US730345A - Two-cycle gas-engine. - Google Patents

Description

No. 730,345. v PATENTED JUNE 9, 1903.

- A. M. 003mm TWO CYCLE GAS ENGINE...

APPLIUATION FILED JUHE;18, 1901- no 1101121. s sums-sum 1.

No. 730,345. 'EATENTED JUNE 9,1903.

'- A. M. GOBURN.

TWO cYcLE As ENGINE.

urmouzon FILED JUNE 18, 1901.

Ne 110mm. v s SHEETS-SHEET 2.

4 m: "cams warms co Pnoruumu. wAsmvmroN, a. c.

UNITED. STATES Patented June 9, 1903.

PATENT O FICE.

TWO-CYQLE GAS-ENGINE,

srnorrrcn'rron forming part of Letters Patent No: 730,345, dated June 9, 1903. Application filed re s, 1901. Serial No. 65,05 5. (No model.)

To all whom, it may con/own.-

Be it known that I, Avon MENZoR 003mm,; a citizen of the United States, residing at Daunt, in the county of Tulare and State of California, have invented anew and'us'eful Two-Cycle Gas-Engi'ne, of which the following is a specification.

This invention relates to engines Operated by gases generated by explosion within "the cylinders; and it consists in the construction, combination, and arrangement of 'parts, as hereinafter shown and described, and'specifically'pointed out in the claims.

In the drawings illustrative of theinvention, Figure 1 is a longitudinal sectional elevation. Fig. 2 is a plan view in transverse section. Fig. 3 is a transverse section on the line a a of Fig. 1. Fig. 4 is a transverse section on the line Z) Z of Fig. 1. Fig. 5 is a perspective view of one of the cylinder-heads detached.

The framework and outer casing are'in one piece of tubing 1, bored true to a gage, and adapted'to receive two cylinders 2 3, one in,

each end, the cylinders each having laterally.- projecting flanges 4 5, abutting against the ends of the tubular frame, as shown. The cylinders will be turned to correspond to but a trifle larger than the boreof the tube,-so that the latter may be shrunk. upon the cyli'nders by expanding the shell'or .casin g by heat and then inserting the cylinders and allowin g the shell to contract by'cooling, and thus form a very close union between them. The cylinders are closed at their outer ends by heads v 6 7, the heads being hollow, as at 8 0, and

bolted to the flanges d'and 5. The inner ends of cylinders are open, as shown, and the space 10 within the combined tubular casing and frame between the cylinders forms the crank- ,chamber and'also the chamber into which the explosive mixture of gas and air is drawn through alight check-valve 45 by the outward motion of the pistons and which is then compressed in said chamber upon the return stroke of the pistons simultaneously toward frame 1, as shown.

tively, .iyi-ththe hollow spaces 8 9 in the cylinder-headsfi and 7 by small apertures 16, so that a free circulation of the water will be permitted between the water-spaces.

17 18 are longitudinal channels or ducts 'formed'in the exterior of the cylinders 2and 3, leading from the inner ribs 13 let and connected with ports 19 20, the ports and channels forming connections between the chamber 10 and the cylinders 2 and 3. The inner portions of the cylinders 2 3 are cut away, as at 11 12 to lighten the cylinders, each of the cylinders at these points supported by ribs 11 12", as shown. At points opposite the ports 19 20 are located the exhaust-ports 21 22,0pening into the outer air through the sides of the cylinders and the casing 1.

23 24 are the pistons, which are of the trunk pattern and each provided with a transverse stud 25 26 to afford means for the reception of one end of connecting-rods 27 28, the other ends of the rods being coupled to reversed cranks 29 30 on a main driven'shaft 31, properly mounted through the casing or By this means the pistons being moved simultaneously to and from the crank-shaft serve to revolve ii. Proj ecting-outwardly from the closed ends of each piston are plates 33 to deflect the entering charge of explosive mixture in the usual man ner toward the top of cylinder.

