Two and three stages were used in ships, for example. Stateside switchers 3 a baldwin 2442 mallet the mallet type of locomotive was introduced to meet a growing demand for a locomotive having exceptionally high tractive effort, combined with the ability to readily traverse sharp curves. The mallet locomotive is a type of articulated steam railway locomotive, invented by the swiss engineer anatole mallet. Union pacific big boy 4792 views transportation air water earth the american locomotive company 4000class 4884 locomotive, popularly named big boy, is an articulated, coalfired, steam locomotive manufactured between 1941 and 1944 and operated by the union pacific railroad until 1959. As the distinctive features of the mallet locomotive have been described, the articulated boiler connection which does not form a part of that locomotive is given here, also the arrangement of the superheater and reheater. The big boy utilized a 4884 wheel arrangement and was the only locomotive to do so. Classic trains magazine celebrates the golden years of railroading including the north american railroad scene from the late 1920s to the late 1970s. By a mallet locomotive, one usually means an articulated steam locomotive with two sets of driving and coupled wheels, the front one in a bogie and the rear in a conventional rigid frame, all with or without pony wheels. Baldwin locomotive works collection is devoted to the largest and most influential manufacturer of steam railroad locomotive engines in the world. Builders photograph of a usra 2882 compound articulated freight locomotive. Later, the compound expansion principle would be applied by anatole mallet to the articulated locomotive design that bears his name.
During the late 1800s, a belgian engineer, anatole mallet, developed a system to use the steam generated by a locomotive more ef. The process for a metal hammer handle is very similar to the creation of. Collection of baldwin locomotive works records, 18561956 a. It is a fourcylinder simple articulated 4884 big boy type built in 1941 by the american locomotive company alco of schenectady, new york. This virginian design represented the virtual limit of size for the conventional mallet locomotive. Dieselelectric locomotives introduction an understanding of the structure of a locomotive mechanically and electrically is essential to a person attempting to perform maintenance and repair services on it. High power motor, with cardanic transmission, which activated two powered groups of wheels for a total of 4 axles per group. Union pacific 4884 big boy locomotive old machine press.
Samuel vauclain of baldwin developed the compound principle to single coupled locomotives and adapted many of his improvements to the articulated design. Although it was articulated, the big boy was not a compound steam engine, which is the second hallmark of a true mallet. The first road to begin experimenting with the design was the santa fe in the early 20th century to create a more powerful, mallet locomotive a relatively new concept at the time. Six locomotives seized by the army fieldbuses in 1914 did not return from the deployment in france after the first world war. A perfect and impressive reproduction of the prototype nr 2197, quite unique in its kind. Mallet articulated compound locomotive baldwin locomotive company. The strongest malletlocomotive of the hungarian state railway mav was mav 601, a 1cc type steam. The specific way each feature is presented and the material covered in these sites are the best reason for downloading wood carving mallet plans. The design is a development of the single fairlie, and is sometimes, and perhaps more properly known as the mason fairlie. The mallet pronounced malay was a unique steam locomotive design that was a type of articulated design which used compound steam. Mls steamclass 2004 build a live steam accucraft ruby kit. The best turned wooden mallet plans pdf free download pdf and video. Mallet engine house sss weathering, detailing, and.
The last steam locomotive built for domestic use was built to this design in 1953. The mallet locomotive is a type of articulated steam railway locomotive, invented by the swiss engineer anatole mallet 18371919 the articulation was achieved by supporting the front of the locomotive on an extended bissel truck. The steam was used twice, utilizing four cylinders, two high pressure and two low pressure. Climax locomotive wikimili, the best wikipedia reader. At the front of the engine was a fourwheel leading truck that had 36 in. A prime example of something that is near impossible to make, is the window spacings on the mallet house. Collection of baldwin locomotive works records, 18561956 a guide. They, too, have proved highly favorable to the coal.
Built in 1943, it went directly to helping transport materials during the war. In this construction the highpressure cylinder saddle serves as a support for the cylinders and boiler, and constitutes part of the main frame of the locomotive. The locomotive gets is name from the person who invented it, anatole mallet of switzerland. Locomotive design trains magazine trains news wire. May 25, 2015 mallet steam locomotive 11sm vulkan express. After this process the wooden handle is clamped and a diagonal slot created at the top which is where the hammerhead and handle will be united. Anatole mallet having invented the worlds first successful compound steam locomotive, in 1884 patented a design for an articulated compound system with a rigid chassis at the rear carrying two highpressure cylinders plus two lowpressure ones mounted on an articulated front driving truck. In 1886, the northern pacific railroad and the baldwin locomotive works announced new titleholders for the largest locomotives in the united states. This locomotive is a usra 2882 compound mallet type. The locomotive and tender weigh 412 ounces and are permanently tethered. The overhang of the boiler at the front end on curves was excessive, and the low pressure cylinders were so large that it was impossible to design adequate valves for them, which meant that they worked efficiently only at low speeds and long cut. Jun 18, 2006 classic trains magazine celebrates the golden years of railroading including the north american railroad scene from the late 1920s to the late 1970s.
