US1277381A - Rotary pump. - Google Patents

Description

M; T. CHAPMAN.

ROTARY PUM'P. I APPLICATION FILED MAR.22. I915.

Patented Sept. 3,1918,

3 SHEETS-SHEET I.

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s3 3% as 36 M. T. CHAPMAN.

ROTARY PUMP. APPLICATION FILED MAR 22. I915.

u|-- I 46 lllllllllIUWIIWIIIUIM J0\ A 1 r wlllllllllllllllllllllllllfllil 61; z I i 65 "@WJY IIA'IrHnw T. CHAPMAN, or AURORA, ILLIIIoIs.

ROTARY PUMP.

nearest.

Specification of Letters Patent.

Patented eept. 3, 191%.

Application filed Mai-ch22, 1915. Serial No. 16,101.

of which the following is .a specification,

' reference being had to the accompanying drawings. I This invention relates to rotary pumps. and it is designed particularly for pumping water containing a large amount of sand. and grit. In some localities where water 1s pumped for irrigation purposes, a hole is bored into the earth and a casing having comparatively large perforations is used, permitting the admission into the pump of "sand and gravel which are pumped up with thewater, the displacement of such sand and gravel having the efiect of opening up the earth for the free passage of water to the well. In this way, the rapidity of flow ofwater to the well is very materially increased, thus increasing the amount of water which is capable of bein pumped from the well in a given time. t is one of the principal objects of my invention to provide improved means -in a pump of this type for preventing the sand and grit carried upward with the water from working its way into the bearings of the pump. It

is another object of my invention to provide improved meansin a pump of this type for supporting the pump shaft and runners and the water lifted thereby so as to relieve to a great extent the downward. pressure upon the shaft bearings. It is another object of my invention to provide a new and improved form of bearing for the shaft of a pump of thistype. It is another object of my invention to provide a new and improved form of coupling for joining together the adjacent ends of the pump casing sections and for holding the shaft casing in centered position within the pump cas-- ing. It is another object of my invention to improve pumps of this type in sundry details hereinafter pointed out. The preferred means by which I have accomplished my objects are illustrated in the accompanying drawings and are hereinafter specifically described. That which I believe to be new and desire to cover by this application is set forth in the claims.

In the drawings Figure 1 is a central vertical section thrfiugh the apparatus at the top of the we Fig. 2.is a horizontal cross-section taken substantially on line 2-2 of Fig. 1;

- Fig. 3 is a horizontal cross-section taken on line 3-3 of Fig. 1;

Fig. 4 is a horizontal cross-section taken on line-H of- Fig. 1;

Fig. 5 is an enlarged top view of the runner mounted upon the pump shaft just .below the upper end of the shaft;

Fig. 6 is a central vertical section throughsaid runner showing the means for adjusting the runner upon the shaft, being taken substantially on line 6-43 of Fig. 5;

Fig. 7 is .a view, partly in vertical section,

showing an intermediate portion of the,

pump shaft, the shaft casing and'the pump casing;

Fig. 8 is an enlarged detail, being a central vertical section through one of the'couplings by which adjacent "sections of the shaft casing are joined together, and showing the shaft bearing mounted in said coupling, said view being an enlarged view taken substantially on line 8-8 of Fig. 7

Fig. 9 is a side view of the shaft bearing- .block shown in section in Fig. 8;

.Fig. 10 is a top view of the bearing-block shown in'Fig. 9;

Fig. 11 is a top view of one of the plates mounted'upon the pump shaft adjacent to the bearing-block shown in Fig. 8; and

Fig. 12 is a central vertical section through thewater raising elements mounted upon the pump shaft.

Referring to the several figures of the drawings in which corresponding parts are indicated by the same reference characters,'

20 indicates the water discharge head fixedly secured in position in any suitable manner at or near the top of the well. Secured t0 the water discharge head 20 and rising therefrom is a stationary frame 21, upon a sleeve 22 at the upper end of which is revolubly mounted a pulley 23, the lower end of which extends down about the upper end of the frame 21. 4 An anti-friction hearthe pulley 23 and its connected parts. The

sleeve 22 is out of contact with the shaft 26 which is keyed in the hub of the pulley- 23, whereby the anti-friction bearings 24 and 25 are adapted to be the entire support of the pulley and the shaft upon the frame 21. A flange 27 is secured to the upper end of the frame 21 about the anti-friction bearings 24-25, providing a' receptacle for a suitable lubricant for said bearings. Locknuts 28-29 are mounted by means'of screwthreads upon the upper end of the shaft 26 above the hub of the pulley 23 adapted to hold the shaft 26 adjustably in position relative to the pulley and to the frame 21, as will be readily understood.