Arranged to cover and uncover the entrances to the channels 17 and 18 are valves 34: 35, each with a valve-rod 36 37, passing outward through stuffing-boxes 38 39 in the easing 1 and provided with bell-crank levers 40 n, each of the bell-cranks connected by a rod 42 by their upper ends, .so that'motion imparted to the rod will simultaneously move the valves 34: 35, and .thus simultaneously cover or uncover the entrance to the chainbers 17 19. The rod 42 maybe connected by hand to govern the amount of explosive mixture entering the cylinders, and thus regulate the speed of the engine, or it may be attached to a suitable governor driven by the engine.

Each of the helical.

In case either cylinder should be disabled the engine may still be run by disconnecting rod 42 and throttling the disabled. cylinder by means of either valve 34 or 35.

Disposed centrally through the cylinderheads are the jump spark-plugs 43 44 of the usual construction and so connected and.

arranged that by connecting a secondary terminal from a Ruhmkorff coil to each plug simultaneous sparks occur in the cylinders by the use of but one coil, electrical connection being made between the plugs by the engine itself or when plugs are used having both electrodes insulated may be made by a wire from one plug to the other.

The air and the gas forming the explosive mixture are introduced into the chamber 10 through check-valve 45 in the casing 1.

Supporting-bands 46 47 will be clamped around the casingl at the ends and each band provided with projections 48 49 to afiord means for supporting the engine upon a suitable base or bed frame 49, which need not be heavy nor solid, as the reciprocating parts balance each other, and the explosions being produced simultaneously, thereby prevent any shock,especially when on the center, as a shock in one cylinder only when the pistons are both at the outer ends of the stroke is a serious matter, subjecting all the parts to severe strains and frequently causing breakage of the parts. By exploding the gas in both cylinders at once, however, this objection is avoided. By forming the outside casing of a single tube and shrinking it upon the cylinders a very light, compact, and strong structure is produced, especially suitable for automobile or launch use.

The helical arrangement of the water-chambers around the cylinders is an important feature of my invention, as it provides for a continuous flow of water through the waterchamber and insures a free, rapid, and 0011- stant circulation throughout all the waterchambers.

* What I claim as new is'- 1. In a gas-engine, the combination of the two oppositely-disposed open-ended cylinders having helical flanges or ribs to form waterchambers and provided with peripherallydisposed gas-passages leading from a central compression-chamber to the explosion-chambers, a casingiformed of a single length of metallic tubing having its opposite end portions shrunk upon the peripheries of the cylinders and forming the said central compression-chamber at a point between the two cylinders, the casing forming one wall of the gaspassages and one wall of all of the waterchambers on the peripheries of said cylinders, trunk-pistons in said cylinders, a crank shaft, and connectingrods extending between the pistons and the crank-shaft.

2. The combination in a gas-engine, of a pair of oppositely-facing cylinders, each provided with peripherally disposed ribs arranged to form waterjackets and gas-passages, a casing formed of a single length of metallic tubing shrunk tightly on all of said ribs and forming one wall of the water-jackets and gas-passages, the central portion of the tube forming a gas-compression chamber, valves arranged between the compression-chamber and the two cylinders to regulate the quantity of explosive mixture supplied to the cylinders, trunk-pistons in said cylinders, a cranked shaft, and connecting-rods extendin g between said cranked shaft and the trunkpistons.

3. The combination in a gasengine, of the oppositely-facing cylinders 2, 3, having helical ribs 13, 14 to form water-chambers and provided with longitudinally-disposed gaspassages 17 and 18 respectively in communication with cylinder-ports, a casing 1 formed of a single piece of metallic tubing shrunk on the ribbed and channeled cylinders and forming one wall of the water-chambers and gas-passages, the central portions of said tube forming a gas-compression chamber in communication with thegas-passages, valves Si and 35 for controlling a supply of gas from the compression-chamber to the passages 17 and 18 respectively, crank-shaft bearings supported by the tubular casing, a crank-shaft adapted to said bearings, pistons disposed within the cylinders and connected to said crank shaft, and exhaust ports leading through the walls of the cylinders and the casing, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

AVON MENZOR OOBURN.

Images