[569]. Vertical triple compound engine, single acting cylinders. The high pressure steam acts first on the under side of the small piston, is then expanded into the annular under side of large piston, and finally expanded into the upper side of large piston.
[570]. Vertical compound engine, with annular cylinder. The central cylinder is the high pressure, and the annular cylinder the low pressure.
[571]. Vertical annular cylinder engine, with crank below.
[572]. Vertical slotted crosshead engine.
[573]. Standard vertical engine; a type largely used and possessing many good points.
[574]. Double cylinder engine, with T connecting rod. (Bernay’s patent.)
HORIZONTAL ENGINES.
| [575].Box bed engine, high pressure. | - | These can, of course, be duplicated side by side. | |
| [576]. Double box bed engine,coupled end to end. | |||
| [577]. Oscillating cylinderengine, with crosshead guides. | |||
| [578]. Trunk engine. | |||
| [579]. Return crank engine. | |||
[580]. Diagonal engine. See also [No. 564].
