. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. at the end. The cylinder is divided into two compartments, each of which contains one of thesecases and pistons, the two pistons being set at right angles to each other. Steam is admittedthrough a valve and ports, F and G. The Gallahue engine, Fig. 1208, consists of a casting A, which includes the main cylinder, inwhich works the piston D, firmly attached to the inner revolving cylinder B, and there are twosliding abutments E and F, actuated by cams. Steam enters and is exhausted at the ends by steamports
. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. at the end. The cylinder is divided into two compartments, each of which contains one of thesecases and pistons, the two pistons being set at right angles to each other. Steam is admittedthrough a valve and ports, F and G. The Gallahue engine, Fig. 1208, consists of a casting A, which includes the main cylinder, inwhich works the piston D, firmly attached to the inner revolving cylinder B, and there are twosliding abutments E and F, actuated by cams. Steam enters and is exhausted at the ends by steamports a b and exhaust ports c d. In the Massey engine. Fig. 1209, the outer case E is oval, and the inner cylinder G is secured tothe shaft F. The pistons H H are moved in and out by the action of fixed cams I. L is theabutment. At D is a valve, controlled by the lever C, which admits steam through the passage A ;the exhaust is arranged on the opposite side at B. The Lidgerwood engine consists of an outer cylinder, oval-shaped, and an inner cylinder orcase, circular in section, secured to the shaft, and forming two abutments at its points of contact oneach side with the outer cylinder. Six pistons are arranged in the inner case, actuated by fixed ENGINES. 593 cams, the form of the outer cylinder being such that the pistons do not slide when they are underpressure. Tlie rotary steam engines above described, were carefully tested in 1874 at New York byJ. T. Hawkins, and the results of these tests are recorded in Tables I. and II.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
