US1166577A - Gas-engine. - Google Patents

Description

J. F. BUTLER & H. F. McCHAY.

GAS, ENGINE.

APPLICATION HLED FEB-,16 1914.

1 16 571 Patented Jan. 4, 1916.

2 SHEETS-SHEET I.

I. F. BUTLER & H. F. McCRAY.

GAS ENGINE.v

APPLICATION FILED FEB. 1.6, 1914.

1,166,577, v Patented Jan. 4, 1916.

2 SHEETS-SHEET 2.

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COLUMBIA PLANDURAPH 30-, WASHINGTON, D. C.

. To all whom it may concern .HARRY F. MCCRAY, citizens States, residing at Reno,

501m 1*. BUTLER AND HARRY F. meonAYQor'mnvo', NEVADA, assisnons or oun- THIRD TO WILLIAM A. MASSEY, on mac, NEVADA. l

' GAS-ENGINE.

F. BUTLER and of the United county of Vashoe, State of Nevada, have invented certain new and useful Improvements in Gas-Engines, of which the following is a full, clear, and exact specification. 7

Our invention relates to explosion or internal combustion engines of the two-cycle type in which an explosion occurs every time the piston starts upon its forward stroke Be it known that we, J OI-IN as distinguished, for instance, from engines gases and of a new charge require explosions of lesser of the four-cycle variety where the arrangements for the scavenging of the exhaust the introductlon and compression frequency. 7 One object of our present invention s to simplify the mechanism for supplying the charges to a two-cylinder engine by the use 7 of a storage tank for the mixed gases, and a common slide valve for placing the pumping section'of one of the cylinders in com-- munication with the carbureter while the pumping section of the other cylinder is in communication with said storage tank, the

- latter being in direct communication; with the interiors of the combustion section of specification,

both cylinders when the'pistons open their respective ports.

Further ob ects will become apparent as U the description proceeds.

v The invention will scribed in connection'with the accompanying drawings, which constitute a partof this and then more specifically pointed out description.

In the accompanying the same reference characters are used to indicate corresponding parts throughout the several views: Figure 1 tional View of atwo-cylinder engine icon structed in accordance with our invention,

one of the pistons being illustrated'as at the end of its forward or. down stroke, and the other piston as atthe endof its return-or up stroke, and the slotted seat" for the single or common valve being indicated'in broken lines in the position it would occupy in a front elevation; Fig. 2 is a vertical section the storage'tank, the valve, the

pipe leading from. the carbureter, and the Specification of Letters Patent.

be first hereinafter de' in the claimatthe end of the drawings, wherein is a vertical sec-..

each, as

' one column and through one of the ports leading from the valve to the pumping section of thecylinder and the storage tank and from'the storage tank to the combustion section of the cylinder; Fig. 3 is a broken sectional view of the upper part of one cylinder similar to that shown in Fig.2 except that itis provided with a water cooled jacket instead of an air cooled jacket as illustrated in Figs. 1 andQ, Fig. 4 isa diagrammatic view of the valve seat; Fig. 5 is an inner face view of the valve drawn to the and Figs. 6 and 7 are sections of drical portions 0 andd fitted to slide in the combustion sections a and b of the cylinders,

and said pistons also have enlarged heads 0 and d fitted to slide in the pumpingsections a and Z) of the cylinders. The pistons are actuated by pitmen E and F connected to oppositely extending cranks of the driving is at the end of its upwardstroke when the other ,one is at; the end of its downward stroke, and the force of the eXplosion whi-ch drives the first piston downward will carry the second piston upward. H I v The lower or pumping sections of both cylinders'have ports 1 and 2 in the valve seat H. which alsohas four-other ports or slots, two of them, 3 and 4,.leading to the carbureter(not shown), and the other two, 5 and 6, leading-to 2. Said tank communicates with the combustion sections of thecylinders by passages L in which screens or grids of mesh material -.are placed to divide the gas into small particles as it enters insure apropermixture vandignition. The

the cylinders in order to ports or slots in the valve seat H. are arranged in two' vertical ,columns of three each, v and three horizontal rows of three illustrated in' Figs. 1 and 4:. The

two middle, slots lead to the pumping sections of the cylinders. The upperlslot, of the'lower;slot of the other column lead to the storage tank, f while the remaining two ports lead to the ca'rbureter. The valve N is adapted to be reciprocated by means. of a cam rod, 0, and is designed,

Patented Jan. 4,1916. Application filed February 16, 1914. Serial no. 818,948,

shaft Gr. Consequently one ofthe pistons the storage tank K, Fig.

