US1027665A - Self-cleaning ball-valve pump. - Google Patents

Description

SEL-P G@ ALL VALVE PUMP.l

ummm fin-ms' 00T. 14, m0.

Patented May 28, i912.

3 SHEETS-S HEBT 1 C. L. PARKER SELF CLEANING BAIL VALVE FUMP.

APPLICATION FILED 00T. 14, 1910.

Patented May 28, 1912 .un www j j /r I Nu/W .w. E iw i ww* J a Hw (Mill. I M 1,1 Hf l l w, n .4 n 0 1 3 M www mw o. L. PARKER, SELF GLEANING BALL VALVE PUMP.

APPLICATION FILED 00'1514. 1910.

'mama May 28, 1912,

3 SHEETS-SHEET 3.

ATTORNEY STATES PATENT y 'OFHCE CLARENCE L. PARKER, oELos ANGELI-3s; oauroxmrni snm-CLEANING isnni-vnnunrunn l 1 u of Letterslatentl 2 81912# .Appumml meu octber u, uio. sriaiim. 587.055.

a citizen ofthe kUnited States,' residing at cation. Y This invention relatesfto pumps. ofthe deep-well `type and hasforone o f its objects'.

Los A11geles,in 'the `county of Los Angeles- 'fand State A of Californiafhave invented va .newy 'and y'useful' Self-Cleaning 'Ball-Valve Pump, of which the following ,visa specifi- Sary- Another object'of the imientin-i-s the pro- Vision' of a novel barrel constructionwhereby a true bore can be obtained at a minimumof expense and Work, thebarrel being pro-' l Yidednvith ar lining made. of'tubular sec-y tionscarefully boredfo'ut and finished and securedlin place by albinder between the barrel body kandl lining, sucl1 `hinfder `being preferalily sul-fur that is poured into'.the

space bfetween the barrelbody and lining when in niolten condition, the barrel havingf a'novel arrangement `of-sho'e and packing atits lower end for the footl "v alve."

With ...these objects in view and others," as

will appear as the description proceeds, the

inventioncomprises the variousnovel features of construction and arrangementv of,"

parts which ,will bemore fully described' hereinafter'nd Vset forth with particular inthe claims appendedhereto.

' "In' the accompanying ydrawings,` which lillustrate one"'embodin ient of the invention,

Figure 1 is acentral vertical section of the barrel of the pump showingthe `Working V`parts therein in elevation and in the position occupied during the upstroke of t-he plunger,

W'. h intermediate portions ofthe barrel and plunger broken Jaway.` F1g. 2 is a side View j of the upper portionpf-'the barrel, plunger and working vlveig, 4l is a similar View '5 y of theJ lowergportion barrel andiPAREn,.

Fig. 15 is a Verse section inc Fig." 6. Fig. '8g is a sectionalY barrel. "'Fig.'

r 'the 'foot Valve. Fig. "lfsec'tion 'of' a slightly mp5barrel. Fig. l2 is ca sec 'nnofunotherform of designay e corresponding parts the'v'iews' Referring to the drawings. n. designates tlie barrelof a pump, -"wh1ch has a'cylin'- 'dricalbody portion 1 that is contracted at its upper end finto a neck 2 which is con- 'in rig.-

neeted` byacoupling sleeve 3 Withthc tubing lsleeve so ythat-the barrel can be used in ordi". nary. Wellcasings in connection with .the usual slze tubing. Arranger-l within the Lcylindrical sections or sleeves -arranged in superimposed relation one on ano-ther and of any 'desired length. The lining is :made 1n ease4 with which they can be accurately bored, ascompared with long linings which Aare subject to 'Vibration and jar, due to the chattering of the boring tooll so that accurate turning isl rendered diicult. These lining sections are anchored in the barrel by .a suitable binding 6 which is preferably sulfur, The process of inserting the ,lining consists of placing the` sections V5 on a mandrel so Athat the section will accurately aline flfseotions are centered,'the space surrounding is filled-in' with `molten sulfur which quickly solidies and firmly cements' the-lining to the-IboElyY of the barrel. The lower end 0f the'bodyfiis' internally :and the mandrelzis 'centrally positioned inthe body Ylandy the sections are osuch dii1 vameter that an annular -sp'acewill entirely vsurroujnd the iining andvextend the fullv of the plunger and foot, valve 'removed from .Vfl the barrel 'and showing the parts in the. pof sition occupied durirg'the, last part ofthe downstroke, a portion ofthe plunger being broken'ai-yay.` Fig. 3 .isan enlarged section j 4 of the pump. By contracting the upper end of thev barrel, thebody portion can be made the samediameter ,as the coupling body'l of the .barrel .is a linlng-composeoi sections in this mannerv on account of the thread- I thelgbaijrel superimposed packing rings 10 for the body of the foot valve. The bore`of the Yshoe'is enlarged at the upper end to forma conical seat l1 for the foot valve and the lowerend of the shoe is reduced and threaded to form' a neck 12 for receiving the' coupling 13 of the anchor pipe 14;

