Pistol boiler

A pistol boiler is a design of steam boiler used in and overtype steam wagons. It is noted for the unusual shape of the firebox, a circular design intended to be self-supporting without the use of firebox stays. The name "pistol boiler" derives from the smooth curve of the outer firebox flowing into the boiler barrel, and a supposed resemblance to the stock of an early 19th-century pistol.

Pistol boiler

A pistol boiler is a design of steam boiler used in and overtype steam wagons. It is noted for the unusual shape of the firebox, a circular design intended to be self-supporting without the use of firebox stays. The name "pistol boiler" derives from the smooth curve of the outer firebox flowing into the boiler barrel, and a supposed resemblance to the stock of an early 19th-century pistol.