US1522075A - Oil-well pump - Google Patents

Description

Jan, 6, 1925.

J. PENROD ET AL OIL WELL PUMP Filed May 4. 1925 '(25% lo o vATTORNE YS IN VEN TOR Pezzi D. 7M

1,522,075 J. PENROD ET'AL ou WELL PUMP Filed Mly 4, 1925 s sheets-sheet 2 Jan. 5, 19

7 /ZOQZ WITNESSES Jan, 6, 1925,

J. PENROD ET AL OIL WELL PUMP Filed May 4, 1923 WITNESSES 3 Sheets-Sheet 5 f ment for 'Wells and one of the Patented Jan. 6, 1925.

Stmas pATET F'FIC' JOHN rnimon AND 'ROBERT n. THOMPSON, or OKMULGEE, oxLAHoMA.

- OIL- WELL PUMP.

Application `filed May 4, 1923. Serial No. 836,681.

given size of tubing.

In the standard equipment it is necessary` to move the plunger and associated parts downwardly `through the tubing and into the working barrel where the pumping operation takes place. Therefore, the diameter of the plunger is limited by the` diameter of the tubing and thus the diameter of the tubing controls the of the equipment.

ln accordance with this invention the plunger is attached to the lower portion of the tubing and does not move through the tubing so that the diameter of the plunger is not in any way regulated or limited by the diameter of the tubing.

A further object of the invention is to pro' vide simple and practically automatic means whereby the traveling valve upon being pumping capacity lowered through the tubing is clutched onto` the plunger so that the same will reciprocate together :is a unit, and, furthermore, the invention is provided lwith' simple means whereby the connection between the traveling valve and the plunger may be broken to permit of quie lremoval of the traveling valve and the standing valve carried thereby without removing the plunger.

Another object of the invention is to provide a novel form of sand arrester or collector by means of which settling sand is prevented from accumulating between the plunger and working barrel when the well is not in operation.

Other objects and advantages'will be apparent during the course of the following description..

In the accompanying drawings formin a part of this application and in which like numerals are employed lto designate like parts throughout the same,

Figure l is a vertical longitudinal sectional view thrugh the pumping equipment,

the Viewl illustrating the parts in the position they assume immediately after the introduction of the traveling and standing valves, y y Figure 2 is a detail sectional view illustrating the plunger, the clutching-on collar and the supporting means for the plungerin the positions theyoccupy when the traveling and standing valves are withdrawn.

Figure 3 is a longitudinal sectional view through the traveling and standing valves and the limited sliding connection between the traveling and standing valves.

Figures 4 and 4 illustrate a longitudinal sectional view through the pumping equipment, the parts being'in their pumping positions, and

Figures 5 and 5a illustrate a slight modification ofthe invention. y

In the drawings, wherein for the purpose of illustration is shown aA preferred embodiment of the invention, thenumeral 5 desi vnates a tubing which, as illustrated .1n

Figure 2, has its lower portion provided with a coupling` 6 to which a housing 7 is connected. Figure 2 plainly illustrates that the housing 7 consists of a pair of sections joined by means of a bushing 8 which projects into the casing and constitutes a stop, the function of which will be fully described.

The lower portion of the housing 7 is provided with a bushing 'l0 into which a section 11 of a somewhat reduced diameter is threaded and the lower portion of the section 11 is in turn provided with a bushing 12 into which the seat 14 for the standing valve is threaded. Of course the usual perforated inlet nipple 15 is threaded on the lower portion ofthe organization for the admission of the liquid to be pumped up when the sucker rod and the parts carried thereby are reciprocated. ,4

