| LEGEND TO THE ILLUSTRATIONS, SEE BELOW Print Specifics:
Notes:
Legend to the illustrations: As just stated, the steam-engine is the moving power in steamships, sails being only occasionally used as an additional force, in order to save fuel. In steamships the engine is arranged either to drive paddle wheels or an Archimedean screw, the vessel being propelled by each of these moving powers. The engine generally differs little from those in common use, except that, on account of the limited space, the working-beam is either omitted or placed in a low part of the engine. Figs (on this engraving) 1 to 9, represent a steam-engine of 160 horse-power, consisting of two connected engines working on a common crank-axle, the ends of which carry two paddle-wheels, the axle passing through the whole breadth of the ship. Fig. 1 represents the two engines, the larboard engine in a front view, and the starboard one in a section through the regulating cylinder; the air-pump, the condenser, and its pipes are left out for the sake of greater clearness; fig. 2 is a horizontal section of the regulating cylinder, and fig. 3. 3 a vertical section of the same; figs. 4, 5, and 6, are the details of a cylindrical sliding-valve; fig. 7 is a side view of the larboard engine, with a vertical section of a part of the deck ; fig. 7a, and fig. 7b are details of the regulation for the injection of steam ; fig. 8 is a half horizontal section of the larboard engine, in the direction of the line 1, 2, in fig. 7 ; fig. 9 is a half view from above of the same engine; A is the steam cylinder, in the chamber of which, A', the air-tight and steam-tight piston-rod moves up and down, being secured in a perpendicular direction at the top by the plate, J, which rests on the supports, J'. Martin2001 Satisfaction Guaranteed Policy!
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