US2968256A - Pump adapter - Google Patents

Description

Jan. 17, 1961 Q C, wlLLlAMs 2,968,256

PUMP ADAPTER Filed April 29, 1957 3 Sheets-Sheet 1 Jan- 17, 1961 c. c. WILLIAMS 2,968,256

PUMP ADAPTER Filed April 29, 1957 3 Sheets-Sheet 2 J0 T1Ei.2 T155 .J

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A Trop/vf Y Jan. 17, 1961 Filed April 29, 1957 C. C. WILLIAMS PUMP ADAPTER s shams-sheetl 5 IN VEN TOR.

` C2 /ffoye C? Mam/175 United States Patent() This invention relates to improvements in pump adapters for use inpwater Wells.

The primary object of the invention is to provide an adapter which ris readily applicable in a well casing at any selected level for sealed communication with an outlet opening.

A further object is to provide a pump adapter which can be used with pumps of different types, such as jet pumps, submersible motor pumps and reciprocating pumps. j

A further object is to provide a device of'this character which effects connection ywith an Aoutlet opening in a well casing and which does not span and close the well casing and. hence permits use of the entire casing as a pressure vessel or containerand permits extension past the adapter of parts which lead to sections of the pump below the level of the adapter.

A further object is vto provide an adapter which is positioned in desired elevation inawell `casing by a releasable wedge arrangement which is constructed to accommodate ready removal of the adapter and of the pump assembly for repair and replacement of parts.

A further object is to provide an adapter usable in well casings having different types of connections between the casing and an outlet pipe.

Other objects will be apparent from the following specification.. v

In the drawings:

Fig. 1 is a vertical sectional view of a well illustrating the use of myvadapter therein, the pump shown being the submersibley motor type, and the section line being taken on line 1-1 of Fig. 2;

Fig. 2 is a transverse sectional view taken on line 2 2 of Fig. 1;

Fig. 3 is an enlarged fragmentary vertical sectional view illustrating a modified construction of the adapter;

Fig. 4 is a fragmentary vertical sectional view illustrating a modified construction of a well casing accommodating my new pump adapter;

Fig. 5 is a fragmentary vertical sectional view of still another type of well casing accommodating my pump adapter, and taken von line 5--5 of Fig. 6;

Fig. 6 is a transverse sectional view taken on line 6-6 of Fig. 5;

Fig. 7 is a vertical sectional view taken on line 7-7 of Fig. 8, and illustrating the use of an adapter for a jet type of pump;

Fig. 8 is a transverse elevational view of the adapter shown in Fig. 7', as viewed from the right in Fig. 7;

Fig. 9 is a vertical sectional view taken on line 9-9 of Fig. 10, and illustrating a modified type of adapter support;

Fig. 10 is a top view of a well casing shown in Fig. 9 with parts broken away; and

Fig. 11 is a longitudinal vertical sectional view illustrat ing another modified form of the adapter for use with a reciprocating pump.

ICC

Referring to the drawings which illustrate the preferred embodiment of the invention, and particularly referring to Figs. 1 and 2, the numeral 20 designates a well casing which may carry a drive point or other reticulated member (not shown) at its lower end and which mounts a cap 21 at its upper end. The cap 21 is preferably lockedy `on the upper end of the casing 20 as by means of set screws 22 and preferably has a substantially airtight sealed connection with the casing 20. The upper end of the casing 20 may extend to any desired elevation relative to ground level and, for convenience, will normally terminate somewhat above ground level.

