US1166939A - Valve for internal-combustion engines and driving means therefor. - Google Patents

Description

. .L LJRUSSELL.' g vALyEf fon INTERNAL c'omsusloN ENGINES AND DRn/INGA MEANS THEREFoR.

APFLIQATION FILED DEC. 18| 19,11.

Patented Jan. 4,

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EDWIN L. EUssELL, 0E CLEVELAND, oHIo.

VALVE FOR. INTERNAL-COMBUSTION ENGINES .ANDl DRIVING MEANS THEREFOR.

Specification of Letters Patent.

Patented Jan..4, 1916.

Application filed December 18, 1911-. Serial No. 666,477.

1'0 ZZ `whom it may concern.'

Be it known that I, EDWIN L. RUSSELL, a citizen. of the United States, residing at Cleveland, in lthe county of Cuyahoga and State of Ohio, have invented a new and useful Valve for Internal-Combustion Engines and l Driving Means Therefor, of which the following isa specification.

The object of my invention is to provide, for use in internal combustion engines, and elsewhere, a rotary valve and driving means therefor-.of 'such character that the valve cannot stick but will always be properly correlated withv its seat; such that proper compensation for wear may be readily made by unskilled hands; and such that vbackward movement of the driving member, due toV backward movement-of the engine when it is,

stopped, or otherwise, may not operate objectionably on .the valve.

The accompanying drawings illustrate `my invention.'

Figure-1 is an axial section ofl my improved valve and driving mechanism in an. f

internal combustion engine structure; Fig. 2

. j an enlarged detailof the co1 nection between the valve and its driverg'Fig. 3 an axial section of the two cam members of the driver; Fig. 4' a section on linea-4 of Fig. 2 looking in the direction indicated by the arrows;

and Fig. 5 a section on line 5-5 of Fig. 2

i looking in the direction indicated by the arrows.

In the drawings, 10 indicates a valve seat upon or in whichV the valve 11fisl mounted said valve being movable on its seat from opento closed position and from closed to I' and from seated' position.

drawings I have shown the seat and valve as open position, and being also movable toward axially tapered, as is common with ordinary plug valves, such form being probably the most practical commercially, although it is -to be understood that my present invention is by no means limited to this precise form.

The valve 11 is, in the instance illustrated,

intended to be constantly Adriven in one directionas a result of the reciprocation of the piston 13 in the internal combustion cylinder 14, thepiston being connected by pitm'an 15 with crank-shaft 16, and for that purpose-I provide a driving shaft 17 connected to shaft 16 by means of the two spiral gears 18 and 19 connected to said shafts respectively.

"casin In the lpresent Splined 1 1pon'shaft17, near its lower. end,- ,i

is a sleeve 21 which, at its upper end, is provided with a radially extending flange 21 adapted to engage the upper end of casing 22 in whichthe sleeve is-journaled. Splined upon the lower end of sleeve 21 is a gear 19 whlch rs held in place by a nut 20, the arend of the hub of the gear 1,9 and may have a thrust engagement with said gear and also with the nut 20. For this purpose nut 23 is conveniently made hollow so as to' receive the nut 20. Nut 23 is held in position upon the lower end 'of shaft 17 by a check nut 24. It will be noticed that any downward pressure upon the shaft 17 will be transmitted as a pullupon the nut 23 which will, 'in turn, pull upon nut 20 and thusv pull upon sleeve 21, and that this pull will be resisted by the action of flange 21 upon the upper end of 22. By means of this arrangement shaft 17 does not come into direct thrust upon sleeve 21 or casing '22 and consequently may have .arr-freedomA of axial adjustment relativejote l'sleeve 21, this adjustment bemg varied by variation of position of nut 23 lip-0h he shaft.

Secured to the upper end of shaft 1 7 is a I sleeve 25 provided arcircumferential flange 26 and a pair of upwardlyrprojecting cams 27 having helical active faces.V Sleeygdf,

over sleeve 25 is a tubularhead 28 having an internal flange 29 lying beneath flange 26 and` held axially in place by a tube 25 which is fixedly secured to sleeve 25. The axial flange v or main body -of head 28 has formedwithin it a pair of diametrically-opposed similarlyextending helical slots, or screw threads, 31v forming both upper and lower -active edges or cam surfaces, -and preferably having the same pitch as cam 27 but opposite thereto.

