1851 Great Exhibition: Official Catalogue: Class V.: Charles Atherton
1. ATHERTON, CHARLES, Dockyard, Devonport - Inventor.
Pair of marine steam-engines of 25-horse power, constructed with a view to apply the sway-beam principle in driving the submerged screw propeller.
Drawing, to show the mode of applying the same principle to large engines for ships of war, which require the engines to be below the water-line of the ship. The air-pump valves are adapted for being worked with great speed, and the eccentrics and slides are arranged for being easily managed so that the engines may be quickly reversed. The patent expansion gear is intended to be made one of the principal means of registering the variations of expansion during the working of the engine, in order that the indicated working power and the corresponding consumption of fuel may be duly recorded; thus applying to marine engines a system of inquiry which has been attended with great advantage in the case of mining engines.
Model of the expansion slide.