Within the barrel is a reciprocatory plunger B which consists of a tubular body 15 that has a working fit with the lining of the barrel. In the upper end ofthe plunger body 15 is a sleeve V16 threaded throughout its length and having its lower end screwed into the plunger body, and on this sleeve is screwed a wear ring` 17 which is of hard steelland'carefully ground to the same diameter as the plunger body. The greatest wear on the plunger occurs at the upper end where Lthe sand adheres more strongly to thcnning of the pump barrel, and therefore the wearl ring is arranged'fat this point so as to take the wear and the ring can be renewed as occasion requires without having to scrap the entire plunger body. i VScrewed into the lower end of the plunger is a ring 18 that forms a hammer head for operating the foot valve cleaning and unseating device hereinafter to be described. -It will thus be seen that the plungeris hollow from one end to the other to provide for the free and unrestricted passage ofthe oil or other liquid therethrough.

Disposed above the plunger B is a working or plunger valve C which includes a bodily movable ball 19 which is-adapted to engage a seat 2O carried bythe upper end of the plunger for closing the same during the upstroke. This valve seat is in the form of a ring which lits partially into the upper counterbered end of the tubular member 16, and on the scat is a centralperipheral flange 21 which rests on the upperend of the member 16 and with which the base ring or collar 22 of the valve cage 23 engages. into the counterborcd portion 24 of the wear ring16 and screws on the upper. end of the member 16 so that the latter forms'a carrier or support. for the wear ring '17, valve seat 20, and valjye cage 23, and rigidly connects all of these parts tothe plunger body 15.

-The upper portion or crown of the cage is formed with a tubular hub extension 25 which' is connected with the sucker rod 26 by a connector 27 wh.' n is a tubular structure threaded at its lowcr end for receiving lthe extension 25 ot' the cage. The upper end of the connector is closed and formed with a threaded projection o-r stud 28 which screws into a thrcadedsoclget in the lower end of thc sucker rod. Arranged in the cage The base ring 22 of the cage fitsl is a valve engaged butfer 29 in the form of a cupped head that is carried by a stem 30 mounted for reciprocaton in' the top portion 25 .of the cage, whichis tubular, and pressing o-n this stem is a spring 31 housed inthe connector 27 with its lower end bear- =1ng against a. nut 32 on thestem. By this means, the stein can move inwardly7 as the valve engages the butler 29 onlthe down' l stroke of the plunger, and bythe valve thus engaging thel buffer, the sandy tending to adhere to the valve can be eectively removed, and besides, thel spring operates to seat the valve by imparting a downward movement thereto through the bui'er at the time the stroke is reversed. The springcontaining chamber 33 of the connector has ports 34 to afford an out-let for 'the oil that enters along the'stem 30.

` The foot valve, designated'generally D, comprises a hollowvalve body 35 that is stationary in the lower part of the valve but removable therefrom and it is disposed at that portion of the barrel where the packing rings 10 are loca-ted. The lowerend of theJvalve body 35 is contracted so' as to enter the shoe 8, and its contracted end' or extension 36 may be interiorly threadedl for connection with the foot valve anchor pipeA 37. In the extension 35 is 4an annular groove 38 which receives a soft metal packing ring-39 that tapers downwardly to snugly fit the 4seat 1.1 of the shoe. In placing the body 35 of themfootvalve, it is merely nepessary to let the same' suddenly drop )vhtrrlkear its final position, and, by reason "of'tli"taper of thepacking ring, a tight wedging action, will take place at the seat 11., The upper end of the body 35 is 'formed with a contraeted ext-e'nsirin lt'which carrisva' lvalve seat ring 41for the ball 42 ofthe foot valve.

