US987164A - Valve mechanism for internal-combustion engines. - Google Patents

Description

A. E. OSBORN.

VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES.

Patented Mar. 21, 1911.

APPLICATION FILED JULY 3, 1909. 987, 1 64:.

3 SHEETSSEEET 1.

' WITNESSES:

INVENTOR A. E. OSBORN. VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLmATion FILED JULY 3, 190a.

' Patented Mar. 21, 1911.

s SHEETS-SHEET 2.

the use 0 puppet valves which, at best, are noisy, un-

UNITED STATES PATENT OFFICE.

ALDEN OSBORN, OF NEW YORK, N. Y.

VALVE MEdHANISM FOR- IiNTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Application filed July 3, 1909.

Patented Mar. 21, 1911. Serial No. 505,860.

To all whom it, may concern:

Be it known that I, ALDEN E; Osnonn, a citizen of the United. States, residing at New York city, in the county and State of New York, have invented a new and useful 1mprovement in Valve Mechanismfor Internal-Combustion Engines, of which the fol lowing is a specification. a

My invention relates .toimprovements in valve mechanism for internal combustion engines and particularly to valve mechanismincluding reciprocating slide valves, and means for positively operating them in either direction.

The valve mechanism commonly employed in connection with four-cycle internal combustion en ines of the present day involves cam opened and spring closed reliable and unsatisfactory in almost every respect. I am aware that attempts have been made to use reciprocating slide valves inoonnection with th s type of engine, but so far as I am at=present aware, none of these attempts has been'successful, and it is the main objectof my present invention to provide efficient valve mechanism of this character. I I

' To th s end, my invention consists in many noveldetails of construction and combina tio'ns of'parts, such as will be fully pointed out hereinafter, and in ordenthat my invention may be thoroughly understood, I will now proceed to descrlbefcertain embodiments thereof, having reference to the accompanying drawings illustrating the same, and .will thenpointF-out the novel features in claims.

In the drawings: Figure l is a view in partial sectional elevation through a valve mechanismconstructed in accordance with my invention, showing-the same applied to an internal combustion engine. Big. 2 is a detail sectional view. upon a somewhat larger scale showing the valves in different positween the valve. operating valvesjoperated thereby. fi 'iver'ticalrtransverse sectional. view of an 1ntions than those in which they are shown in Fig. 1. Fig. .3 is V a. diagrammatic view showing/the relationship of movement beshaft, and the ig. 4 is a central ternal combustion engine provided with a modified form of. valve mechanism constructed iii accordance with my invention.

Referringfirst of. allrbo F igls. 1 and 2, the engine therein shown is t e ordinary open communication with the engine cylinder by meansof a passage 27. This valve casing comprises a cylindrical bore 1]. and a tubular member 12, the inner and outer walls of which are cylindrical and are concentric with the cylindrical bore 11. A. tubular valve 13 is disposed between the cylindrical bore 11 and the outer walls of the tubular member 12, the same bein Y arranged to act as a distributing valve as will prosently be explained, while a piston valve 1-1 is disposed within the cylindrical bore of the tubular member 12, thesame being hereinafter termed the main valve of the engine. The tubular member 12 is provided with one or more transverse passages 15 there- .through, the same bein controlled upon one side by the main valve 14 and upon the other side by the distributing valve 13, and the distributing valve is provided with two sets of cross-over ports or passages 16 and 17 which are adapted to alternately connect the said distributing passage 15 with inlet and exhaust chambers 18 and 19 with which the valve casing 10 is provided. valve 14 is provided with a valve rod 20 the end of which is secured to'a,cross-head- 21, and the valve operating shaft 8 isprovided with an eccentric 22 having an eocentric strap 23 and connecting rod, the end. of which is pivotally connectedjat 24 with the said cross-head. By this means, the rotary movements of the shaft 8 -8.l8-Il;l lI1S- mitted in the form of'reciprocating move; ments of the valve 14, and because of the fact that the axis of rotation of'tho shaft 8 is disposed eccentric witlhrespect to the a The main path of movement of the axis 2-lyitivill follow that the angular mpvement,'v (if'thc shaft will be greater when moving the valve in one direction than when moving-the valve inthe other direction.

ios.

