Meyer locomotive

A Meyer locomotive is a steam locomotive with two separate, arranged as bogies bogies.

The first locomotive of this type was built for the 1851 Semmering Competition Neustadt; the name Meyer is, however, only appeared in 1861, when Jean Jacques Meyer has patented this design.

Meyer

In contrast to most Neustadt Meyer locomotives use the interconnected principle, ie have high and low pressure cylinder, the latter being mostly arranged for reasons of space in the front bogie. Unlike the Mallet locomotives but both suspensions are pivoted, which has the disadvantage of moving high-pressure steam lines with it. Another disadvantage of the Meyer against the Mallet is that the firebox on one of the bogies must be arranged, which limits the depth of the firebox and the volume of the ashtray door.

The cylinders are arranged at Meyer locomotives usually on the inside of the bogies so that the connecting line between high and low pressure cylinders can be very brief. The steam line has in their joints provide ball joints from cast shells, graphite lines for leaks.

The most common Meyer locomotives in Germany are. Saxon of the Maschinenfabrik in Chemnitz for the Royal Saxon State Railways built locomotives of the genera IV K and I TV.

The two self-propelled Bernina steam snow blowers BB R 1051 1052, and later with the Rhaetian Railway in the rose of the Bernina Railway are also constructed according to the Meyer- principle, the Xrot d 9213 is still operational in 2011.

Kitson -Meyer

The company Kitson in Leeds resolved the main disadvantage of the Meyer locomotives, the space limitations at firebox and ash pan by the bogies were further moved apart so that the firebox and ash pan found space between them. This design was called Kitson -Meyer. It was with the arrangement of the cylinders experimented, which were initially placed on the respective rear ends of the bogies - in which the exhaust steam from the rear cylinder was passed directly into the atmosphere and some locomotives (see pictures), so he did not stand for Feueranfachung available - and finally, at the respective outer ends of the bogies. In this last form, the Kitson -Meyer was the precursor type of Garratt locomotives.

Overall, less than 100 locomotives of this type were to displacement by the design Garratt built, most of them for South American railways. The last built Meyer locomotives were manufactured in 1939 by Orenstein & Koppel for the Chilean military railway. However, after the war began, the three vehicles arrived at the Deutsche Reichsbahn and were classified as 99 164.

From the acquired from the Trans Andean railway Kitson -Meyer locomotives are two in Chile (Los Ando and Santiago de Chile) and one in Argentina ( Tafi Viejo) survived.

In 1998, Kirklees Light Railway in England ( newly built ) Kitson -Meyer for 381- mm gauge in operation, which is possibly the largest ever built for this track locomotive in the world.

You Bousquet

Developed in 1905 Gaston You Bousquet ( 1839-1910 ) for the French Northern Railway standard gauge locomotives joint that corresponded in principle to the construction Meyer, however, had some special features. The machines had the wheel arrangement (C1 ' ) ( 1'C ); affixed on the inner side of the bogies are therefore supported by the cylinder wheelsets. Was also unusual arrangement of the front water tanks that were not attached to the main frame, but on the bogie. This reduced the load on the pivot and increased the mass of the bogie, which in turn reduced their rolling tendency. Unlike most of the other locomotives Meyer the buffer beams and adapters were attached to the main frame.

Although the locomotives fulfilled the hopes placed in it, the design was limited to a locomotive type, but it has been procured by other French cars and also by China and - adapted to the local broad gauge - was exported to Spain.

Modified Fairlie

The South African Railways procured from 1925 with the classes FC, ​​FD ( North British manufacturer ) and HF ( Manufacturer Henschel) a total of 16 locomotives, which were referred to as Modified Fairlie, however, had in common with a Fairlie not much. Basically it was Kitson - Meyers with a arranged in front of the smoke chamber water tank. At first glance, the locomotives resembled therefore Garratts; Coal bunker and water tank, however, were built on the bridge frame and not on the bogies. The disadvantage of this design compared to the Garratt were the large overhangs and thus greater load on the trunnion.

The reason for the emergence of these locomotives at a time when the Garratt was already established, were the patents that will Beyer Peacock Garratt had protected so that other manufacturers were forced to deviate from this design.