Under the Whyte notation for the classification of steam locomotives, 0-4-0 represents one of the simplest possible types, that with two axles and four coupled wheels, all of which are driven. The wheels on the earliest four-coupled locomotives were connected by a single gear wheel, but from 1825 the wheels were usually connected with coupling rods to form a single driven set.
0-6-0 is the Whyte notation designation for steam locomotives with a wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles, and no trailing wheels. Historically, this was the most common wheel arrangement used on both tender and tank locomotives in versions with both inside and outside cylinders.
Under the Whyte notation for the classification of locomotives, 4-6-4 represents the wheel arrangement of four leading wheels, six powered and coupled driving wheels and four trailing wheels. In France where the type was first used, it is known as the Baltic while it became known as the Hudson in most of North America.
Under the Whyte notation for the classification of steam locomotives, 2-10-2 represents the wheel arrangement of two leading wheels, ten powered and coupled driving wheels, and two trailing wheels. In the United States of America and elsewhere the 2-10-2 is known as the Santa Fe type, after the Atchison, Topeka and Santa Fe Railway that first used the type in 1903.
Under the Whyte notation for the classification of steam locomotives, 2-6-0 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, six powered and coupled driving wheels on three axles and no trailing wheels. This arrangement is commonly called a Mogul.
Under the Whyte notation for the classification of steam locomotives, 2-8-0 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, eight powered and coupled driving wheels on four axles, and no trailing wheels. In the United States and elsewhere, this wheel arrangement is commonly known as a Consolidation, after the Lehigh and Mahanoy Railroad’s Consolidation, the name of the first 2-8-0.
Under the Whyte notation for the classification of steam locomotives, 2-8-2 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, eight powered and coupled driving wheels on four axles and two trailing wheels on one axle, usually in a trailing truck. This configuration of steam locomotive is most often referred to as a Mikado, frequently shortened to Mike.
Under the Whyte notation for the classification of steam locomotives, 0-8-0 represents the wheel arrangement of no leading wheels, eight powered and coupled driving wheels on four axles and no trailing wheels. Locomotives of this type are also referred to as eight coupled.
The GWR 5700 Class, or 57xx class, is a class of 0-6-0 pannier tank steam locomotive built by the Great Western Railway (GWR) and British Railways (BR) between 1929 and 1950. With 863 built, they were the most prolific class of the GWR, and one of the most numerous classes of British steam locomotive.
The GWR 1400 Class is a class of steam locomotive designed by the Great Western Railway for branch line passenger work. It was originally classified as the 4800 Class when introduced in 1932, and renumbered in 1946.
The Great Western Railway (GWR) 2301 Class or Dean Goods Class is a class of British 0-6-0 steam locomotives.
The Pennsylvania Railroad's class AA1 comprised two experimental electric locomotives constructed in 1905 by the company's own Altoona Works with the assistance of Westinghouse. Intended as testbeds as the PRR began its electrification project, both locomotives remained service into the 1930s.
The Chicago, Milwaukee, St. Paul and Pacific Railroad classes EP-1 and EF-1 comprised 42 boxcab electric locomotives built by the American Locomotive Company (Alco) in 1915. Electrical components were from General Electric. The locomotives were composed of two half-units semi-permanently coupled back-to-back, and numbered as one unit with 'A' and 'B' suffixes. As built, 30 locomotives were assigned to freight service, classified as EF-1 and numbered 10200–10229. The remaining twelve locomotives were assigned to passenger service as class EP-1, numbered 10100–10111, with higher-speed passenger gearing. The design was highly successful, replacing a much larger number of steam locomotives, cutting costs and improving schedules. General Electric self-proclaimed this electric locomotive to be the “King of the Rails” in a silent promotional film from 1915.
The Baltimore & Ohio Railroad's sole class V-2 4-6-4 steam locomotive, No. 2 Lord Baltimore, was constructed by the railroad's own Mount Clare Shops in 1935. It was built under the direction of the road's master mechanic George Emerson, and said to have been inspired by the Great Western Railway locomotive 6000 King George V which had appeared at B&O's 1927 Fair of the Iron Horse. The locomotive was constructed with an experimental water tube firebox, and operated at 350 psi when more typical operating pressure was 250 psi. The 84-inch drive wheels were the biggest ever on B&O steam. It was constructed to haul a new lightweight train, the Royal Blue, between New York City and Washington, DC. Later that year it was sent to the B&O-owned Chicago & Alton Railroad. It returned to the B&O in 1942 and, after work in B&O's shops, was renumbered to #5340 and assigned to service between Washington, DC and Cumberland, Maryland. Shortly afterward, it was withdrawn from service and stored at the railroad's shops in Baltimore, Maryland, and was scrapped in 1949.
On the Baltimore and Ohio Railroad, locomotives were always considered of great importance, and the railroad was involved in many experiments and innovations.
The Class PtL 2/2 locomotives of the Royal Bavarian State Railways were light and very compact superheated steam locomotives for operation on Bavarian branch lines. There were three types in total, of which two were transferred to the Deutsche Reichsbahn-Gesellschaft as Class 98.3 tank locomotives and even survived to join the Deutsche Bundesbahn fleet after the Second World War.
The Landquart-Davos G 3/4, also known as the Rhaetian Railway G 3/4, was a class of lightweight metre gauge 2-6-0T steam locomotives operated from 1889 by the Landquart-Davos Narrow Gauge Railway (LD), 1895 renamed to Rhaetian Railway (RhB) in the Canton of Graubünden, Switzerland.
The GWR Class 850 was an extensive class of small 0-6-0ST locomotives designed by George Armstrong and built at the Wolverhampton railway works of the Great Western Railway between 1874 and 1895. Aptly described as the GWR equivalent of the LB&SCR "Terrier" Class of William Stroudley, their wide availability and lively performance gave them long lives, and eventually they were replaced from 1949 by what were in essence very similar locomotives, the short-lived 1600 Class of Frederick Hawksworth, which in the headlong abandonment of steam outlived them by a mere seven years or so.
Atchison, Topeka and Santa Fe No. 769 is a preserved 769 class 2-8-0 "consolidation" type steam locomotive originally built by the Richmond Locomotive Works in 1900 as one of the Santa Fe Pacific Railroad's final locomotives. It was originally numbered 266 before the SFP had completely merged into its parent company, the Atchison, Topeka and Santa Fe Railway, and the locomotive was renumbered 3045, and it was eventually renumbered again to 769. The locomotive was put into use for short-distance freight trains and for yard switching before being sold again in 1950 to the Albuquerque and Cerrillos Coal Company in Madrid, New Mexico for more yard switching and short distance coal trains. As the 1950s progressed, however, the company shut down due to bankruptcy, and No. 769 was abandoned along with the rest of the locomotive yard and the rest of Madrid. In the late 1970s the town was recovered and converted into a heritage town, and No. 769 was then put on static display just behind the shed it was stored in, which was converted to the Engine House Theatre. In early 2020, No. 769 was selected for a future project to restore it to operating condition to eventually run on reconstructed trackage between Madrid and a nearby BNSF interchange near Los Cerrillos.
Wilmington and Western 58 is an 0-6-0 "Switcher" type steam locomotive, originally built by Baldwin in 1907 for the Atlanta, Birmingham and Atlantic Railway. It subsequently went through several ownership changes in both the steam era and the preservation era before it eventually found its way to the Wilmington and Western Railroad in 1973. Presently, No. 58 is used to operate tourist trains between Wilmington and Hockessin, Delaware.
