US760631A

US760631A - Gas-engine.

Info

Publication number: US760631A
Application number: US5892001A
Authority: US
Inventors: William M Jewell
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-05-06
Filing date: 1901-05-06
Publication date: 1904-05-24
Anticipated expiration: 1921-05-24

Description

No. 760,631. jPATENTED MAY 24, 1904.

W. M. JEWBLL.

"GAS ENGINE AIILIOA'IJION FILED MAY 1 1901- N0 MODEL. I 2 SHEETS-SHEET 1.

' Inn 6M6??- v No. 760,631 PATENTED MAY 24:, 19 04.

V W." M. JEWBLL.

GAS ENGINE APPLIOATION IILED MAY}, 1961. i

F0 MODEL U I ED STATES" 1?a tentediiltay f PATENT ()FrficE. M

WILLIAM. M. JEWELL, or CHICAGO, LLINOIS.

. GAS-ENGINE.

srEcrrIcA'rIoN forming part of Letters Patent No. 760,631, dated May 24, 1904: Y v Application filed May 6,1901. SeriaINo. 58,920. (No model.)

To all whom it concern Be it known that I, WILLIAM M. J EWELL, a citizenof the United'States, residing at Chicago, in-the countyof Cook and State of Illiprovide certain other improvements, which;

nois, have invented certain newand useful Improvementsin Gas-Engines, of which the following is a specification, reference being had to "the accompanying drawings. i

. My invention relatesto engines or motors operated by gases under pressure, and has particularly to do with engines of the type illustrated and describedin my application for Patent No. 56,678, filed April 20, 1901.

The object of my present invention is to pro vide certain improvements in the devices for igniting'the gases'in machines of the typereferred to by which'the gases may be ignited by a flame instead of by electricity, to provide an improved arrangement for exhausting the spent gases from the piston-chamber, and to will be hereinafter set forth.

* That which I regard as newwill b 56 in the claims.

' In the accompanying drawings,'Figur e 1 is a plan view, partly in section, thef upper half of the valve-chamber casing being removed. Fig. 2 is a vertical section on line 2 2 of Fig.

1, illustrating the igniting-apparatus Fig. 3 1s a plan view of the valve mechanism, some parts being broken away. Fig. dis a partial View of the piston-chamber,-onehalf of the casing thereof being removed; and Fig. 5 is an enlarged detail, being a vertical section of the piston-chamber, illustrating the packing As described in my application above re-v ferred to, the general type of engine, to which my present invention, relates comprises a plu: rality of chambers, preferably two in number, one of said chambers being termedthe pistonchamber and the other the valve-chamber)? Inthe piston-.chamber-is. mounted apiston which moves in a circular'paththerein and is impelled by gas under pressure admitted to the piston-chamber at one side of the piston.

. The valve-chamber, from which gas under pressure is supplied to the piston-chamber,

' communicates with said piston-chamber and is provided with valve mechanism which controls and regulates the admission of the gas to intersection. V ranged to supply the gas to the piston-cham-- ber immediately after the piston passes the chambers are arranged to intersecteach other at right'angles, the'point at which thegas is admitted from the valve-chamber to the pistons chamber lying at the point of intersection of such chambers.- The valve mechanism, controllingthe admission of the gas to'the valve chamber moves in a circular path in the valvechamber, so that the valve mechanism and the piston move through the spacevcommon to the two chambers, which lies atthe point of their The valve mechanism is arpoint of intersection ofthetwo chambers and as soon as gas has been supplied closes the piston-chamber behind the piston,.so..tl1at the piston is operated to a great extent ex pansion. Power is transmitted from the moving piston to ash aft through a spokemounted on said shaft andeXtending'in-to'the pistonchamber through a narrow slot provided in the inner periphery ofthe piston-chamber, which slot is .closed by a-=rotating band, which v "fits therein and is connected to ,thespoke.

The valve mechanism is rotated fnomasomewhat similar shaft, which receivesfcitsgpower from the piston-shaft, the valyeimechanism being connected to itsshaft-abypneormore spokes, which operate in connection with a band similar to the band ofthepiston-chamber, operatingin a similar: slot... Y

' With the foregoing. general description. I will now describein detail my improyed engi ne as illustrated in the accompanyingdrawinjgs.

