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A bogie is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles. Bogies take various forms in various modes of transport. A bogie may remain normally attached or be quickly detachable ; it may contain a suspension within it, or be solid and in turn be suspended ; it may be mounted on a swivel, as traditionally on a railway carriage or locomotive, additionally jointed and sprung, or held in place by other means.
Under the Whyte notation for the classification of steam locomotives, 4-8-4 represents the wheel arrangement of four leading wheels on two axles, eight powered and coupled driving wheels on four axles and four trailing wheels on two axles. The type was first used by the Northern Pacific Railway, and initially named the Northern Pacific, but railfans and railroad employees have shortened the name since its introduction. It is most-commonly known as a Northern.
The Timken Company is a global manufacturer of bearings and power transmission products. Timken operates from 42 countries.
Electro-Motive Corporation produced five 1800 hp B-B experimental passenger train-hauling diesel locomotives in 1935; two company-owned demonstrators, #511 and #512, the Baltimore and Ohio Railroad's #50, and two units for the Atchison, Topeka and Santa Fe Railway, Diesel Locomotive #1. The twin engine power unit layout and multiple unit control systems developed with the B-B locomotives were soon adopted for other locomotives such as the Burlington Route's Zephyr locomotives built by the Budd Company in 1936 and EMC's own EMD E-units introduced in 1937. The B-B locomotives worked as proof-of-concept demonstrators for diesel power with the service loads of full size trains, breaking out of its niche powering the smaller custom Streamliners.
A road switcher is a type of railroad locomotive designed to both haul railcars in mainline service and shunt them in railroad yards. Both type and term are North American in origin, although similar types have been used elsewhere.
The PRR S1 class steam locomotive was a single experimental duplex locomotive of the Pennsylvania Railroad. It was designed to demonstrate the advantages of duplex drives espoused by Baldwin Chief Engineer Ralph P. Johnson. It was the longest and heaviest rigid frame reciprocating steam locomotive that was ever built. The streamlined Art Deco styled shell of the locomotive was designed by Raymond Loewy.
The Union Pacific Railroad 9000 Class was a class of 88 steam locomotives, built by ALCO for the Union Pacific between 1926 and 1930.
The EMD SDP40F was a six-axle 3,000 hp (2.2 MW) C-C diesel–electric locomotive built by General Motors Electro-Motive Division (EMD) from 1973–1974. Based on Santa Fe's EMD FP45, EMD built 150 for Amtrak, the operator of most intercity passenger trains in the United States. Amtrak, a private company but funded by the United States government, had begun operation in 1971 with a fleet of aging diesel locomotives inherited from various private railroads. The SDP40F was the first diesel locomotive built new for Amtrak and for a brief time they formed the backbone of the company's long-distance fleet.
A hot box is the term used when an axle bearing overheats on a piece of railway rolling stock. The term is derived from the journal-bearing trucks used before the mid-20th century. The axle bearings were housed in a box that used oil-soaked rags or cotton to reduce the friction of the axle against the truck frame. When the oil leaked or dried out, the bearings overheated, often starting a fire that could destroy the entire railroad car if not detected early enough.
British Railways built twenty locomotives of the LMS Stanier Black Five type, fitted with Caprotti valve gear, in 1948; the BR Caprotti Black Fives. These were numbered 44738-57, 44686 and 44687. The Black Fives had been fitted with Walschaerts valve gear as standard. In 1947, as part of an experimental programme by George Ivatt to try to improve the already good design, (4)4767 was built with Stephenson link motion. The Caprotti-fitted Black Fives were part of the same programme.
Timken 1111, also called the Timken Four Aces, was a 4-8-4 steam locomotive built in 1930 by American Locomotive Company (Alco) as a demonstration unit for new roller bearings produced by the Timken Roller Bearing Company. It was the first locomotive built with all sealed roller bearings rather than plain bearings or a combination of the two. It was later operated by the Northern Pacific Railroad as their 2626.
Santa Fe 2926 is a former Atchison, Topeka and Santa Fe Railway (ATSF) class 2900 4-8-4 type steam locomotive, built by Baldwin in 1944. It was used to pull passenger and fast freight trains, mostly throughout New Mexico until it was retired from revenue service in 1956. It was subsequently donated to a park in Albuquerque for static display. In 1999, it was purchased by the New Mexico Steam Locomotive and Railroad Historical Society to be rebuilt for operational purposes. After over twenty years of work, the restoration was finally completed, and No. 2926 was steamed up again on July 24, 2021. It will eventually be used in mainline excursion service between Albuquerque and Las Vegas, New Mexico.
The GS-5 was a class of streamlined 4-8-4 "Northern" type steam locomotive operated by the Southern Pacific Railroad (SP) from 1942 to 1958. A total of two were built by the Lima Locomotive Works, numbered 4458 and 4459. GS stands for "Golden State" or "General Service."
Tapered roller bearings are rolling element bearings that can support axial forces as well as radial forces.
Henry Timken was an inventor and businessman who founded the Timken Roller Bearing Company, later called the Timken Company. His family migrated to the United States when he was 7 years old. He began his business career in the St. Louis region. His inventions of an improved carriage spring and an improved roller bearing brought him the money needed to create a company dedicated to the latter.
The Reading T-1 was a class of 4-8-4 "Northern" type steam locomotives owned by the Reading Company. They were rebuilt from 30 "I-10sa" class 2-8-0 "Consolidation" type locomotives between 1945 and 1947. Out of the 30 rebuilt, 4 survive in preservation today, those being numbers 2100, 2101, 2102 and 2124.
The Atchison, Topeka and Santa Fe Railway class 5011 was the last class of steam locomotives to be purchased by AT&SF. The class was introduced by Baldwin Locomotive Works in 1944.
Great Northern 2584 is a 4-8-4 "Northern" type steam locomotive built by the Baldwin Locomotive Works in Philadelphia, Pennsylvania in March 1930 for the Great Northern Railway (GN) as a member of the S-2 class.
The Santa Fe 2900 Class was a series of 30 4-8-4 type steam locomotives built between 1943 and 1944 for Atchison, Topeka and Santa Fe Railroad and pulled freight and passenger trains until retirement in the early to late-1950s.
References
- ↑ Henry Timken German-American Buseness Biographies
- ↑ Stanier locomotives on steamindex.com
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