wheels on two axles, and no trailing wheels.... |
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| Axle arrangement UIC classification The UIC classification of locomotive axle arrangements describes the wheel arrangement of locomotives, multiple units and trams. It is set out in the International Union of Railways "Leaflet 650 - Standard designation of axle arrangement on locomotives and multiple-unit sets". It is used in much... : |
1B n2 | |
| Rail gauge Rail gauge Track gauge or rail gauge is the distance between the inner sides of the heads of the two load bearing rails that make up a single railway line. Sixty percent of the world's railways use a standard gauge of . Wider gauges are called broad gauge; smaller gauges, narrow gauge. Break-of-gauge refers... : |
1435 mm | |
| Length over buffers Buffer (rail transport) A buffer is a part of the buffers-and-chain coupling system used on the railway systems of many countries, among them most of those in Europe, for attaching railway vehicles to one another.... : |
13,750 mm | |
| Height: | 4125 mm | |
| Overall wheelbase Wheelbase In both road and rail vehicles, the wheelbase is the distance between the centers of the front and rear wheels.- Road :In automobiles, the wheelbase is the horizontal distance between the center of the front wheel and the center of the rear wheel... : |
4395 mm | |
| Wheelbase including tender: | 9989 mm | |
| Unladen weight: | 31.30 t | |
| Service weight: | 33.90 t | |
| Adhesive weight: | 22.80 t | |
| Axle load Axle load The axle load of a wheeled vehicle is the total weight felt by the roadway for all wheels connected to a given axle. Viewed another way, it is the fraction of total vehicle weight resting on a given axle... : |
11.40 t | |
| Top speed: | 90 km/h | |
| Coupled wheel diameter: | 1870 mm | |
| Carrying wheel diameter: | 1065 mm | |
| Valve gear Valve gear The valve gear of a steam engine is the mechanism that operates the inlet and exhaust valves to admit steam into the cylinder and allow exhaust steam to escape, respectively, at the correct points in the cycle... : |
Stephenson Stephenson valve gear The Stephenson valve gear or Stephenson link or shifting link is a simple design of valve gear that was widely used throughout the world for all kinds of steam engine. It is named after Robert Stephenson but was actually invented by his employees.... |
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| No. of cylinders: | 2 | |
| Cylinder bore: | 407 mm | |
| Piston stroke: | 560 mm | |
| Boiler Boiler A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications.-Materials:... overpressure Overpressure The term Overpressure is applied to a pressure difference, relative to a "normal" or "ambient" pressure, in various circumstances:* In engineering: the pressure difference over the wall thickness of a pressure vessel... : |
7.31 bar 8.04 bar |
8.77 bar |
| No. of heating tubes: | 188 | |
| Heating tube length: | 3111 mm | 3311 mm |
| Grate area: | 1.25 m² | |
| Radiative heating area: | 7.78 m² | |
| Heating tube area: | 71.64 m² | 77.62 m² |
| Evaporative heating area: | 79.42 m² | 84.40 m² |
| Brake | Schleifer compressed air brake | |
The Grand Duchy of Mecklenburg Friedrich-Franz Railway
Grand Duchy of Mecklenburg Friedrich-Franz Railway
The Grand Duchy of Mecklenburg Friedrich-Franz Railway was the state railway company in Mecklenburg-Schwerin and Mecklenburg-Strelitz...
grouped early, 2-4-0
2-4-0
Under the Whyte notation for the classification of steam locomotives, 2-4-0 represents the wheel arrangement of two leading wheels on one axle, four powered and coupled driving wheels on two axles, and no trailing wheels....
, passenger train locomotives from the Friedrich-Franz Railway into its Class III.