to close either the two upper or the two lower ports in the valve seat while placing the two lower or upper ports in each column in communication with each other. In other words, when the valve is in its lowered position, as indicated by the dotted lines in Fig. 2, the port 1, Figs. 1 and a, leading to the pumping section of one cylinder, is in communication with port 3, leading to the carburetor, while port 2 leading to the pumping section of the other cylinder, is in communication with port 6 leading to the storage tank, and the ports 5 and 4 are closed. On the other hand when the valve is in its raised position, as illustrated in solid lines in Fig. 2, ports 3 and 6, Figs. 1 and 4, are closed, while port 1 which leads to the pumping section of the first cylinder, is in communication with port 5 leading to the storage tank, and port 2 which leads .to the pumping section of the second cylinder, is in communication with port 1- leading to the carbureter. The valve is formed with a central. vertical partition 71, and upper and lower flanges a, as clearly shown in Figs. 5, 6 and 7, in order to accomplish these results, as will be readily understood, the length of the grooves n in the valve being just sufficient to cover or include two of the three ports in each column at the same time. The result of the construction just described is that in the raised position of the valve, the upward movement of the enlarged head of one of the pistons in the pumping section of itscylinder will force the gas from said pumping section into the storage tank via the port 1, one of the grooves n and port 5, while the simultaneous downward movement of the enlarged head of the other piston in the pumping section of its cylinder will draw gas into said pumping section from the carburetor via port 4, the other groove 01, of the valve, and port 2, the ports 3 and 6 being closed by the lower fiange n of the valve. In the lowered position of the valve, its upper flange n closes the ports 5 and 4, and the upper movement of the enlarged head of the second piston in the pumping section of its cylinder will force the gas from said pumping section into the storage tank via the port 2, second groove n in the valve, and port 6, while the simultaneous downward movement of the enlarged head of the first piston in the pumping section of its cylinder will draw in another supply of gas from the carbureter into said pumping section via the port 3, first groove n in the valve, and port 1. Thus gas or fuel is always being drawn into the pumping section of one cylinder while the gas previously drawn into the pumping section of the other cylinder is being forced into the storage tank.

"The combustion section of each cylinder end of its working is provided with an exhaust port P on a level with the top of the piston when the latter is in its lowest position. The supply port or passage L in each cylinder is arranged on a lower level than these exhaust ports. The main piston head in each cylinder is formed with a delivery passage R opening in the top thereof and also in the side adjacent the supply port L. This side opening of the passage R is adapted to regster with said supply port L when the piston is in its lowest position, that is, at the stroke, as shown in Fig. The top opening of the passage R is arranged near the point on the wall of the cylinder which is diametrically opposite the exhaust port P, and said opening is shielded behind an upward projection or lug S on the top of the piston. The side of the lug adjacent the opening of the passage R is inclined upwardly and away from the exhaust port, whereas the side of said lug facing the exhaust port is inclined downwardly and toward the same. By reason of this peculiar formation of the top of the piston and arrangement of the delivery passage therein, the charge on entering the cylinder is prevented from mixing with the exhaust gases which are guided to their exit by the sloping or inclined side of the lug 3 facing it. Moreover, the nozzle shape of the deliverv passage R forms a pocket or cup which holds the rich mixture and carries it directly to the top of the cylinder which is provided with a peaked projection a shaped to correspond to the formation of the top of the piston and has the spark plug T fitted in the uppermost portion or peak directly over the lug S. Hence the richest part of the combustible mixture is carried right into proximity to the spark plug where upon ignition it will develop the most power.

The combustion section of each cylinder is inclosed by a removable hood or jacketwhich may be air cooled or water cooled as preferred. As illustrated in Figs. 1 and 2, the hood U is adapted to be air cooled and is provided with volutes or fins V around its sides only. This hood is made of aluminum or other metal suitable for radiating the heat. This hood is open at the top and slides over the cast iron cylinder which is tapered from bottom to top, thus insuring a perfect joint and also allowing the hood to be easily removed. The volutes V on the top of the cast iron cylinder are integral thereof, and are therefore not removable. This hood is bolted to the top cylinder by bolts W, which may be readily removed for taking oif the hood when occasion arises or when the water hood is to be substituted.

In Fig. 3 we have illustrated a form of water cooled hood or jacket U, made of similar material as hood U in Figs. 1 and 2,

of water.

v the single and removablv secured in place by bolts W. This hood is also retained by the threaded bushing 22 in which the spark plug T is fitted. The walls of this hood are vertical and spaced a suitable distance from the cast iron cylinder, allowing for a free circulation The water also circulates around the volutes or fins on top of the cylinder.

It will be observed that the hoods, either for air or water cooling purposes are interchangeable moments by simply loosening their securing means, and that these hoods are made of aluminum or other metal that radiates heat to advantage. Furthermore, it will be noted that the upper or working pistons travel their entire length in the top sections of the cylinders while'the lower or pumping pistons travel their entire length in thelowel', sections of the cylinders, and that there are no joints in either sections where leaks can occur. I

The engine may be operated with any description of gas which may be formed in an auxiliary attachment. Inasmuch as there are no puppet valves,

slide valve being operated by an eccentric from thecrank shaft. Moreover, as the engine does not compress in the crank case, overheating and leakage are avoided.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent of the United States is:

In an internal combustion engine, the combination with two cylinders, each having a pumping section and a combustion and can be transferred in a few v the engine is noiseless,

ports arranged in parallel rows and colleading to the umns, the two middle ports two of pumping sections of the cylinders,

' the other ports-leading to the storage'tank,

and the remainingtwo ports leadlng to a source of fuelsupply, one of the ports leading to the fuel supply and one of theports leading to the storage tank being arranged at either side of the middle row of ports leading to the pumping sections of the cylinders, and one of the ports leading to the storage tank beingarranged in each column, a valve having two grooves each adapted to cover two of the three ports in each column, said valve also having flanges for closing the end ports in each column when the other ports in the valve seat are covered by the grooves, and means for sliding said valve on the seat wherebythe-source of fuel supply may be placed in communication with the pumping section of one cylinder while.

the pumping section of the other cylinder is placed in communication with the storage tank. v

In testimony whereof we have signed our names to this specification in the presence of two attesting witnesses:

JOHN F. BUTLER.

HARRY F. MoORAY.

Witnesses:

GEORGE SPRINGMEYER, E. I. PARKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. G.

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