US532314A - Gas-engine - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

J.A.GHARTVER. GAS ENGINE.

No. 532,314. Patented Jan. 8, 1895.

'mz "cams PETERS co., Pnoruumu, wxsmue'ron. D. c.

2 Sheets-Shea 2. J. A. CHARTER.

(No Model.)

GAS ENGINE.

Patented Jan. 8, 1895 viz/11111211111 I0 J I V NITED STATES PATENT OFFICE.

JAMES A. CHARTER, OF CHICAGO, ILLINOIS.

GAS-ENGINE.

' SPECIFICATION forming part of Letters Patent No. 532,314, dated January'S, 1895.

Application filed March 10, 1892. Serial No. 424.429. (No model.)

To aZZ whom it may concern.-

Be it known that I, JAMES A. CHARTER, a citizen of the United States, residing at Chi-- cago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Gas-Engines, of which the following is a specification.

My invention relates to certain improvements in gas engines fully set forth hereinafter and illustrated in the accompanying drawings, in which- Figure 1 is a sectional elevation of an engine having myimprovements. Fig. 2 is a sectional plan. Fig. 3 is an elevation of the governing device Fig. dis an enlarged section of the nozzle; and Figs. 5, 6 and 7 are sectional views illustrating additional features that maybe employed.

The cylinder A, the piston B, the exhaust device and its valve and the inlet port 3 for the mixed gases together with the base and the connections between the piston and the driving shaft and any governing devices and operating devices for moving the pump plunger may be of any of the usual constructions apd I have illustrated those which are of a character heretofore used and which will be thoroughly understood without any further description. The igniter may be in the form of an electrical igniter, an ordinary flame igniter or as shown there may be an igniting tube 5. Air is drawn into the cylinder through a pipe 0, communicating with an enlargement or casing K containing a mixing chamber X, and above the latter is a casing T, from which the mixing chamber is separated by a valve 4, which is lifted by the exhausting action of the piston. Into the mixing chamber or into the pipe 0, below the mixing chamber extends a pipe 6, which is bent upward so as to form a nozzleC. This nozzle may be open at its inner upward end, as shown in Figs. 1 and 4:, or it may have a ball valve 7, as shown at Fig. 5, in which case a guard strip or wire 8, extends over the valve so as to prevent it from dropping from the end of the nozzle. In connection with these parts I employ a pump D, which may be of any suitable construction, but as shown, the pump has a cylinder 9, and a plunger E which moves back and forth in the cylinder, the latter communicating with the pipe 6, at

the side and alsocommunicating at the end with a valve casing 10, in which there are two valves 1, 2, the valve 1, lifting upwardly and controlling a port that is in connection with a pipea, leading to a reservoir Q, of any suitable volatile hydro-carbon. The valve 2, opens downward into a pipe b, that also extends to the reservoir Q. The passage 12, in the pipe 6, is controlled by a regulating valve L, which may be so set as to contract or enlarge the flow through said passage.

The plunger E, is connected by a link M,

with a lever N, turning upon a pivot supported by a bracket and a connecting rod is connected with the lever N, and also is operated by any of the before mentioned connections or devices for imparting a reciprocating motion to the rod and for throwing it out of operation. These parts are so arranged and timed that the oil pump plunger E, remains in the position shown in Fig. 2, during the outstroke or suction stroke of the engine piston, in which position of the plunger E, the space between {theplunger and the valves 1, 2, is filled with 'oil as is also the channel 12, and the nozzle 0. During the outstroke of the piston B, the said piston sucks in a current of air through the pipe 0, and chamber X, lifting the valve 4,

and this current of air draws with'it the oil from the nozzle and from the chamber or space between the plunger E and valves 1, 2, in determinate quantity or at a regulated speed depending upon the extent to which the valve L, throttles the passage 12. Immediatelyafter the air and gas suction stroke of piston B, is .completed the instroke of the oil plunger E,

takes places closing the passage 12, sothat the surplus oil in the space between theplunger and the valve is forced out from the said space and through the opening closed by the downwardly opening valve 2, back into the reservoir Q. At the next forward movement of the plunger IE, it draws in the oil through the port closed by the valve 1, until the said plunger passes the channel 12, when as the plunger ceases to move the oil will flow into the said channel and upward to the nozzle in position to be readily lifted by the next upwardly flowing current of air.

