US1091918A - Gate-valve. - Google Patents

Description

T. M. BYNUN.

l GATE VALVE. APPLICATION FILED JUNB1,1912.

, 1,09 1,918. Patented 111111.31, 1914.

2 SHEETS-SHEET 2.

FIG. 3 135. 1

Z1 2f Fla. 5.

F1a. HG. 7

lNvN-ron WITNESSES f (3W/VU, BY I III di@ ELN THOMAS M. EY'NON, 0F HILADAEPHIA, PENNSYLVANIA.

GATE-VALVE.

Specification of Letters Patent.

Patented Mar. 31, 1%?14.

Application filed June 1, 1912. Serial No. 7091.943

To all whom it may concem:

Be it known that I, THOMAS M. EYNON, a citizen of the United States, residing at 1426 Allegheny avenue, Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Gate-Valve, of which the following iS a specification. l

The purpose of my invention is to rind a gate valve seat by the valve itself, pre erably by rotary movement of the valve,

A. further purpose of my invention is to provide a rotary valve closure or closures for a gate valve scat or seats, which can be positively rotated, revolved or oscillated in place, and which can he positively rotated or not during the Opening movement, as dev sired.

A further purpose of my invention is to providel Jan -eccentrically mounted' annular valve; fue or faces, adapted to close a circulifgate valve seat or seats.

'further purpose of my invention .is to mount a rotatable gate valve closure upon a carrier, guided to prevent lateral play, and provided with concentric means for rotation of the closure..

A further purpose of my invention is to provide a gate valve with means 'for posi tive angular movement against its seat withv out axial movement of the stem and o erable by the stem, Without additional supp einen'- t-ary supporting parts, by mere vremoval Of the bonnet.

A further purpose of my invention is to form a carrier for a. disk gate valve closure with a laterally supported and` guidedweb, and to'eonnect it with the stem rotarily, connecting the disks rotarily with the stem 0I' not/at will, for disk rotationA Further purposes of my invention will anpear in the specification and claims thereof. I have preferred to illustrate my invention hy a form thereof, which I have found simple, relatively inexpensive and highly` etlicicnt, and which at the'same time well illustrates the principles thereof. 1

Figure 1 is a longitudinal vertical section of my preferred double valve structure. Fig. 2 is a ,transverse section of the strueture-of Fig. 1,-taken uponline Q2'thereof. Fig. 3 is a horizontal section of the structure shown in l, taken upon line 3T3 thereof. Fig. fl is aperspective vie-W of the movable elements of the form shown in l.. I" g. 5 is a partial' vertical section allor."- ing but one valve closure in place; I' G and 7 are face elevations of several forms of valve closure, ameno the many variations thereof-Which might be made to suit the vievvs of the designer.

Similar numerals of reference indicate like paris in the drawings.

lffhile I prefer to use the doable closure having facing: annular seats an i positely facing, cooperating, rotatable, aa nular closures therefor, and Vhave"slu'-:sr this form in Fig. 1, it will be evident that. a sin gie seat and closure, as seen in Fig. will be fully effective for many forms valve. 1

'Ihe valve bodyI 5. of any suitable material, provides for flow of fluid in eitherdirection, hut for convenience, the end at 6 will 'be considered as the inlet end, and the end 7 as the outlet. I provide facing seats 8 and 9, which are here shown asparallel and annular, but which may evidently vary in both particulars -Without de arting ,from the spirit of my'invention. l) prefer not to dish theln at all since this would require more axihly play in the closures than ordinarily desirable. I have shown the simplest form, with plane,fcoaxial, annular, 'facing seats. A single closure may be turned either Way to cooperate with either seat. Vl/"natevcr the contour of the inner and outer edges l() and l1 of the ,single valve seat, now consideredl prefer to make the cooperating face 12' of the valve l2 itself, Whichy I will for clearness, refer to as the valve closure., in the form of an annulus, because this closure is to bc rot-ated, oscillated or revolved against the seat.

While I show my Valve closures as :of 'circular contour, with annular sealingfaces. I. prefer to mount them eecentrically.'V

therefore form the tubular extension 13 een face and give centric tothe annular sealing it support and bearing from the carrier 14 by fitting it within the tubular part 15 of ill? 5 extension of the sides of the carrier 19 and 192 to cooperate with the walls of the groove.