My adapter comprises a body portion, such as a casting 25, of a size to fit with clearance within the casing 2) and, as here shown, is provided with a curved or arcuate side face 26 having a radius substantially the same as the radius of the inner surface of the casing 20. The

width of the body 25 is substantially less than the inner diameter of the casing 20, as best seen in Fig. 2. The body has` a passage 27 therein opening substantially centrally relative to the face 26 and being substantially L- `shaped and characterized by a downwardly projecting screw-threaded portion 28. The face 26 of the body has an annular groove formed therein around and spaced from the mouth of passage 27 which seats a resilient packing ring 29, such as an O-ring, whose thickness is sub1 stantiallygreater than the depth of the groove so that a with a projecting lip 30 extending from the surface 26. The lipI 30 is adapted to project into an outlet opening31 formed in the casing 20 spaced below the upper end thereof and with which registers and communicates the passage 27 in the adapter body 2S.

A fitting 32, such as a saddle member, has an annular groove in its inner or concave pipe-confronting surface within which seats a sealing ring 33 formed of rubber or other resilient material of a thickness greater than the depth of the groove so as to permit continuous sealing engagement thereof with the outer surface of the casing around the opening 31 when the saddle 32 is drawn tight against the casing. The saddle may be mounted on casing 20 by any suitable means, as by means of U-bolt 34 having threaded ends passing through openings in the fitting and nuts 35 on the ends of the U-bolt and pressing against the fitting 32. The fitting 32Yhas a passage 36 therethrough and preferably includes a neck or sleeve portion 37 having a screw-threaded bore forming a part of the passage 36 which communicates with the casing opening 31. An outlet conduit 38 is screw-threaded in the fitting sleeve 37.

The portion of the body 25 opposite the surface 26 thereof has a wedge 39 intermediate the height thereof, said wedge having a progressively decreasing projection relative to the body 25 from its upper toward its lower end. The wedge 39 is preferably narrow and is engageable by a wedge or cam portion 40 at the lower end of a camming member 41 which has a central opening and whose upper or head portion 42 has a screw-threaded bore to mount a vertically upwardly extending rod or bar 43. The Well casing preferably mounts a bracket 44 therein adjacent its upper end, which bracket is eitheragaesasai:

the cap 21. The upper end of rod 47 may be screwthreaded to mount the sleeve 48.

The screw-threaded passage 28 in the adapter body 25 mounts the upper end of a depending conduit 50 having a laterally deflected lower open end portion 51 located above the level 52 to which water rises in the casing 20 by ground pressure. positioned substantially coaxially with the conduit 50 and has an upper laterally deflected end portion 54 opening at approximately the same level as the end 51 of the conduit 50 but in different direction so that water discharged therefrom will not directly enter the conduit end 51. The end portions 51 and 54 are welded or otherwise fxedly connected together. A check valve is mounted on and controls the outlet 54 of the conduit 53 and, as shown in Fig. l, may constitute a ap valve 55 pivoted at 56 to the uppermost part of the conduit end 54 and adapted to drop by gravity into a closed or sealing position and to be opened only by pressure of water passing upwardly therethrough. The conduit 53 will preferably mount one or more air charger mechanisms 57 thereon spaced below the end 54 thereof and above the water level 52. The members 57 may constitute any of the mechanisms well known in the art which serve as air chargers or bleeder orifices to charge air into the upper part of the casing byrentrainment in water pumped through conduit 53. The lower end of the conduit 43 mounts a submerged electric pump 58 of any conventional or well known type located below the water level 52 and capable of operation to force or, propel water upwardly through the conduit 53 for discharge through the outlet 54 thereof.

The conduit 53 mounts a disk or plate 60 spaced below the angular end portion 5,4 thereof and, in turn, mounting a gasket member 61, here shown asof the cup-shaped',

type, with itsperipheral ange.projectingupwardlyi so' as to be spreadand heldin sealing engagement with the inner surface of the casing 20 by the weight of water thereabove and here shown as extending to a level 62 spaced above the level of the conduit openings 51 and 54. The disk 60 is preferably welded or otherwise fixed upon the conduit 53.

