made steam sufficient to work an engine of 80 horse power from the spare heat proceeding from four puddling furnaces—two furnaces to each boiler. Figure 1 is a vertical section, and figure 2 a ...

Before the steam engine can be called an economical power, our modern system of boilers must be immensely improved, or an entirely new system of applying the heat to the water must be contrived.

Standard' Sentinels were remarkably simple and robust steam waggons that featured an efficient vertical ... twin cylinder engine. To aid efficiency, exhaust steam preheated the boiler feed water ...