Depending from the water discharge head is a water discharge casing 30 composed of a plurality of sections suitably joined together. The uppermost pump casing 30 is secured to the water discharge head 20 by means of a ring 31 secured by means of screw-threads upon its upper end, said ring being secured to the head 20 by means of a.

plurality of bolts 32. Upon the adjacent ends of the pump casing sections 30. there are secured by means of screw-threads suit able collars 33 which are secured together by means of bolts 34. A spider 35 is mounted between the adjacent ends of the pump casing sections 30, as is best shown in Fig. 1, the collars 33 being rabbeted out to receive the outer edge of the spider. Secured to the inner'ends of the arms 36 of the spider 35 is a sleeve 37 which serves as a guide and centering device for the shaft casing 38 to be hereinafter described.

The shaft casing 38 is formed of separate sections suitably connected together, as hereinafter described. The upper end of the upper section of said shaft casing extends through the upper wall of the water discharge head 20 into the lower end of the frame 21. Packing 39 of any suitable type is secured in a suitable recess in the upper wall of the head 20 about the shaft casing 38 so as to prevent the water being forced upward by the runners from passing upward around the outside of the casing 38. A ring 40 isloosely mounted upon the shaft casing 38'above the packing 39, and locknuts 41-42 are secured upon the said casing.

by means of screw-threads for holding the shaft casing adjustably in position relative to the water discharge head 20.

The adjacentends of the shaft casing sections 38 are connected by means of coupling sleeves 43 secured by'means of screw-threads tions 38. The bearing-block 44 is preferably formed of a plurality of sections, as best shown in Fig. 10, such sections being secured together by a plurality of bands 46 set into the surface of the block. Preferably ne ted by means of couplings 47 secured to the respective sections by means of screwthreads, as best shown at the top of Fig. 7. In my preferred construction the casing 38 is made up of comparatively short sections,of about eight feet in length for example,-while the sections 26 of the shaft are approximately twice as long.

The lower end of the lowermost section 30 of the pump casing or water discharge casing is connected by means of a sleeve 48 and bolts 49 to the upper end of a runner-head 50. A bearing-sleeve 51 for the shaft 26 is carried by the head 50, being held in central position therein by suitable ribs 52. The upper end of the bearing sleeve 51 is secured by means of a coupling 51 to the lower end of the lowermost section of the shaft casing 38. Secured in any suitable manner below the runner head 50 are a series of runner casings 53 in which runners 54 feathered upon the shaft 26 are adapted to rotate.

,The runners are spaced apart from each bearing head 59 supporting by means of ribs 60 a bearing sleeve 61 in centered position relative to the head 59. A collar 62 embracing the upper end of the bearing sleeve 61 is secured by means of a set screw 63 upon the shaft 26 above the sleeve 61v adapted to limit the downward movement of the shaft 26 relative to the bearing sleeve 61. A suction pipe 64 is secured by means of a collar 65 and bolts 66 upon the lowei end of the bearing head 59, the suction pipe 64 being adapted to extend down into the Well to the limit of the suction power of the pump so as to prevent the pump from sucking air as the water is lowered in the well by the action of the pump.

- For the purpose of lubricating the shaft 26. preventing the admission of sand and grit into the bearings of the pump shaft, and providing means for relieving a great portion of the downward pressure upon the anti-friction bearing 25, I have provided a runner 67 mounted upon the shaft 26 near its upper end above the water discharge head 20, adapted to pump an auxiliary su ply of clean water downward through t e casing 38, as hereinafter described. As best shown in Figs. 5 and 6, the runner 67 is feathered upon the shaft 26, preferably by the use'of two feathers or splines 68, whereby the runner is adjustable up and down relative to the shaft. The runner is limited in its upward movement relative to the shaft by means of a sleeve 69 secured by means of screw-threads upon an enlarged portion of the shaft 26 just above the position the runner 67' is designed to occupy, the sleeve 69 being adapted to be locked in position b a jam-nut 70. The runner 67 is provi ed with a plurality of vanes 71 on its upper face, which are so arranged as to be adapted upon the rotation of the runner to have a centrifugal action upon any water admitted into contact with the runner. This runner or impeller is' smooth on its under side to avoid centrifugal action on the liquid. The pressure on the upper side of said runner or impeller increases from the hub to the rim caused by the rotation of the centrifugal blades fixed thereon, while the pressure on the smooth side is uniform and equal to that at the rim of the impeller. An unbalanced upward thrust is thereby created. A