The seatring 41 has a peripheral flange 43 which 4rests on the upper 'fend'of 'the extension 40 and is held place by the base ringv 44 of the valve cage 45, whichbase ring is:

internally threaded to screw on the extension 40. The ball ishcld'inicoperative re-l lation with itslseat by thel cage, ,the same being formed with spaced arms 46 connected with the base ring and .with a hub 47 at vthe top ofthe cage. f i j The lsand removing and unseating device E of. the ball L201? thefoot or standing valve is interposed between the lower end of the plunger and the foot valve cage 45. This device comprises approximately parallel spring ngers 48 whichhave their upper endssecured to. a head 49 and their" lower free ends arranged to move between the arms'ltl'i of the valve cage soi as to grip the ball at a plurality of points. In the present instance, -four spring fingers are shown and their lower ends are bent .in-.

wai-diy andA spaced diametrically apart va distance less than the diameter ,of theb'all wand inclosed by -the fingers.

' vdevice D and thereby moves thel fingers downwardly into ballfgripping position, and

f the spring ,is simultaneously compressed. During the succeeding upstroke, the spring 50 expands with the result that the ball 42A .ist first unseated and vraised untilfit strikes thejtop of the cage 45, when the fingers 48 vwill be eieased'. The tension of the fingers is less than the tension of the spring50 so that the latter will release the spring fingers 48 and carry them vupwardly beyondthe ball so as to' permit the latter -to kautomatically seat upon the do'wnstroke of the plunger; `For insuring the unseat-ing of the ball or working valve 19, a fixed rod 51 extends v'loingitudinall through the plunger and hasv its upper en so arranged as toengage the valve 19 and liftjthe same from its seat plunger, the low r end of the-rod 51 passing during the ./dovnward vmovement 'of thb atlirough -the/hea 4 9, spring 50, and screwinu `v into the hub 4 7 of th/e foot valve cage. This valve lunsea'ingv rod is centered by .a

j2secur/-, l/ttv the rod at .an inter lmediate pointl andengaging" in the -chamber the/plungerthe guide'bei/ng" in the form 'ofzfa `spider'lorniedfwithgeadial arms 53, as

a valvel The sprin vrod'ffrl, thefvalve wi l be positively unseated ifitrfsh/ulfl tend to Vstick on account ofl sand, and The rod yc op'erates w-ith the bu'er 29 to loosen whatever ,Sandwiscaught on the -ingers 48, by alter- 'l vinately gripping an releasing the ball ofthe foo't valve, eectivel clean theY same .from adhering sand, so, t at positive seating is secured. As the seating of the valves is an important factor in :determining the capac- ,ity lof the' pum the sand-removing devices herein disclosedare essential. `v` "During the downstroke of the plunger, `which is rigidly connected, with thesucker rod, the 'working valve 19 -will"be raiseld by engagement with *the relatively stationary rod 51, and vas the. lung-er oontinues'to de scend, the valve will engage `the buffer 19 which yields during the final partlof-the downward stroke, the `rball 19 being thus engaged. between thebufer 29 and rod 51,

uas `shown in Fig. 12. During the latter part 4oifthe downward movement of ,the lunger,

fingerlxcarrying head 49 to m'ove the device D from the position shown in Figs. 1 and 3 griplthesame. During the reverse part of the upstroke of the plunger, the column of valve will serve to keep theball 4of the latter seated until the seat 21 on the upper end of the plunger f engages the upper 'ball valve footvalve so that as the lunger continues to risegthe lower lball'42 wlll open'and allow rising plunger. The opening of the valve 50so that the ball valve isprevented from spring4 50 causes the spring iin'gersto'red free to automatically seat at the' beginning "of the next downstroke. Thus, as the plunger is reciprocated, the column vof oil the-outlet ofthe pump.