A conduit 63 is disposed eccentrically in the well casing 20 to extend alongsideV the conduit 50, the adapter body 25, and the rods 43 and 47. The lower end portion of the conduit 63 passes through-the disk 60 and the washer 61 with a sealed. fit and the conduit opens into communication with.th'e casingv chamber below seal 61. The upper end portion of the conduit 63 extends with a sealed fit through the cap 21 and communicates with a conventional electrical conduit 64. An electrical lead, shown schematically at 65, passes through the conduits 64 and 63 from a suitable source andinto and through the portion of the casing 20 below the disk 60 for electrical connection with the motor of the submerged pump 58.

Each of the partition 60 and the gasket 61 is provided with an aperture 66. The apertures 66 arefin register and are normally sealed by a valve element 67 having a stem passing through the apertures 66 and mounting a stop 68 at its lower end. The valve 67 iscarried by an elongated exible cord or cable 69 upon which is mountedl a oat member 70 intermediate its length and at a selected position spaced normally below the body 25. The cord 69 passes upwardly in the casing, having free clearance with the body 25 and being connected at its upper end to a lever 71Y pivoted at 72 to a bracket depending from the cap 21 and normally upwardly urged by a spring 73 to seat a valve member 74 against a valve seat. depending from the cap 21 and surrounding an aperture.

therein. A conduit 75 communicates with the vali/ed` opening and preferably terminates in a 'downwardly exf tending portion (not shown) which is positioned' along;

A second conduit 53 is' or cable 69 with the lever 71 is-preferably.such.-that,.if the water level 62 lowers beyond a predetermined level, the weight of the float member 70 will overcome the action of the spring 73 and permit the air valve 74 to open to discharge air from the portion of the chamber or casing 20 above the liquid level 62.

In the assembly of the device the well casing 20 is first driven to the necessary depth to permit water to enter the lower end thereof to the level 52. The opening 31 in the casing is then formed` at desired level and the fitting 32 is mounted upon the casing and the conduit 38 is connected to the fitting soas toinsure that water passing through the outlet 31 willA be confined by the seal 33 and directed into the outlet conduit 38. Thereupon the adapter body 25 with its connected conduits 50 and 53, the pump 58, the partition 60 and the conduit 63, are assembled. The valve 67 and its associated parts 69 and 70 are connected to the assembly, as is the rod 47. This assembly is then lowered into the casing 20 and, asthe adapter body 25 thereof approaches the open upper end of the casing 20, the cam fitting 41 is engaged with the wedge 39 and thereafter is lowered into the casing along with the remaining parts of theassembly.

When the adapter body 25 reaches the' desired level at` which its passage 27 communicateszwithv the casing passage 31, the adapter is held in that position by means of rod 47 while the rod 43 is manipulated relative to the bracket 44 and has the nut 45. threaded thereon. Thereupon, while the adapter body isilheld by` gripping the upper end of the rod 47 or anextension memberrse'cured thereto, as bythe sleeve 48, the nut 45 is manipulated to tighten thesame and draw upwardly upon the wedge' fitting 40, 41 while the adapter.25fiseheld.stationary with itssealing'gmember 29 concentric with the'casing opening 31` and'` iny position to. continuously enga'gethelinner sur; face of the casingas" urged laterally'thereagainst; The'- upward movement of the wedge or cam member 41 sliding against the well casing causes the cam 40 thereof to traverse the adapter wedge 39 to` presstheisealing ring 29 against the casing.

In cases where the adapter body is provided with the lip 30, it will be apparent that the lip may rest upon the lower edge of the opening 31 to sustain the :weight of the adapter and the parts connected therewith; thus simplifying the operation of mounting the'adapter. When the wedge member 40 engages theadapter wedge 39, it presses the adapter laterally in the casingto loclcthe lip 30 effectively within the opening 31,u thusseliminating the need for the installer to hold the bar 47. The nut 45 is tightened until such time as an assured continuous seal is effected between the sealing ring 29 and the inner surface of the casing 20 around the opening 31. Thereupon the cap 21 can be installed in place after having first connected thecord 69 to the valve lever 71, and the device is ready for use.

