Murray and Tregurtha Boiler
|This was a launch boiler. It is 4’ tall and 2’ wide and rusted because it sat outside in a horse pasture for years. The design is an excellent natural circulation boiler. People who know say it steams very fast because of the rapid natural circulation that strips the nucleate boiling steam bubbles from the sides of the tubes. The larger diameter tubes on the sides make it almost a water wall. The boiler is designed for solid fuel firing with the combustion chamber being in the middle.|
The boiler is put together with pipe fittings and unions, thus being easily disassembled and thus being the favorite boiler for use during the Alaskan gold rush of 1898. It is the only boiler that could be hauled in on the back of a horse, or more precisely, on the backs of several horses.