a pump barrel`54 indicated as a simple tube At the outer end the tube receives a couplin 55 carried bythe tubing 4, the p um barre and tubing being of substanti'allytlie same internal diameter. The coupling 55. is Aprovided with an internally threadedring 56 which may bear againstV the upper end'of pump barrel'receives one threaded end of a sleeve 57, and the other end'of this sleevegis .appropriately threaded to receive the upper end of the anchor pipe 14 and at amapformed with an inwardly directed flange 58, the upper face 59 ,of which constitutes a ledge for the'reception of `aching rings 60 like the packing rings 10 ofthe structure of Ylar member 6l having an external anntlar fia-nge v62 designed to bear against the .pack

ber 61is formedv withan'iternal flange 65 a ball valve 65 s .dapted :ton 'a valve 'seat r66 'Clampe'by the sfigato he, ang'elend 63 of the- .tubular member 61. i-fBelowt-he'- ange feratiy ef 1ste, and this seated a ring djpre ein - ringis desi necl the' Slelveig p'eredI oa' I thefalWer-ihdf of the latterv strikes' the lease the ball valve to permit the same to be is intermittentlyraised toI discharge from l In the structure shown 1n Fig. 11 there i v'95. of appropriate length threaded'ateach end. y

thepump barrel 54. At the lower end the to that shown in Fig. 2. :The free ends of the fingers strike the valve 'or ball 42 and l scrape `along opposite sides 'thereof to re#- mo've the sand from the valve and also to i oil in the tubing and barrel above the foot 19. The weight of the column of oil above the plunger will .thus be removed from the oil to enter the barrel inthe wake of the 4 2 is positive bythe expansionof the spring sanding up. The .nal expansion of the ico propriate intermediate point the sleeve 57 is Fig. 1. The packingrings receive a tubuing rings, and one end of this tubularlluernand exterior screwthreads:designed to re" ceive the threaded end of acage mclosing' 62"the tubular member-61 is`y formed v with an undercut annular y-groovef' ,in vv'yhichfis l gage thellange 58jof a Sxb'eins slightly-ta eat againstt-heftlllge 4GO aid *forming va.V

which the tubular member 61 constitutes ak part.

Inside the pump casing 5l isa lining 69 lodged between the ring 50 and the packing This lining 69 is preferably madeof a metallic composition consisting of cast iron particles and Babbitt metal. The foot valve is carried by a casing 70 of a size to fit snugly into the lining 69 and threaded at the lower-end on to an appropriate portieri of the cage 64. At a point above the cage 64 the casing 7() is provided with an internal ledge 71 and at the other end the easing 70 is internally threaded for the reception of a sleeve 72 between which and the ledge 7l there is lodged a lining 7-3 which, like the 'lining G9, may be composed of iron particles and Babbitt metal, which lining is held in place by the ledge 71 and the collar 72, re- 0 spectively. \Vithin the lining 73 is a plunger body 74 in the term of a. tube threaded at the upper end to receive a coupling 75 provided with an external flange 76, this couplingr being externally threaded at each end. The end of the coupling 75 remote from the plungerbody 74 receives a4 thread` ed ring 77 forming the base of a. cage 78 for a ball valve it) constituting the plunger valve, and between the collar 75 and. the ring 77 there is confined a valve seat 80 for said responding end of a pump rod QI valve 7.9. The end of the cage 78 remote from the ring 77 is termed with a threaded stud S1 in turn receiving the coupling member SQ. which latter yin turn receives the cor- The lin` mg 73 constitutes a substantially/anti-frictirni bearing for the plungei-and'this composition lining :will wcar for a long time without leakage. Since it may at times be desirable 40 to remove the casing 70 with its lining 73 andthe toot valve with it, the lining 69, while renderingrtle connections tight will not interfere materially `with the withdrawal of the foot valve, and the casing carrying the saine, but the normal frietional engagement of the part-s is sutiicient'to maintain the several parts in place during the action of the plunger. l l

In the str iuftureshown in Fig. .1 thelining where receiving the plunger is made up ot' comparatively small alined sections. 111.

