US1159482A - Gas-engine. - Google Patents

Description

J. C. ENGLISH.

GAS ENGINE- APPLICATION FILED NOV-27.1911.

Patented Nov. 9, 1915.

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INVENTOR Wyn??? ,SES

ATTORNEY J. c. ENGLISH.

GAS ENGINE. APPLICATION FILED NOV- Zh 1911 1,159,482. Patented Nov. 9, 1915.

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WITNESSES v BY //fi% a, m ATTORNEY J. C. ENGLISH.

GAS ENGINE.

APPLICATION FILED NOV. 21. 1911.

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J W 9m 8 4., n. w M 1 ATTORNEY arnr- Wren JOHN C. ENGLISH, CAMDEN, NEW JERSEY.

GAsmNeiuE.

Specification of Letters Patent.

Patented Nov. 9, 1915.

vApplication filed November 27, 1911. Serial No. 662,671.

To all whom it may concern: v Be it known that I, JOHN C. ENGL SH, a citizen of the United States, a resident of the city of Camden, county of Camden, and State of New Jersey, have invented certain new'and useful Improvements in Gas-Engines, of which the following is a specification.

The main objects of this invention are to provide improved means for the distribution of an actuating fluid in motors actuated byan elastic fluid under pressure, and, more specifically to provide in an internal combustion motor improved valves and valve actuating 'mechanism; and to provide other lmproveinents as will appear hereinafter.

In the accompanylng drawings, Figure 1 is a fragmentary longitudinal section of a four cyclegas engine constructed in accord- 'ance with this invention; Fig. 2 a frag'-' mentary side elevation of the same; Fig. 3 a fragmentary top plan View or end'elevation of-the same partly in transversesection on line 33 of Fig. 2, and Fig. 4 a front elevation of certainportions ofthe' samejin a stage of operation difl'erent from'that shown in the precedlng figures of the draw- 1ngs.'

Referring to the drawings, one embodiment'of this invention comprises a hollow cylinder l'in which reciprocates'in'the usual manner a piston 2.

'The head 301 the cylinder 1 is provided with a spark plug 4 arranged to generate a spark toexplode a combustible mixture of gases in the cylinder. The cylinder 1 is surrounded-by a waterjacket 5 providing apassage or compartment 6for water orother fluid :for cooling the cylinder.

For controlling the admission of a combustible mixture of gases into the cylinder,

thereis arranged upon one side of the cylinder adjacent to its inner end a substantially cylindrical valve case 10, one side of which is provided witha continuous flat annularflange 11, which is rigidly secured bymeans of cap screws 12-to' a corresponding fiatannular seat 13 provided therefor on'the adjacent side of the cylinder 1". The valve case 10 is 'p'rovidedwith a waterjacket 15 providing a water compartment '16 which communicates with the water compartment- 6 through a suitable 1 opening '17 provided therefor-through the vwalls ofthe cylinder 1 and valvecase 10. a

, The. central portion of the inner surface of the valve case 10 is in. the form of a concave, I

which is adapted-to be connected to a sup-' ply pipe 32 for conductinga combustible mixture of gases into theannular passage 30.

For quickly-opening or closing. the ports 25 in. the conical "alve seat 20, two cooperating conical disk valves 35 and 36 are provided. These valves are arranged coaxially with the conical valve seat 20, and one, 35, of these valves bears llPOIlltS convex conical side directly against the concave conical valve seat 20 andis integral with-or rigidly secured to the innerlend of the hollow valve stem 22. The other, 36, of these valves is arranged inside of and with its convex conical'slde in slidlng contact with the conical vconcave inner side of the vfirst mentioned; valve, and Integral or rigid with the inner end of a valve stem 37,-which extends'snugly but'rotatively throughthe hollow valve stem 22 coaxially therewith and projects outwardly'therefrom. Each of these valves 35 and 36 is provided with a plurality of ports 38 corresponding in number and arrange ment with the ports 25 of the valve seat.

The ports 38 of one valve are arranged to registerwith theports 38 of the other valve when the valves are in position for this pur pose, and the ports 38 of bothvalves are arranged to register with the ports 25 of the valve seat 20 when the valves are positioned for thispurpose.

