Bissel truck
(重定向自Bissell truck)
![Drawing from Patent US62727[1]](/uploads/202412/24/US62727-04839.png)


A Bissel truck (also: Bissell truck or Bissel bogie) is a single-axled bogie which pivots towards the centre of a steam locomotive to enable it to negotiate curves more easily. Invented in 1857 by Levi Bissell and usually known as a pony truck, it is a very simple and common means of designing a carrying axle.