Fig.. 12 the structure is similar except that the outer casing indicated at 84 has a lining made up of numerous sectlons 85, 86, and 87 in recurring series with each. section S5 o cast iron, each section S6 ofa composition ot .cast iron particles and Babbitt metal and the section 87 of .Babbitt metal, the lining being made ot'a scrics'of such groups. This ar-r (iorangement is foundA to be well adapted for the purpose for the same reasons stated with' reference to thel sectional lining of 4Fig/1f' and'has the 'further'advantage that t'lcv lpluni y ger is less liable to stick or freeze to the 66 wearing surface than' in the "ase where the with reference to the other forms, such unf seating and cleaning means may be y provided, or the valve` structure shown in Fig. 11 may be'replaced by the valve structure of Figs. l, 3 `and 4. It will be further understood that the castiron"particles of the ,lining composition may be vreplaced by other iron particles or by steel particles, and by the term liron particles it is intended to include steel particles. It will also be nuder- I vstood that the linings of Figs. 1l and 12 may be held inl place in the same manner as described with relation to Fig. l, `this simply necessitating the appropriate reduction in external diameter ot the lining sections.

Froml the foregoing description, taken in connection with the accompanying ldrawings, the advantages of; theeonstrnction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and While l have described theprinciple of operation of the invention, together with the apparatus which I new consider to be tbe best embodi ment thereof, I desire to have it understood that the apparatus shown is merely; illustrative, and thatl such changes mayY be made when desired as are within the scope ol the stroke.

L2. In a pump, the combination of a barrel, a foot valve therein including a ball` .a plunger. anda ball cleaning and nnsc'ating device disposed between the foot.l valve and plunger inthe path yof and in position to be moved `into operation by the .latter during its working stroke, said device including spring fingers for wipingy andl gripping the ball. i

' 3. In 'a pump, the combination of a bar- Vrel,=a` :foot 'valve mounted therein including 'a ball. a plunger above the foot valve and agripping device movable intogrippingrelation to the ball by the plunger to unseat the ball during the upstrokelofthe plunger,A

into engagement with vt said grippingdevice being in the path of the plunger and in position vto be operated thereby' during the working-stroke of Asaid plunger.

4. In a pump, the combination of a barrel,` a foot valve mounted therein including a bodily-'movable element, aplunger mountn ed in the barrel, and means in the path of and in position to be automatically.' operated by the normal movement of the plunger for engaging the element to free the sainefrom.

d uring the downward movement of the plunger and for raising the element during "the upward movement of the plunger;

5; In a pump, the combination of abari'el, a foot valve therein including a bodily movable ball, a cage for holding vthe ball in cooperative relation with the seat, asplung'er,v

and a balLcleaning and unseating devicebe tween the cage an of and in position to be set into opera-tion by the. latter. within the range oil" 'its`workingw stroke. 6. In a pump, the combination of a barrel, a foot valve therein including a'ball, a-

plunger, a ball cleaning and unseating-device disposed between the valve and plunger in the path of and in p osition to be moved ger during its-:' Anoripal dcwn'stroke, and means operatingi'on the device to unseat the valve during the normal upstrolie of the plunger.

l. vice including spring stroke of the plunger, and a' spring forunseating the lelement and releasing the -fin ers therefrom during the upstroke ofthe p unrel, a foot valve'therein including a'ball, a

cage for ,thejbalha'rod secured to the cage 11i,

S. In a pumppthe 'combination a ybarrel; a foot valve therein including a ball, a

seat with which the ball-engages, and a cage or the ball; a plunger in the barrel; Ladevice dispcsedbetween the-valve and plufiiger in the path of and in position 4to be operated by the plunger vduring the Working stroke thereof, saidl devicei'ncluding members movablc'into engagement with the ball by each normal descent of the plunger; and a spring acting through the device for first unseating the ball and finally releasing the.. members from the ball as the plunger ascender. y

9. In a pump,-the combination of a barrel, aV foot valve 'therein including y a ball, a plunger, a iixed abutment between the plun- ,ger and ball, and-a reciprocatorydevice between the plunger and-valve for .gripping the ball, said device being located4 in the path .of and in position to be o era'tedby the plunger during each normal owi'istroke plunger and in the path' e valve by the. p lunof the plunger and" forf unseating therball and' moving itl into ei'igagement` with the abutment to release tlie device from' the ball as the plunger inoves upwardly.'