The working 4barrel 16 is threaded through the bushing 8 and it will be ,seen that the working barrel is not movable through the tubing but is suspended from the lower vend of the same through the. medium of the housing 7 and associated parts. The lower portion of the working barrel 16 has upper and lower packers 19 and 20, respectively, associated therewith,

which packers have a tensioning spring 22 larranged between the opposed sides of the drawn. More specifically, the upper portion of the plunger liner is provided with a slotted connecting member the upper portion of' which is provided with a clutch collar slottedv longitudinally to provide a plurality of arcuate gripping jaws 31'. The longitudinal slots 33 in the clutch collar deline ay plurality of arcuate sections capable of being moved inwardly into gripping engagement with the traveling valve when the latter is introduced into the* more :or less permanent pumping mechanism of the well equipment. y .A p

Referring again to thevyieldable supporting means `for the plunge-r or liner 25 1t will be seen that a spring 3 5 is confined between an annular member 36 and an inwardly pro-' jecting annulus orshoulder 37 on the inner side of what might be said toibe a bumper sleeve 38. When the traveling- Valve has been withdrawn fromthe Well, the bumper sleeve 38 rests upon the bushing 8 and the weight of the plunger and the clutching-on member which constitutes thearcuate sec tions 31 is transmitted through the spring to the housing 7.

It is thus seen that the 'liner clutch collar composed of the sections 31 are yieldingly supported and it 'is now pointed outthat the clutch collar composed of the sections 31 is-located Within an outer clutch collar 40. The upper end of the clutch collar 40 is provided with a contact annulus 44 which extends into the tapered bore of the collar 40. Figure 2 illustrates that when the permanent parts of the equipment are in their respective positions the contact annulus 44 engages'the upper end of the inner cl'utch collar so that the collar 40 is supported by the inner collar.

However, as the traveling valve is introduced into the well and into plunger liner 25 and the 25, an annular shoulder on the same con-y tacts with yan internal annular shoulder 51 on the connecting member 30 of the liner. Therefore, the weight of the traveling valve and the sucker rod, is now transmitted to the liner so that the tension of the coil spring 35 is overcome and the arcuate sections 31 are moved downwardly in lthe outer collar 40 and contracted firmly into engagement with the exteriorly tapered portion 54 of the traveling valve. `When the arcuate sections 31 are thus engaged withvthe travysuspending the plunger liner 25 lwith-v to `aminimum.

Maaate cling valve, the traveling valve and the liner move together `as a unit during the reciprocation of the sucker rod 57.

`In other words the liner and the upper and lower traveling valves cooperate in the formation of a plunger.:

It isfobvious that the traveling valve consists off upper and lower valves 58 and 5i) respectively, which cooperate' to prevent the return of the liquid and thesame are of course provided with vthe usual seats held securely in place. Rings 60 surround the lower portion of the traveling valve and contact with the inner side of the liner to provide a liquid-tight connection between the liner and the traveling valve. By means of this,ywaste energy inv pumping is reduced lBefore proceedin to describe the standing `valve' and associated parts it is desired to describe the means for preventing sand from settling between the plunger and thel workingbarrel when the well equipment is not' in operation. The annular contact member 44 cooperates with the inwardly beveled upperA ends of .the sections 31 in forming an annular sand receiver by means of which the settling of sand between -the plunger and the working barrel is pre'- vented. y

Each arcuate section 31, and more speciiically, the beveled upper end of the same, is provided with a ap which extends over the upper end of the adjacent slot 33 and thereby prevents sand from passing through the slot. Therefore, when the pumping apparatus is not in`r operation, the settling sand will collect on the sections 3l and the contact menber 44 and when pu1nping'is resumed the sediment will be taken up with the liquid. f

The standing valve is indicated by the numeral 70 and yhas its lower end provided and the nipple. The lodging of sand between the attaching portion 72 and thc nipple would ossibly cause the attaching portion to stlc when it is=desired to withdraw vthe standing and traveling valves for replacement or other purposes. rlhe bushing 12 is provided with an inwardly extending annular shoulder 76 with which the lower end of the attaching portion 72 flatly contacts. y

Figure 3 illustrates that the standing valve is suspended from the'traveling valve and the same are introduced into the well tollo gether. The connection between the standing and traveling valves consistsof inner and outer slidably connected sections 8O and 81 respectively, the outer section being provided with a closure or stop member 82 arranged in the path oftrav'el of the head 84 of the section 80 so that the movement of the'valves with relation to each other is limited.