It will be apparent that upon operation the pump unit 58 forces water upwardly through conduit 53 for discharge at 54 into the chamber above the sealed partition 60, 61. As the water level 62 rises in the upper part of the casing 20, the air pressure in the casing 20 thereabove increases and this pressure serves to force water through the open lower end 51 of the conduit 50 and upwardly in that conduit and the adapter 25 into the outlet conduit 3S. The conduit 38 will be provided with a` pressure switch (not shown) located in the circuit of which the lead 65 constitutes a part, so that upon the attainment ofy a` predeterminedawater pressure in the line 38 the motor of the submerged pump SS/wilil be stopped. When water isfdrawn from the system with a resulting dropin the pressure in the system entailed by a lowering ofitl'lc -water level 62T the pressure switch in conduit 38 will belclosedto. again operate the submerged' pump 58- to pump more'water and restore the pressure in the system;

Whenever it becomes necessary to repair the pump 58 or to replace parts thereof or of the well, the followi ing procedure is followed. The air pressure in the upper part of the casing is first bled, as by manually opening valve 74. Then the cap 21 is removed from the upper part of the casing. The cord 69 is pulled upon to open the valve -67 and drain from the casing all water above the level of the plate 60 and gasket 61. Thereupon the bar 47 has an extension (not shown) secured thereto by means of the sleeve 48, the same being connected with a hoist or like mechanism. Then the nut 45 is loosened to loosen the wedging cam 41 and permit the adapter 25 to be swung laterally inwardly to the extent required to disengage the lip 30 from the aperture 31. Thereupon an upward pull upon the member 47 andthe bar 43 will withdraw from the pump casing the entire pump sub-assembly to render it accessible for convenient repair and replacement of parts. When repair has been completed, the assembly is reinstalled in the casing in proper position and the pump is reactivated.

The adapter body may be altered, if desired, to prevent rocking thereof in a manner to compress the gasket ring 29 unequally throughout its circumference. Thus, as illustrated in Fig. 3, the adapter body 25 may have a projection 80 at its upper end and a projection 81 at its lower en d, which projections form interruptions of the surface 26 of the adapter body and are spaced from the groove seating the sealing member 29. The projections 80 and 81 terminate short of the projection 30 so as to avoid interference with the supporting or suspending function of the lip 30 as it seats in the lower part of the casing opening 31. The extent of the pro jection of the lugs 80 and 81 is substantially less than the normal extent of projection of the uncompressed gasket ring 29 from the face 28, so as to insure that the gasket ring 29 will have been pressed into full sealing engagement with the well casing 20 by the time the lugs 80 and 81 engage the well casing as a result of the operation of the wedging cam 40 acting against the wedge 39 on the adapter body.

In cases where the use of a saddle fitting at the casing outlet is not desired, the well casing may have an outlet of the character illustrated in Figs. 5 and 6. Thus an aperture 31 is formed in the well casing and an outlet assembly is welded to the casing around aperture 31'. The assembly consists of a curved plate 82 adapted to be peripherallyV welded at 83 to the outer surface of the casing 30 continuously around and in spaced relation to the aperture 31'. The curved plate 82 has anaperture 84 formed therein to communicate with the aperture 31 and against this plate 82 around the opening 84 is abutted the end of an outlet pipe 38 which is peripherally welded thereto at 85. In this construction the opening 31 will preferably be of such size in relation to the inner diameter of the sealing ring 29 that the sealing ring may continuously and sealingly engage the plate 82.

