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Title: |
1890 Article-E. P. Allis & Co., Reynolds-Corliss Steam Engine |
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Source: |
The Steam User 1890 pg xxii |
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Insert Date: |
4/2/2011 7:17:09 PM |
The illustration on the page opposite represents a Reynolds-Corliss engine with wrought-iron frame.
The engine-frame is formed by two heavy wrought-iron guide-bars. One end of each of these bars is secured to lugs cast on the side of the cylinder; the other end is keyed to the heavy pillow-block casting. To give additional rigidity, there is a heavy and strong support placed midway between the cylinder and main bearing, which is secured to the foundation by anchor-bolts. This type of frame is preferred for engines having cylinders over 34" diameter, and where it is found desirable to change the length of stroke of any regular size.
The guide-bars are located in line with the centre of the cylinder and crank-shaft. This brings all strains central and in a straight line, and prevents a tendency to twist or turn the cylinder or main bearing from the foundation.
Principal features of these engines, which are practically the same as those of cast-iron frames such as is illustrated on the next page, are the peculiar liberating devices of the valve gear, and the arrangement of the regulating mechanism. The general appearance of the engine is well illustrated by the engraving showing the back view. The cylinder, which is firmly bolted to the frame, is cast of hard, close iron, carefully selected and remelted, so us to insure a thorough mixture and perfect casting. The exhaust chamber is located on the under side, and is completely separated from the cylinder walls to lessen the loss from condensation. |
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1890 E. P. Allis & Co., Reynolds-Corliss Steam Engine
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