US988514A - Explosive-engine. - Google Patents

Description

E. H. SHERBONDY.

' Patented Apr. 4, 191] 3 SHEETS-BREE? 1.

E. H. SHERBONDY/ EXPLOSIVE ENGINE.

APPLICATION FILED SEPT. 21, 1908. 988,514. Patented Apr. 4, 1911.

. 3 SHEETS-BEBE! 2.

E. H. SHBRBONDY.'

BXPLOSI VE ENGINE. APILIOATIOH FILED IEPT. 21. 1908.

Patented Apr. 4, 1911.

3 SHEETS-SHEET 3- ,1 3. L. v1 51.2..n 1:? r 5113113071371141 1% UNITED STATES PATENT OFFICE.

EARL H. SHEBBONDY, OF CLEVELAND, OHIO, ASSIGNOR 0F ONE-HALF T0 WILLIAM E.

SHERBONDY, OF CLEVELAND, OHIO.

ExPLos'Iv .cl-ENGINE.

Specification of Letters Patent.

Patented Ap1z4, 1911.

To all whom it may concern: I

Be it known that I, EARL H. Qnmuzosnr', a citizen of the United States, resident of Cleve.- land,county of Cuyahogo. and State of Ohio, lie-re invented it new and useful Improvement in Explosive-Engines, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle. so as to distinguish it; from other inventions. 7

Mr present invention relating as indicated to explosive motors, has more pa rticular regard to explosive gas engines ot'thc two cycle type of construction. but as will be evident from further description of said invention, various features thereof are equally adaptable to use in'eonnection with various forms of motors of the general class in hand.

-The object. of the invention is to provide an explosive motor of simple and compact construction, and one possessing increasml etlicieney over prevailing (anistructions,such efficiency being secured both by improving the. control of the admission of th fuel to the explosive chamber of the engine, and by regulating the fuel supply.

To the accomplishment of the above and related ends said invention then consists of the means hereinafter fully des ribed. and particularly pointed out in claims.

The annexed drawings and the following description set forth in detail cer ain mechanism embodying the invention, such disclosed means constituting. however, but. one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings:-Figurc l is a part side elevation and part section of a two cylinder, two cycle gas engine. embodying my several improvements; Fig. 2 is a transverse section with part shown in eleyation of one cylinder in said engine. the

)lnne of the section being indicated by the ine 2-2. Fig. 1; Fig. 3 is a tran-iersc section of the fuel supply control mechanism and appurtenant parts, the p ane of such section eiug indicated by the line ii il, Fig.

1; Fig. 4 is a plan view of the cugimg'a part. of the control mechanism of Fig. I, being shown in scctionpl ig. 5 is a horizontal section of one of the cylinder taken on the line 5-5 Figs. 1 and 2; Fig. (i is .1 similar horizontal section taken on the line t3-- 6 1 and 2; Fi 7 is a horizontal section oi the control mechanism of Fig. 3 taken on plane indicated by line 7-7 on said Fig. 3; Figs. 8 and 9 are similar sectional views of such control mechanism taken on planes in- 6 (limited by the lines 8-8 and 9-4) of the same figure; and Figs. 10 and H are vertical sectional views of a detail of the cylinder and piston showing the same in ditl'erent cooperating positions.

The engine illustrated in general assembled view in Figs. 1 and 2. will be seen to comprise at base A upon which is secured the crank case A, which latter in turn is surmounted by the cylinders such cylinders as usual in gas engine construction including a removable cap portion A". The engine. being as indicated of the two cycle type. the crank case, as is general in this type of engine, is

utilized as a compression chamber, and to this end is separated into two chambers no corresponding with the cylinders A? A", repectively, by means of end bearings a and middle bearings u'-' wherein is journaled the crank shaft A. Connected with said crank 0 shall. by means of suitable connecting rods 0. are hollow cylindrical pistons l3 respectively held in cylinders .V. I. being with details in the construction of such pistons ll and the cooperating portion oi the cylinders, 35

and with the mechanism for controlling the supply of fuel to the crank cases (1,llltll the present invention is chiefly coiu'erncd, these l'caturcs will be taken up in the order named.