However, it is important to note that the stroke of the traveling valve is less than the length of the tubular section 81 so that during the normal reciprocation ofthe traveling valve the standing i-'alvewnill not be unseated.

lVhen the traveling and standing valves are introduced into the Well, the tapered attaching portion 72 will be received Within the nipple 14 and the head 84 will contact with a spring 88 to rmly seat the attaching portion 72.

Figure 4l illustrates that the spring 88 is mounted upon a series of inwardly projecting lugs 90 located within the upper portion of the standing valve 70.

In use, theI housing 7 is suspended from i the tubing 5 and the working barrel 16 is,

' the formation of As brought out in the objects of the in of course, mounted within the housing and is supported in the manner illustrated in Figure 1, which figure illustrates that the packing members 19 and 20 cooperate with and form what might be said to be a portion of the working barrel.

As illustrated in Figure 2, the lower end of the outer collar 40 is spaced above the bumper sleeve 38 and when the travelin valve is introduced, the outer'collar 40 wi l contact with the bumpersleeve 38 and be stopped thereby..` The inner collar will con-y tinue to move downwardly until the same is firmly gripped with the traveling valve. 0f course, this is brought about by the engagement of the shoulder with the shoulder 51 and the consequent transmission of the weight of the traveling valve and sucker rod through the liner 25 and the spring 35.

The tapered attaching ortion 72 is snugly received in the nip e 14 and as, previously statedl the ring g4 provides a means to exclude sand from between the attaching portion and the nipple and also serves to prevent the return of the lui As the traveling valve continues to move downwardly, subsequent to the seating of the standing valve, the section 80 will move into the tubular section 81 and when the head 84 is engaged with the spring 88, the

attaching portion 72 is more firmly seated.

As the arcuatesections 31 are now securely clutched onto the traveling valve 54. the reciprocation of the sucker rod will cause the liner 25 to operate with the traveling valve and cooperate with the same in a plunger.

vention, a pump constructed in accordance with this invention, has a large capacity in. proportion to the diameter of the tubing 5. This is accounted for by the fact that the liner 25 does not have to pass through the tubing but is suspended from the lower end of the same. In fact. it will be seen that the diameter of the plunger' is greater than the diameter of the tubing and consequently the displacement is substantially increased.

When itis desired to remove the traveling valve and the standing valve, it is merely necessary to movethe sucker rod upwardly beyond the normal stroke so that thc annulus 44 will contact with the bushing 6 and this action will cause the arcuate sections to separate somewhat and thereby permit of the continued upward movement of the vtraveling valve and of the unseating of the standing valve. When the parts have been removed, the arcuate sections 31 are in position to again receive the detachable portions of the mechanism when returned to the well.

lt might be added that when the traveling valve is not in the well the parts occupy the position illustrated in Figure 2 wherein it is shown that the spring 35 supports the `liner and maintains the lower end of the outer clutch member 40 in spaced relation to the upper end of the bumper sleeve. When the traveling valve is introduced into the liner the shoulder 50 Will contact `with the shoulder 51 and move the liner downwardly against the pressure of the coiledspring 35. At this time the outer clutch section 40 will engage the vbumper sleeve 38 and furtherdownward movement of the outer clutch member 40 is prevented. However the inner clutch sectionsl continue to move downwardly and are drawn together -or are compressed into gripping engagement lUll with the tapered portion ofthe traveling "valve, this feature being clearly illustrated in Figure 1.

When it is desired to detach the traveling valve and withdraw the same, it is merely necessary to pull 'upwardly on the traveling valve so that. the contact member 44 will engage the coupling 6 and the clutch sections 31 will continue to move upwardly until they occupy the position illustrated lin Figure 2. This therefore releases `the clutch sections 31 from engagement with the traveling valve so that the traveling valve will be permitted to be withdrawn.

