US391528A - hartig - Google Patents

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US391528A US391528DA US391528A US 391528 A US391528 A US 391528A US 391528D A US391528D A US 391528DA US 391528 A US391528 A US 391528A
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    • F02B75/00Other engines
    • F02B75/02Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two


(No Model.) 2 Sheets-Sheet 1.


GAS ENGINE. No. 391,528. Patented Oct. 23, 1888.



A NOR/V1576,

(No Model.) 2 Sheets-Sheet 2.



N0. 391,528. Patent-ed 001;. 28, 18881.


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SPECIFICATION forming part of Letters Patent No. 391,528, dated October 23, 1888.

Application filed November 22, 1887. Serial No. 255,864. (No model.)

To all whom it may concern:

Be it known that I, HENRY HARTIG, of the city of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Gas-Engines, of which the following is a specification.

The object of my invention is to provide a new and improved gas-engine which is simple in construction and effective in use; and the further object of my invention is to provide a new and improved igniting apparatus for the explosive mixture.

The invention consists in a gasengine having the explosion and pump cylinders in a line, a piston passing through both cylinders and the solid portion between the cylinders, a piston in each cylinder secured to the piston-rod,

valves, and igniting mechanism.

The invention also consists in the construction and combination of parts and details of the gasengine and igniting mechanism, as will be fully described and set forth hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 is a front view of my improved gas-engine, parts being shown in cross-section. Fig. 2 is a central crosssectional elevation of the same. Fig. 3 is a horizontal sectional view on the line w m, Fig. 2. Fig. 4 is a detail face view of the cam and lever for operating the igniting mechanism. Fig. 5 is a longitudinal sectional view of the igniting mechanism on an enlarged scale.

Similar letters of reference indicate corresponding parts.

The pump-eylinder A, forming the base or body of the machine, contains a pump-piston, A, secured to the lower end of the piston-rod B. On the upper end of the pump-cylinderA a casing, O, rests, in which the explosion-chamber G is formed, said explosion chamber or cylinder containing a cylindrical piston, D, of the construction usually used in gas-machines, said piston D being also secured to the pistonrod 13. In the lower part of the casing C an annular chamber, E, is formed, which is in communication with the upper part of the pump-cylinder A, and from the center of the top of said chamber a cylindrical projection, F, extends downward, through the central bore of which projection the piston rod B passes. A cylindrical valve, G, open at the top and closed at the bottom, fits snugly on said projection F, and is mounted to slide up and down on the same. A pin, G, passes through a longitudinal slot, G, of the said slide-valve G into the projection F to prevent the valve dropping too far. A series of channels, H, extend from the bottom of the explosion-chamber 0 down through the projection F and have rectangular bends at their lower ends, so that the openings of said channels will be in the sides of the projection F, on which the cylindrical valve G slides, said valve having apertures H, which can register with the lower end of said channels H. A neck, I, projects upward from the bottom of the explosion-chamber G, the bore of which neck forms a continuation of the bore of the projection F, the piston-rod also passing through the bore of said neck I. A slide-valve, I, is mounted to slide on the neck I, and is provided on its lower end with an outwardly-projecting flange, Iflwhich can close the upper ends of the channels H in the bottom of the explosion-chamber. A nut, 1 screwed on the upper end of the neck I, limits the upward movement of said valve 1.

The explosion-chamber is provided at its top with the exhaustapertures J, connecting the explosion-chamber with the annular exhaust-channel J, extending around the upper part of the explosion-chamber to J. An air or water jacket, K, is formed around the explosion-chamber within the casing G. A cross head, L, is secured to the upper end of the piston-rod B and passes through vertical slots L in the sides of the upper part of the casing 0. To the ends of the cross-head the connecting-rods M are pivotally connected, the lower ends of said connecting-rods being connected eccentrically with the disk M and the flywheel N on opposite ends of the shaft 0, which is journaled in that part of the casing 0 between the bottom of the explosionchamber and the top of the pumpcylinder.

The chamber E, formed at the top of the pump-cylinder,is provided with a lateral opening, 1?, with which the upper end of the mixing-chamber P is connected, provided at its bottom with a port, Q, closed by an upwardlyswinging valve, Q, said valve also closing the upper end of a channel, It, in a neck, It,with

which the gas-supply pipe is to be connected, the channel being provided with a cock, R to be closed when the machine is not to operate.