The sides of the carrier thus form fins or webs 20, 20 parallel to the walls of the grooves 17. Obviously various other means of guiding and supporting Vthis carrier or another suitable carrier will occur to those skilled in the art.

Since the carrier is not rotatable, the stem 21 must be connected with it to permit rotation therebetween, and I have shown a convenient form of this connection in the boss 22, secured to or forming part. of the upper end of the carrier, and having ears 23 through which are passed Cotter pins 24, so

201that the bodies of the pins lie partlywithin the groove 25 upon the part 26 of the end of the stem. The stem is threaded at 27 in the usual way to engage with threads 28 upon a bonnet or stufling box 29, .which is screwed 25 upon the top 30Y of the valve body, as at 31. At the top of the bonnetl or stuling box, the stem passes through any suitable packing 32, compressed by gland 83 and cap 34, all well known in prior constructions. The

30 handle 85, and the thread and nut constructions 36 and 37 by which it is held in place, are also Well known. l

So far as outlined, the closure at 13 can be raised and lowered past and in scraping con- 85 tact with the seat 8, and past the valve opening. It is also, thus far, free to turn within the bore of the carrier and, as best seen in Fig. 5, is pressed tightly against the seat 8 by the lpressure of the fluid entering at 6,

40 and moving toward the opening 7, the direction shown by the arrow.

In its upward travel" the valve is not moved farenough forthe lower end of the closure to lose contact with the upper end of the seat, avoiding the necessity for any tapering or other protection against strikly invention provides for the "positive ro-l tation, oscillation or revolution" of the clo so sure, with upward or downward movement of the stem, if preferred, and without vertical movement ofthe stem when grinding. I illustratel one construction by which these may be accomplished, while recognizing that other structures for carrying out my invention will occur to skilled designers in this art in view of my disclosure herein.

The construction bywhich I prefer to turn theclosure, under anyl conditions retuiring that it be turned, and which I have lustrated, consists in placing annularly arranged gear'teeth, as at 38, upon the back of the closure, `and turning the closure through them by iieans of teeth 39, upon gear 4f). whivh' may be connectedftQ-'lotate with the stem 21, or be free from it, at will. The gear 40 is concentric with the spindle and is mounted, in the form shown, by a stub 41, having bearing at 42 within the end lat 26 of the stem. As will be seen my construction makes it ossible to maintain the gearing constantly in mesh.

The face about the valve opening, in which form I have preferred to illustrate the valve seat, may be ground by moving the valve closure against it, constantly in one direction or rocking it back and forward, and whether the closure turn about its own center or not. I turn it by the stem, first removing the bonnet so that there may be n o vertical movement of the stem, and securing the stub 41 against rotation with respect to the stem by means of a pin 48, passed within the opening 44 of the stub and the opening 45 of the spindle or stem.

Since the carrier 14 is guided against rocking within the plane of the section in Fig. 2 by the webs 20 and 20 which bear at their edges against adjoining walls of the valve body, and against movement at right angles thereto, by engagement of the sides of these webs with the uidcs 18-183, this carrier can have no latcra movement in any direction other than such as it may be deemed desirable to permit in order to prevent jamming. The stein may therefore be freely turned to provide for grinding of the valve surface without necessity for support from the bonnet, and 'without the addition of any stay or strut or other brace for the stem.

The means for connecting the gear 40 with the stem, where disconnection is at times desired, may obviously be greatly varied within the discretion of the designer.

In some sizes of valves, and for some uses, the connection between the stub and the stem may be maintained at all times, where the user prefers to have the disk 13 rotate or revolve during the uiting andlowering of the valve, e., when the thread upon the stein turns within the thread of the bonnet. This has the advantage of scrapin and cleaning the valve seat with each odily movement of the closure, a feature highly desirable where the fluid passing through the valve has a tendency toA attack or coat the seat.

Where the gear 40, and the stub 41 are inl tended to be connected permanently or any .considerable part of the time, it may often prove desirable to allow a little play between the gear and the teeth on the back of the closure, so that there may be some yieldin between the two vin case of obstruction.'A

-I ave illustrated the opening in the stub as larger than the opening in the stem,to allow some .longitudinal play ,f for the gear where' some slight yieldipg movement is desired.1 '1lhisstructure maybe greatly varied for the purpose intended and may be omitted where this function is not desired.