That. portion (1" of each c 'lindcr within which the charge is lired is cast hollow. and suitable inlet connections (1 and outlctcounections if for maintaining a circulation of water (.I' like cooling liquid thcrethrough are provided as usual. For transferring the charge from the crank case con tituting, as stated. the (UllBPl't -si n chamber of a cylinder. to the explosion chamber a of such cylinder. 1 simply utilize a selected portion u ol. the hollow cooling chamlu r, such por-' tion being suitably separated from the remaindcr ot' the chamber, ad will be readily understood. 1 an! thus enabled to do awai with the necessity for exterior connections {or coluluciing'thc. charge from the eomprcssion chamber to the explosion chamber. Similarly. a portion a of the same coo'linu chmnber is setoil and connected \vith tlie exhaust A, for rumba-ting the spent gases from explosion chamber a. The corm- 118 "MM-M..." '.,,r,. '...;..-c.1.......-...,... t i,... M. 4. .4 Wm. HQ... M4

the upper and lower openings of said chainher a" in relation to the piston, that the port I) in the latter uncovers the lower chamber opening bet'ore the-upper opening is uncovered. See Fig. it). .liy this means the charge, under its full initial compression, is admitted into the chamber a, whence it is ready to rush into the explosion chamber a just assoon as the opportunity presents, therebeingthns no possibility presented for such chamber to he tilled with the waste gases from the explosion chamber. \Vheu such gases are admitteththeir course is deter mined, so as to most etl'cctually secure the necessary scavenging of the. explosion chamher without wasting the charge, by means of the novel construction of the deflector plate B which I use upon my piston. 'lb s deflector, which for convenience in construction, will ordinarily be cast separate from the piston and then secured thereto, is in the form of a half-annulus with a curved outer face, and a substantially vertical inner face. Figs. 10 and 11, although the form of the latter is immaterial. Its resoective ends moreover are provided with lateral portions 7) inclosing more or less the outer face, Fig. 1. This outer face comprises a sharply ottset portion I) to the face of the piston. Such face portion 1/ is only a trifle removed from the inner face of the cylinder, and is inclined outwardly and toward the same, so

, that when the upper opening of the chamber a" leading from the crank case is first uncovered, the gases forming the charge, which will at this time be under the greatest pres-.

sure, are deflected upwardly at a sharp angle such that they will hug the cylinder walls, and strike the curved inner face of the cylindcr cap A; The continued downward movement: of the piston opens the port more and more widely, and as the charge under continually decreasing pressure'is thus more freely admitted, it strikes the curved portion 7) of the face of the deflector, such curve being calculated so to deflect the charge, following the initial admission thereof, as to completely fill the explosion chamber without intercepting or pocketing any portion of the waste gases. The jetfirst admitted and thus sharply deflected upwardly as described, A

obviously will travel in advance of the larger volmne subsequently admitted; the last jets in fact never reach the farther wall of the expanding chamber. The result:v of this construction is obviously a much more thorough scavenging of the chamber than is obtainable where the prevailing construction of.

deflector plate is employed, and it the exhaust port be properly disposed and movement of the piston correctly timed, very little of the charge need be wasted.

Located intermediately between the two engine cylinders A upon a, laterally projecting portion of the crank case A is a an annular series of ports respectively d 4gnated communicate with the interior of the casing. The. upper C of said chambers. which is the larger of the two, communicates directly with the atmosphere through an opening 1, and is designed to supply the necessary amount of air forformiug the charge; while the lower chamber C" is connected with a. suitable gas supply pipe 1 for supplying the gas or equivalent fuel for such charge.

