US1179698A - Valve mechanism for internal-combustion engines. - Google Patents

Description

, UNITE STATES JOHN' n mrronn? @aanname-man an@ Be it Y known ,"tha'tlyflorrlv G'LiFFoRD,A a `citizen of i the United States,res1d1ng, at

Stockton, ingthe'eollily O San Joaquinandv .ineand 1abor; Y nope'ration hejniain-` oolz" otvvithstandin P 20 the Passage gaseslofthegengine In the aoCoInpanymg-'drayvings, Figure `1I is' a ysider View f of n' *four-cylinder j internal combustion vengine ltowlflieh my` invention is thereof; Eig, 3" Vis* tan enlarged longitudinalI section, ,thereof 'on' the-line 3 3 of Fig,k 4 ;r Fig.' 4 is a transverses'ection thereof onl the linen ,4-4-4 of Fig;- 3; {Fig-f 5; is Y a," side View of 's vthel rotary. valvejdfetaehed; Fig. L6 is lay per'- f spective View of l affeluteh ring', or Y 11111011.

y therefor; .Y n

Referring."` to the drawing, 1 indicates` a crank case ofra four-cylinder internal com- 35-bustion engine in'kwhieh; rotates theshaft 2y of said. engine." Secured npon'said` prank case are theeasin'gs of the. ycjylirldeis of.v said engine formedwithWater-,jackets Formed -f on said casingsare boxes 5 foraA worm'shaft- 40 6, to one enclof whichpisxvslseeurell asproeket wheel c7`'engagingv asprcketf/Ghim. 8, which also 'engages as'progcketgfwheel' Sul'ed upon `the shaft ofthe-engine.' aSaid sprocketI chain eaclrhaving on he ideineiit 'thelcylinder,- af

central .hr Iann-v lar' r U l 55 metigicall'yoppo p tniwmd im outer 011 12 ,formed wiutdiadi'ally v, l lffSlvIrrH, QF svTocKTON, CALIFORNIA?, 'nu e ron'INTEnNAL-CoMBUTIQN EIIGINS I i I y famed@ 18,19

lmsiglrial lol'eiles. i Y

struction,V noiseu y-infth'ebottoniofthe re n tube extending beyond-"the inner tube;

shaft earries Wbrms16- Ltendingunder#A ,PATENT 'OFFICE 5 ineneweu septemtrza, 1,915.v

Y eut `grooves' 21. HSaid)groovesengage feled" feathersl 123 formed onjoneside' clutch Aringy 24,; on. the otller`. s`icle2 h2 ring are formed featherfsl26"atgrightanVv es to the feathers 231andf=whichfengagegroo 27 in anannular endffo'fiy otarygtublar .'lhefrelation of each Worm ,Wheelv 1.7 y the corresponding 'Worm 16l is :such thatf '.tubular vavle`28 makes onerevolution every fourv revolutions of theenginesha Screwed` into the4 end ofthevalve .to `Glo the lsame ils-a'` plug29/havingn itsfouter- -Aheimgonaliiiecessjtg f y't ,drawing th valve ,t0A f clip 32 boltedg as fshovv clip is 'formedwith a flaring mouth to facil' tate the entry'.` of, ther knob `i',hereinto.f-`1y Said valve 28 `is formed Withl an' inner .tubefL-Sel and with Kan outer ltube 35, spaced apartto 'provide van annularl ,conduite 361j the,

end thereof connected to the p'lughbutl "nected integrally with `said inrleituloelV other end'.V At said'latte'r.endisadpoute is'of increased thickness, sol-ias; tol form an annular shoulder 37 'abuttingagain'stia,wall 38 ofan'anruilar` supply' `chamber v'39,- the terminalportion ofthe "valve-isagaiu increasedfthicknes's; so ras to Qfrin a.A -see y k,annular shoulder 40 abuttingqagaint outer Wall 41 ofthe casting.' Thefsfh 37 `of the `rotary [valve servesto prevent passage of gases `loetvveen v,the annular;L supply chamber' 39and"spa1ce between' outer tube 35 audits' bearing'yja'ndv' manner` the shoulder 1310 ypreventsl th -gress; `ofrv'ar or exhaust gase'sfintgfsa nular gas supply charnloery 39.. .By forming thevsho'ulder 40 and theouter Jwalflyfll Vvery thin,` 'a `,cooling effectoflthe gases" :of the annular vgas supply chamberV uponfsaid Wall 'and shoulder is rcured, ytlrlat' l {not obtainedotherwiseJ Betweenws'aidinner louter Walls `318, 4.1, isiformedfltheefann Agas supply hanlber 3:9, extending enti around the outer tube of .-thegifall u ply ehamber 'derivingits supp tible mixture? by Y a l `conduitl43 e recess in said vouter, wall around said conduit 43 fits the end of a hollow fitting 44, with which communicatesr a pipe 45` of the i manifold Fitting in a recess in said walli 5 4l aroundI the open end oi' the tubular valve is the head 46 of a hollow lfitting 47 connected to an exhaust pipe 48. Between the hea'd46 and the wall 41 is interposed a gasket 49 of asbestos which serves also as a heat insulator and the inner side of which is lined with a thin sheet 4 0 of copper. Said ttings are held in place by'means of a bar 5l, through which passes a post 52, the inner end of which is screwed into the cylinder casting, which bar 51 is irmly pressed against the outer sides of said fittings by a wing nut.62 screwed on to said post.