The closure 12 may be made in various forms, and I have shown it in Fi 6 with its annulus 12 eccentric with the ange 13 in which form the grinding of the valve face will be by oscillatory movement of one annulus turned about another annulus eccentric thereto. Oil and abrasive material may 10 be placed upon the exposed part of the face of the closure as the heavy side of the eccentric comes up.

In th' form shown in Fig. 7, the closure face or annuius is mounted concentrieally with respect t0 the `bearing 13 with the result that this valve face moves over the valve seat evenly, without oscillation.

The relation of the teeth to the closure may be. varied but I have preferred to arrange them coneentricall about the bearing 15, whether the face of t e closure be eccen tric to this bearing collar or extension or not, as I thus obtain more uniform meshing of the 'teeth upon the closure with those upon gear 40. With this arrangement upon an eccentric closure the heavy end of the eccentric shows beyond the teeth at 4G. It will be evident that many changes in regard to the detail of all these parts may be made.

Where but a single closure is used, as in the description thus far given, the pressure of the tiuid tending to pass through the valve should be brought against the back of the valve closure, and presses the valve face effectively against the valve opening.

Obviously in a structure such as that shown, having two valve o ienings and similar seats about them, the e osure 13 may be used with either seat by mere withdrawal of the stem and carrier and reversal of the direction in which the closure is inserted within the carrier or of the direction in which the carrier is turned. The valve is ell'ective, therefore, with either direction of flow.

I prefer to use two closures of the form seen in Fig. 1, mounting them similarly and having both engage the same gear 40. I illustrate a (lange 1B upon the second gear here shown as fitting within the flange 13,

60 'm order that each liange may have bearing substantially the entire width of the carrier.

For g'inding purposes, I use any suitable means, ere shown as spring 47, to press the closures against the valve seats, and any such means may be used continuously where it is desired, though my own experience has been that it is not necessary.

'I` he operation is substantially the same g whether one closure or two be used, though with one. the pressure of the fluid is usually relied upon to keep the valve closure against the seat while the spring is often used for this purpose in the case where two, closures are used.. Where the closure is eccentrically mounted, the annular faces, by which I prefer to have them engage the valve seats, move with an oscillatory swing about the seats.

If the user desire to have the closures turn at the same time that they move across the valve seats, the connection between the gear and the stem is left in all the time. Otherwise, it is omitted or disconnected until the seat is to be ground. The handle is then removed, and the bonnet disconnected from the stem and the connection between the stem and gearing made. The handle is then replaced, when the closure or closures may be'rotated by the handle to the desired extent to grind the valve.

Where l have referred to rotation of the closure, or similar language in the claims, I have intended to include angular movement of the closure, whether it be oscillatory or continued in one direction and whether the g5 face be turned about an eccentric axis or about its true axis.

It will be evident that other forms of connection to rotate the closures and other forms of closure, closure mount, carrier, etc., may be used, and, in general, that many chan'ges from the disclosed structure by which I prefer t0 carry out my invention, will occur to those skilled in this and allied arts and may be made without departing from the. spirit and the scope of my invention set forth in the claims appended hereto.

Having thus described my invention, what I claim as new and desire to secure by Letters Iatent is1 l 1. The process of grinding a disk'closure gate valve which consists in disconnecting the operative stem for drawing the regular valve disks across the face of the seats so us to maintain the disks in fixed position and subsequently rotating the stem to rotate the disks positively in opposite directions vvith required grinding material while they are maintained in axially correct posilion with respect to the valve openings.

2. The process of grinding a valvehaw, ing movement transverse to the valve opening, which consists in separating the stem from its connections for causing the travel across the opening, supporting a valve elosure from a relatively fixed member in axial coincidence with the position of the valve when fully closed, supplying any necessary abrasive and in positively rotating the closure by means of the stem whil'e maintaining its axial position.

3. The process of grinding a double closure valve having thelosure movable across the valve openings, which consists in disconnecting the means for moving the valve 125 across the opening from its `co'rperating member, supporting both closures in position axially coincident with their positions when fully closed, supplying any required abrasive and rotating the valve closures by 13o the rotation of said means While maintainingtheir axial positions. i

4. ln a gate valve, in combination, a val\e body having,r an opening and a Seat transverse to the opening, a valve closure movable across the opening and also angev larl y about it and engaging the valve seat, a carrier for the closure, guides for the edges of the carrier in tne valve body and means having a common element With its axis parallel to the direction of movement of the carrier for giving the valve closure. movement across the opening and about it selectively.

