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Title: |
1898 Article-J. I. Case & Co., Raymond Duplex Gas Engine |
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Source: |
Gas, Gasoline and Oil Vapor Engines, 1898 pgs 147-148 |
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Insert Date: |
10/22/2012 11:04:42 AM |
The Raymond Duplex Gas Engine
The duplex (Fig. 81) with a section view (Fig. 82), in which one impulse is made for each revolution, are made in ten sizes, from 4 to 50 H. P. (actual).
The details of construction are similar in all the styles and sizes. They are entirely enclosed in a base with a vent pipe at the back to prevent cushioning by the pistons, and, with the large flange on the front of the base, are removable for easy feed-oil access to the moving parts within.
The valves are of the rotating- type and are operated directly from the crank shaft by a set of bevel and spur gear; they are held to their seats by spiral spring's and are supplied with steel ball bearings. The valves are lubricated from sight feed oil-cups.
Fig. 82 shows a section of one of the cylinders of a duplex with the bevel gear, secondary shaft, and spur wheels of the valve gear.
The governor is placed on the fly-wheels, and is of the centrifugal type, and regulates through piston valves the exact amount of gas or gasoline mixture required for each impulse to maintain a perfectly steady speed of engine under all conditions and variations of load.
For the use of gasoline, naphtha, or light petroleum oil, a glass reservoir is placed on top of the vaporizer of the capacity of a half-pint, which is connected to a small pump, which in turn is connected to a gasoline tank.
A return pipe connects the reservoir with the tank for return of the surplus gasoline. The adjustable needle valve, which governs the supply of gasoline necessary to give the engine its required power and steady motion, is in direct connection with the shaft governor and works automatically.
The hot and cold air valve, or air mixer, connects the vaporizer with a jacket around the exhaust pipe, in which the air is heated to more effectually vaporize the gasoline. An explosive starter is provided for the large engines. |
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1898 J. I. Case & Co., Raymond Duplex Gas Engine
1898 J. I. Case & Co., Raymond Duplex Gas Engine View (Sectional View)
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