For oscillating the valves] 35 and v 36 quickly in opposite directions respectively to open and close the ports 25 ofthe'valve seat20, a lever 40 is adjustably secured to the'outer endfofthe'hollow valve stem 22,

and a lever l lis' adjustably secured tothe outer end 'ofthebther valve'stem 37. The

latter lever 41 projects in opposite directions from its valve stem 37 and one end of this lever is pivotally. connected to one end of a link-42, the other end of which is pivotally connected to a transmission lever 43 which is mounted to oscillate about a fixed pivot 44 extending through one end of the transmission lever in a direction parallel to V the axis'of oscillation of the valves 35 and 36; The other end of the transmission lever 43 is pivotally connected to one end of a link '45, the other end of which is pivotally connected to the free end of. the lever 40.

The two valve levers 40 and 41 are thus connected so that when either one is oscillated in one direction, the other will be oscillated in the opposite direction, the arrangement being such that the valve lever 40 secured to the tubular valve stem 22 will always oscillate at a greater speed of rotation than the lever 41 secured to the other valve stem, tlfe ratio of the two speeds being, in the case illustrated, about two and a half to one, and the valves 35 and 36 will oscillate accordingly.

For holding the two valves 35 and 36 always yieldingly and in sliding contact take up any wear and to prevent leakage between the valve and the seat, a compressed spiral spring 47, or other compressed yieldng means, may be interposed around thetuabularvalve stem 22 and between the inner valve lever and the valve case 10 in an 7' annular recess 48 provided therefor in the valve case.

. For oscillating the valve levers 40 and 41,

suitable connection may be made between one of the valve levers and a moving part of the motor, but the connection is preferably made, as in this instance, between a moving part of the motor and the outer valve lever 41 which has the slower motion. The connection for oscillating the valve levers is also preferably such that an intermittent movement will be given to the valves so that the valves will not be moved under any excessive pressure and will not be performing any unnecessary work. 'In this instance, the free end of the outer valve lever 41 is connected to one end of a con-' necting rod 50, the other end of which fits snugly but slidably in one end of a tubular eccentric rod 51, the other end of which is .rigidly connected to an eccentric strap 52,

slidably mounted upon an eccentric 53 adjustably secured to an eccentric shaft 54 which is mounted to rotate upon 'a fixed axis. The eccentric shaft 54 may be,.as in Fig. 2, parallel to the axis of oscillation of the valves 35 and 36, but in some instances, it is desirable to have the eccentric shaft arranged substantially at right angles to thisposition.

The eccentric shaft 54 is connected to the main driving or crank shaft 55 of the motor, as for instance, by a gear 56 fixed upon the eccentric shaft and engagingapinion 57 fixed upon the main driving shaft, soas to' give-the eccentric shaft 54 one revolution to every two revolutions of the main driving shaft. The eccentric 53 is proportioned to give the proper amount of movement to the valves 35 and 36 to open and close the valve ports in about one-quarter of av revolution of the eccentric and to permit the valvesto remainstationary during-the remainder of each revolution of the eccentric.

Two fixed stops 58 and 59 are arranged upon opposite sides respectively of the valve lever 41 to limit its movement, and a nor- 'mally compressed spiral spring 60 surrounds the connectingrod 50 between a stop 61 fixed upon the connecting rod and the free end of the tublar eccentric rod 51. The eccentric rod 51 is provided with a longitudinal sl0t65 in which engages a pin 66 fixed upon the lower portion of connecting rod 50. The outer or upper end of the slot 65 is positioned to engage against the pin 66, at the ,proper moment, to actuate the valves and to remain in engagement for a predetermined period, in this instance for about a quarter of a revolution of the eccentric 53, which corresponds to a single oscillation of the valve lever 41 from one stop 58 to the other stop 59 and return, the pin 66 being held in engagement with the end of the slot 65 during this period by the force of the compressed spiral spring 60. During the remainder of each revolution of the eccentric 53, the valves are held closed by the force of the spring 60 which holds the valve lever 41 against the stops 58, and during this period the tubular eccentric rod 51 slides over the lower end of the connecting rod 50 compressing the spring 60, the slot 55 being long enough to permit of a full revolution of the eccentric 53 without bringing the lower or inner end of the slot into contact with the pin 66.