In cases where it is desired to avoid the operation of welding to the casing after it has been lowered in the ground, and iu which it is also desired to avoid the use of saddles, as illustrated in Figs. 1 and 2, the construction illustrated in Fig. 4 may be employed. `In this instance the casing 20 is formed of a plurality of parts including a lower casing part 86, an upper casing part the adapter body 25 with a projection such as the lip 30k 'engaging within the aperture 31 of the casing, and it may be also desirable to provide means different from those described above for support of the adapter after it has been lowered into the pipe casing and before the adapter has been wedged into sealing engagement with the pipe casing. Such a construction is illustrated in Figs. 9 and 10, wherein the body of the adapter 25 at the surface 26 thereof is smooth and uninterrupted except for the groove receiving the gasket ring 29. It will be under stood, however, that projections may be provided on the adapter body as shown at 80,81 in Fig. 3, if desired. The bar 47 is connected to the upper end of the adapter and has a nut 95 threaded on its upper end. Bar 47 is preferably provided with an axial screw-threaded socket in its upper end. The cap 21 has a bore 96 adapted to receive the upper end portion of the rod y47. The shank of a set screw 97 passes through the bore 96 and has a large head bearing against the top surface of the cap 21 around the opening 96. The set screw is screwthreaded in the socket in the member 47 so that it locks the member 47 relative to the cap 21. The cap 21 is also provided with a bore within which tits snugly and slidably the rod 43 upon whose upper end is screwthreaded the nut 45 to bear against the top of cap 21.

lIn this construction it will be apparent that the adapter body 25 is supported or suspended from the vcap 21 and the casing 20 when lowered within the casing. For this purpose it will be apparent that Ithe length of the memwedging member 41 rela-tive to the wed'ge 39 of the adapter. The pump arts and associated elements are 87, and an intermediate casing part 88 which may be Y in the nature of a T, in that it has welded or otherwise xedly secured thereto a laterally projecting part 89 intermediate its ends. If desired, gasket members 90 and 91 may be interposed between the adjacent ends of the sections 86, 87 and 88, and screw-threaded means may be provided to join the conduit parts 86, 87 and 88. One formof such means may include sleeve members 92 welded to the upper end of the lower section 86 and to the lower end of the upper section 87, respectively, to project therefrom. The sleeves 92 may be internally screw-threaded and the opposite end portions of the con- Ithen connected to the adapter, and the assembly is lowered into the casing 20 to -be suspended from the cap 21. The register of the bore 27 of the adapter with the casing opening 31 can be observed through the opening 31 or by observation of the radial location of the nut 45 with relation to the radial location of outlet 31. The nut .45 can then be tightened to wedge the adapter against the casing for sealing engagement of the sealing ring 29 with the casing 20.

The adapter is well suited for use with jet type pumps by construction thereof in the manner illustrated in Figs. 7 and 8. Jet pump installations require a pressure line and -a water discharge line, and the adapter illustrated in Figs. 7 and 8 provides the same. -In this Iconstruction the adapter body is elongated and of slightly different shape than the adapter 25. 'Ihe body 100 has passages 101 and 102. The passage 101 cornmunicates with a bore 103 in which is screw-threaded the upper end of a depending conduit 104. Passage 102 has a bore 105 offset therefrom with which a' de,

108 is formed in said surface in spaced concentric relation with opening'102. A projection 109 projects from the face of body 100 near opening 101', and a projection 110 projects from the body`100 near the opening 102.

These projections seat in openingswithin the pipe casingV 20.and.may be tubular as. shown. Annular seal 111 seats..in.groove 107 and annular seal 112 seats in the groove 1078. Said seals constitute flexible and resilient rubber or synthetic rubber rings whose thickness is greater. than the dep-th of the respective grooves. The seals are adapted to bear continuously against the inner surface of the easing 20-around the openings into which the projections 109 and 110 extend. The body 100 has the wedge 113 formed therein in diametrically opposed relation to. the outlets of the passages 101 and 102 and adapted to beengaged by a` wedging cam 114 oni a vtting 115 adapted to be drawn upon by a draw rod 116 for the purpose of pressing the gasket rings 111 and 112 in sealing engagement'withthe casing' wall as will be apparent.

