Corliss Engine

Embodying in its valve gear the special features first applied by Geo. H. Corli of Providence, R. I. These are: first, to secure an automatic adjustment of the point of cut-off as the speed varies with the load; second, to do this and secure constant compre ion and a fixed point of release at all points of cut-off; third, to secure a sharp cut-off with the least lo of pre ure from the boiler. The cylinder has four valves, one for admitting and one for exhausting steam at each end. These are driven from four points on a vibrating wrist-plate operated from an eccentric by a rod. The two exhaust valves are driven from points which secure a prolonged opening; the steam valves are driven from points which have a rapid motion at the start, so as to admit abundance of steam. The valves are rotated around their axes to IMG:content-0980.jpg:[graphic] IMG:content-0981.jpg:[graphic] IMG:content-0982.jpg:[ocr errors] Corinth. of the proconsul of Achaia: ravaged by Goths ab. 290, by Alaric 396, and by Slavs in 8th century; taken by Franks 1205, and by Turks 1459; held by Venetians 1699–1715, and again by the Turks till 1822; destroyed by an earthquake 1858. Pop. ab. 4,000.