Attention is directed to the fact that .as the traveling valve is withdrawn from the Well the clutch sections and the liner automatically resume their respective positions so that when the traveling valve is again in- In the modiied form of the invention illustrated in Figures and 5, the sucker rod 100 supportsa single traveling valve 101, the lower portion oi which is exteriorly tapered for engagement by a plurality ot arcuate sections 102 which cooperate with a clutch collar 103. That is to say, the arcuate sections 102 are exteriorly tapered and the bore of the clutch collar 103 is oppositely tapered so that the weight of the sucker rod and the working bairel 104 will pull the arcuate sections downwardly and inwardly firmly into" gripping engagement with the cage of the single traveling valve. Figure 5n illustrates that the lower portion of the working barrel 104 is mounted upon a spring 106 sufficiently strong to support the weight of the plunger when the single traveling valve is removed. However, when the single traveling valve and-.the sucker rod are introduced into the wellthe weight ot. the sucker rod and traveling valve is transmittedfthrough the plunger and the spring 106 so that4 the arcuate sections 102'; connected to the plunger, are forcibly moved down wardly. y

In this form of the invention, the standing valve 107 is permanently secured to a lower bushing 108 and is not removable with the single traveling valve. Also the lower traveling valve 110 is fixed within the upper portion of the plunger 104 and is separate and apa-rt from the upper traveling valve so that it remains within the well when the upper traveling valve is removed.

When it is desired to repair the upper traveling valve 101, it is merely necessary to pull upwardly` beyond the normal stroke of the suckerV rod and' the arcuate sections 102 will be released from gripping engagement with the tapered portion of the traveling valve. This is brought about by the engagement ot Vthe head 112 with a bushing 114 between the housing 115 and the tubing 116.

When the traveling valve has been removed the parts are again in position to receive the traveling valve after the necessary repairs or replacements have been made.

ln summarizing, it will be seen that the -invention is provided with a liner which is not in any way restricted as to diameter with relation to the diameter ot the tubing. This is true because the liner is permanently suspended below the tubing and is not passed through the tubing with the traveling and standing valves.

By permanently suspending the liner 25 below the tubing the external diameter of the traveling valve may be almost as great as the internal diameter ot the tubing and this allows large valves and large valve cages to be employed. The substantial increase in the size of the ball valves and the cages therefor brings about a. substantial increase in production and it will be seen that the various passages and by-passes for the oil are very generous.

Attention is directed to the tact that the various parts ot the mechanism are not merely enlarged to bring about a Corresponding increase in production as the tubing which is one of the most expensive elements in the organization remains ot a small diameter while the production is substantially increased. i

It will be se'en that the cost ot placing the oil in the' tank will be greatly lessened as it is not necessary to increase the tubing diameter` to bring 'about a substantial increase in production.

With reference to Figure 4. it will be seen that the shoulder and the shoulder 51 flatly contact with each other so as to form a seal which prevents the return of the oil. In this manner they cooperate with the rings which bear against theinner wall of the bushing 52.

1. 1n a pumping mechanism, a tubing, a liner yieldingly supported beneath the tubing, and a traveling valve movable into the 'liner, there being means to grip the traveling valve ito the liner whereby the traveling valve cooperates with the liner in the formation ot a plunger.

2. In a pumping mechanism, a tubing, 'a liner permanently and yieldingly suspended beneath the tubing, and a traveling valve movable through the tubing and-into the liner, there being means to. detachably connect the traveling valve to the liner whereby the traveling valve cooperates with the liner 'in the formation of a plunger, the traveling valve being removable through the tubing independently of the liner.

3. An oil well pump comprising a tubing, a liner permanently and yieldingly suspended below` the tubing and being of a greater diameter than the diameter ot' the tubing, 'a traveling valve movable through the tubing and into'the liner, and a clutching-on mechanism adapted for connecting the liner to the traveling valve whereby the traveling valve cooperates with the liner in the formation of a plunger.