History
When the Güstrow-Neubrandenburg line went into service, it was essential that locomotives were procured that could cope with the inclines in Mecklenburg SwitzerlandMecklenburgische Schweiz
Mecklenburgische Schweiz is an Amt in the district of Rostock, in Mecklenburg-Vorpommern, Germany. The seat of the Amt is in Teterow, itself not part of the Amt.The Amt Mecklenburgische Schweiz consists of the following municipalities:...
without difficulty. The existing 2-2-2
2-2-2
Under the Whyte notation for the classification of steam locomotives, 2-2-2 represents the wheel arrangement of two leading wheels on one axle two powered driving wheels on one axle, and two trailing wheels on one axle. The wheel arrangement both provided more stability and enabled a larger firebox...
locomotives of what later became classes I
Mecklenburg I
The Grand Duchy of Mecklenburg Friedrich-Franz Railway grouped the various 2-2-2 steam locomotives procured between 1848 and 1863 into its Mecklenburg Class I.- History :...
and II were not powerful enough.
To that end the Friedrich-Franz Railway bought 19 2-4-0
2-4-0
Under the Whyte notation for the classification of steam locomotives, 2-4-0 represents the wheel arrangement of two leading wheels on one axle, four powered and coupled driving wheels on two axles, and no trailing wheels....
locomotives from Richard Hartmann
Sächsische Maschinenfabrik
The Sächsische Maschinenfabrik in Chemnitz was one of the most important engineering companies in Saxony in the second half of the 19th century and the first two decades of the 20th century. Including its various predecessor businesses, the firm existed from 1837 until its liquidation in 1930, and...
in Chemnitz
Chemnitz
Chemnitz is the third-largest city of the Free State of Saxony, Germany. Chemnitz is an independent city which is not part of any county and seat of the government region Direktionsbezirk Chemnitz. Located in the northern foothills of the Ore Mountains, it is a part of the Saxon triangle...
in 3 batches in the years 1864, 1866 and 1869. The locomotives were named after north German towns. Two engines were given the names ZWEI HUNDERT ("two hundred") and VIER HUNDERT ("four hundred") based on their factory numbers. The locomotives remained in service until after the turn of the century
Turn of the century
Turn of the century, in its broadest sense, refers to the transition from one century to another. The term is most often used to indicate a non-specific time period either before or after the beginning of a century....
and were retired between 1903 and 1911.
Technical description
The locomotives had an inside forked frameLocomotive frame
A locomotive frame is the structure that forms the backbone of the railway locomotive, giving it strength and supporting the superstructure elements such as a cab, boiler or bodywork. The vast majority of locomotives have had a frame structure of some kind...
. The boiler barrel had three shells. On the centre one there was a large steam dome
Steam dome
A Steam dome is a vessel fitted to the top of the boiler of a steam locomotive. It contains the opening to the main steam pipe and its purpose is to allow this opening to be kept well above the water level in the boiler...
, which was as tall as the short cylindrical smokestack. The steam dome was decorated with brass
Brass
Brass is an alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties.In comparison, bronze is principally an alloy of copper and tin...
bands. The vertical boiler had a safety valve on top.
The twin-cylinder wet steam engine was on the outside. The steam chests and the Stephenson valve gear
Stephenson valve gear
The Stephenson valve gear or Stephenson link or shifting link is a simple design of valve gear that was widely used throughout the world for all kinds of steam engine. It is named after Robert Stephenson but was actually invented by his employees....
were on the inside. The cylinders, which were set horizontally, drove the first coupled axle.
The coupled axles were sprung using leaf springs above the axles. A compensating lever level with the axle boxes linked the two springs. On the final batch of 1869 the springs were located underneath the axle boxes of the coupled wheels. On the carrying axle the springs were above the frame.
The locomotives had a Schleifer compressed air brake. The sandbox
Sandbox
Sandbox may refer to:* Litter box, an indoor box for cats to relieve themselves* Sandpit or sandbox, a wide, shallow playground construction to hold sand often made of wood or plastic...
es were in front of the first driving axle and sanded the wheels from in front.
The engines were equipped with tenders of class 3T 7.9.
See also
- Grand Duchy of Mecklenburg Friedrich-Franz RailwayGrand Duchy of Mecklenburg Friedrich-Franz RailwayThe Grand Duchy of Mecklenburg Friedrich-Franz Railway was the state railway company in Mecklenburg-Schwerin and Mecklenburg-Strelitz...
- List of Mecklenburg locomotives
External links
- There is a relevant English-language forum at Railways of Germany