In the construction shown in Figs. 5 and 6, the ball valve 8, serves to close the nozzle 6, upon every outstroke of the plunger E, but

the parts are proportioned to secure a larger stroke of the plunger, and the valve will lift readily when there is an upfiowing current of air so as to deliver to said current the oil that maybe in the nozzle and communicating channel. In this construction the cam s, is inclined or sloping to permit the plunger to move inward gradually during the suction stroke of the piston to force oil into the channel 12, and nozzle 0, as the air flows upward. When the main piston has completed its suction stroke the plunger IE, will have moved outward under the action of the spring R, and have closed the channel 12 and the surplus oil will then be driven back. To insure the flow of the oil to the passage 12, the passage 13, is restricted so that until the passage 12, is closed the flow will be partly through such passage 12. In either case the upward current of air can very readily aid to draw from the nozzle the oil that may be in the same; while in the construction of Figs. 5 and 6, the act of the plunger aids the flow. With the valve 8, if there should be any back pressure resulting from premature explosion or otherwise, there can be no passage of flame back to the interior of the pump D.

The principal advantage of each of the arrangements described is that the pump draws in at each stroke a superfluous amount of material so as to supply just what may be required to the nozzle 0, and any over-plusis forced back upon the back movement of the T plunger into the reservoir Q. Further, by the means of the valve L, the passage 12, can be! throttled to any desired extent to regulate theit delivery to the nozzle. 5

As only a portion of the oil pumped at each stroke is used it is possible to pump a much larger quantity of oil at each stroke'than is possible in that class of devices where at each stroke only the exact quantity of oil required is moved by the pump. As a consequence it is not necessary to employ delicately constructed valves or devices and make such nice adjustments of the pump, and slight inaccuracies in the movement of the parts will not affect the quantity of oil which is actually supplied at each suction movement of the piston. Thus, by this means I am enabled to secure an accurate delivery of oil to the air current without having an extremely accurate construction and operation of the pumping devices.

It will be seen that in the improved arrangement illustrated and described the oil reservoir is below where the oil is taken into the pump and into the air passage. This has quite a number of advantages. Thus in case of any leakage the oil will not leak down from the reservoir into the air passage, while in the operation of the engine it is not possible for the oil to flow automatically at a greater speed than would be secured by the operation of the pump so that there cannot be any excessive supply of oil nor any excessive action of the engine.

It will of course be evident that the character of the pumping devices and the arrange ment of the parts may be varied according to the character of the engine as for instance whether it is a horizontal engine, a double actting engine, a vertical engine, &c.

It will be understood that I prefer to actuate the plunger E, by devices controlled bya cam s, and shifted by a governor in any suitable manner as for instance as shown in John Oharters Patent No. 455,388, so that the plunger is moved to the position shown in Fig. 2, during the exhaust stroke of the main piston, but if the engine is moving too fast the plunger will be put out of operation.

WVithout limiting myself to the precise construction and arrangement of parts shown and described, I claim as my invention- 1. In a gas engine, the combination with the cylinder and piston, and with the mixing chamber, of anozzle extending into a passage communicating with the mixing chamber, a pump communicating with said nozzle and an oil reservoir communicating with the pump, through two passages controlled b waives seated to lift in different directions to permit coming from the reservoir, into the reservoir, substantially as described.

' 2. The combination with the nozzle G, of a pump com municating with the said nozzle and through two passages with a reservoir Q, with valves lifting in different directions in said passages, and a passage 12, between the nozzle and the pump arranged to be controlled by the plunger of the pump, substantially as set forth.

% 3. The combination with cylinder, piston, mixing chamberand the nozzle 0 and pump, of a Valve at the mouth of the .nozzle,sub-

t In testimony whereof I have signed my name to this specification in the presence of two subscribingwitnesses.

JAMES A. CHARTER.

Witnesses:

JOHN CHARTER,

J AMES HENRY.

the pump to force back any surplus material j \stantially as and for the purpose described.

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