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Title: |
1895 Article-Sioux City Engine & Iron Works, Giddings Steam Engine |
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Source: |
Modern Mechanism 1895 pg 308-309 |
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Insert Date: |
6/10/2011 9:45:36 AM |
The Giddings Compound Automatic Engine is shown in Fig. 83. It is built by the Sioux City Engine Works, Sioux City, Iowa. The special feature of this engine is a novel device for packing the piston-rod between the two cylinders. The space between the cylinders is jacketed and provided with a means for opening, to test for leakage around the piston-rod and to adjust or renew the packing. The intermediate receiver has been discarded in these engines.
The Giddings Valve.—Fig. 34 shows the Giddings equilibrium slide-valve, used in the Giddings high-speed automatic engines. This slide-valve consists of one piece; takes steam from underneath, supplies the cylinder through double ports, giving twice the original port area, and close approximation to boiler-pressure. It is self-adjusting to wear and position, and is free to lift from its seat a sufficient amount to relieve the cylinder from water. Equilibrium is obtained by two needle ports in brass plugs in the top edge of the valve, one supplying live steam to the back of the valve to avoid lifting, another connecting with the exhaust-passage, thereby preventing accumulation of pressure, and still maintaining about 2 lbs. of surplus pressure per sq. in. on the back of the valve, which insures a positive and permanent tight joint. The connection is made by a hinge-joint, whereby the valve can be opened outward like a door, without disconnecting. |
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1895 Sioux City Engine & Iron Works, Giddings Steam Engine
1895 Sioux City Engine & Iron Works, Giddings Steam Engine Valve
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