The annular gas supply chamber 39 communicates with the annular conduit 36 between the inner and outer tubes of the valve A by means ofaci-rcular series of rectangular apertures 53 formed 'in said outer tube, and .from said annular conduit 36 the combustible mixture can flow into the cylinder by one of two elongated ports 54 in said outer `tube,`when said port 54, by the rotation ofl the tubular valve, is brought into register with that end of a pail' of conduits 55 in the cylinder casting which leads to the interior of the corresponding cylinder. By the same conduit 55 the exhaust gases can flow out of the cylinder through one of two exhaust conduits 56 leadingto the interior of the inner tube from the outside of the valve, thence iiowing to the interior of the fitting 47, and thence to the exhaust pipe 48, The

elongated ports l54, as likewise the exhaust conduits '56, are arranged diametrically oplv posite to one another and thus prevent the 40 warping of the valve that would be caused by the heating thereof `with exhaust gases were the arrangement otherwise, as,`for instance, if only one port/54 and one conduit 56, were used.

The lports 5'4 and conduits 56, are, of course, formed in the rotary valve in such angular relations, that the valve will move at the proper time to supply vcombustible gases to the cylinders for explosive com bustion, and to permit the escape of the i waste gases resulting from combustion.

- It ,Will be observed that by reason of the innertube being spaced from the conduit 55 byfthe annular conduit for the combustible 55 mixture, the waste gases, passing outward through said inner tube, are preventing @from highly heating the outer wall of the valve and the part of the head .of the cylinder in contact therewith; while, at the same 460l time the flow 0f the combustible mixture around said inner -tube prevents the same from becoming. excessively vheated by said waste gases. f

By reason of the inlet conduit for the C# combustible gases surrounding the exhaust conduit for the combustible gases, said gases are heated by the passage of the exhaust gases, and are thus thoroughly vaporized and brought to a perfect condition for' immediate combustion when supplied to the engine.

An, important advantage of my invention consists in the construction wherebyl the valve tube can be removed bodily, inspected and cleaned, if necessary, and replaced, by the mere unscrewing of .a nut, and the removal of a loose iitting.

When the engine is in operation the back pressure from the exhaust and the suction from the' intake .are sufficient to keep the shoulders of the valve firmly seated against their seats. Means otherwise provided for holding the valve in position are intended' for use only during the othergperiods o f the engine cycle. It is not desirable to vapply pressure to the hot or exhaust end of the 1 valve for this purpose, and for thisreason the draw. clampv 32 is provided at theopposite end of the valve. 4It is to be observed.

that the construction of the loose joint will' be such that, when the valve is in 'the position to be driven home in the valve seat it will also be in the position without further attention on the part of the assembler, to l -register withthe cylinder conduits.

1. In an internal combustion engine, the combination of two parallel internal com bustion cylinders having adjacent heads, and provided with a rotary valve seat, adjaf .Centto their heads, each cylinder being con? nected with said seat by a passage for'thed` admission an-d exhaust of gases," a rotary valve in said seat its plane of rotation .being i parallel with that 'through the, axes of the cylinders, and comprising an inner .tube and an 'outer tube extending beyond the inner i 'tube and separated'therefrom by an annular space, said tubes'being both' closed at the same end, the inner tube being open at the other vend to exhaust, andfmeansat said other end for connecting the .annular space between the tubes with asource of supply of combustible mixturcasaid valve being 1 15 provided with two diametricallyv opposite.A passages'lea'ding to said seat from the inner ltube, and two diametrically opposite pas# sages leading to said seat from ..the'space between the tubes, all the end s of said pas- 4sages adjacentto said seat beinglocated to register in succession, in the rotation of the valve, with the .passage connectingisaid sea-t with-eachcylinder.

.2; In an internal combustion engine, the combination of two parallel internal combustion cylinders having adjacent heads,- and provided nl 'ith va rotary valve seat, adjacent to their heads, each cylinder beingconnect ed with said seat by a passage for the admission and exhaust otqgases, and a rotary valve in' said seat its plane, of rotation being parallel with that. ythrough"the axes. of the cylinders, Yand comprising 'inner and outer tubes, both ,closedat-the .same end and sepayrated 'by an annular space', the inner tube being atthe other ,endIv open to exhaust, the `'Valve seat being vformed at said .other end vwith a'gas supply chamber, and said outer tube .being foi'niedat said other end with a' circumferential f series of 'holes forv conducting fuel gas ioi'n] said supply chamber to said annular spaee, said valve being provided with twofdi'ametrically opposite passages leadingtosaidseat from the inner tube, and tWoI-idianietrically *opposite `passages leading to said seat from the space betweenthe tubes,` all 'the ends of Vsaid'passages adjacent tosaidseat being located to register in succession, the rotation 'ofthe valve,- With the passage f connecting' said .seat with ,each.oylinder.f,n'Y l, 3. in internal combustion i; engine, the combi'iiationfyvith a cylinder having a con-- duit, (it/means fors'upplying a .combustible- Iof the cylin er and .comprising inner-fand lar supplyx', jchamber, thelsame end c= the outer. tubebeing'formed .with a plurality of openings for admitting combustible mixture from the ,annularsupply chamber toi the annular space'. ,'between4 tite,

orxned veith conduits com- "utergflside respectively fthe, i' ner 'tube and yfrom ""the'inner .and

