US908656A - Rotary valve. - Google Patents

Description

L. A. PRAYER & C. 0. HOWARD.

ROTARY VALVE,

AYPLIOATION FILED SEPT.12, 1907.

Patented Jan. 5, 1909.

Lee A,

aha/Pies 0Q How/am;

WITNESSES:

Uli'llTlllD @TATEES PdTPENT (illigid.

LEE A. PRAYER- AND CHARLES O. HOWARD, OF COLUMBUS, OHIO, ASSIGNORS TO MOSES W. KOUNS, OF COLUMBUS, OHIO.

RO'lARY VALVE.

no. eosese.

To all whom it max concern: Be it known that we, LEE A. FRAYER end CHARLES O. HOWARD, citizens'of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in R0- tary Valves, of which the following is a specificetion.

Our invention relates to improvements in a rotary valve, especially in the means of mounting the some and in the provision for the intake of the fuel, and for the exhaust of the burned gases, the said, valve, in one point of its rotation, also providing the head against which the explosion takes place. In other words our valve performs the four functions requisite in s as engine, namely, it admits the charge, ho ds the same during compression, holds the charge during the explosion, and permits the exhaust of the J urned gases; further our improved valve isso mounted that its weight is not borne by the valve chamber Wells, nor is it in contact therewith, but it is carried in bearings edjacent the ends of the valve body.

lnthe accompanying drawings which are hereto attached and hereby made a part of the specification, Figure 1 indicates a verti eel transverse view through an upright gas engine with the -valve in place Fig. 2 is a view similar to Fig. 1, with the valve in e dilierent point in its revolution; Fig. 3 is a side view of the valve showing the opening therethrough; Fig. 4 is longitudinal transverse sect on through the valve showing incuns oi mounting the some.

Referring to. the drawings, 1 is on engine casing, having, os'itioned therein in a suitable manner t e cylinder 2, having operetively located therein the piston 3; the fuel inlet is shown st 4, while the passage for the exhaust is shown at 5. The piston rod-rcpresented by the line 6, pivotslly secured to the piston over the pin 7. We have repre sented the movement of the crank diagrammatically in Figs. 1 and 2, and when the piston is in the position indicated in Fig. 1, the lower end of the iston rod connected with the crank she-ft- Wlll be at the inner point of travel, as at 7*. In this position of the parts, it will seem that the valve 11 is so positioned in its seat that both the inlet and exhaust poserns are closed, the upper end of the opening 23 throng the valve being positioned opposite the di F ld'lng well 2 between Specification of Letters Patent.

Application filed September 12, 1907. Serial No. 392,5'23

Patented Jan. 5, 1909.

the intake and exhaust passages. Assume that the movement of the crank shaft in Fig. 1 is in the directionindiceted by the arrow, and when the piston has returned to the osition 8, the lower end of the iston rod Wil occupy the osition designetec as 8, while the pieton we been traversing this distance, the valve 11 has been rotated in the some direction by means of the sprocket wheel 17 end the sprocket chain 18, to occupy the position shown in dotted line in Fig. 1, in which posi tion there is neither admission of fuel nor exhaust. In reuchlng'tlns position, the valve '0 eniru 23 has, communicated with the inlet passage 4, thereby admitting a. charge into the heed of the cylinder; and in the position of the 1pertsthus shown the ch urge is confined in'th e ead'oi the cylinder or explosion chamber designated ch26, awaiting compression. Referring to Fig 2, it is seen that the pistonhas moved upwardly from the position indicated by the numeral 8 to the position inassisted by the inward movement of the piston. The rotation of the valve continues,

and the position shown in Fig, 1 is repro-' duoed, although it is seen that the valve has completed only one-holf revolution.

The travel of the valve through tl'ic next hali-revolution would bring about the some conditions as hereinbelore described, namely, the admission of the charge, the compression of the same, the firing of the some, undthe exhaust of theburned geses, all. of these opera;- tions tekingjplecc twice in each revolution of the valve.

