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A Bissell or Bissel truck (also Bissel bogie or pony truck) is a single-axle bogie which pivots towards the centre of a steam locomotive to enable it to negotiate curves more easily. Invented in 1857 by Levi Bissell [ de ] [ 1 ] and usually then known as a pony truck , it is a very simple and common means of designing a carrying wheel .
The rear axle was an inside-framed Bissel truck, pivoted ahead of the leading axle. 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.
The LNWR 317 class, (also known as Saddle Tank Shunter, Dock Tank or Bissel Tank) consisted of a class of 20 square saddle-tanked steam locomotives built by the London and North Western Railway at their Crewe Works between 1896 and 1901. They had a very short coupled wheelbase, with a trailing Bissel truck to carry weight.
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The bogie is a type of pony truck and was named after the locomotive firm of Krauss and the engineer, Richard von Helmholtz. By contrast a Bissel bogie is independently installed in the frame, and sideways guidance of the locomotive is achieved by elastic forces. The distribution of these forces is not tightly defined and, in addition, they are ...
Pilot truck, Pony truck (US+) Leading bogie / Lead truck / Bissel truck (UK+) Wheels at the front of the locomotive [3]: 62 to guide the front driving wheels around curves, and minimise yawing at higher speeds with the attendant risk of derailment. The truck has some side motion and is equalised to the driving wheels (41).
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In 1865 the Society of Engineers, London, made direct comparison between the radial axle, invented by William Bridges Adams, and a bogie design with an india-rubber central bearing invented by William Adams: during trials on the North London Railway the laterally sprung bogie was thought superior to the radial axle, [2] but when William Adams moved from the NLR to the London and South Western ...