-Tube 25 ofsle'eve 25 carries a pair of diametricallyfopposed, radiallyextending lugs 32 arranged to engage,'in one direction, with "downwardly projecting pins 33 carried 'by' head 28, the4 arrangement being such that there may be considerable freedom of rotation of sleeve 25 in one direction relative to head 28.

I-Iead 28 is projected into a socket 35 formed in the lower end of valve 11, there being freedom of relative movement both axially and rotatively. Projecting radially from head :28 are two diametrically opposed lugs 23 between which and abutment 10,/ of valve 11 are arranged compression springs 37. Projecting diametrically across socket 35 is a pin 38 upon which aie mounted two pairs of rollers, the rollers 39, 39 being within slots 31 and the rollers 41, 41 in position to be acted on by cams 27.

AThe springs 37 constantly tend to drive the valve 11 forwardly relative to the di'iving shaft 16 and, as such relative movement shifts the slots 31 relative to pins 3S the valve is under the constant tendency of the springs to be drawn down into the seat, the shaft 17 being axially fixed. I

In initially setting the parts nut 23 will be screwed up on 'shaft 17 until springs 37 are under desired tension and in that position of the parts there may be a slightplay of lugs 32 from pins 33 before cams 27 come ii'ito engagement with rollers 41, as indicated in Fig. 4.

When shaft 17 is rotated in the direction indicated by the arrows in Figs. 1 and 4,

- lugs 32 engage pins 33 and-the valve 10 will be rotated by the combined action of springs 37 and the interaction of the lower edges of slots 31 and the rollers 39. If the resistance of the valve to movement is too great the springs will yield, slots 31 will slide under rollers 39 and the valvewill be moved aXially from its seat but the upper edges of the slots will prevent too great an axial movement and will, of course, prevent any axial movement of the valve due to any gaseous pressure' applied to it. Iininedi- .ately that the valve is released from its seat it starts forward both because of the cir-v cumferential component of the interaction of slots 31 and rollers 39 and also because of the increased tension of springs 37 so that the valve is properly advanced and at all times held to its seat with sufficient force to maintain a-tight joint and yet under such yielding conditions that it may at all times be driven as desired.

When the engine stops it is quite possible that there may be a final backward movement of shaft 17 and therefore lugs 32 will be withdrawnfrom pins 33 and cams 27 will slide under rollers 41 so as to catch the valve 114 (by pins 38, and rollers 39 and 41) in the crotches between cams 27 and slots 31 so as to.sliift the valve 11 backwardly without danger of the upper edges of slots 31 sliding over rollers 39 and serving to draw the valve more'tightly into its seat without driving it backwardly. Indeed, if the valve should tend to stick in its seat during the backward rotation of the shaft 17, the cams 27 will slide under rollers 41 enough to lift the valve 11 so as to release it from 4its seat and permit its free movement.

It will be seen that, by this construction, I am enabled to drive my valve in either direction on its seat and, under either direction of driving force, to properly release the valve and at all times maintain a proper seating thereof. It will be noticed that an axial adjustment of shaft 17, if the shaft be held against rotation,H will result in a rotation of the valve in one direction or the other, so that the valve may thus be brought accurately into time with the crank shaft, by the aXial adjustment of the shaft 17.

I claim as my invention:

1. In an internal combustion engine, having a driven shaft capable of rotation in either direction, of a valve structure comprisinga seat member and a seated member movable toward and from the seat member and also movable along the seat member, Vand a driving connection between said shaft and the seated member, said-driving connection comprising a spring connection between the driver and the seated member, interengaging members carried by the seated inember and driver whereby movementjof the driver in either direction will cause corresponding movement of the seated member, said connection permitting movement of the driver in either direction relative to the seated member and consequent movement of the seated member away lfrom its seat.4

2. In an internal combustion engine having a driven shaft capable of rotation in either direction, of la valve structure comprising a seat member and a seated member movable toward and from the seat member and also movable along` the seat member, and a driving connection between said shaft and the seated member, said driving connection comprising a torque-applying spring connecting the seated member and the shaft, interengaging members carried by the shaft and the seated `member andv interacting under normal stress of the spring to drive the seated member toward its seat and, iindei1 resistance of the seated member to movement on its seat by the shaft, to drive l l l the seated member initially7 from its seat upon movement ofthe shaft in either direction.

its

3. In an internal combustion engine havdouble-acting. cam-connection between the shaft and valve, and a second oppositely acting helical cam-connection between the shaft and valve, one of said cam-connections havthe shaft.

ing limited range of movement relative to tween the driver and valve, one of said c-amconnections having'a limited range of movement relative to the driver, and the other' being' directly carried by the driver.