The valve is substantially cylindrical and is mounted in its chamber concentricelly therewith in the manner shown. in 4:, the ball bearings 15 and 16 being looeted in the races adjacent the opposite ends of the valve, end the valve being reduced in the regions 14 and 14 to be journslee the said bearings.

dicated by the numeral 9, the charge under going compression.

:12, and consequently the letter are notworntherebye Not only erethe valve chamber Therefore, the valve; in this constrhction, is not in contact with the valve chamber wells wells not worn, but the rotation 05 the valve is much more eesil accomplished by mounting the same in t e bearings. To prevent the 'cscepe of the gas longitudinally of the surfece of the valve, which, as stated, is at no point in bearing contact with the valve chamber wells, we provide the packing rings '19, 20, 21 snd'ZZ, nrran ,ed at each side of the opening 25 three :h S315 valve; these pecking rings are prefera-h y'split and. as the valve ro tetes, they are capable of some ex onsiom; and there being preferably a plum 1; pro- -ments are t erefore valve chsmberwells, said valve heme vided at each side of the opening 23, t 1e gas will have no opportunity oi escaping 111 e longitudinal direction.

lnesmuc '1 as the VitiVGlS mounted 1n the hearings adjacent its ends and is not at any point in contact with they-veils of the valve chamber in WlllCil it operetes, it is'necessary to provide e sealing means between the 011'- cumfcrence of said valve and the conveve face of the valve chamber; this is nrefershl sccomplishod by admitting oil through 011 tube 2?, vhich inserted through the CEtSiH" 1 enrl the valve chamber wall, so that oi flowing; through said tube-l in a quantity which may be regulated in any convcneint nisnner, will enter the circumferential space between said valve chamber Walls and said vebxe. The oil will distribute itself elon the length of the valve during the rotstion til the letter, and on account of the capillary ettmction, will form a; film between the said surfaces, which. will act as a seal to prevent the gas in the explosion chamber from flowing outwardlycircunifcrentielly of said valve. The clesrsnce given to the valve mounted in our improved manner will be approximately tWc-thousenrlths (.002) of an inch, a, clear ence large enough to permit the escape of lran epprccieble quantity of gas, and yet small enough to he effectually sealed by introduction of oil through the tube 27 es above de scribed, It is distinctly understood that the oil admitted as stated 1s not for the purpose of providing a bearing, for the reason that it is one of the ohjects'of our irnprovement'tov maintain the valve out of contact with the valve chamber wells, the only bearings being adjacent the endsof the valve. Further, to prevent the escape of the gos except throu h the valve opening 23, We provide a longitu inel pecking strip at eechside' Of-sa icl opening; 23, oesigimted 1n the drawings at 2 29, 30 31 these stri s are lot into shallow chain:

- neis on the face 01 the valve, enclere pressed outwardly hy the springs shown 32 and 33, the letter being preferably coil springs inserted-through suitnbleholes bored in the valve at the sides of the opening 23. "The having it (liemetricel passages bein so 'eriengeil reletive i iongitudinel necking strips being thus spring soeicso pressed; will constentiy rosint n i teem-iwith the inner face of the velvechemher and sagewey theretlnongh adopted on in each half revolution to orient e c the ex losionchernhonsnd. at another in cool helf'revolotion to permit ti cherge of the burned gases the ethrongln 3 means for driving said vslver .2. In an explosive engine a, BO""3F o y journalerl' in beerings erijecent its whereby said valve is meinteinerl out of tact with the valve chamber wel s; said ve having a passageway therethrco gh, pecking rings mounted on said valve at each side 05 7 said. pesss-gewe seici valve in esch half-row olution there-oi admitting the charger-pro takes )lcee; eno ofiorriing QgZPSS EGI-ti E'B burner gases. q 3. In an explosive engine. rotary valve 1 'therewe through and jOUZ'HfilQl erljecent its is. hearings whereby said vs? entrained out of contact with the volt c pecking Inclined on cent seid pessegewey; n ce-n5 actuating said valve to the ing each half revointioii to e charge, to provide e heed m1- com; pression and explosion may take piece, one to permit the escspe 0;". thehurneri geses. no