Extending longitudinally of the casing is a shaft (3 the lower end of which is stopped iu'a suitable lx-aring a conveniently provided in the inner taco of the crank case casting. This shaft. designed to be driven directly from the crank shalt A by a gear u. on the latter meshing with another gear on the shaft. Shaft C bears, on line with the lower end f the casing, a rotatable cylindrical valve 'that serves to close such lower easing end, and to control communication between the interior of the easing and the respective ports c c that lead to the separated crank cases. Reciprocally mounted upon said shalt above the rotatable. valve is a sleeve c to the lower end of which is secured an annular valve adapted to or lowered by means ot a regulating nut 0" as will be readily understood.

The upper portion of the shaftis inelosed within a continuation l) of the valve and governor casing C just t'ltStllllCt'l, and hears, reciprocally mounted thereon near its end, a cam (Z that. as the shaft. rotates, alternately actuates two pring pressed plungers D to operate the ignition devices E of the respective cylinders. Such cam (Z is in the form of a sleeve, the cam face of which is pitched, so that as the sleeve is raised or lowered the timing of the ignition is corre- 50 for attention in this connection, such feature consisting in the creation of a slight vacuum or suction effect in chamber a just at the time when, see Fig. 2, the piston approaches its lowermost position and free connnuni- 'tion of a pair of cylinders, a divided crank case, a cylindrical casing located intermediately between the cylinders and having ports leading to the divisions of said crank case respectively, an annular chamber surroundspondingly advanced or retarded. Such through ports 1, crank-case a, piston port raising and lowerin of the sleeve is effected b and passage a with explosion chamber by means of a hol ow cylindrical member a of the cylinder. Such suction client is D rotatably secured to the upper end of conveniently secured in the ease of paired the same b means of pins (1' engaging helicylinders such as I here show by running 70 cal ways in said member, so that upon the exhaust pipes A of the respective cylrotation of the member by means of a lever inders together at such an angle, see Fi (1 the desired adjustment of the cam is 4, that the discharge of the waste gases' eflected. This lever engages a suitable through the one tends to produce a vacuum 10. ratchet d on the upper end of the casin in the other. ()ther, and mechanical, means I), whereby it is retained in any desire: may be employed instead of this device, if t position. I so desired, but even with a slight suction g The details of the ignition devices E need effect, the compression perceptibly ini not be further noted than to observe, see creased with corresponding increase in efli- Figs. 1. 2 and 4 that it is of the makeand ciency. i 30 E break type, the plungers D just referred to Other modes of applying the principle of l as being reciprocated by the cam (I being my invention may be employed instead of adjustably connected with the oscillatory the one explained, change being made as reclement ofthe devices by suitable connectards the mechanism herein disclosed, pro- 7 ing rods e. The discharge pipe a through vided the means stated by any of the fol- 85 which the water escapes from the cooling lowing claims or the equivalent of such jacket of the cylinder, affords a convenient stated means be employed. f support for a bus-bar c, Fig. 4, that serves I therefore particularly point out and to lead the current to the spark plugs c of distinctly claim as my invention the respective ignition devices. Such bar, 1. In an explosive engine, the combinahowever, I do not connect directly with the tion of a plurality of cylinders, a divided spark plugs, but oscillatorily mount thereon crank case, a casing located intermediately i switch levers e that are adapted to bridge between said cylinders and having ports the space between the bar and the plug. leading to the divisions of said crank case Either or both cylinders it will thus be seen respectively, fuel connections for said cas- 95 may be easily and conveniently cut out bying, and a rotatable valve in said casing simple manipulation of such switch levers. adapted to control aforesaid ports.