The ports 38 in the valve, and the stops 58 and 59 are arranged so that when the valve lever 41 is against the stop 58, the ports of the valve will not overlap each other, and one valve will act as a closure for the other valve. When the valves are in this position, a slight movement of the valves in opposite directions will begin to open theports through the valves and the ports 25 through the valve scat, and when the valve lever 41" is against the stop 59, the ports38 inone valve register with the ports 38 in the other valve, and the ports 38 of both valves register with the ports 25 in the valve seat, thus giving a full opening or the valve ports into the cylinder 1 for the .trol the inlet and the exhaust respectively of the motor, the eccentric of the exhaust being set in an angular relation tothe eccentric of the inlet to secure the proper timing of the exhaust. In Fig. 2 of the drawings, the inlet and the exhaust mechanisms are both shown, for convenience of illustration, upon one side of the motor, but it is to be understood that theexhaust valves may be placed upon opposite sides of the motor from the inlet valves, if preferred. Where both inlet and exhaust valves are placed upon the same side of the motor, the exhaust valves may be conveniently arranged, as shown inFig. 2,

below the inlet valves, a suitable passage 70 being provided between the exhaust valves.

and an exhaust port 71 opening from the inner end of the cylinder 1. A suitable inlet port 72 is, in this case, arranged adjacent the exhaust port 71 and leading from the space inside of the valve 36 into the interior of the cylinder 1.

It is thought that the operation of this improved distributing mechanism will be clear from the foregoing description. It is to be understood that the construction is such that when the piston 2 is about to begin its intake stroke, the intake valves begin to open, the valves moving in opposite directions respectively, and continuing to open until the ports 38 of the intake valves register with the ports 25 of the valve seat. The valves then. are automatically reversed in movement and continue to move in the reversed direction until the valve lever 41 comes in contact with the stop 58 to stop the movement of the valves temporarily, the valves being when thus stopped in position to close the intake ports This closure of the intake ports takes place at about the beginning of the compression stroke, and the intake valves remain closed and stationary during the compression stroke, and during the greater part of the explosion and exhaust strokes. The exhaust valves are arranged to open slightly before the beginning of the exhaust stroke and remain open only substantially during the exhaust stroke. he valves may, however, be proportioned or adjusted to secure any desired timing of the various events of the distribution.

Although only a single form has been illustrated in which this invention may be embodied, the invention is not limited to the specific structure shown, but may be modified to meet various needs without departing Copies of this patent may be obtained for my hand this 18th day of November A. D

from the spirit of the invention or the scope of the appended claims.

Having thus fully described this invention, I claim and desire to protect by Letters Patent of the United States:

1 In an internal combustion motor, the combination with a pair of cooperating coaxial conical disk valves arranged to control,

a port, of a pair of levers of diflerent lengths in fixed relation with said valves, a third lever arranged to oscillate on a fixed pivot, links connecting said first mentioned levers and said third lever, and means operative to impart oscillatory motion to one of said first mentioned levers and to oscillate the other of said first mentioned levers through said third lever 'to operate said valves.

2. In .an internal combustion motor, the combination with a pair of coaxial disk valves, of a pair of levers in fixed relation with said valves and of difierent lengths, a third lever connected with said first mentioned levers and arranged to oscillate on a fixed pivot, and reciprocating means operative to impart motion to one of said first mentioned levers whereby the other of said first mentioned levers will be moved to rotate said valves in opposed directions and at different speeds.

3. In an internal combustion motor, the combination of a pair of coaxial disk valves, a pair of levers of diflerent lengths connected to a third lever and in fixed relation with said valves, reciprocating means operative to oscillate the shorter of said pair of levers and to move the longer of said pair of levers through said third lever to rotate said valves in opposite directions and at diflerent speeds, and means operative to cause said valves to remain in relative stationary relation during a predetermined interval.

4. The combination in an engine comprising a port, of two valves operative to open or close said port, and means for reciprocating each of said valves, said last mentioned means comprisin a pair of levers in fixed relation with sai valves, a third lever operatively connected to said pair of levers, and means operative to reciprocate one of said pair of levers whereby said valves are caused to move in opposite directions to open or close said port.

In Witness whereof, I have hereunto set JOHN C. ENGLISH. Witnesses: Y

A. I. GARDNER, ALEXANDER PARK- five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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