One or a pair of saddle fittings 117 are'carried by the casing as` by means of- U-bolts 118 and have concave casing-confronting surfaces'interrrupted by grooves within which sealing rings 119 and 120 are seated. The seal ring grooves are concentric with passages 121 and 122, respectively, in said fitting which communicate with the passages 101 and 102 in the adapter. duits 123 and 124 are screw-threaded in` the ttingor saddler117.

The use of the adapter in connection with a reciprocating type of pump isfillustrated in Fig. 1l. The

well casing 120 has'a cap 121 provided with an opening.

122 to slidably receive a spacer tube 123. A reciproeating pump rod 125 extends'within and isiixed at 124 to the spacer tube 123.` Rod` 125 is pivotallynconnected at its upper end toI an operating leverior rod 126. Rod

125 extends substantially centrally in the1casing120'toa'pump head or piston (not shown) adjacent-the lower end of the casing.' Thepump casingisrprovided with an outletopeningLlSU-atdesired height thereof. A sadA dle' 131 having a screw-threadedV passage therethrough' within which is connectedV the end of outlet conduit 132 is secured to the casing 120. in register with the passage '130, as by meansof a U-bolt 133. A gasket ring 134 is 'carried by the casing-confronting surface of the saddle to provide continuous sealed engagement with the casing around the' opening 130`as the securing meansl for saddle 131 is drawn taut.

Thel adapter body/'135 ha'sa transverse passagelsttherein adaptedto register with'- the bore ofthe. fitting- 131 here' shown-as; being' outlined in.part'by a tubular projection 137 adapted'toliit in the' opening 130, al thouglrit' will be understood -that`a lip to seat against the' bottom portion'of theopening l130 may sufice The body 135 has a groove receiving a'resilient sealing ringr 138 continuously engageable with the inner'wall of the casing around the opening' 130. A wedge rib 139 isr formed in diametrically opposed relation to the gasket ring-mounted surface of the adapter' b'ody'135 and is engageable by the' cam portion 140 of a cam iitting through communicating with passage 136, said'bore'being screw-threaded to mount'the` upper end of a depending tube 145 through which the pump' rod 1235 extends.

Asecond tube.146 isiscrew-threaded in theupperrpart ofA the'rpassa'ge to' project.' abo'vethe adapter and define a cylinderfwithin which afpiston 147 is mounted.

The adapter body' alsoI has a passage 150 extending;y upwardly from the passage 136:. A.-eonduit151V com:Y

municates with passage 150 and preferably is provided Con-W with aV hold-down cap 152 at its top whichis secured to` the cap 121 by means of a screw 153. The conduit 151 is preferably cutVV away at 154 and a bracket 155 i carried by the spacer tube 123 projects through the the stroke of air pump piston 157. The tube 151 is also provided with a valve seat 159 below piston 157 against which a spring-pressed valve 160 seats to normally close` the same but to be unseated by pressure of air pumped by the piston157.

A check valve 165 is mounted in passage 136 of the adapter between passage 150 and tube 145 to permit water to liow from the tube 145 to outlet tube 132.

The piston 147 is a differential piston, and the tube 146 isr a'differential cylinder, and the piston reciprocates in that cylinder coincident with the reciprocation of pump rod to pump water upwardly in the tube 145 for discharge through valve 165 into outlet conduit 132. An air charge is pumped in the air tube 151 incident to each operation of the pump rod 156 with pump rod 125, thus introducing an air charge into the wateibeing pumped to the conduit 132. Air cylinder 151 is held down against a gasket 161 at the top surface of the adapter bodyv by means of the set screw 153.

