rotary engine

The Gnome rotary engine was first used with success at this meeting.

The first steam engine invented by Hero was a rotary engine, but it was of course, most uneconomical of steam.

In the Gnome rotary engine the lightness is entirely due to the initial design and to the materials employed in manufacture.

It has recently become common to construct the steam fire-engine with rotary engine and pump (Fig. 122).

These advantages adapt the rotary engine, in an especial manner, to the driving of a locomotive or steam fire-engine.