ll0. ln a pump, the combination of a barrel, a foot valve-therein including a bodily movable element, a plunger incuntedin the barrel, ,a cageY for the element, an unseating and cleaning device for the element includf ing a fhead, and a plurality spring fingers movable'into engagement with the element;

'by-the plunger pushing the head toward the element end 'a spring arranged 1to move the. said device in a" directionjffor unseating vand releasing the element upon the reverse 30- operative relation `with itsfsa't, af'plunger 'g54 the barrel, a fixed -rod on theca e extend-y ing toward the", plunger, af hea 'i movable along the rod asa guide, sprin "n'gers `on.4

lthefheacl having. their free'en sarrnged A lto grip tliefball when the headiis de' ressedgu ungr-^f ,upon engagement therewith by ythe fp anda sp1-'ing' interposed-betweenit e' hea j and 'cage for-unseating the ball tli'rough,the

'fingers 4and releasing the s n ers* fromfthejball after the lat-terdsun'seate 9`l5 relVafoot va/lve therein includingia halbe cage for-the ball, a rod-secured Ito 'the cage and extending. upwardly therefrom, a pln-*Q-f, ger inl the barrel, an, unseating 'and-cleaning ino l device'for the ball mounted vfor reciprocation. onlv the rod and located in the path ofv and in position tobe operated by the plunfger ydui-ing its working stroke', to be -de. pressed 4thereby to engage v the ball,l and" .2103 .spring operating 'on the-,device .to unseatand release the ball as 'the plunger ri'ses.-

13.1Ina pump, the combination of a barand extending'upwardly therefrom, a..pli in yger in thel barrel, an unseatiug and cleaning device ffor the 'ball lmounted for reciprocatioii on the-rod and adapted to be depressed.'

by the plunger to engage the ball, aspring 115 I' 'operatingon the device `touuseat andjrelease' the ball as the plunger rises, saidide-v vice` including a. head with which lthe p1un-` ger engages, and a pluralityjof depending;y

springfingers,havin"v their upperQendsr seg-120 ends free I operated by the plunger during its normal" '130 stroke into engagement with the valve as the plunger descends, said device being guided by the rod, and means acting through the device for first unseating the.

rel, a valve therein, a seat for the valve, a

plunger, a fixed abutment between the seatand plunger for limit-ing the opening movement of the valve, and a valve cleaning and unseating device. in the path 'of and in position to be actuatedby the plunger during the working stroke thereof into engagement with the valve when the plunger moves in one direction, and for automatic release from the valve by the engagement thereof with the abutment-.when the in the opposite direction. v

16. In a pump, the combination of a barrel,fa ball valve therein, a seat for the valve, t cage for holding the valvein coperative relation with the seat, a lunger, a valve unseating and cleaning dlevice arramged between the valve and plunger and including spring fingers movable into engagement with the valve as the plunger descends,` and a ctnpression spring disposed between the plunger moves fingers and bearing-against the cage for raising the fingers and valve together and finally releasing the fingers from the valve during the ascent of the plunger.

17. In a pump, the combination of a. barrel, a valve therein, a seat for the valve, `a cage for holdingihe'valve in cooperative relation with the seat, a plurality offspring fingers having their free ends tensioned invvrdly towardeach; other and adapted to bei` sprung apartfto receive the valve between them, said fingers being arranged to be depressed by the plunger, and means for moving the lingers in a direction' to first unseat 'the valve and thenrelease the fingers from the valve as the plunger rises.