5. The combination of an axially tapered seat, an axially 'tapered member 4seated in the vseat and both rotatablyand axially movable, a driver, a torque-applying spring connecting the .driver and seated member, a

Vhelical double-acting cam-connection between tlie shaft and valve, and a second oppositely acting helical cam-connection between the driver and valve, one of said camconnections having a limited range of movement relative to the driver. f l

'6. The'coinbination 4of an axiallytapered seat, an axially4 tapered member seated in the seat and both rotatably and axially movable, a driving shaft substantially' co-v axial withb the lseated member, 'means for holding and adjusting said shaft axially, a

helical, double-acting caiii-connectionbetween ithe shaft and valve', and an oppositely acting helical cam-connection between the shaft and valve, one of said-,cam-connections havinga limited range ofrotation relative vto the driver. j

7. The combination of an axially tapered seat, an axially tapered member seated in the seat and both rotatably and axially movable, a .driving slia'ft substantially cozixialvfith the seated member, means Afor cam-connection between the shaft and valve,

holding said shaft axially, a helical, doubleacting cam-connection between 'the shaft and valve, and an oppositely acting helical one of said cam-connections having a limited range of rotation relative to the driver.

8. The combination of a seat member, al

seated member associated therewith and movable both along and away from the seat member, a d-river, a double-acting cam-connection between the driver and the seated member, a second cam-connection between the driver and seated member, one'ofs'aid' cam-connections having a` limited range of- ,rotatable seated member associated there'- with, a driving shaft, meansy for axially.

movement relative to the driver, a torqueapplying spring` arranged betweenthe driver and seated member, the said 'camconnection .between 'the driver and seated d'river: relativ` ber'frointhe seat memberff 9.- The 'combination 'of a seat member, a

seated member associated therewith and movable 'both along-and away from the seat member, a driver, a; double-acting cam-connection between the driver 'and seatedvmember, a second cam-connection between the driver and vseated member, 4one of said cam- -conneetion's having a limited range of movement relative to the driver, the said camconneetions between the driver and seated lmember being such that movement of'the driver relative to the seated member -in either direction will move the seated memlber from 'the seat member. l l

10. The combination of la seat member, a

rotatable seated member associated therewi-th, a driving shaft,'means. for axially holding said driving shaft and for axially adjusting the same, a ydouble-acting camcoiinection between the shaft and seated member serving to rotate the seated member by shaft rotationand also serving to axially shift 'the seated member upon rotation of the shaft relative to the seated member, a second cam-connection between the shaft and the seated member also serving to rotate the seated Amember upon rotation of the lshaft in onedirection and serving to shift the seated member away from the seat member upon rotation of the shaft relative to the seated member in the active direction of said last mentioned cam-connection, o ne` of 'rotatable seated member associated therewith, a `driving shaft, means for axially holding said driving shaft and for axially. v

adjusting 'the saine, a double-acting camoonnection between 'the ishaft and seated member serving torotate the seated member by shaft rotation and also serving toaxially shift the seated member upon rotation of the shaft relative to the seated member, and a. secondl cam-connection vbetween the shaft and the seated member also serving to rotate the seated member upon rotation ofthe shaft in one direction and serving to shift the seated member away from the seat member upon. rotation of the shaft lrelative to the seated member in the active-direction of said last mentionedcam-connection, one of.

said cam-connections having a limited range of movement relative to'the driver. I,

12. The combination of a seat member, a.

holding said driving shaft and for axially {.adju'sting'the same', a double-acting camwith and-also movableaxially, a driver, a

Acam-connection between the driver and seatedA member controlling axial movement in both directions of the seated member by relative rotative movement between the driver .and seated member, a second camconnection Ibetween the seated member and driver producing axial movement of the seated member in one direction by relative rotative movement between the driver and seated member, one of said cam-connections having a limited range of rotative movement relative to the driver, and yielding torque-applying means acting upon y the seated member tending to produce rotation.

Y, thereof relative to the driver and thereby .cam-connection between the tending to drive the seated member axially toward its seat.