This wlll readilyj v befunderstood by reference 'tothe'zdiagram'- matip' view in Fig. 3, in whicl'u it ivilll he seen,"I.

ilin yafline passing through the centers of 1 gthtee'parts '24, Sand 22when the valve is'initsuppermost positiomwill he oblique too, similar line passing through the parts when the valve is in its lowermost position. The velvexncves from its uppermost to its lowermost position while the shaft moves through an angular position from one end ofthese lines to the other, and in the arrange: ment of the parts, it will be seen that the valve will move slowe'nwhen moving downwerd'then it will when being moved upward, for the movement in the forme'rdirection will be during thetime the shaft moves through the greater are and hence through more than one-half of a complete movement of rotation of the said shaft. -The distributing valve 13 is arranged to bemoved by the main valve near. the end of its movement in provided at its lower end with n flange which is adapted to be engaged by the main valve when near the lower end of its downward inovementondhy a collarQG carried b theivelve 20 when near the 11 per end of its movement. The movement 0 the distributing velvc' is quite small, only such as is' necesssry to mo'vethe ports or passages l8 and 17into'o3nnnun1cst1on with so the distributingpitssage15,the two extremi- When the parts are in the position shown in J 5 ing stroke t ties of its movement being shown in Figs.

1' and 2, and these-movements are required to take place at subi-jttlntis lly the end of the reciprocating movements of. the main valve,

which it is shown in'Fig-filto the position in which it is shown in 13553 at the extremity of its down-Ward movement, and to return the distributing valve to the position in which it is shown inFig. 1 at substantially the extremity of its upper movement. The friction of the packing rings between the distributing valve, the inner cylindrical'hore 11 and the outer. Wall of the leakage, will be suiiicient to hold the distributing valve against accidental movement intermediate t mes.

The operation of the parts is as follows:

Fig. 1, the enginepisinn is at the top of the cylinder and the cylinder contains a charge of compressethgases; Assuming. that fthe tit either direct-ion. The distributing valveis hence the main valve is designed to move the distributing valve from "the POSIHOIX/ in tubular member 12 employed to prevent d the valve operating; irestion, to the extent lvence of the main valve 14 will be moved practically onehalf its stroke and it will have commenced to uncoverthe passage 15, thereby aifording communication through the valvecasing between the engine cylinder and the exhaust chamber 19. This passage-is fully u.nc0veredhy the time the engine piston has just As the en-1" gine piston continues to ascend on the exhaust stroke, the. main valve 14-. will concommenced its' return stroke.

tinue to descend and after the engine piston has reached its uppermost position and just commenced to movedownward again, ,a pointin the stroke of the valve 14 is r a hedwherein the flange 25 is engaged by the mainvalve, and inthe remainder of the [downward movement of the valve, the distributing valve 13 is moved therewith so that the parts will finally-reach the positionshown in Fig. 2. Thecflfectof the latter movement is to close communication between the exhaust chamber 19 and-thedistributing passage '15- and to open communication betweeuthe "said passage,- 15 and the inlet chamber 18,,iithe inlet chamber being in full comn'iunicntion with the'passage 1 5 when the engine pistonhas moved downward about one-quarter of-its suction sti-oke. As the piston continues to move downward, the

main valve will commence to move, upward and its speed will now commence'to accelerate [I by means of the eccentricposition of the she-it e as above described; About thetiine the suction stroke of the piston has been completed and the piston has commenced its return stroke, the main valve will again cover the distributing passage 15 so as to close the same so that upon the continued compression movement of the. piston, the

cylinder will be entirely closed. As the englne piston completes its upward movement to compress the charge, the main valve will continue and complete its upward move-. ment, and near the end thereof-it will, by

reason of the engagement of the collar 26 on the valve rod 20 with the flange 25 of the distributing valve13, carry'the distributing valve up with it in the position in which it a is shownin Fig.1, whereby to discmincct the inlet charnberfroni' the distributing passage, and again connect the exhaust charm her therewithso that when the main valve next uncovers thedist 'utingv passage 15 vit will opeii "tlielicylin'd'er to exhaust." gThe foregoing completes the cycle of operation the parts are now back in the" position in which they are shown in Fig. 1 ready for a new. cycle to. hecqmmenced; I 1; i

In the modified form of my invention shown in Fig. 4, the main valve is in the form of and 15 t. 'lhe nid tubular shell 30 which surrounds, Jfiji'lil'lfi with, the mam piston 31 mew valve 13 connected by means erni with e cross head 33, the. being the equivalent of the cross hea'd' 1 3 positiom-inlwhichposition they connect the 21 of the structure shown in the other figures, the saidcross-head being connected to,and operated by, an ecce tric 22 upon the L'valve o' is provided withslots 34near the upper end. thereof which are engaged proper time with openings ting shaft 8. T e said valve 30 to register at the 35 in the cylinder 36 which surrounds the valve '30 and piston w the structure in the other 31, thesaid openings constituting a distribut' ing passage equivalent to figures.