By-means of this construction, it is possible to remove pump rod 125 and its associated parts, including the air pump 151, 157 without removing the adapter 135. Furthermore, it is possible, by -releasing the tension on theV set screw 143, to release`the Vadapter and thereby remove the entirepumpmechanism,n which case alength of pipe will preferably. be-coup'ledonto the upper end of the differential cylinder 146 for the` lifting operation.`

While the preferred l embodimentsv of the invention have`been illustrated and described, it will be understood.` that changes in the-construction may be made within theA said passage and with'a pumping unit, and wedge means` in' said casing alongsidesaid adapter forl anchoring said adapte'rin engagement .with saidtcasing with the discharge m'outhof its 'passage communicating with said outlet, said adapter'having a vertical tapered rib diametrically opposite thedi'scharge' mouth of said adapter passage and having its greatest width. at its upper end, said wedging means engaging said rib and said casing and including means for urging it'- upwardly against said rib to urge said adapter laterally.

2. In a well, a casing' having a' discharge outlet intermediate its length, an adapter having a passage, a conduit depending from saidadapter and communicating with said passage andl with a pumping unit, wedge means in said casing alongside and engaging said adapter for laterally pressing said adapter in engagement with said casing with the discharge mouth of the passage communicating with said outlet, saidvadapter having a vertical tapered rib diametrically opposite the discharge mouth of said adapter passage and having its greatest width at its upper end, said wedge means including a fitting embracing saidv rib and having a'taperedlower part engaging'sa'id casing and said rib, and means'urgingsaid fitting upwardly rela# tive to' said-adapter.

3l A well comprising a` casing' having' a' discharge' outi letiintermediate its length, a cap sealing the top `ot' said casing,- ani adapter 'having a` passage, means for wedgng duit, a submersible motor pump carried by said second conduit, a partition carried by said second conduit above the normal level of water in said casing, air charging means on said second conduit below said partition, said first conduit having an inlet open-ing therein adjacent and above said partition, said second conduit having an outlet adjacent to and above said partition, a check valve in the outlet of said second conduit, a conduit extending through said casing with sealed connections with said cap and partition, and an electrical conductor extending through said last named conduit for connection with the pump motor.

4. A well as defined in claim 3, wherein said cap has an air passage, and a normally closed valve for sealing said -air passage.

5. A 4well as defined in claim 3, wherein said partition has an opening, a valve normally closing said partition opening, and a float connected to said valve.

6. A well as defined in claim 3, wherein said cap'has i an air outlet, a normally closed valve for sealing said outlet, said partition having an opening, a valve normally closing said partition opening, and manually operable means for opening said valves.

7. In a Well, a casing having a discharge outlet intermediate its length, an adapter having a passage, a conduit depending from said adapter and communicating with said passage and with a pumping unit, wedge means bearing against said casing substantially diametrically opposite said outlet and having an inclined surface, said adapter having an inclined surface portion engaged by and coacting with the inclined surface of said wedge means, and means for moving said wedge means in said casing relative to said adapter for pressing said adapter laterally into engagement with said casing with its passage communicating with said outlet.

8. The combination deiined in claim 7 wherein said adapter has an annular groove in one side face surrounding said passage, yand a sealing ring seating n said groove and of a thickness greater than the depth of said groove for continuously engaging said casing around said outlet.

9. The combination deiined in claim 7, wherein a lug projects from said adapter adjacent said passage and seats in said casing outlet.

10. The combination defined in claim 7, wherein a tubular projection on said adapter at the mouth of said passage seats in said casing outlet.

11. The combination defined in claim 7, wherein a sealing ring is carried by said adapter and surrounds said outlet for sealing engagement with said casing and abutments project from said adapter above and below said passage and engage said casing when said ring is in sealing engagement with said casing.

l2. In a well, a casing having adischarge outlet intermediate its length, an adapter having a passage, a conduit depending from said adapter and communicating with said passage and with a pumping unit, wedge means References Cited in the ile of this patent UNITED STATES PATENTS 1,604,580 Jaques Oct. 26, 1926 '2,689,611 Martinson Sept. 21, 1954 2,771,955 Carter Nov. 27, 1956 2,903,067 Hall Sept. 8, 1959

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