18. In a pump, the combination of abarrel, a valve therein, a seat for the valve,,"a cage kfor holding the valve in cooperative relation with theseat, a plurality of spring fingers having their free ends tensioned in- `wardly toward eacli other and adapted to spring outwardly to receive the valve between them,lsaid lingers being arranged to be depressed by the plunger, and a spring' arranged to be tensioned as the plunger descends .for moving the fingers in a direction to first unseat the valve ,and then release the fingers from the valve.` l

19. In a pump, the combination of a barrel,.a shoe at the lower end thereof having an lnternal seat, a hollow foot valve body with a cylindrical exterior of even diameter throughout and provided with a contracted extensionv atits lower'end entering the shoe, said extension having a tapering packing -ring lodgedin the exterior wall thereof for engaging the seat,and packing inI the barrel above the shoe lfor engaging the cylindrlcal portion of the foot valve body when the .packing ring on the extension is in engage! vengaging the seat, and packing in the barrel above the shoe for engagingthe cylindrical portion `of the foot valve body when` the packing ring on the extension is in engagement with the seat, the barrel being provided with an interior lining between one end of which and the shoe the packing is confined. f .21. In a pump, the combination of a barrel, a shoe at the lower end thereof having 3 an internal seat, a hollow footvalve body :having a cylindrical exterior ofl even dialneter and provided with a contracted extension entering the shoe and having a peripheral groove vformed therein, a tapering metallic packing ring Within the groovefor .engag- :ing the seat, and packingin the barrel above the shoe for engaging around the cylindrical portion of the foot valve body.

22. In a pump, the combination-fof a barrel having an internal seat at its ylower end, a h'ollow cylindrical foot valve body having its lower end contracted and `formed with-an annular grooveadjacent the seat, a tapering packing ring seated in the groove and of less diameter than the body for wedging A downwardly on the sea-t, said body having a contracted extension on its upper end, a valve seat carried on the extension, acage secured to the said extension and serving to hold the seat in place, and a valve larranged to engage the seat and held in coperative relation therewith by the cage.

23. In a pump, the combination of a barrel, a plunger therein, a valve seat carried by the upper end of the plunger, a cage secured to the plunger for holding the valve in cooperative yrelation with the seat. a sucker rod connected with the cage, and a valve cleaning means in position to be en gagedby the valve during the Working stroke oit' the plunger.

24. In a pump, the'combination of a barrel, a plunger therein, a seat carried by the plunger, a valve arranged to engage the seat, and a fixed rod extending through the plunger and supported below the same'withstroke' of the plunger for unseating the valve .as the' plunger descends.

25J-ln a pump, the combination of a barrel, a plunger therein, a seatv carried by the plunger, a valve arranged Ato engage the seat, a fixed rod extending through. the plunger and supportedbelo'w the .same for unseating th'e valve as the plunger descends, and a yielding abutment with which. the valve engages lwhen inopenposition.

26. In a pump, the combination of a bar-- i.. rel, a plunger therein, a valve seatk carried cage for `the valve, a rod extending through 2o venga within the cage witl'w 1 'opening movement, an

'by the plunger, a valve arranged to .engage the seat, acage for the valve, a fixed device for' unseating the valve -as the plunger descends, and a yieldin abutment d1sposed ich the ball engages when inbpenposition. l27. K'In a puinp, the combinatie of a barrel, aplunger therein, a seat car 'ed by the plunger, avalve for engaging the seat, a

vthe plun 'er with its upper end dipposed to t evalve for unseating ,th same as the p anger descends, an abutmendisposed over the valve to be en agedr there y 1n its A a spring arranged `to permit the abutment to yield upwrdl 'i 28. VIn a pump, the combination of,` a garrel, al., plunger therein, a valve for closin i the upper end ofthe plunger,'a sucker ro a connector between the rod and cage and ten opens.-

i Jplfunger during the upstro te and arranfgged4 p to a connection between the rod and plunger, a`

butler disposed-.above the valve for erigagement therewith, and a spring for urging thelbufer downwardly toward the valve, saidy buffer `being spaced from the valve when 'the latter-is. seated. 1 i

`29. In a pump, the combination oa plunger, a cage on the upper end thereofa valve for"cl osing theplunger, a sucker rod,

having 'achambena Spring in the chamber, and a buffer -pressed by the spring and disposed to be engaged by the valve as the lat- 30. The ncombinatimt of'a hollow plunger, a"tixed*rod'extending through the dplunger, a valve for closing the u per4 en i offthe be unseated by the rod during thedownstroke, a cage -for the valve having a tubular hub, a'sucker rod, aI connectorl between-the sucker ,lqllgvald cage, 4a stern extending throughl the. tubular. Vhub and carrying an abutment with which the valve engages, and

a spring on tlieeonnector for pressing' the stem downwardly toward the valve.`

from.