This passage may be connected with either the inlet 'or exhaust chambers 18, 19 by a suitable "valve mechanism such as that shown in,

Fig. 1. Because ofthe fact, however, that ,a valve for this ,pur ose' constructed like that shown in the ot er figures, would be of very large size, I-preferably provide one or more distributing valves 37 disposed'eccentric with respecttoithe vsaid main valve 30. Each of the, valvesfi? shown in Fig. 4

comprisestwoiheads adapted in their move- 'ments;tofconnectcithenthe inlet chamber 18 withthe saidjdistributing passage 35, or the exhaust ;chamber;. 19 therewith. The valves are provided; with stems 38 having collars the. said-.niain valve 30. The

.va'lves3 sage Initllie'i will connect; the. n

; e toqdfbyia msne construction offthislkind not' only ermits a H also. distributes t ement with by, and with, distributing are; shown as .in their? uppermost 39., 4,0,- .ther nn or, c enga flanges 41' .u on tubes 42 carrle exhaust chamberjwith the distributing pasrm'ost:v position they chamber with the said be readily und s ri iiigspas v ticnlo t dfrawin he.u cfv ry ifili .distr but ng va. ves but .tage, preservesa more even. distribution of heat, and. serves .to-afi'ord a more direct passage forthe gases. The'operation of anenjgine of this construction willbe-similar to that of thelengine shown,- in the. other figures,

I ter, may be ci valves. 30 nd and further.detaileddescription thereof will be unnecessary, herein.

In the constructionislio wn; in Fig. 4 the f 37 iandadjacent parts are shown as surround'e'd .by. a" suitable jacket ,within which ac l'ngmedium, such as waedfforthe urpose of keepingv down th temperature 0F Other coolingjmean'smay,

having inlet. and exhaust c .pa'ssages, and it -will, of course,- be. under stood that the valve-mechanism above, de-

scribed may bappl edto a laitg variety of different formsand constructions of interna .near each "end of. its movement "for connectcombustion engine.

What I claim is; v 1. A valve mechanism com rlsmg a casing liambe'rs and a -cnd of the said the passage 15 in e, gases to, better advan e Pa of course, be.em'-' ployed, such as the radiating fins-in; the form of engine shown in/Figs, 1; and 2' the gases constituting a fresh charge also tendingtoi distributing passage, a valve located at one passage for controlling the same, and means located at the other end of the said passage, and operated by the movement of the said valve, for connecting the said passage with either the said inlet or the said exhaust chamber.

2, A valve mechanism comprising a casing having inlet and exhaust chambers and a a distributing passage, a valve located at one 7 end of the said passage for controlling the same, and a sccond valvc'located at the other end of the saidpassage, and operated by the movement of the first said valvc, for connecting the said passage with either the said inlet or the said exhaust chamber. 3. A valve mechanism comprising a casing having inlet and exhaust chambers and a distributing passage, at reciprocating valve located at one endof'the; said: passage for controlling the same, a id-=mean's-located .at the other end. oftheisaid -passage, and o erated by the'movemento thcysaid va1vc, or connecting the saidypassageiwitlt either'the said inlet or the s'ai exhaustchamber.

4. A valvefinechaniism comprising a casing having inlet a cl exhaust chambers and a distributing; passaga a reciprocating valve located at on'eend of thesaidpassage for controlling the same; and asecond reciprocating valve locatedi'atvthe other end of the saidipassa'ge,andoperatedkby the'movement of the first said valve,"for'co1mectin the said passagewith either the said inl et or the said exhaust chamber.

5. A valve mecha nisnrcomprising a casing having inlet;and exhausticliambers and a distributing passage, a; reciprocating slide .valve. located at one end of the said passage for controllingithe same, and means located at the other endjof the'said' assage, and operated by the" movement 0 j the said valve for connecting the" said passage with either the said inlet or the saidexhaust chamber.