The general cycle of ope 'ation of the en- 2. In an explosive engine, the combinagine need not be further noted than to rctier. of plurality of cylinders, a divided 13 mark that the connection of shaft C is crank case, a casing located intermediately arranged to properly correlate the admisbetween said cylinders and having ports sion of the charge into the respective enleading to the divisions of said crank case gine cylinders with the movement of the respectively, a fuel inlet port, a shaft expistons therein. The intake valve, governor, tending longitudinally of said casing, :1 m

10 and ignition devices all being actuated by tatablc valve borne by said shaft'and adapt- 395 this same shaft, the controlling mechanism ed to control the outlet ports of said casing, of the engine is obviously simplified in and governor mechanism operated by said construction and rendered correspondingly shaft and adapted to control the inlet. port. compact. Increased ease of adjustmentaud of said casing.

control, as well as economy of operation 3. in an explosive engine. the combina- 110 naturally follow. The further and marked tion of a plurality of cylinders, a divided economy secured by designing the outer crank case, a casing located intermediately face of the deflector on the piston with a between said cylinders and having ports due regard for the function wnich it suhleading to the divisions of said crank case serves, all as hereinbefore described, has respectively, a fuel inlet port, a shaft exbeen amply demonstrated by tests under tending longitudinally of said casing and. practical operative conditions. It should C(flHitxlOtl to be driven from the crank-shaft he further explained that this result is best of said engine, a rotatable valve borne by secured vjere the curveof the inner face said shaft and adapted to control the outlet of the cap or dome A is formed to coports of said casing. a reciprocable'valve operate with that of deflector B in profor controlling the fuel inlet port, and a dueing the desired sweep of gases through governor operated by'said shaft and adapted the expiosion chamber. A feature in the to reciprocate said inlet control valve. operation of the exhaust has been reserved 4. In an explosive engine,' the eombinaing said casing, said chamber having ex- 65 cation is established from inlet ports 0' c ternal fuel connections and being connected with said casing by an annular series of ports, ashaft extending longitudinally of said casing and connected to be driven from the crank-shaft of said engine, a rotatable cylindrical valve borne by said shaftand adapted to control the outlet ports of said casing, a sleeve reciprocally mounted on said shaft, and bearing a valve adapted to control such annular series of ports, resilient means tending to raise said sleeve to open said valve, and a governor borne by said shaft and adapted to depress said sleeve to close said valve. I

5. In an explosive engine, the combination of a pair of cylinders, a divided crank case, a cylindrical casing located intermediately between the cylinders and having ports leading to the divisions of said crank ease respectively, an annular chamber surrounding said casing, said chamber having cxtcrnal fuel connections and being'connected with said casing by an annular series of ports, a second chamber surrounding said casing above said'first chamber, said chamber having similar ports opening into the casing interior and exterior air connections, a shaft extending longitudinally of said 'casing and having geared connection 'with the crank-shaft 0t said engine, a rotatable cylindrical valve borne by said shaft and adapted to control the outlet ports of said casing, a sleeve reciprocably mounted on said shaft and bearing a valve adapted to control the fuel-inlet ports, a spring tending to raise said sleeve to open said valve, and a overnor borne by said shaft and adapted to depress said sleeve to close said valve.

6. -In an explosive engine, the combination of a plurality of cylinders, a divided crank case, a casing located intermediately between said cylinders and having ports leading to the divisions of said crank case respectively, a fuel inlct'for said casing, a shaft connected to be driven from the crankshaft of said engine, a rotatable valve borne bv said shaft and adapted to control said i outlet, ports, governor mechanism operated by said shaft and adapted to control said inlet port, and mechanism for operating the ignition devices of the respective cylinders, likewise ope atoll-by said shaft.

7. In an explosive engine, the combination of a pair of cylinders, a divided crank case, a cylindrical casing located interme diately between the cylinders, said casing having ports at its lower end leading to the divisions of said crank case respectively, and an intermediate fuel inlet port, a shaft extending longitiu'linally of said casing and connected to be driven from the crank-shaft of said engine, a rotatable valve borne by the lower end of said shaft and adapted to control the outlet ports of said casing, governor mechanism 0 )erated by said shaft for controlling said in ct port, and mechanism for operating the ignition devices of the respective e linders borne by the upperend of said sha t.

Signed by me, this 2nd day of September, 1908.

EARL H. SHERBONDY.

Attested by- D. T. DAVIES, Jno. F. 0BERLIN.,

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