4. A pumping mechanism for wells comprising a tubing, a. tixed workingbarrel suspended below the tubing, a liner yieldingly mounted within the working barrel and be- Aing permanently located beneath the tubing, and a traveling valve rmovable through the tubing, there being means to detachably connect thetraveling valve to the liner whereby the liner and the traveling valve cooperate in the formation of a plunger.

5. A-pumping mechanism for wells comprising a. tubing, a fixed working barrel suspended below the tubing. a liner yieldingly within the working barrel and being permanently located beneath the tubing, a

Y traveling and valve movable through the tubing, there being means to detachably connect the traveling valve to the liner whereby the liner and the traveling 'valve cooperate in the formation of a plunger, and 'a housing suspended from the tubing and receiving the ,Working barrel and the plunger.

6. Ina large capacity pump, the combination of a tubing, a liner permanently and yieldably supported below the tubing,

a traveling valve movable through the tubing and adaptedto be received within the liner, a clutching mechanism forconnecting the traveling valve to the liner and consist- Iing of an inner compressible traveling valve vengagmg lsection andan outer compressing section, and a standing vvalve suspended froml the traveling valve.

Ina large capacity pump, the combination of a tubing, a liner permanently and yieldably supported below the tubing, a traveling valve movable through the tubing and adapted to be received within the liner, a clutchinfr mechanism for connecting the traveling vaIve to the liner whereby thc two reciprocate together and 'cooperate in the formation of a plun er, and a standing valve suspended from t e traveling valve, the liner diameter being independent of the internal diameter of the tubing whereby the liner has a large displacement in comparison to the internal diameter of the tubing, said clutching mechanism consisting of` an inner traveling valve gripping member and an outer member for compressing the inner member. t

8. A pumping mechanism for wells comprising a tubin ahousing suspended from the tubing an having a stop member,` a iner arranged within. the housing, a bumper sleeve surrounding the liner and having a shoulder, a spring mounted on the shoulder and yieldably supporting the liner, co-acting clutch members mounted on the upper portion of theliner, and a traveling valve movable through the tubing and adapted to be received within the liner, said clutch members being ada ted to secure the travcling valvel to the hner whereby the traveling valve and the liner reciprocate together andl cooperate in the formation of a lunger.

'9. A pum ing mechanism for w'e 1s comprisin a tu ing, a housing suspended from the tu ing and havinlg a stop member, a liner arranged within t e housing, a bumper sleeve surrounding the liner and having a shoulder, a spring mounted on the shoulder yieldably supporting the liner, co-acting clutch members mounted on the upper portion of the liner, a'travelmg valve movable through the tubing and adapted to be received wlthin the liner, said clutch members being adapted to secure the traveling valve to the liner whereby the traveling valve and the liner reciprocate together and vworking barrel secured -a bumper sleeve surrounding the working plunger suspended froml the:

through the tubing and adapted tol be received within the liner,'said clutch members being adapted to secure the traveling valve to the liner whereby the ,traveling valve' and the liner reciprocate together and cooperate in the formation of -a lunger, a standing valve suspended from t e traveling valve, and a packing arranged beneath the working barrel and within the housing.

a spring mount- 11. A pumping mechanism for wells comprising a housing having a step member, a

barrel, a liner received barrel and yieldably supported by the bumper sleeve, coactingv clutchmembers se'- cured to the liner and consisting of inner and outer bodies, the opposed sides of which are correspondingly tapered, and a traveling valve having a tapered portion adapted to be gripped by the inner clutch member.

In a Huid combination of coacting clutch members, one of ,which consists of a series of arcuate gripwithin the working ping jaws having their opposed edges 1n spaced relation, and flaps extendin over the space between the opposed edges o? the jaws to exclude sand in the Huid.