6. valve mechanisni' comprising a casing. having slet and 'exhaust chambers and a distributing passage, a reciprocating slide valve 1 located at one end ofthe said passage for controlling the same; and a second reciprocating. slide 'val've locatedhttlie other end of the saidpassa'ge, andoperated-byv the movement; ofthe first saidf valvefor connecting the said-passage with'"either the said inlet .or the said'exhaust'chamber. v

7-. A-va ve; mechanism comprising a cas- 0 ingi having inlet Y and exhaust chambers and i d s-Cr b? s1 P age t t ei wated at one end ofthel sairl' passa'ge forgcontrolling the same, and ineans operated' by the move ment of the said valve 'whenthe Valve is ing the other end of*thesaid:- passage. with either the said" inlet or the? said exhaust chamber. I

8. A valve mechanism comprising a casz-the first saidvalve when it is near each end a connecting the other end of the said passage t ing one end ofthe-saidfpassage for controlling the same, and -'a secondyalve operated by .5 the'movement QfthefirKSaid valve when it is near each end of its'rnbyement for cona,

nectingthe other end of the said'passage with: either the said inletor "the said eiihaust chamber. 1o

'ing having inlet anthexhaiust chambers and a -distri buting passage, a reciprocating 9. A valve mechanism comprising a casvalve located at one end of the said passage ated by the 'movementof the said valve, When the valve is near each end [of its reciprocating movement, for connecting the other end of the said passage .with' either 10.- A valve mechanism comprising a cas- 11 ing having inletand exhaust chambers and I a distributing passage, a reciprocating valve M located at one end of the said passage for controlling the same, and a second recipro-.

eating valve; operated by the'movement of ofit's 'reci rocating movement, for connect- .ing the other end of the said passage with .eitlier the said"inlet or the said 'e xhaust chamber.

* 11. A valve mechanism comprising a casing having inlet and exhaustchambers and a distributing passage, a reciprocating valve located at one end of'the said passage for controlling .the same,-a second valve for v with either the said inlet or'the said exhaust 'chamber, and meanswhereby thelattisaid valve is movedby the first said valve near 40. one end of its movement to connect/the said passage with the inlet chamber, and near the other "end: of its movement to connect the said passage with the exhaust chamber.

412; A valvemechanism comprising :1 casing havinginlet and exhaust chambers, and 1.;including a cylindrical. element provided with a'gdistributing passage -therethrough, a

.Jpistonvalve within the cylindrical element and controlling the "inner end of the said w surrounding the said -cylindrical clement, narranged'to connect the outer end-of thedistr-ibuting passage as either the land inlet,

distributing passage,fand :a tubular valve r the said exhaust chamber.- f

3. valve mechanism comprisi including 1 a cylindrical element provided I with a distributing passage therethrough,

a piston valve within" the cylindricalelement and controlling the inner end of the saiddistrib'uting passagdand a longitudi :2 .nallymeciprocating tubular valve surroundthe cylindrical; element, arranged in one osition to connect the onterendof fon'controlling the same, and means operthe said inlet or the said exhaust chain'berJ no v H. g, having lnletand exhaust chambers,- and inlet chamber, and in another position to connect the outer end of the said distributingpassageflvith the said exhaust chamber.

"MQAT valve mechanism comprising a casin'g having'inlet and exhaust chambers and including- 1a, cylindrical element provlded with a distributing passage therethrough, a pistoiivalvje within the cylindrical element andcontrolling the inner end of the saiddistributing passage, and a tubular valve surrounding the said cylindrical element, arrangedto connect the outer end 'of'the di tributing' passage with either'the said inlet or'fthe said exhaust chamber, the said; tubular valvefbeing pe'rated' by the movement 81? of the'first said valve.