QA, 'Ingan' internal contiblistio'nv engine, the

combination-With ay cylinderr'of'the engine' having a ,"con'diiit" through ,its bead, of means o. ,upp lyinga eoinbustiblemixture to said i engine', `a rotary-tubular ,'alvfe consisting of v inner'fandfoutei tubes, 'the innertube .com-r .said Wheelitofone'end'jof, said Valfi'fe permit-Y ltings'aid valvevto be' readily detached lon` gitudinally therefrord'said valve 'casing and valve hayinggrespeetively shoulder Vto, its :seat 5s combinationwitha cylinder hawing a con- [of was'tegases from-the' cylinder tion. `and means, detachably en end'ofthe valve, for rotating thev 'aL-l and connected with` said seatfbya'fpassage',

l tube forming the wall of .the 'exhaust'eoni `ply chamber around theouter tube ,andcom vided with passages leading to" sai from the inner tube -aidspace mixture, a ry tary valve located in thehead outer tubes;aliyalyefcasin'gsurrounding the ,l having a conduit "through its head valve and formed'at one end .with an annu:

innerfa'nd outer n Y e e e e l y y being formed `withi,conc'luit",s-eoxrnnunica 1n betweenthe inner andbuter tube fr`-ii'otating said i which saidyalverotates andhayi'ng respectively an'annular shoulder,

'tubes c'ommunicatingiwitli. -saidmeans, said h,

for transmitting'gt erotation oi` u e a seat andannular-shoulder, land means -for helding the;

linA anl internal combustionilengine, the 'l .y duit, "and 'inea-nsy sul'ipl'yingy combustible l.

mixture, dof" a rotary"y vls'ilyey k,for the supply off said mixture, and

lcated at the end of ,s`aid.gvalve rena exhaust for maintainingthe valvf valve Abeing detachablefbyf a ljongi uV n inoveinent only yfrom they ineansvqfo y rotat-v ingitf y f '6. lnan internal combustion-engine; combination of ang'internalfcombust n inder provided with afvalve seatfin tsihe'ak,

and a valver'otatable in 'saidlseathlavinglin ner. Vand outer tubes, Vspaced apart, ith'efinner andthe valve seat being fornied withla municating through the outer` tube; Vith4 space between the tubesthevalye being py sea -f In an internal' cinbusltion-jengine, combination with; a cylinders ofv th `for .supplying acombustible mixtur torsaid 1 engine, a rotary tubular.Nal,veveon'sisiinglofv inner and outer i',ube`sthe innertubeycom 9`5 n'uri'cznting.L withth 'atniosphere,f rnd yh space betweenthe Sy eri .fandi youter u communicating withxfrsaid means,sa`d valv ,Wivtl'ji'its outer. side respectivelyffr 1n .teri'or-of-the inner tube and from 'he 1 f'driven from Athe engin'elishdmandiniea transmitting the rotationfofbsal Wheels.

berv with :which said supplyingjfmea space communcatasaidyalve and al 'ing'ha'ving on. `a`ch sidef of,4 and ,cl 3 I jacent to, the 'communication ywith 1 upon which the shouiuepeqnimaig joint, and means' for. holjdxng sai b ders to their seats;

8 I`nfan internaly combustion engine th combination of two parallel'illlk nal n. -bustion-cylinders" hayingjfadjacen and provided' with arotary-valv"` *se cylinder being connected with's a passage for the admissionandexhaust f; gases, a rotary valve; inisaid-sea end; prsingl4 an innerv tubeand y, I utM vSe iaratd by "all annlllifspace; being both closedfat thef'samefen t -tube being open 4at the-,other 'en and,` means at said other Lend for con the annular space betwen thejtubes sourcey'ofl 4suppl-y ofbgcombustb said valvey being provided I Wit metrically'ropposite passages, vladin seat from the inner tube, and two diametri- In testimony whereof I have hereunto set cally opposite passagesleading to said seat my hand in the presence of two subscribing from the space between the tubes, the ends witnesses. j

of each pair of diametrieally opposite pas- JOHN E. CLIFFORD. 5 sages belng located to register alternately, Witnesses:

in the rotation of the valve, with the 'pas- FRANCIS A. -WRIGHT,

sage connecting said seat with each cylinder. D. l B. RICHARDS. l

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