US Patent: 657,576
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| Gas Engine
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Patentee:
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| Hinsdale Smith (exact or similar names) - Springfield, Hampden County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 11, 1899 |
| Granted: |
Sep. 11, 1900 |
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Joel Havens
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Description: |
| Claim:
This invention relates to improvements in io a type of gas or explosive engine which comprises a pair of cylinders oppositely arranged but axially coincident, each having a piston operating on a common crankshaft, the outer ends of both cylinders being connected by a common comparatively large bow-shaped conduit which constitutes a continuation of the explosion-chambers of both cylinders and permits simultaneously the action of the exploded gas oppositely inwardly on both pistons. In the engine of the aforesaid type as heretofore proposed so far as known to me a common valve-chest has been provided in connection with the conduit extensions forming part of the explosion-chambers for both z5 the cylinders, in which valve-chest were provided both an inlet-valve for supplying gas into the engine for both the cylinders and an exhaust-valve, and in the operation of such engine after the gas has been entered into the valve-chest and conduit extensions leading therefrom into both cylinders and exploded therein, because the then oppositely-moving pistons, which force the dead gas outwardly from the ends of the cylinders and toward the valve-chest and to some extent through the exhaust-valve in the valve-chest, are incapable of expelling all of the dead gas, a certain proportion of the latter remains in or near the valve-chest or in each conduit at opposite sides thereof and-between such chest and the cylinders with which they are connected, and so therefore upon the admission through the same valve-chest of fresh gas to be drawn by suction created by the approaching pistons in the opposite cylinders such fresh gas encounters the residue of dead gas from the preceding explosion and necessarily becomes commingled therewith, whereby of course the efficiency of the engine is lessened. |
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