13. In a fluid pumping mechanism for. wells, the combination of a clutch member consisting of a plurality of varcuate sections havingA their vopposed edges arranged in spaced relation, and means extending over the space between the said sections to exclude sand in the iuid, and means whereby to draw said'sections inwardly.

14. In a pumpin mechanism forv wells, the combination wit a tubing, of a bushing connected to the tubing, a housing connected to the bushing, a working barrel fixed within the housing, a liner movablein the working barrel-and having its upper portions formed with inner andV outer clutch members, the inner member consisting of ak plurality of arcuate-sections, and a `traveling valve having a ta ered portion adapted to be gripped by sai ,arcuate sections.

1 In a pumping mechanism for Wells, the combination with a tubing, of a bushing connected to the tubing, a housing connected to the bushing, a working barrel xed'within the housing, a liner movable in the Working barrel and having its upper portions formed with inner and outer clutch within the housing,

pumping mechanism, the

lurality of sections, a traveling valve having a tapered portion adapted to be gripped '.prising a housing,

by said`sections, the opposed sidesof said inner and outer clutch members being lcorrespondingly tapered.

16.l lin. a pumping mechanism for wells,

the combination of a tubing, a bushing suspended from the same, a housing connected tothe bushing, a working barrel iiXed within the housing and provided with packers at the lower ends thereof, a liner received within the working barrel and having its upperl portion formed with co-acting clutch members, one of which is adaptedfto be engaged by Said bushing to separate the sections from locking engagement with each other, .a bumper sleeve arranged within the housing and yieldably supporting the liner, said housing being provided with a stop 1nember upon which saidbumper sleeve rests,

and a nipple secured in the lower portion of the housin and adapted for the reception of'` the attac ing portion of a standing valve. a

17. A pumping mechanism for wells coma working barrel secured Within the housing, a plurality of packers secured at the lower portion ofthe working barrel, a liner received in the working barrel and extending beyond the ends there of, a traveling valve movable into said liner, said traveling valve and said liner being provided with coacting shoulders by-means of which the liner is lowered lwhen fthe travelin valve enters the liner, and a clutchin mec anism for connecting the traveling `va ve tothe liner.

.18. A pumping mechanism 'for wellsrcom rising a housin a` Working barrel secured within the houslng, a plurality of packers secured ,at the lower portion of the working barrel, a liner received `in the working barrel, atraveling valve movable in` said liner, said travelingvalve and said liner being provided with coacting shoulders by means of which the liner is lowered when n the traveling valve enters the liner, a clutching mechanism for connecting the traveling valve to said liner, and a standing valve having a limited sliding connection with said traveling valve and suspended therefrom.

19. In a' pumping mechanism, the combination of a housing having a nipple, a traveling valve received within the housing, a standing valve suspended below the traveling valve and having a limited sliding connection, the limited sliding connection consistingof telescoping members having their' ends provided with Contact members, and a spring received within the outer member and arrangediin the path of travel of one of the contact memberswhereby the contact inember compresses the spring and urges the magere traveling valve into said nipple on the downward movement of the traveling valve.

the liner and having slots defining a plurality of gripping members. and a` clutch collar receiving the body and having means to urge the body into gripping engagement with a traveling valve. Y

21. A pumping mechanism comprising a liner, a body mounted on the liner and having a pluralityv of gripping members., a clutch collar receiving the body and having means to urge the body into ripping engagement with a traveling va vve whereby they valve and the liner are reciprocated together, said clutch collar being provided with a Contact member in thepath of travel of said body whereby the engagement of the body with the contact member releases said gripping members from engagementV with the traveling valve.

22. A pumping mechanism comprising a body having a series of arcuate gripping members, a vclutch collar surrounding the gripping members, the opposed sides of the gripping members and the collar being oppositely tapered whereby the downward movement of the gripping members in the collar urges the gripping members inwardly.

