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The Union Pacific Big Boy is a type of simple articulated 4-8-8-4 steam locomotive manufactured by the American Locomotive Company (ALCO) between 1941 and 1944 and operated by the Union Pacific Railroad in revenue service until 1962. The 25 Big Boy locomotives were built to haul freight over the Wasatch Range between Ogden, Utah, and Green ...
Union Pacific 4014 is a preserved 4884-1 class 4-8-8-4 "Big Boy" type steam locomotive owned and operated by the Union Pacific (UP) as part of its heritage fleet.Built in November 1941 by American Locomotive Company (ALCO) in Schenectady, New York, it was assigned to haul heavy freight trains in the Wasatch mountain range.
A Big Boy locomotive.This example is Union Pacific 4014. 4-8-8-4 wheel arrangement. A 4-8-8-4 in the Whyte notation for the classification of steam locomotives by wheel arrangement, is a locomotive with a four-wheel leading truck, two sets of eight driving wheels, and a four-wheel trailing truck.
Union Pacific 4023 is a 4000 class 4-8-8-4 "Big Boy" type steam locomotive, preserved at Kenefick Park in South Omaha, Nebraska.Built in November 1944 by the American Locomotive Company's Schenectady Works, No. 4023 is one of eight surviving Big Boys and the only one that is part of the class' second group built in 1944, as all seven of the other survivors were part of the first group built in ...
The A. C. Gilbert Company was an American toy company, once one of the largest in the world. Gilbert originated the Erector Set, which is a construction toy similar to Meccano in the rest of the world, and made chemistry sets, microscope kits, and a line of inexpensive reflector telescopes.
It sported an outside diameter of 109 in (2.8 m), 2 in (51 mm) wider than the Union Pacific Big Boy, carried 23 ft (7.0 m) tubes and flues, one foot longer than Big Boy, and was designed with a maximum operating pressure of 265 psi (1.83 MPa) in mind. In practice, the first safety valve was set at 260 psi (1.8 MPa).
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