runner casing 72 mounted upon the upper groove is forced downward through the end of the shaft casing 38 surrounds the runner 67, having its upper end closed about the shaft 26 by means of suitable packing 73 held in position by a gland 74. A pipe 75 is adapted to connect the casing .72 with any suitable source of supply of water, either from the water pumped or from any other suitable source. The lower wall of the casing 72 which extends about the shaft 26 over the end of the casing 38 is perforated, as is best shown in Fig. 1, the perforations being covered by a screen 76 so as to prevent the admission into the pipe 38 of sand or grit which wouldtend to cause undue wear upon the bearings.

The shaft 26 where it extends through the bearing sleeve 51 is provided with one or more spiral grooves 77 extending about the shaft in such a direction that upon the rotation of the shaft for pumping purposes the water which isfed downward through the shaft casing 38 to the upper end of the bearing by a screw action. The portion of the shaft 26 which extends through the bearing sleeve 61 is also provided with a plurality of spiral grooves 78', such grooves extending in a direction opposite tothat of the grooves .77 whereby water admitted to the lower ends of such grooves is forced upward by screw action upon the operative veying a supply of water from the shaft casing 38 to the lower bearing 61, one of which comprises a hole 79 bored through the center of the shaft 26, suitable ducts being provided leading from the central hole 79 to the exterior of the shaft within the casing 38 and near the lower end of the bear ing 61-. The other means shown comprises a pipe 80 connected at one end with suitable ducts 81 in the bearing-sleeve 51 and connected at its other end with a duct 82 leading to the bearing face of the sleeve 61 near the lower end of the shaft. By the use of these expedients for connecting the casing 38 with the bearing 61, or by the use of either one of them alone as may be preferred, the water forced downward through spiral grooves 77 cut in the shaft within the bearing 51, but also to the spiral groove 78 out in the shaft 26 within the bearing sleeve 61. The grooves 78 at their upper ends open into an annular space 61 between the collar 62 and the upper end of the bearing sleeve 61 so as to afford an outlet from the grooves 78 into the runner casing 53 upon the suction side of the pump. Loosely mounted in a recess in the lower end of the bearing sleeve 51 about the lower ends of the grooves 77 is a ring 83. Diagonally-positioned in the hubs of the uppermost'runner 54 extending downward and outward from the shaft 26 and from the ring 83 there are a plurality of ducts 84 which facilitate the escape of of the pump. The ring 83 rests snugly upon these. ducts provide an opening from the grooves 77, but they also have a tendency to create a suction by centrifugal force when the runner is being rotated in the operation Y of the pump. The ring 83 rests snugly upon Power is applied to the pulley 23 by means of a belt driven from any suitable source of power for rotating the shaft 26 in counterclockwise direction in Fig. 2. By reason of the mounting of' the pulley 23 upon the sleeve 22 of the stationary frame 21 which sleeve 22 is out of contact with the'shaft 26, the friction of the pulley and shaft is maintained at a minimum and the shaft 26 is held against all side strain. By reason, of the rotation of the runners 54 through the medium of the shaft 26, water is drawn upward through the suction pipe 6-1 and forced upward to the surface through the water discharge casing'30.. At the same time the, runner 67 is forcing the water to connect the ducts 84 with the grooves 77. i

delivered to the casing 72 by the pipe 75 outward away from the shaft along the 'to the supporting bearing 25. The amount of force exerted by the runner 67 depends among other things upon the size of the runner, the manufacturer being enabled thus to regulate the amount of pressure exerted by the runner 67. In the preferred form of construction, the runner 67 is designed to create a pressure such as to relieve the greater portion of the downward pressure upon' the bearing 25, but not such as to lift the shaft to the extent of throwing the bearing 25 out'of operation;

