US1250837A - Internal-combustion engine. - Google Patents

Description

D. H, FRANCIS.

INTERNAL COMBUSTION ENGlNE. APPLICATION F |LED DEC. 7. I916.

Patented Dec. '18, 1917."

Atto rn eys pair INTERNAL-COMBUSTION ENGINE.

To all whom it may concern..-

Be it knownthat I, DANIEL H. FRANCIS,

' a citizen of the United States, residing at Grand Junction, in the county of Mesa and State of Colorado, have invented a new and useful Internal-Combustion Engine, of which the following is a specification.

The present invention appertains to internal combustion engines, and aims to provide novel and improved means for con trolling the intake and the exhaust, this invention being animprovement over the internal combustion enginexlisclosed' in my cogending application Serial No. 68,771 file ecember 27, 1915.

One object of the invention is the provision of novel means for reducing the counter pressure against the controlling valve.

Another object of the invention is the pro-- vision of novel means for lubricating the valve and accompanying parts.

lVith the foregoing and other objects 111 view which will appear as the description proceeds, theinventlon resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made with in the scope of what is claimed without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, whercinz- Figure 1 proved construction, portions being shown in plan.

Fig. 2/is a vertical section taken on the line 2-2 of Fig. 4, the valve being removed. v

Fig. 3 is an elevation of the valve.

Fig. 4c is a vertical section taken on the line 4-4 of Fig. 2.

.Fig. 5 isa sectional detail illustrating a modification.

A single cylinder 1 is illustrated in the drawing, but it is apparent that the invention can be used with multi-cylinder engines, as disclosed in my co-pendlngapphcation. A valve housing or casing 2 is secured to .the end of the cylinder. 1 to provide a head Y therefor, and said housing is provided with a tapered or conical bore 3, the larger end of which is. open, and a cap a is secured in any suitable manner to the housing 2 across the larger end of. the bore 3. A tapered or.

conical valve 5 fitted Within the bore3 Specification of Letters Patent.

is a horizontal section of the 'im- Patented Tree. 1%, 191?.

Application filerl December 7, 1916. Serial No. 135,650.

and seats thereagainst to provide a tight fit, and the housing 2 has ports 6 and 7 com municating with the interior of the cylinder, and opposite ports 8 and 9, while the valve 5 has a diametrical passage 10 adapted to communicate simultaneously with passages,

6 and 9 and with passages 7 and 8. The valve 5 is rotated in any suitable manner by connecting it with the crank shaft or other rotating part of the engine, so that the passage 10 registers with the ports of the housing at the proper times during the intake and exhaust strokes of the piston. The valve 5 has a stem 14 projecting from its smaller end out of the housing 2 for rotating the valve.

As a means for reducing the counter pressure against the larger end of the valve due to the combustion of the gaseous mixture Within the auxiliary explosion chamber between the larger end of the valve 5 and the cap 4, the larger endof thevalve 5 is provided with a' centrally located boss 11 of sufficient diameter. to leave the desired area of the larger end of the valve 5 around and is slidable and rotatable snugly within a cavity or recess 13 with which the cap 4 is provided, whereby the pressure cannot be imposed upon the face of the boss 11', thus reducing the pressure on the larger end of the valve proportional to'the area of the boss 11. The housing 2 has a port or passage '1 1 establishing communication between the interior of the cylinder and the auxiliary explosion chamber between the valve 5 and cap 1, so that when the carbureted air is supplied into the cylinder, at small portion thereof will flow through the passage 14: into the auxiliary explosion chamber, in order that when the explosion occurs, the combustion will provide the desired pressure against the larger end of the valve 5 to force the valve against its seat during the explosion, thereby presenting a counter pressure to resist pressure which 1 ice ire

port 17 extends to the periphery or other suitable point of the member 15, and the member/.15 has a central upstanding-nipple communicating with the port 16 and rotatablyengaging the exhaust pipe or manifold 20 which can be stationary. A carbureter or other fuel supplying means 21 is connected to the -member to communicate with the inlet port 17, and'the member 15 has a handle 22 for oscillating it through a semi-circle to reverse the member 15. As illustrated, the port 17 communicates with the port 8 and the port 16 communicates with the port 9, so that when the passage 10 registers With the ports 7 and 8, during the intake stroke of the piston, the carbureted air is drawn into the cylinder, and when the passage 10 registers with the ports 6 and 9, during the exhaust stroke of the piston, the exhaust gases are forced out through the port 6, passage 10, ports 9 and 16 and exhaust pipe or manifold 20. By reversing the member 15, the carbureted air will flow into the cylinder from the port 6 and the' exhaust gases will force out through the port 7, thus reversing the operation of the engine.

