US1149521A - Engine. - Google Patents

Description

E. I. HUNTER.

ENGINE. APFLICAUON FILED APR. 18. 1914.

Patented Aug. 10, 1915.

E" HUNTER,

ELBEBT I. HUNTER, OF STEPHENVILLE, TEXAS.

ENGINE.

Specification of Letters ZEatent.

Application filed April 18, 1914. Serial No. 832,839.

To all whom it may concern:

Be it known that I, ELBERT I. HUNTER, citizen of the United States, residing at Stephenville, in the county of Erath and State of Texas, have invented .certain new and useful Improvements in Engines, of which the following is a specification, reference being had to the accompanying drawin l his invention relates to improvements in gas engines and more particularly to an improved construction and arrangement of the engine cylinders in pairs, each of said cylinders being provided with a piston therein,

said pistons being arranged upon a common operating rod connected to the crank shaft, the driving force being applied simulta neously to the piston heads at the corresponding sides thereof whereby the crank shaft is continuously and positively driven.

The primary object of the invention resides in the provision of improved means for mounting the pistons in the engine cylinders and admitting the explosive charge simultaneously to the corresponding ends of said cylinders whereby, in the event that the charge in one cylinder is not ignited, the ex plosion of the charge in the other cylinder will operate upon the piston therein and thus insure the transmission of a positive driving force to the engine shaft.

My invention has for a further object to provide an improved construction of gas engine which is extremely simple, may be manufactured at small cost and is highly reliable and efficient in practical operation.

With the above and other objects in view as will become apparent as the description proceeds, the invention consists-in"certain. constructions, combinations and arrangements of the parts that I shall hereinafter fully describe and claim.

For -a full understanding of the invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a longitudinal section through the connected engine cylinders showing the arrangement of the pistons therein. Fig. 2 is a sectiontaken on the line 22- of Fig. 1; Fig. 3 is an enlarged detail view of the piston rod.

Referring in detail to the drawings, 5 designates the spaced engine cylinders which are provided with water jackets 6. The opposed ends of these cylinders are connected by the concentrically arranged sleeves? and 8 which are integrally formed with the hollow circular heads 9 at their ends, said heads being secured to the ends of the respective cylinders. These spaced sleeves and the heads 9 provide an additional water space 10. The outer end of each, cylinder is aso er 1 provided with a head 11 having a we space 12. The head 11 on one cylinder is formed with a double walledst'em or sleeve 13, said walls at their outer ends being in- Patented Aug. 10, 1915. I

tegrally connected to close the water space between said sleeves.

The piston rod indicated at 14 is mounted for longitudinal reciprocatory m vement through the inner tubular sleeve 8 between the engine cylinders and through the doublewalled stem or sleeve 13 on the cylinder head 11. Upon one end of this rod, the piston head 15 is arranged, said head engaging a' stop flange or collar 16. The extremity 'of the rod is threaded to receive a nut 17 whereby the piston head is retained in connection with said rod. A. second,- iston head 18 is also arranged upon the re. 14 for operation in the other of the engine cylinders, said rod having a threadedv portion intermediate of its ends to receive a sectional nut.

19 whereby the piston head is held against v an annular flange 0r collar 20 on said r d.

At the proper point on the piston rod the same is formed with the spaced peripheral flanges 21 between which suitable packing rings 22 are adapted to be arranged. 'These packing rings frictionally'engage the wall of the sleeve 8 and the inner wall of the sleeve 13 respectively for a purpose which willbe obvious.

Intake and exhaust ports 23 are provided in the opposite ends of each cylinder. 2 L designates. valve chambers with which the respective ports communicate. Each of the valve chambers 2a is provided with an intake" and exhaust valve (not shown). The valve chambers 24 are connected by pipes 25 to a manifold 26 which in turn is connected to a carbureter 27. This manifold is provided with the usual valve operated from the governor of the engine whereby the quantity of gas'supplied to the-engine cylinder is automaticallyiregulated in accordance with the load. Each of the valve chambers 24 -is further provided with a spark plug oil supply means is also provided to supply oil to the hearings on the piston rods in the sleeves 8 and 13.

la the practical operation of the engine, the gas having been admitted to the corresponding ends of the respective cylinders, and compressed by the pistons 15, the charges are simultaneously exploded so as to reverse the movement of the pistons 15 and 18 in the respective cylinders. If the explosion fails to take place in one cylinder, the explosion of the gas in the other cylinder will insure the application of the driving force to the piston rod, so that the crank shaft of the engine will be continuously driven. After the explosion in one end of the cylinder, the gas is admitted through the port at the opposite end of the cylinder so that the same will be compressed and when the piston has completed its stroke, in one direction, this new charge is exploded to reverse the movement oif the piston. It Will thus be apparent that by providing the cylinders arranged in pairs and the double piston,'a maximum of driving force is obtained and the positive and continuous opration of the engine assured. lit will also be appreciated that by the provision of the large water space, the engine cylinders and pistons are rapidly cooled.

From the foregoing desdiiiption taken in.

' connection. with the accompanying drawing, it is believed that the-construction, manner of operation and several advantages of my invention will be clearly and fullyundersteod. The device is simple in its construction, positive and reliable in its operation and provides means whereby a continuous and steady power may be derived in the use of explosive gas as the operating medium. it will of course be understood that the various accessories; necessary in the successful operation of this type of engine will he provided, but as same constitute no part of the present invention, the specific description thereof is deemed unnecessary.

While I have shown the preferred form and construction of the several parts employed, it will be understood that the invention is susceptible of considerable modification therein and I therefore reserve the privilege of resorting to all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

Having thus described the invention, What is claimed is: i

1. In an engine, spaced engine cylinders, a double-wall sleeve having enlarged chambered ends detachably secured to the 0pposed ends of the cylinders and constituting heads therefor, a reciprocating piston rod movable through the bore of the sleeve, and pistons fixed upon said rod to reciprocate in the respective cylinders.

.3. in an engine, spaced engine cylinders, integrally connected chambered heads detachably secured to the opposed ends of said cylinders, the connection between said heads having a longitudinal bore communicating at its opposite ends with the respective cylinders, water 'jacketed heads secured upon.

the other. ends of the cylinders, one of said heads having an elongated double walled sleeve integrally formed therewith, a piston rod extending through the bore of said connected heads and through said sleeve,

packing rings secured upon said rod for trictional engagement With the Wall of said sleeve and said borerespectively, and pistons fixed upon said rod to reciprocate in the respective cylinders.

In testimony whereof I hereunto afi ix my signatrre in the presence of two Witnesses. ELBERT I. HUNTER. l i itnesses i. P. Box, C FnneUsoN.

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