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Title: |
1904 Article-Robertson Manufacturing Co., Vertical Gas Engine |
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Source: |
American Blacksmith, V3, Sep 1904, pg. XVI |
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Insert Date: |
7/2/2013 12:12:29 PM |
The accompanying illustration shows a new style of gas engine, which has just been perfected, and which embodies some features of radical departure from other types of engines.
One of the distinctive features of the engine is its oscillating cylinder, the charge being introduced through one of the trunnions. The engine is constructed on the four-cycle type, drawing in the charge on one downward stroke of the piston, compressing it on the return, firing it at the beginning of the next downward stroke and exhausting the burnt gases upon the following upward stroke. As in other four-cycle engines there is one impulse every other revolution. The hit and miss governing principle is applied to the engine by a mechanism of extreme simplicity, and fuel supply is so governed that no charge is taken in except when the load demands it. The fuel mixture of gas and air, as mentioned, is taken through a chamber in the trunnion, which is kept at a fairly high temperature by the heat of the exhaust, thus promoting the efficient use of fuel. A claim is made for maximum economy in the use of fuel,
The engine is so constructed that it may be changed to run either on gas or gasoline, as desired, in a very few minutes. An especially designed form of muffler is attached to the engine, rendering the exhaust almost noiseless, as it is claimed.
The base and supports are of one casting. The cranks are of forged open hearth steel. The piston and connecting rod are solid, thus dispensing with the usual cross-head and wrist pin V connection, and by the oscillating form of the cylinder the piston is always in a straight line with the crank. The crank-pin bearing is of hard bronze, having a threaded sleeve to receive the connecting rod, by which more or less compression can be quickly adjusted for. The cylinder is of 4-inch bore with 6-inch stroke, and is provided with a water jacket and the necessary connections. The engine occupies a floor space of 25 by 28 inches, weighs about 700 pounds, and is guaranteed to develop four horse-power. It is built by the Robertson Manufacturing Company, of Buffalo, N. Y. |
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1904 Robertson Manufacturing Co., Vertical Gas Engine
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