15. A valve mechanism comprising a casing having inlet and exhaust chambers, and including a cylindrical elementv provided with a distributing passage therethrough, api'ston' valve within the cylindrical ele- 'ment and controlling the-inner end of the said distributing passage, and a reciprocat ing tubular valve surrounding the said cylindrical-clement, arranged to connect the outer endof the distributing passage with ,either' the said inlet or the said exhaust chamber, the said tubular valve being longitudinally reciprocated by the movement of the first said valve. v 16. A valve mechanism com rising a casing having inlet and exhaust c ambers, and including a cylindrical "element provided with a distributing passage therethrougln a piston valve Within the cylindrical-ele- -ment and controlling the innerendof the said "distributing passage, and a tubular valve surrounding the said cylindrical elc- 'ment arranged to connect the outer end of the'filistributing .passage; with either the 105 said inlet or the said exhaust chamber, the said tubular valve being connected in operative relation with the first said valve near I the limit of its movementin either directionI -j .17. The combination with a working cyl- 1 inder and a casing containing a valve chamber, an inlet .chamber, an exhaust chamber, .a'idistributing' passage, and a pas sageleading ,from thainterior of the valve chamber to the working cylinder, of a valve 11 located viithin the said valvelcasing ior controllingfcommunication between the latter said. 'as'sageand the innerand Of the said dist-rt utin'gpassa eg andanotherg-valve concentric-with the rst said; valvef-iand sur- 12 rounding'the same, for controlling the opposite end oithe said distributing assage and for conneetin it with either t c said inlet .or the said ex iaust chamber l8. Thelcombination with a working cyiinder 'and-a' casing eontainingwa valve chamber, an inlet chamber, any; exhaust chamber, a distributing passage, and a pa sage leading i orfi tfieiiitei'icfpffthe v'alve hambe rankin y tflexteiwa ve W located within the said valve casing for controlling communication between the latter said {passage and the inner end of the said distributing passage, and another valve concentricwith the first said valve and surrounding the same, for controlling the opposite end of the said distributing passage and for connecting it with either the said inlet or the said exhaust chamber, the latter 10 said valve being operated by the movement of the first said valve.

19. The combination with a working cylindex! andfa casing containing a valve chamber, inletchamber, an exhaust chamber,

a distributing passage, and a passage lead- 7 ing from the interior of the valve chamber to the working cylinder, of a reciprocating valve located within the said valve casing for controlling communication between the latter said passage and the inner end of the said distributing passage, and another reciprocating valve concentric with the first said valve and surrounding the same, for controlling the opposite end of the said distributing passage and for connecting it with either the said inlet or the said exhaust chamber. v 1

, 20. The combination with a working cyl- .'inder and a-valve casing having a cylindriito-cal element containing a distributing passage through the walls thereof, the interior of the said cylindrical casing element be ing in communication with the said working cylinder, and the said casing having inlet and'exhaust chambers, of a piston valve mounted in'the said cylindrical casing element, for controllingthe inner end of the said distributing passage, and closing it from communication with the said workin 40 cylinder a. tubular valve surrounding the sai cylindrical casing element, and arranged in one position to'connectthe said distributing d passage withthe said exhaust'chamber, and means for movin'g the said tubular valve, by the reciprocation of the said piston valve,

to such position.

21. v The combination. with a. working. cyl inder and a valve casing having a cylindrical element containing adistributing passage through, the walls thereof, the interior of the said cylindrical casing element being in; communicationwith the said, working cylinder, and the said casing having inlet and exhaust chambers, of a piston valve monntedin the said'cylindrical casing element, for controlling the inner end of the Said distributing passage, and closing it from communication with tbesaid worki cylinder, a tubular valve surrounding the 80 said cylindrical casing element, and arranged in oneposltlon to connect the said distributing passage with the said inlet" chamber, and means for moving the said tubular valve, by the reciprocation of the 6'5 said piston valve to such position.

slide valve, of operatin one direction than in the other. I

23. T bev combination with a valve and a reciprocating element connected thereto, of

operating means therefor comprisin a rotating shaft, an eccentric thereon, an means connectingthe eccentric with the said reciprocating element, the axis of the said aft being so located with respect-to the said reciprocating element, that the said shaft will have a greater angular .movement when moving the said element iaone 86 direction than when moving it inthe other. 24. The combination with a reciprocating slide valve, of operating means therefor comprising a rotating shaft, an eccentric thereon, and means connecting the eccentric v'90 with the valve, the axis of'the said shaft being so located with respect'to the parts reciprocated by the said'eccentric as to cause the reciprocating element to move faster in one direction than in the other, 1 25. The combination with a reciprocating slide valve, of operatin means therefor comprising a rotating s aft, an eccentric thereon, and means connecting the eccentric with the valve, the axis of the said shaft being so located with respect to the parts reciprocated by the said eccentric, that'the said shaft will have a greater angular movement. when moving the said elementin one direction than when moving itin the other.