31. In a pump, the combination of a ,bar

rel, a plunger therein, afoot valveinclude:`

ing a ball, a working valve including a ball;

and separate devices each located to engage A the balls within. the range of the nor'mal stroke of the plunger for positively unseatf' ing the balls4 and normally disengzgaged4 there- .32. In a pump, the combination ofA a barrel, a sucker rod, a plunger' rigidly connected therewith, a ball valve for closing the tioned within the lran e ofV the norr'ralstrb stroke of 'the lunger, a foot valve, spring-aetuate device laced under tensigjxs after the plungretarts upwardly andthe 'working valve is seated, both vdevices being.'

upper end vof the plunger, auixed-dfeviee the barrel for unseating the ball,a foot'valveT including a ball, and a movable dev ioep of and operated'by t e plunger :for ulseag ing the foot valve ball. v 33. In 'a pump, the combinati'on-ola-` ,n rel, a plunger thereinaworlting valved posed above the plunger andin'cludin movable elenientfor opening and fclos the upper end of lthe plunger, a foot v =l disposed under-the'plungervincluding amo able element -forl controlling;l the-` titi through the foot valve, and separate meansv positioned within the range" ofjnovement of the normal stroke of the p lim'gerfbrun seating the said elements "automatieallyrbv the Working reciprocation of the-plunge 34. In. a pump, the eomb'nationof 'abivr rel, a plunger therein, a'wo'rking vitlye'f opening andclosng the up' 'fr-jeudi of plunger, a foot valve, and a' e eaning'andun seating device` for thefootvalve movable into engagement'with the latter'by tle-plun.- ger. and arranged tenutomatically unseat the latter after the plungerascends andthe i workingvalve is seated, both'devices being pos'itioned to be operated by the plungerA durin its working strolre.v 1' p j 35. n a pump, the combination of a ba e, rel, a plunger therein, a workin-g .valve fOl" opening and closing the'upperl'endof-ithe plunger, means for holding the valverf' its,seat during the. initial part of the `u fao bythe descent of the p unger and arran' to act automatically to unseat the foot va 11de within the range of the working xnovementfA y of the plunger. 1 f A36'. In a pump, thecombination'jof a .bare` rel, a hollow plunger.' thereixn'j ayw'rkin'g valve for closing the upper endofthefplun ger, a foot valve device anchored inI th bottom of the barrel, and a rod supported,- -n and fast to the device and. attending-flip@ 'fwardly throughv4 the plun r ud-terrnxnat-v ving in the path of the va ve "the normal 1&5 working gdownstroke ofvgth' lun rf'f positively unseating the workingva' 37. In a pump,the combination-.of rel,a hollow plunger there :wprki valve -for closing the upper und ger, a foot valve device l allah, tom of the barrel, a rod sup b, fast to the device and ,extendin' through the plunger and teri path ofthe'valv'e' on the n downstroke of the plunger; or unseating` the working valve" n tl af valvle'f'.'`-r unseating and cleaning device guided onpthep rod 'and disposed. under the plunger to' "i operated thereby. 1&0 e

38A In a pump, the combination of a barrrel, u plunger' therein, a working): valve arranged to be seated by the movement of the plunger into engagement therewith during the initial part ofthe normal upstroke of the plunger, a foot valve under the plunger,

' a cleaning and unseating device for the foot valve arranged under the plunger Within the range of the normal stroke of .the

letter to he moved into engagement with the valve thereby, and :L means operating on the device for unseuting the valve and releasing the device therefrom after the plunger has moved 'through the initial part of its stroke to seat the Working valve.

39; ln :L pump, the combination of a bar-` rel, a foot valve therefor, a plunger, end a In testimonv, thetiIl claim the foregoing as my own, I have hereto axed my signature in the` presence of two Wltnesses.

CLARENCE L. PARKER.

Witnesses N. D. EUsTIs, T. W. EUsrIs.

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