, Referring to the the valve cylinder, andv 7 the piston-Cylinder,

which, as shown in- Fig.1, arearrangedto intersect each other at right-angles Each of said cylinders preferably consists. of two substantially semicircular sections fitted together and secured by flanges 8 9 on. their outer pe} ripheries by means ofboltsv 10. Inthe inner periphery of the-cylinder 7 and also of, the cylinder 6 is a narrow slotfextending entirely around the cylinder, in which is fitted an an nular band 11,]the outer surface of, which'is concave and conforms tothe nner surface of the piston or valve chamber, as the case may I said piston-chamber. The valveandpi ston be. In the ease of the piston-chamber said band 11 is connected by one or more spokes 12 to a shaft 13, arranged centrally of the piston-chamber and mounted in suitable bearings, so as to rotate freely. At the end of one of the spokes 12, within the piston-chamber, is mounted a segmental block or piston 14, which in cross-section fits closely in the piston-chamber. Said block may be fixedly secured to the band 11, or the end of one of the spokes may extend through said band, fitting tightly therein and carrying at its inner end the piston, as shown in Fig. 4. The band 11, as above stated, fits closely in the slot in the piston-chamber, and as it must rotate with the piston it is provided with suitable ball-bearings at each side, as shown in Fig. 5. Such ball-bearings are secured by providing recesses 15 16 in the chamber at opposite sides of the slot, bearing-rings 17 being mounted in said recesses and being movable therein toward and from the band 11.- The faces of said bearing-rings adjacent to the said band are concave to' receive balls 18, and suitable runways 19 are provided inthe sides of the band to receive said balls, as shown in Fig. 5. The bearing-rings 17 are adjusted to adjust the ball-bearings by adjusting-screws 20, fitted in the chamber, as shown. 1 I

The band 11 is packed to prevent the escape of gases from the piston-chamber (a similar construction being used for the valve-chamber also) by packing-rings 21 22, arranged at opposite sides of the band, as shown in Fig. 5, in the recesses 15 16, respectively, said rings being adaptedto bear against the sides of the band 11, as shown. Springs 23 are placed in the recesses 15 16, between the rings 21 22 and the surface of the chamber, which act to press said rings against the sides of the band 11. The bearing-surfaces of the rings 21 22 are lubricated by oil supplied through ducts 24 in said rings, as shown in Fig. 5, the oil being introduced into the recesses 15 16 through passages'25, closed by caps 26. If desired, means may be provided for forcing the lubricator through the ducts 24. As shown,

the packing-rings 21 22 are placed between the bearing-rings 17 and the piston-chamber, and they are so placed that their innermost edges lie in the angle formed by the inner edges of the band 11 and the adjacent inner surface of the piston-chamber, which are very nearly in contact with each other. By this construction the packing rings effectually close the very narrow slits between the band 11 and the adjacent portions of the chamber, thereby preventing the escape of gases.

27 indicates an exhaust-port formed in the piston-chamber a'short distance above the point of intersection of the piston and valve chambers, as shown in Fig. 4. Said port communicates Withan exhaust-pipe 28, through which the spent gases are exhausted in the piston-chamber in advance of the piston.

29 indicates the valve mechanism used where the piston-chamber is provided with the exhaust-port 27. Said valve mechanism consists of two sections 3031, respectively, said sections being carried by spokes 32, radiating from a shaft 33, mounted centrally of the valve-cylinder. The valve-section 30 is not entirely tubular, as it extends through an arc of only about two hundred and seventy degrees or less, an arc of about ninety degrees on its under side being cut away, as shown in Fig. 2. The ends of the valve-section 30 are closed by disks 34 35, thereby separating the explosion-chamber from the section 31 of the valve mechanism. The section 30 of the valve mechanism is designed to receive a charge of gas to be exploded and conduct it to the piston-chamber, where it is exploded.

