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Title: |
1895 Article-Armington & Sims Co., Steam Engines |
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Source: |
Modern Mechanism 1895 pg 310-311 |
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Insert Date: |
6/10/2011 9:27:17 PM |
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The Armington & Sims Engine—Two recent styles of Armington & Sims engines are shown in Fig. 38 & 39. The first is a double compound engine with cranks at 180°, and the second is known as a special double engine, especially designed for electric-lighting on board of steamships, where saving of space is a prime requirement. Numerous other forms of engine are built by the Armington & Sims Co., of Providence. R. I., such as vertical double acting compound engines, etc., all of which are developments from the original engine built by this company with a single cylinder. A section of the cylinder and valve of the Armington & Sims engine is shown in Fig. 40. The steam-chest, with valve-seat, is in one casting with the cylinder; the valve-chest is enclosed by a cover in the usual manner. It will be seen that the steam-chest is filled with live steam, which surrounds the valve, and that by taking steam in the center of the valve and exhausting at each end, the steam-ports from the cylinder can be very direct, and the waste-room kept small. In the engraving the valve is shown as just taking steam into the cylinder-port at the piston-end; the port in the valve at the other end is also just taking steam from the steam-chest into a port which passes through the valve into the same cylinder-port: this enables steam to be taken very quickly at the commencement of the stroke. The steam is exhausted at each end of the valve by direct passages which quickly free the cylinder. The piston is hollow, fastened by a taper fit to the rod, and furnished with two snap-rings. The valve is a hollow piston-valve, with cast iron ends, made very light, with a body of steel tubing. It is ground, and perfectly balanced. |
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1895 Armington & Sims Co., Steam Engine
1895 Armington & Sims Co., Steam Engine
1895 Armington & Sims Co., Steam Engine Valve & Cylinder
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