14. The combination of a seat member, a

rotatable seated `member associated there-l with and also movable` axially, a driver, a

seated member controlling axial movement in both directions of thel seated member by relative rotative movement between the driver and seated member,a second camconnection between the sea-ted member and driver producing-axial movement of the seated member in one direction by relative' rotative movement between the driver and seated member, one of said cam-connections .having a limited range of rotative movement relative to the driver, and yielding means acting upon the seated member tending to produce rotation thereof relative to the driver and thereby tending to drive the seated member axially toward its seat.

15. The combination of a seat member, a rotatable seated member associated therewith and also movable axially away from the seated member, a rotatable driver, a helical connection between the driver and seated member controlling movement of the seated member in both directions axially'by relative rotation between the driver and seated member, a second helical connection betweenthe driver and seated member producing axial movement of the seated member in -one direction upon relative rotation of said last mentioned helical connection in one direction, one of said helical connections havling a limited range of rotation relative to the driver, and yielding torque-applying means acting upon the seated member to driver and produce, in conjunction with said helical connections, a combined axial and rotative movement of the seated member toward the seat. e

16. The combination of a seat member, a rotatable seated member associated therewith and also movable axially away from the seated member, a rotatable driver, ahelical connection between the driver and seated member controlling movement of the seated member in both directions axially by relative rotation between the driver and seated member, a second helical connection between the driver and seated member producing axial movement of the seated member in one direction` upon relative rotation of said last mentioned helical connection in one direction, oneA of said helical connections having a limited range of rotation relative to the driver, and yielding means acting upon the seated member to produce, in conjunction with said helical connections, a combined axial and rotative movement of the seated member toward its seat-` 17. In an internal combustion ,engine,the combination with the cylinder, piston and crank shaft, of a valve seat communicating with the cylinder, a'rotatable valve associated with said seat, a driving shaft drivvingly connected with the crank shaft and arranged axially of the valve, a helicaldriving connectionv between said last mentioned shaft and the valve, acting to control the angular position of the valve relative to its seatby variation of axial position of the l shaft, a second helical connection between the driving shaft fand valve acting upon said valve in the direction opposite to the action of the /irst helical connection, and one of said helical connections being rotatable relative to the shaft, means for normally holding the driving shaft -axially relative to the valve and for adjusting said shaft axially to vary the angular relation of the valve relative to the shaft, and a spring l acting circumferentially upon the valve and oneof the helical connections tending to shift the valve axially and angularly relative to the shaft.

18. In an 'internal combustion engine, the combination with the cylinder, piston and crank shaft, of a valve seat communicating with the cylinder, a rotatable valve associated with said seat, a driving shaft drivingly connected with the crank shaft and arranged axially ofthe valve, a helical driving connection between said last mentioned shaft and the 'v-alve, acting to control the angular position of the valverelative to its seat by variation` of axial'position of the shaft a second helical connection between the driving shaft and valve acting upon said valve in the direction oppositeto the action of the first helicalV connection, and one of' said helical connections being rotatable relative to the shaft, means for normally holding the driving shaft a'xially'relative to the valve .and for adjusting said shaft axially to vary the angular relation of thevalveA with the' cylinder, a1-'rotatable valve associated with saidfs'eat, a driving shaft drivingly connected with the crank shaft and arranged axially of the valve, a helical driving connection between said last mentioned shaft and the valve, acting to control the angular l position of the valve relative to its seatby variation oflvaxal position of the shaft, a

second helical connection between the driving shaft and valve acting upon said valve vin the direction opposite to the action of the Virst helical connection, and one of said heli# 'cal connectionsbeing rotatable-relative to the shaft, and meansv for normally'holding.

the driving shaft axiallyrelative to the valve and for adjusting said shaft axially to vary the angular relation relative to the shaft. I

20, In an internal combustion engine, the combination `with -the cylinder, piston andA crank shaft, of a valve seat communicating with the cylinder, a rotatable `valve associt ated with said seat, a driving shaft drivf ingly connected with the crank shaft and of the valve arranged axially ofthe valve, a helical driving connection between saidlast mentioned shaftand the valve, acting to controlthe angular position of thei valve relative 'to itsl vseat by variation of axial position of thevv shaft, and means fornormally holding the driving shaft axially to vary the angular relation ofthe valve relative to the shaft.

.In witness whereof, I have' hereunto slet.

my `hand and' seal at Indianapolis, Indiana,

this 11th day' of December, A. D. onelthoul sand'nine hundred and eleven. y

EDWIN L. RUSSELL. [L sa I Witnesseszj l I ARTHUR-M. Hoon,

FRANK A. FAHLE.'

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