23. A pumping mechanism comprising a body having a series of gripping members, a clutch collar'surrounding the gripping members, the opposed sides of the gripping members and the vcollar being oppositely tapered kwhereby `the downward vmovement ofthe gripping members in the collar urges the gripping members into engagement with a traveling valve, and a striking' element arranged in the path of travel of said collar and adapted to release the collar from gripping engagement with the body whereby the body is released from engagement with the traveling valve to permit of the free removal of the traveling valve.

24. A pumping mechanism comprising a tubing, a liner suspended from the tubing and having a body provided withk gripping members, a clutch collar receiving the gripping members, a traveling valve movable through the body, the opposed sides of said traveling valve and said body being oppositely tapered, said collar being adapted to urge said gripping members firmly into engagementwith the tapered portion oi the travelingivalve, there being means in the path of travel of said collar to release the collar from gripping' engagement with the l a'stop, a workin yieldingly supported within the housingfand having a clutch body, a clutch collar receiving said body, a traveling .valve movable through the body,rsaid collar being adapted to move the body inwardly into gripping engagement with the traveling valve whereby to rigidly connect the traveling valve to the liner, said collar being adapted to eni gage said bushing when the traveling valve is moved upwardly beyond a predetermined distance to release the body from Agripping engagement with the traveling valve whereby the traveling valve is separated from theclutch of the traveling valve is borne bythe' liner and whereby the two shoulders form a A' liquid seal.

27. A pumping mechanism' comprisin a liner having a connectingbushing provi ed with a shoulder, and a travelin valve movable through the connecting ushing and having a shoulder adapted to flatly contact 'with the first named shoulder whereby the clutch of the traveling valve is borne bythe liner and whereby the two shoulders form a liquid seal, and packers confined between the traveling valve and the bushing andcooperating. with .said shoulders in providing a liquid seal. y l i v 28. A pump comprising a housing having barrelin the housing, "a liner received init 'eworking barrel, a clutch carried b member or operating said clutch, said stop being in the path of travel of said contact member and adaptedfor operating the same,

and means normally spacing said contactx member from said clutch.

- 29. A` pump com rising a housing having a stop, a working arrel in the housing, a

liner received ip the working barrel, a clutch carried b the `l member or operating said clutch,.said stop the liner, afliner carried contactiner, a liner carried contactbeing in the path of travel of said contact member and adapted for operating the same, and means normally. spacing said contact member from said clutch, said clutch consisting of inner gripping sections and an outer section'to move the inner sections to` operative position.

30. A pump comprising a traveling valve, A

a housing having a stop, a working barrel in the housing, a liner received in the vworking barrel, a clutchcarried by the liner, a liner carried contact member for operating said i `clutch5-said stop being in the path of travel of said contact member and adapted for operating the same, means normally spacing said contact member from'said clutch, said `clutch consisting of inner gripping sections and an outer section to move the inner sec'- tlons to operative position, `said traveling 'valve and said liner *being provided with coacting shoulders -bymeans of. which the Ytraveling valve is transmitted to teliner.- -w

'31. A pumping mechanism including a removable valve and comprising a liner, a sleeve surrounding the liner, a spring supported by said sleeve, and yieldingly sup- '.porting said liner, and means carried' bysaid liner :for gripping engagement with the re.

movable valve.

32. A pumping mechanism including a ren movable valve and comprising a liner, a-

sleeve surrounding the liner, a spring supported by said sleeve, and yieldingly supporting said liner and means carried b saidy linerfor gripping engagement with t e removable valve, said means being operated by said sleeve.

33. Apumpingmechanism forwells coml prising a traveling valve,` a liner having its upper portion provided with a traveling valve engaging clutch, means yieldingly supporting the liner, a housing receiving said liner and said means and having a coupling in the path of travel of and adapted tobe engaged by said clutch, anda working banrel` carried by said vhousing and: receiving lsaid liner.

\ Joniv rennen.'

ROBERT n. rnovsoN.. 1

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