On the hub of the wheel M a cam, S, is formed to act on a lever, S, pivoted to the plate W on one side of the casing G, the swinging end of said lever being forked to receive the end of a lever, T, the opposite end of which is secured on a neck, U, of a conical valve, V, mounted to turn in a closely-fitting conical casing, W, the inner end of which projects into the lower part of the explosion-chamber, as shown in Fig. 4 in, dotted lines. The valve V is provided with the four longitudinal slots V, which can register with corresponding slots, W, in that part of the casing projecting from the plate W in which the casing is secured. A part, a, of the casing W projects into the explosion-chamber and is provided with slots I), which can register with longitudinal slots 0 in the inner part of the valve V. A block, d, is screwed into the innerlarger end of the conical valve V, and on the inner or front end of said valve a projection, f, is formed, having on its outer end the flange g, the diameter of which is slightly less than the internal diameter of the widest part of the conical valve, as is shown in Fig. 3. The block (1 is provided with a longitudinal bore, 6, and the projection f is provided with two smaller transverse bores, h, in communication with the bore 0. A needle-valve, m, projects into the front end of the bore 6, said needle-valve passing through the neck U of the valve, that part of the needle passing through the neck being screw-threaded, and the valve is provided at its outer end with a hand-wheel, n, or analogous device to facilitate turning it. By turning said needle-valve its pointed end is projected a greater or less distance into the bore 6 of the block (1, and thus the channels it in the projection f can be opened or closed more or less by means of said needle-valve.

The operation is as follows: Referring to Fig. 2, when the explosion takes place under he piston D, said piston isforced upward and the valve 1 is forced down on its seat, thus closing the upper ends of the channels H and preventing the products of explosion from passing down said channels. The piston A rises with the piston D and compresses the mixture of gas and air in the chamber P and the cylinder A. By the time that the bottom of the piston D has reached the apertures J of the outlet-channels J, to permit the explosion or exhaust gases to escape, the top of the piston A strikes the bottom of the cylindrical valve E, which is raised, whereby the apertures H of the same are brought into position toregister with the lower ends of the channels H, thus permitting the compressed mixture of gas and air to pass into and through the channels h to raise the cylindrical valve I and pass into the lower part of the chamber or cylinder 0. The piston D then descends and compresses said mixture of gas and air, and when the said piston has completed its downstroke the explosion takes place and the piston is thrown up again. At the same time that the piston Dis moved downward the piston A l S likewise moved downward, whereby a vacuum or partial vacuum is created in the cylinder A and chamber P, so as to cause the opening of the valve Q to let air pass into the chamber. At the same time the end of the channel It is also opened and gas is admitted into the chamber P. During the greater part of the revolution of the shaft 0 the lever T is lowered and the slots W of the casing W do not register with the slots V of the valve V. The cam S raises the lever Sa very short time before the explosion takes place, and the lever S raises the lever T, whereby the valve V is brought in such a position that the slots W and V register and the flame of the burner p ignites the gas within the valve V, the gas having passed into the valve through the bore 6. The cam S then slides from under the lever S, the spring 0- pulls said lever downward, and the valve V is turned so that the slots 0 and I) register and the slots V are closed. Theignited gas in the burner ignites the explosive mixture in the explosion chamber, the explosion takes place, and so on.

Having thus described my invention,Ielaim as new and desire to secure by Letters Patent- 1. In a gas engine, the combination of two cylinders mounted in line and separated by a solid portion provided with gas-channels establishing communication between the two cylinders, a piston-rod extending longitudinally through both cylinders, pistons mounted on the piston-rod,valves in both cylinders for closing the channels establishing communication between the two cylinders, and an igniting mechanism, substantially as shown and described.

2. In a gas-engine, the combination, with the cylinders A and G, of the downwardlyprojecting part F on the top of the pump-cylinder A, the cylindrical valve G, mounted to slide on the said part E, and having apertures that can register with the lower ends of channels H in the projection F and the bottom of the cylinder 0, the valve I on a neck, I, projecting upward from the bottom of the explosion-cylinder C, the piston-rod B, the piston D, mounted on the piston-rod B within the -cylinder 0, the piston A, mounted on the piston-rod B within the pump-cylinder A, and of the igniting mechanism, substantially as shown and described.

3. In a gas-engine, the combination, with a- IIO opening and closing said aperture more or less and extending to the outer end of the valve, substantially as shown and described.

4. In a gas-engine, the combination, with a casing a part of which projects into the explosion-chamber of the machine and part from the outside of the machine, which casing has slots in the outer and inner part, of a valve mounted to rock within said casing, and also provided with inner and outer slots adapted to register with the slots of the casing, a block secured in the inner end of the valve and having a bore for establishing communication be tween the interior of the valve and the expl0- sionchamber, and a valve controlling said bore, substantially as shown and described.

5. In a gas-engine, the combination, with a casing having slots, of a hollow valve mounted on said casing, and also having slots that can register with the slots of the casing, a block in the inner end of the casing, said block being provided on its inner end with a neck having an annular flange the rim of which is a short distance from the inner surface of the valve, a transverse bore in said neck, and a bore extending from the outer end of the block to the transverse bore in the neck, substantially as herein shown and described.

6. The combination of an explosion-cylinder, a piston in the same, a piston-rod, the shaft 0, the cam S, the pivoted lever S, the lever T, engaged with the lever S, the slotted casing IV, the hollow valve V within the easing, the burner 19, and the lever T, engaged with the lever S and connected with the upper end of the valve V, substantially as herein shown and described.

In testimony thatI claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.




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