5. ln a gate valve, a valve body havingl openings in line and opposite annular faces surrounding the openings, guides in the valve body, a carrier engaging said guides, a bearing upon Said carrier, a valve elo-eure adapted to engage and turn in said bearing;r and having an annular face with the annulus eccentric to the axis of the bearing, annularly arranged gear teeth upon the closure, a. stem and a gear capable ot rotation by the stem and engaging the gear teeth.

o. In a gate valve, in combination, a valve body having an opening and a valve seat transverse to the opening, a valve closure movable across the opening and also angularly about it, a carrier for the closure guided to permit movement of tbe carrier across the opening and prevent movement of the carrier in other directions .nd rotatably supporting the closure, a stem engagingr the carrier-and rotatable. With respect to it, a removable bonnet engaging the stem to provide movement of the carrier across the valve opening, gearing; between the valve closure and the .stein and a removable. ronnection between the stem and the gearing to render it controllable by the stem or free therefrom.

7. VIn a gate valve, in combination, a. valve body having an opening' and a valve scat transverse to tbe opening, a valve cloY sure movable acrossK the opening', and also independently angnlarly about it, a closure operating spindle, tcctl on the back ot' tlhe valve closure, a carrier `for the closure, guides in the body permittingh movement in one direction, and supporting against movement in the othcr directions, an extension of the closure, having bearing' in the carrier, a gear meshing with the teeth on the closure, having itt ax parallel to the direcV tion of movement across the opening, and operated from the same side of the valve the spindle, and means for rotating the gear.

8.1'n a gate valve, in combination, a valve body having an opening and a valve seat transverse to the opening, a valve closure movable across the opening, and also independently angularly about it upon a fixed center, a closure operating spindle. a support for the closure, providing bearing I while the stem is maintained longhi for the angular movement or Lne cio .j guides for the snpporhpermittieg more nient in one direction and supporting against movement in other directions. teeth on the back of the closure land a gear isavina cf; its axis parallel to direction at r love ment across the opening, and operativl f stom and cooperating with the .sittin tra: rately positively rotating the ein ux.'

place against the seat lo ad in the sama: position.

'10. In a. gate valve, in .f-oinlmw valve body, having an opening :zr-t a vaiv': Seat transverse to the opernngj, a. 'l o closure movable acres.: th. angnlarly about it, a .spindle ein closure to move it aerei *flee opel. at the sidesy ot the body. fotm tween, a carrier provided ing the grooves and slipper-fed the guides, a Cylindrical beam carrier, cooperating cylind secured to the mesure, and ge; ing one gear rotated by the s sin: neoted with the closure to tarn i 1l. ln a gate valve, in con valve body having an opa-11i nnlar scat about the openiz ing an annular tace engaging-'i seat adaptedY to movey bodily in -,'r the face, a` carrier for the clcsa support it against the sea t. .br-ari upon the carrier and einem e, ha i" eccentric to the annular face of t and n'leanrs` for positivi-.ly turni from outside the valve body.

l2. ln a gate valve, inV cominiiaton valve body having an opening and nular seat about the opening. an "loenre engagind said seat. Licentie ing; for said cl and means :tor'n' iively tori' fie ma .arr annnlus from out. e *ghe valve bo i3. In a gate valve. in combination, a valve body having an opening l fn nnlar seat about the opening, a, c )sure im'. :ing an annular seat on one rifle tl'iereo, teeth upon the back thereof a tubular extension between the teeth and the centel of the closure, a carrier for the closure has# ing finned sides and a cylindrical bearing fittin the extension of the closure. ,froides for t e carrier, a .stem moably "ferner laf..

rl o. are l 1 o with the carrier to permit free annular CIT.-

inc-vement therebetween, ay gear removably connected w th the stein and coaxial therewith and a removable bonnet connected with Athe stein to canse axial n'iovement therebetween with rotation of the stem.

14. lin a gate valve, in combination, a valve lrodywhraving valve openings and fao .ng annular valve seats thercabout, a carrier, guides for the carrier in the valve body, a valve closure rotatably supported within the carrier, movable angularly therein and adapted to enter from either side of the carrier to cooperate with either seat and "neaiisiaving Q.Oiymon operating parts for giving the valve closure movement-across or about the seat with which it engages selectively at will.