By reason of the rovision of the screen 76 at the upper en of the casing 38, the water which is forced downward by the runner 67 into the shaft casing 38 is prevented from carrying with it any sand or grit which would have a tendency to cause unduewear on the bearings. The water passing down the shaft casing 38 under considerable pressure acts as a lubricant for the shaft 26 at each of the bearings of the shaft, a portion of the water being forced between the shaft 26 and the bearing-block 44 as well as between the bearing-block and the coupling-sleeves 43. The water at the lower end of the casing 38 is forced into the grooves 77 with'such a pressure as to prevent any movement of the water being pumped upward along the shaft within the hearing sleeve 51. Not only does this groove construction serve to assist in forcing the water downward by a screw action through the groove, but it also results in the effective washing of the inner face of the bearing sleeve 51 by the body of Water carried in the grooves, serving thus to loosen and flush out any grit or sand which may have found lodgment in the bearing. At the same time the portion of water whiph is delivered to the bearing 61 through one or both of the passages 7980 is forced upward by, the screw action of the grooves 78, serving to prevent the admission of the dirty water being pumped into the bearing and serving to lubricate and clean the bearing 61.

By the provision of the bearings 44 at intervals along the shaft casing 38 the shaft 26 is kept in alinement and in central position relative to said shaft casing and is prevented from rubbing against the shaft casing at any point. By the use of the nuts 28 29 on the upper end of the shaft 26, the shaft-and the runners 54 can be adjusted vertically so as to bring the runners 54 into properposition relative to the runner casings 53. Bythe use of the nuts 41-42 the shaft casing 38 can be pulled up tight relative to the pump casing 30 to whichit is connected at its lower end, as has been above described. The casing 38 and shaft ends, being spaced away from each other by the bearing-blocks 44, and being spaced away from the water-discharge casing or pump casing 30 by the spiders 35 are kept in proper alinement for effective operation. When the casing 38 has been adjusted up ward so as to be brought to the proper tension, as has just been described, and the shaft 26 has been adjusted to bring the run '26 being thus supported from their upper ners 54 into proper position relative to the 4 runner casings 53, the screw-threaded sleeves 69-70 are adjusted upon the shaft 26 so as to cause the runner 67 to operate in proper adjusted position relative to the casing 72. j

So far as I am aware I am the first in the art to provide a runner upon the upper portion of a shaft of a rotary pump for forcing a supply of water downward so as to cause an upward pressure upon the pump shaft or so as to force water downward through the bearings of the shaft at a greater pressure than that developed by the main pum runners mounted upon the shaft whereby the water being pumped is prevented from working its way into the bearings, and my claims are, therefore, to be construed accordingly. Moreover, so far as I am aware, I am the first in the art to provide an auxiliary runner in a pump of this type together with means, for restricting the discharge from the runner casing whereby the' water forced downward by such auxiliary runner is only a small portion of that normally handled by a runner of this description, whereby a heavy upward pressure is produced upon the runner, and I, therefore, desire to cover this feature broadly.

I have provided a pipe leading from the pipe 75, provided with a valve 86 which can be opened 'upon the stoppage of the operation of the pump for permltting the proper draining of the runner casing 72 and the shaft casing 38, as will he readily understood. Upon the upper end of the pipe 85 is placed a funnel 87 whereby water can be poured into the pipe 85 for priming the upper pumping means and for lubricating the bearings of the shaft along the shaft sure than that developed in said bearing by the first-named pumping means and for forcing it through said bearing toward said first-named pumping means for preventing the water pumped by said first-named pumping means from entering said bearing.

3. In a rotary pump, the combination of a pump shaft, rotary pumping means driven I by said shaft, a bearing for said shaft above said pumping means,- a shaft casing surrounding sa'id shaft down to said bearingadapted to protect said shaft from the water being pumped by said pumping means, and other pumping means mounted on said shaft and driven thereby adapted to deliver water through said shaft casing to said bearing and to force such water through said bearing against the pressure of the water being pumped by said first-named pumping means. 4. In a rotary pump, the combination of a pump shaft, rotary pumping means driven by said shaft, a, bearing for said shaft below said pumping means, a shaft casing surrounding said shaft above said pumping means ada'p'ted to protect that portion of the shaft from the water being pumped by said pumping means, said shaft havin a passage extending longitudinally thereo communicating at its upper end with said shaft casing and opening at its lower end inside of said bearing, and other pumping means mounted on said shaft and driven thereby adapted to deliver clean water through said shaft casing and said passage to said bearing and to force such clean water through said bearing toward said first-named pumping means.

5. In a rotary pump, the combination of a pump shaft, rotary pumping means driven bysaid shaft, a'bearing for said shaft adjacent to said pumping means, a shaft casing surrounding said shaft above said pumping means and communicating with said bearing adapted to protect that portion of the shaft from the water being pumped by said pumping means, a runner casing mounted on the upper end of said shaft casing and communicating therewith, means for delivering water to said runner casing, a runner in said runner casing driven by said shaft and adapted to force the water delivered to said runner casing down through said shaft casing for washing out said bearing, and means runner casing to saidshaft casing.