26. The combination with a valve and a reciprocating element connected thereto,of operating means therefor comprising a rotating shaft, an eccentric thereon, and a connecting element mounted 'uponthe eccentric, and pivotallyiao;

A ted to the-saido' reci rocating element, the the shalt being disposed eccentric to e of movement 0 the axis of such pivots connection, whereby the angular movement n5 of the shaft to move the valve in one direction will be eat-er than the angular movement thereo to move the valve in the other direction.

2?. Tlfe combination with a'reciprocating means therefor comprising a-rotating s aft, an. eccentric upon the shaft, and a connecting element .mounted upon the eccentric-and ivotally connected to a part movable with t e Valve, 126

the axis of the shaft being disposed eccentric to thelinc of movement of the axis of such pivotal connection, whereby the angular movement of the shaft to move the valve in one direction will be greater than the angu- 130 the otherdirection.

1 having inlet and exhaust chambers and a i the movement of the said valve for con-' I said vvalve, operating means. torthesaid located with respect to the said reciprocatthe valve, the axis of the said shaft being .said shaft beingdisposed eccentric to the line ofunovementofthe'axas of such p1v-;

shaft,and a connecting elementmounted upon 1 centric thereon, and means connectingv the "havi distri u for control mg the said passage, an means distributing passage, :1 reciprocatin valve ,thesaidinlet or the said exhaust chamber,

on, and a connecting element mounted upon lar moveincnt thereof to move the valve in 28. The'combination wit-ha valve casing.

distributing passage, a valve for controlling the said passage, and means operated by necting the said passage with either the said inlet or the said exhaust'chamber, of a reciprocating element connected to the valve comprising a rotating shaft, an ece ric' with the said rgciprocatingelcment the axis of the 'saidfsha-ft being'so ing element, as to cause'the said recipiocab ing element to move faster in "one direction than in the other.

29, The combination'with a valve casing inlet and exhaust chambers and a passage, a reciprocatin valve operated by movementof the said valve for connecting the said 'assage with either the said inlet or the sari exhaust chamber, of operating means for the said valve comprism a rotating shaft, an eccentric there on, an means connecting the eccentric with so located with respect to the parts reciprocated by the said eccentric as to causethe reciprocating element to move fas'ter in one direction than in the other.

p 30. Thecombination with a valve casing having, inlet-and exhaust chambers and a' for contrpllingthe said passage, an nieans operatedby the movement of, the "said .valve for connecting the said passage with either of operating means for the said valve comprlslng a. rotating shaft, an eccentric therethe'eccentric, and pivotally connected to the said reciprocating element, the axis of the otal connection, whereby the a'hgular move ment of the shaf to move the valvein one direction will be greater than the angular other dir tion,

31.:rflhe4combinationwith a valve casing gav ing inlet and exhaust chambers and a istributihg passage, areciprocating valve" for controllinglthe said passage, and means operated b8 the movement of the said valve for connecting'the said passage with'either the said inlet or the said exhaust chamber, of operating means for the said valveconn prising a rotating shaft, an'eccentric upon the movement thereof to more the valve in the a: a ko means whereby when'the said pin on" has opened the said distributing pass "e the eccentric and pivotally, connected to a part movable with the valve, the axis of of the shaft to move the valve inonedirecf' tionfwill be greater than the angular movedirection;

32.. The comblnatlon with a valve casing I mentthereof to move the valve in the other having a passage therein, and a' movable.

valve ton-controlling the said passage,-of 76 a rotary shaft, a reciprocatin member be-1 yond the said shaft, the sai shaft being,

substantially between the said member and- 'i the said valve, means connectmgthe said on sa member with the said valve, an eccentric said shaft, and means for connecting the said eccentric with the said :membein a 33. The combination of a' main eylinde "a second. cylinder, a passage connectingthe said cylinders, a

piston in the said second #35 cylinder, a passage throughthe wall oftiie said second cylinder, a movable sleevesub; rounding the .said second cylinder, and

means for giving the said piston airecipros eating motion to open or close said passage,

the said means also serving to movethe said;

