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Title: |
1894 Article-Electric Manufacturing & Gas Engine Co., "Rollason" Gas Engine |
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Source: |
Proceedings of the American Gas Institute, V 10 #2, Apr 1894, Appendix pgs. 62-63 |
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Insert Date: |
3/4/2014 10:10:08 PM |
Prominent in what may be called the higher grade class of gas engines is the English engine, made at Greenbush, N. Y., and handled by the Electric Mfg. & Gas Engine Co., of 622 Havemeyer Building, New York, styled the Rollason. Designed and patented by H. Hamilton and Arthur Rollason, from '88 to '93, it was put upon the American market in '89 and ’90, in sizes from 1 to I6 H.P., although in England it is made up to 180 H. P. The smaller sizes are made on the Otto cycle. (?) The larger horizontal forms at first used the 3 cycle with scavengering charge, described under the Griffin heading herewith. This gave an impulse every third revolution. While this scavengering charge is felt by the makers to be desirable, yet having to lose on its account a full revolution before a fresh impulse, was distinctly undesirable and the later forms have been so designed that by the use of an auxiliary piston ahead of the main working piston, and working in a tubular guide a pump is constituted that compresses air sufficiently for and that acts as a scavenger charge.
This is led into the cylinder proper by suitable channels at the proper time to drive out the products of combustion, through the usual exhaust. Governing is effected by varying the strength of the gas mixture. Both flame and slide valve and tube ignition and poppet valve forms have been built, the latter now having the preference. The cut gives a very fair idea of the engine’s appearance and further description may be found in Progressive Age for September 1st, I891, and the American Gas Light Journal for September 14th, 1891.
Some 200 or more have been placed in the Eastern market and the engine is being actively pushed for all the usual purposes requiring small powers. I have not yet seen figures of efficiency. Cassier’s Magazine for June, '93, describes the engine’s working in detail. |
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1894 Electric Manufacturing & Gas Engine Co., "Rollason" Gas Engine
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