15. In gate valve, a valve body having al Ymesh with the teeth on the closures for positively rotating both closures about cen ters fixed with respect to the seats and against the seats.

17. ln a gate valve, in combination, a valve body having valve openings and fac ing valve seats, oppositely facing rotary va ve closures cooperating with the seats, a support for the closures maintaining them in relatively fixed axial relation, continu- 'ously operative means for pressing the closures away from cach other in all angular positions of the closures, and a gear constantly in niosh with the teeth on the for positively rotating both closures I i seats.

lo. 'in a gate valve, in combination, a valve body having valve openings and facvalve seats, oppositely facing valve closures for the two seats, having gear teeth upon the baul-:s of the closures, a support for the ciosures maintaining them in relatively 'ixed axial relation and a gear constantly in mesh with said teeth upon both closures for positively rotating both closures about centers ixed with respect to the seats and to each other.

19. ln a valve, in combination, a valve body having valve openings and facing valve seats, oppositely facing eccentric valve closures for two seats, .facing gearing upon the elosur, an intermediate gear engaging with the teeth upon both closures, a

spindle for turning this gear to rotate the closures and a bonnet cooperating with the spindle to give the spindle longitudinal movement.

QQ. ln a gate valve, in combination, a valve body havingl valve openings and facing valve seats, oppositely facing rotary valve closures cooperating with the seats, a closure operating spindle, a carrier common to the two closures, maintaining their axes ot rotation in fixed relation to each other, a spindle adapted to operate the carrier across the seals, means for pressing the closures away from each other, and means coaxial with the spindle and operated from the same side of the valve as the spindle for positively rotating both closures about centers fixed with respect to the lseats and against the seats.

21. ln a gate valve, in combination, a.

valve body having valve openings and oppositely placed; facing, annular seats about the openings, a stem, a carrier, guides for.

said carrier rigid with the valve body and restricting it to straight line movement, a rotatable valve closure supported in saidl carrier and adapted to engage with either seat, an axially movable stem connected with said carrier to move it across the openings., means coaxial with the stem, and operated lfrom the same side of the valve as the stern, for rotating the closure and means for en gag-ing the stem to move the carrier across the valvefopenings.

E22. In a gate valve, a valve body having valve openings and annular, axially coincident, facing seats about the openings, rotatable valve closures for said seats, a spindle and connections for moving the closures across the openings, resilient means for pressing the valve closures against the seats and means coaxial with the spindle, and operated from the same side of the valve as the spindle, for rotating the closures about a fixed axis passing through the valve openings.

23. In a gate valve, in combination, a valve body having anvopening and an annular scat about the opening, an annular' elo` sure engaging said. seat, eccentric mounting for said closure, a stem for inserting and withdrawing the closure across the seat and means upon thc stein and closure for positively turning the closure eecentrically to its annulus.

24. A valve body having two parallel annular seats at right angles to the line of flow of the fluid through the valve, a car-A rier having a guide on its edge and adaptcd to move across the seats, a guide in the body of the valve for said carrier, a pair of valve closures for said openings retained in fixed axial relation to each other wit-hin said carrier, a screw-threaded spindle rotatably connected with said carrier, a bonnet threaded for engagement with the spindle to move the carrier' longitudinally with rotation of the spindle when the bonnet is in place and removable for rotation of the spindle without axial movement thereof, teeth on said valve Closures, a gear adapted to engage with the teeth of both closures and mea-ns for removably connecting the gear to rotate With said spindle.

25. A valve body having two parallel annular seats at right angles to the line of flow of the fluid through the valve, a carrier having aV guide on its edge and adapted to move across the seats, a guide in the body of the valve for said carrier, a pair of valve closures for said openings retained in fixed axial relation to each other Withinsaid carsaid carrier, a bonnet place and removable for rotation of the spindle Without axial movement thereof, teeth on said valve closures, a gear adapted to engage with the teeth of both'closures, means for removably connecting the gear to rotate with said spindle and seats upon the valve closures eccentric 'to the support of said closures in the carrier.

THOMAS M.'EYNON. Vitnesses:

J. CUSTER, F. E. SGHULTE;

Images