sleeve,

34- The combination in-an intctnal eom-y bustion engingof main cylinder contains mg the, engine p ston, a second cylinder as having .a connecting passe to the said main. cylinder, e-pzston m to e said second cylinder, a distributing passe e through the wail of the saidfsecond cylin' er, a movable sleeve surrounding the said second cylinder" 1 b an intake chamber suriminding the said sleeve. an exhaust chamberv also surround mg the said sleeve, passages through th'e' said sleeve whereby when the' 'said metals the intake" chamber and when. in 'aniithe'r positionthe said distribntingpnssageis put? into communication with the exhaust chem; ber. means for moving the and. means whereby when the said piston has shutoff communication between the main engine cylinder and the said; distributing passage. thesaidsleeve s moved to the poslticr" in which the said distrihnting passage cent j mun-zcates wlth the exhaust, chamber, "adv to .open comman moved into, one position the said distribut mg. passage is put into commnnrfcationiwith' said valveepiston, 11:6

distributing passage its:

passage, and a val-veto! controlling the said passage, of a means for operating said valve, to open or close thesaid passage, the said means comprising, in part a reci r'ocating m'embergja connecting rod pivotet on said member, and an eccentric rotating in said names rod and rotating about anaxis at one side of the line of reciprocation of said member, and means for throwing said passage into communication with the intake or exhaust chambers, the said means being operated by the reciprocation of said member.

86. In an internal combustion engine combination of a cylinder, said cylinder,

the

a second cylinderconstituting a valve casing parallel with the first mentioned'cylinder, a passage connecting these two cylinders, a'piston-valve in the said second cylinder, a passage inthe wall of said second cylinder, a crank-shaft, a casing supporting the said crank-shaft and inclosing one end of both of the said cylinders, and means within the said casing to operate the piston in the saidsecond cylinder to open thesaid passage therein during substanevery other revolution of said crank- 37. In valve mechanism the combination with a' valve casing'comprising two concentric cylinders, the inner cylinder-"having a distributing passage through the well thereof, and the, outer cylinder having inlet and discharge passages therethrough, of a piston valve inthe inner cylinder, and asleeve mounted between the cylinders, for connecting either the inlet or the discharge passage with the distributing passage, the said sleeve being operated by the movement of the said piston valve.

, 38. In valve mechanism the combination with a valve casing comprising two concentric cylinders, the inner cylinder having a distributing passage through the wall there of,=:-an dthe outer cylinder having inlet and discharge passages therethrough, of a piston valve in the inner cylinder, and a sleeve mounted between. the cylinders, for -connecting either the lionlet or the discharge passage with the distri uting passage, the said sleeve being operated by the said piston valve near the limit of its movement.

39. In valve mechanism the combination with a valve casing comprising two concen;

,tipic cylinders, the inner cylinder having a f 'giistributing passage through the wall there *of, and the outer cylinder havinginlet and discharge passages therethrough, of a piston valve in the inner cylinder, a sleeve mounted between the cylinders, for connecting either the inlet or the discharge passage with the a piston in the distributing passage,

a rotating shaft, an eccentric thereon, and means connecting the eccentric with the piston valve, the rotating shaft being so disposed with relation to the 1 parts reciprocated by the eccentric filt'lb it will have a greater angular movement when moving the valve inv one direction than-when moving it in the other. I

l0. Invalve mechanism th e combination with a valve casing comprising two concentric cylinders,-the inner cylinder having a distributing passage through the wall thereof, and the outer cylinder having inlet and discharge passages theret-hrough, of a piston valve in the inner cylinder, a sleeve mounted between the cylinders for connecting either the inlet or the discharge passag fwith the distributing passage, an eccentric-thereon, and means connecting the eccentric with the piston valve, therotating shaft being so disposed with relation to the parts reciprocated by the eccentric that it will have a greater angular movement when moving the valve in one direction than when moving it in the other, thesaid sleeve being operated by the movement of the said piston valve.

41. In valve mechanismthe combination with a valve casing comprising two concentric cylinders, the inner cylinder having a distributing passage through the wall thereof, and the outer cylinder haiving inletand discharge passages therethrou valve in the inner cylinder, a s eeve mounted betwcen'the cylinders, torconnecting either the inlet or the discharge passage with the.

distributing passage, a rotating shaft, an eccentric thereon, and means connecting the eccentric with the piston valve, the rotating shaft being so disposed with relation to the parts reciprocated by the eccentric that it will have a greater angular movement when moving the valve in one direction than when moving it in the other, the said sleeve being operated by the said piston valve near the limit of its movement in either direction.

a rotating shaft,

h, of a piston In testimony whereof, I have signed my name to this specification-in the presence of two subscribing witnesses, this first day of July, 1909.

' ALDEN E. OSBORN.

Witnesses: JOHN H GRATAoim,

Annm on E. Osnomv.

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