s tmnsverse pesssgewey thercthrongh, seii l valve char-me bored to mhmt e coolm fiu1d',heenngsgior said valve ad acent its on s whereby thelseid V 11 valve is iiiaints-ined out of contest the-11s valve chamber Wells,paolrihg rin e mljecsnt said pssssgewey, and mechsnicerrneei for actuating said valve, the inlet and e rh passageway t not at esch helf revolution. 12a seici. valve,- the charge is edmittee:l, com pressed and fired, antitheburned gases per; mitted to'esce-pe- ,f 1

5. n an explosive engine it cylindrical F tar valve coma-led oeeringsedieoent y en 5' where y said valve is maintained out of contec-t with. the valve chamber Wells, valve having [at fuel passenger diametrically therethrough, pee mounted on said valve notion-ant obill.

viding a head s einet which the enn-lesion asssgeway, and sealing meens introduced l tween said valve and the adjacent valve i chamber Wells.

6. in an ex losive engine "a. cylindricall rotagy valve sving a fuel essageway 'fdrrned diametrically therethroug journaled in bearings adjacent its ends, whereby said vglveis maintained out of contact with the i valve chamber walls, packing rings mounted i on said vslve adjacent said passageway to 1 prevent the escape of the fuel longitudinally i of said valve, sealin means adapted to prevent the escape of uel circumferentially of 1 mild valve, and mechanical inesnsfor actusting said valve. p i

7. In an explosive engine a rotary valve having a fuel psssa evvey therethrough, said I valve being journuled in bearings adjacent 2 its ends whereby said valve is mein' sined l out of contact with the; valve chamber i ,wslls, fluid sealing means provided between i ssid valve and valve chamber wells to prei vent the escape of the fuel circumferentially of said valve, and additional means to prevent the escape of said valve.

.In an explosive engine a rotary vslve avihg a fuel passageway therethrough journaled in bearings adjacent its ends whereby said valve is maintained out of contact with the valve chamber wells, fluid sealing means between said valve chamber walls and said valve to prevent the escape of said fuel eircumferentlally of said valve, 1 and means to prevent the escane of fuel 1 ion itudinally of said valve, said valve in eeo half revolution thereof operating to: admit the charge, to provide a head against which the explosion takes place and to sf- 5 ford egress for the burned gases. 1 v9. In an explosive engine a. rotary valve hsving a, fuel passageway therethroug'h jouri nailed in bearings adjacent its ends ivherel'iy said fuel longitudinally of see e5 said valve is miintained out of contact with the valve chamber Walls, fluid sealing means between said valve chamber walls and said valve and longitudinal packing strips between said valve chamber walls and said valve to prevent the escape of said fuel circuinferentislly of said valve and means to prevent the escape of said fuel longitudinally of said valve.

10. In an explosive engine erotary valve having a fuel passageway therethrough journaled in bearings adjacent its ends Whereb said valve is maintained out of contact with 'the valve chamber walls, spring pressed I longitudinalpacking strips on said. valve to prevent the escape of said fuel circumferentially of said valve, and packing rings onssid valve to prevent the escape of said fuel longitudinally of'said valve, and. mean for actuating said valve. i

ill. in an explosive engine a rotary valve having a fuel passageway therethrough journaled in bearings adjacent its ends whereby said valve is maintained out of contact with the valve chamber walls, spring pressed longitudinal packing strips on said valve to prevent the escape of said fuel circumferentially of said valve, fluid sealing means introduced into the valve chamber between said valve and valve chamber walls to prevent the, escape of said fuel circumferentially of said. valve, and packing rin s on said valve to prevent thecscspe of sak fuel longitudinally of said valve, and means for actuating said valve. l

v in testimony whereof we affix our signstures in the presence of two Witnesses.

LEE A. FRAYER. CHARLES O. HOWARD.

Witnesses:

GEO. W. 'RIG'A'ITMIRE, A; Emma.

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