The most common types of hammer handles are wood and metal with the wood type simply shaved into the desired shape on a lathe. Figure 5 shows the latest design of articulated frame connection used on mallet articulated locomotives built by the baldwin locomotive works. The working of the two cylinders produces a fairlyuniform torque on a continuous basis. This distincive sound was created specifically for. Your locomotive is designed to operate on 818 volts alternating. Locomotive compound type mallet a 4 cylindres exterieurs, 44 roues accouplees. This distincive sound was created specifically for aristocrafts mallet locomotive, pictured above.
Union pacific 4014, also known as the big boy, is a steam locomotive owned and operated by the union pacific railroad. The last steam locomotive built for domestic freight. Blue mountain and reading railroad 462 pacific locomotive. Malley locomotives trains magazine trains news wire. The baldwin locomotive works 1912mallet articulated. Learn the art of woodworking using these stepbystep woodworking plans.
Giant steam locomotives, colorful streamliners, great passenger trains, passenger terminals, timeworn railroad cabooses, recollections of railroaders and trainwatchers. Seventeen of the big boy engines were scrapped, while the remaining eight were put on display in various museums. Search for wood carving mallet plans now pdf basically, anyone who is interested in building with wood can learn it successfully with the help of free woodworking plans which are found on the net. Mallet locomotives other types of modern freight locomotives built in roanoke shops include the y5, y6a and y6b. Since the mallet locomotives formed the rear wheel of the locomotive, they received new boilers between 1924 and 1926. Mallet articulated compound 2662 built for the great northern railroad in 1904. If i had done them according to the drawings then the spacing would be less than 18. The mallet locomotive as a factor in railway location. The locomotive was only one application of compounding. When peace came, the mallet was diverted to crosscountry ore hauling between the iron range, two harbors and duluthproctor. Its functional, but pretty battered now and id wanted to make a proper one ever since i saw a very short set of instructions in an o. Semiarticulated locomotives with two engines and two sets. This collection includes specifications, engineering drawings, advertising and corporate publications, ledgers, and manuscripts.
If you are going to work with original drawings and reduce them to scale, then you will be faced with the same problem, and should be taken into. They are the heaviest and most powerful engines we have, and are frequently referred to as the workhorses. In order to develop high tractive effort, great adhesion weight, a. The reference text on which this subcourse is based is a broad presentation of locomotive structure and a basic outline of maintenance. By world war i, mallet 2882s were in use across the united states, particularly on mountain routes where they replaced two or three smaller engines. Wires run from the front of the tender to the rear of the cab. In many cases, especially early on, it also followed its inventors idea of compound expansion, by which the steam from the. A compound locomotive is a steam locomotive which is powered by a compound engine, a type of steam engine where steam is expanded in two or more stages. The compound steam system fed steam at boiler pressure to highpressure cylinders driving the main set of wheels. Jan 11, 20 locomotive design posted by mdw on friday, january 11, 20 7. Mav 401 hu was an 1bb locomotive in service between 19051969 and mav 651 hu cc until 1962. The strongest malletlocomotive of europe was the mav 601 which was built for the hungarian state railways, it as a 1cc type steam locomotive. They are compound mallet locomotives with a 2882 wheel arrangement. These mallet locomotives bb n4vt proved to be very suitable for the slopes and arches.
The model has a 9 minimum radius but looks better on a 15 or greater radius curves. The mason bogie is a type of articulated steam locomotive suited for sharp curves and uneven track, once commonly used on narrow gauge lines in the united states. Locomotive design posted by mdw on friday, january 11, 20 7. These patents were developed by samuel vauclain, later president of the baldwin locomotive works. Union pacific railroad big boy steam locomotive film 71522 duration. Austin included ten driving wheels, laid out on a 2100 plan. Improving on the design of anatole mallet of france, the baldwin locomotive works had improved steam generation and distribution in articulated compound locomotives. When the usra took over the railroads during the war, it used the norfolk and western class y2 2882 as the starting point for the largest of its 12 standardized steam locomotive designs. From its handapplied scale details to the advanced technology found inside, your locomotive is.
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