It also operates to prevent the escape of gas in an upward direction in the piston-chamber after the explosion by closing the piston-chamber at the point of intersection against the passage of gas thereinto in an upward direction, as described in my application above referred to. To these ends gas is admitted to the explosion-chamber of the valve-section 30 from an inlet-pipe 36 through a port 37, placed about one hundred and thirty-five degrees from the point of intersection of the two chambers and provided with suitable valve mechanism, as described in my said application. A charge of gas is supplied to the explosion-chamber at each revolution of the valve mechanism as said chamber passes the port 37, the charge of gas being then carried in the direction indicated by the arrow in Fig. l to the point of intersection of the two chambers, where it is exploded. The explosion is effected by means of the flame 38 of a burner 39 or other suitable device, placed opposite a perforation 40 in the valve-chamber lying adjacent to the point of intersection of the two chambers inposition to be reached by the valve-section 30 before it arrives at such point of intersection. A portion of the valvesection 30 extends down a sufiicient distance to cover and close the perforation 40, such downwardly-projecting portion of the valveseetion 30 being provided with a perforation 41, adapted to register with the perforation 40. The perforation 41 is placed at the forward portion of the valvesection 30, as shown in Fig. 1, so that the two perforations 40 41 will register as soon as the forward portion of the valve-section 30 reaches said perforation 40. As soon as such perforations come into register the flame 38 will have access to the explosion-chamber and will explode the gases therein, which will then be discharged into the piston-chamber by the passing of the valve-section 30 through the piston-chamber at the point of intersection. This operation is arranged to take place just after the piston 14 passes such point of intersection, so that the exploded gases are disllO I charged into the piston-chamber behind the piston. Assoon as the explosionhas taken place the perforation, 40 is closed again by the ,valve-section' and later by the valvesection 31, which in the construction shown in Fig.3 is'cylindrical in form, andv consequently extends over the perforation 40. As already described, as soon as the valve-section 30 arrives at the point of intersection of the two chambers it closes the upper opening into the piston-chamber, and such opening remains closed as long assaid section is passing it and also while the section 31 is passing it, so that it remains closed during the greater part of the rotation of the piston, the spent gases from'the previous explosion being discharged in the construction shown in Fig. 4 through the exhaust-port 27. The lower passage from the valve-chamber to the pistonchamber at the point of intersection is also closed as soon as the valve-section 30 passes beyond the point of intersection by the valvesection 31 and remains closed as long as such valve-section is passing, so that the exploded gases cannot expand except in the direction in which the piston is moving, therebyoperating the pistonlargely by expansion.

It is evident that'instead of using a valvesection having the construction shown in Fig. 3 I may also use my improved igniting devices in connection with a valve-section similar to that shown in my former application and also illustrated in Fig. l, in the latter case the exhaust-port being arranged to comchamber; but as soonas the valve-section 42 arrives opposite the exhaust-pipe 43 gases may escape from the piston-chamber in ad- Vance of the piston through the valve-chamber above the valve-section 42 and thence, es-

cape through the exhaust-pipe 43, as described in my former application.

So far as concerns the igniting devices, therefore, my invention may be employed with eitherof the styles of valve mechanism illus- An exhaust-pipe 4:3 is provided,

trated. Furthermore, my invention is, not restricted to the. specific. details of the construction described, except in so far as such details are specifically claimed.

That whichI claim as my invention, and desire to secure by Letters Patent, is

1. A gas-engine, consisting of an annular valve-chamber, an annular piston-chamberim tersectlng said valve-chamber, a plston in sald piston-chamber, means in said valve-chamber for conductinggas to said piston-chamber, and a flame for exploding the tially as described.

2. A gas-engine consisting of annular intersectmg valve and piston chambers, valve mechgas, substananism in said valve-chamber, said valve mech anism having an explosion-chamber adapted to receive gases to be exploded, means for supplying gases to said explosion-chamber, a flame for exploding the'gases in said explo'sion chamber, and a piston in saidpiston-chamber, substantially as described. i

3. A gas-engine consisting of intersecting valve and piston chambers, valve mechanism v in said valve-chamber, said valve mechanism havlng an exploslon-chamber, aperforatlon in said valve-chamber adapted to register with a perforation in the explosion-chamber section,

of said valve mechanism, afiame for exploding the gases in said explosion-chamber, and a pis ton in-said piston-chamber, substantially as.

described. I y

4:. In a gas-engine, the combinatlon of mtersecting valve andplston chambers, a piston 1n said piston-chamber, valve mechanism in said valve-chamber adapted to conduct gases to be exploded to said piston-chamber, means for exploding said gases, and an exhaust-port in said piston-chamber at. one side of the point of intersection of said valve and piston chambers, substantially as described.

5. In a gas-engine, the combination of intersecting valve and piston chambers, a piston in said piston-chamber, valve mechanism in said valve: chamber, consisting of an explosionchamber section and. a cylindrical section 31, means for igniting the gases in sald exploslonchamber section, and an exhausteport commumcatmg with sald piston-chamber at one side of the point of intersection of said valve and piston chambers, substantially as described.

WILLIAM JEWELL.

v Witnesses: 1 S. H, JEW LL, JOHN L. JACKSON.