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Locomotive frame of a LNER Gresley Pacific locomotive during construction. 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.
Bowser Manufacturing is a United States manufacturer of model railroad equipment, located in Montoursville, Pennsylvania.Founded in 1946 by Bill Bowser in Redlands, California, he used his skill as a machinist to design and produce one of the first lines of accurately scaled steam locomotive kits in HO scale.
[5] [7]: 18 Early American locomotives had bar frames, made from steel bar; in the 20th century they usually had cast steel frames or, in the final decades of steam locomotive design, a cast steel locomotive bed – a one-piece steel casting for the entire locomotive frame, cylinders, valve chests, steam pipes, and smokebox saddle, all as a ...
A project has now been launched [5] to build a new member of this class (No. 567) to modern engineering standards (using metric steel and specifications) for running on the Great Central Railway. It is a semi-new build locomotive being erected at Ruddington on the GCR Northern section (GCRN - Great Central Railway, Nottingham - GCRN) www.gcrn ...
It was a duplex locomotive, the longest and heaviest rigid frame reciprocating steam locomotive ever built and is referred to as the Pennsylvania Type. This experimental locomotive was exhibited at the 1939 New York World's Fair, and was afterward placed in limited service between Chicago, Illinois, and Crestline, Ohio. The locomotive was too ...
The way the valve controlled the steam entering and leaving the cylinder was known as steam distribution and shown by the shape of the indicator diagram. What happened to the steam inside the cylinder was assessed separately from what happened in the boiler and how much friction the moving machinery had to cope with.
Swindon Works built 260 of these goods locomotives between 1883 and 1899 to a design of William Dean. The 2301 class broke with previous GWR tradition in having inside frames only and changes were made in the boiler design during the period that they were being built. The first twenty engines were originally domeless though all were provided ...
The high pressure necessitated compound expansion; steam being supplied to the two 12-by-26-inch (305 mm × 660 mm) high-pressure inside cylinders and then fed into two larger 20-by-26-inch (508 mm × 660 mm) low-pressure outside cylinders before going to exhaust. High-pressure cylinder diameter was subsequently reduced to 10 in (254 mm).