The valve is lubricated, and for this purpose, the housing 2 has a longitudinal groove 23 extending along one Wall of the bore 3, and has an inlet aperture 24 in said wall beyond one end of the groove 23. A lubricant supply tube or pip 25 isconnected to the housing 2 to communicate with the aperture 24, and the housing 2 and cap 4 are provided with a passage or duct 26 extendmg from said wall of the housing beyond the other end of the groove 23 into the cap "and having branches 27 and 28. The branch 27 opens. into the auxiliary combustion chamber from the cap, and the branch 28 leads to the Wall of the recess 13 and cylindrical surface of the boss 11 to lubricate the packing rings and accompanying parts. The valv 5 has longitudinal grooves 29 and 30 adjacent-to its smaller and larger ends, and when the valve is in position for the flow of carbure'ted air into the cylinder during the intake stroke of the piston, the

tends into the housing 2. Thus, the lubricant will flow from the tube 25 through the aperture 24, groove 29, groove 23, groove 30 and duct 26, thereby supplying lubricant to the contacting surfaces of the housing and valve.- The valve 5 cuts off the connection between the groove 23 and aperture 24 and duct 26 when the valve is moved away from intake position, so that 'the'fiow of lubricant is intermittent, the grooves 23, 29

and 30 holding lubricant which is supplied tothe Walls of the housing and valve.

Fig. 5 shows a duct 24 communicating with the lubricant chamber in 'the smaller end of the bore 3 into which lubricant flows from the tube 25, and the,duct 24 is interhousing having an auxiliary combustion a chamber therein between the larger end of the valve and cap, and the larger end of the valve and cap having an interfitting recess and boss reducing the area of said combustion chamber, said combustion chamber surrounding the boss. 7

2. In an internal combustion engine, a housing having a conical bore with its larger end open, a cap attached to the hous ng across the largerend of said bore and having a recess, and a conical valve seated within said bore for controlling the flow of gas and having a central boss at its larger'end fitting snugly in, said recess to reduce the pressure against the larger end of the valve, there being an auxiliary combustion chamber-between the larger end of the valve and cap adapted to communicate with a cylinder.

3. In an internal combustion engine, a housing, a valve working therein for controlling the intake and exhaust, said housing having-a chamber to communicate with an' engine cylinder, and means for supplyin lubricant to the housmg, the housin an v'alve having coo'perable lubricant conductlng means communicating with said chain-,7

her and adapted to register when the valve is in intake position to suck the lubricant from said means.

4. In 'an internal combustion engine, a housing having a conical bore anda-combustion chamber at its larger end','- aconical valve seated in said bore and rotatable to controlthc intake and exhaust, the housing having a duct communicating with said chamber, and means for conducting lubri-' cant to the housing, the housing and valve having lubricant conducting grooves adapt ed to register when the valve is in intake position for establishing communication between said means and duct.

5. In an internal combustion engine, a

- housing having a conical bore and a combustion chamber at the larger end of the bore, a conical valve rotatable and seated in said bore for controlling the intake and exhaust, the housing having a duct communicating with said chamber, a lubricant inlet, and a lubricant groove between said duct and inlet, and the valve having grooves to establish communication between said groove and the lubricant inlet and duct when the valve isin intake position. a 6. In an internal combustion engine, a housing having a conical bore, a cap secured to the housing across the larger end of said bore and having a recess, a conical valve rotatable and seated within the bore for con trolling the intake and enhau'st and having a boss at its larger end working snugly in said recess, the housing having a lubricant groove, a lubricant inlet beyond one end of the said groove and a lubricant duct beyond the other end of said groove and extending communication between the aforesaid groove and inlet and duct when the valve IS in inlet position.

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

DANIEL H. FRANCIS.

Witnesses:

HUGH R. FRAncIs, HARRY ST. CLAIR.

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