6. In',a rotary pump, the combination of a v pump shaft, rotary umping means driven by said shaft, a bearmg for said shaft adjacent to said pumping means, a shaft casing surrounding said shaft above said pumping means and communicating with said bearin adapted to protect that portion of the sha t from the water being pumped by said pumping means, a runner casing mounted on the upper end of said shaft casing and communicating therewith, means for delivering water to said runner casing, a runner insaid runner casing feathered upon said shaft and adapted to force the water delivered to said runner casing down through said shaft casing for washing out said bearing, and adjust-able means for limiting the upward movement of said runner relative to said shaft, said runner comprising a plate and vanesfixed on the upper face of said plate adapted by their rotation about the shaft to force the water delivered to said runner casing outward in the casing about the outer edge of the plate. 7

7. In a rotary pump, the combination of a pump shaft, rotary pumping means driven by said shaft and adapted to force water upward, a runner casing, a runner in said runner casing mounted on said shaft and held against upward movement relative to the shaft, said runner comprising a plate with a smooth lower face and having mounted on its-upper face a, plurality of vanes which are adapted upon the rotation of the runner to force water delivered to said runner casing outward and downward about the outer edge of said plate to the under side thereof, and means restricting the discharge from said runner casing whereby an upward pressure is produced upon the lower face of said plate tending to ralse said runner and said shaft.

8. In a rotary pump, the combination of a cent to said pumping means, and a runner mounted on said shaft and driven thereby for delivering clean water to said bearing at a greater pressure than that developed by said beari by the first-named pumping means and or forcing it through said bearing toward said first-named pumping means for preventing the water pumped by said first-named pumping means from entering said bearing, the action of said runner being also adapted to produce an upward pressure thereon tending to lift said runner and said shaft.

9. In a rotary pump, the combination of a shaft, rotary pumping means driven by said shaft, a caring for said shaft below said pumping means, a passage extending through the lower portion of said shaft and communicating at its lower end with the inits lab

being adapted upon the rotation of the shaft for pumping purposes to force the water in the groove by screw action toward said pumping means.

10. In a rotary pump, the combination of a shaft, a runner driven by said shaft, a bearing for said shaft adjacentto said runner,

means for deliverin water to the upper end of said bearing, sa1d shaft being provided with a spiral roove in its periphery extending' about sa1d shaft within said bearing whereby water entering said groove is forced py screw action toward said runner, a ring oose lower end of saidgroove above sa1d runner,

and openings through said runner for the by screw action toward sa1d runner, and

openings extending diagonally downward and outward through said runner adapted to communicate with said groove and having centrifugal action tending to draw the water downward out of said groove.

12. In a rotary pump, the combination of a shaft, a runner driven by said shaft, a ring loosely surroundin said shaft above said runner and adapte to adjust itself relative to the runner, and openings extending diagonally downward and outward through said runner adapted to have centrifugal action tending to draw water downward from about said ring on the upper face of the runner. 13. In a rotary pump, the combination of a shaft, pumping means adapted to be driven by said shaft, a plurality of shaft casing sections surrounding said shafts, coupling sleeves joining the adjacent ends of said sections, and bearin members mounted in said coupling sleeves for centering said shaft relative to said shaft casing, eachof said bear ing members comprising a block of wood and two rings one interposed at each end of the block between the block and the adjacent casing section, said block and said rings being provided with longitudinally-extending passages for the free passage of water from one to the other of the casing sections.

14. In a rotary pump, the combination of a shaft, pumping means adapted to be driven by said shaft, a plurality of shaft casing raised, and means for casing relative to said 1y surrounding the shaft opposite the collars mounted by said shaft being provided sections surrounding said shaft, coupling sleeves joinin the adjacent ends of sai sections, and earing members mounted in said coupling sleeves for centering said shaft relative to said shaft casing, each of said bearing members comprising a block of wood formed of separate sections held together by bands of wire located in suitable circumferential grooves about said block.

15. In a rotary pump, the combination of a shaft a sectional water discharge casing, means mounted on said shaft-and driven thereby for forcing water upward through said'water discharge casing, a, shaft-casing surrounding said shaft and protecting the shaft from contact with the water being centering -said shaft water discharge casing, the means for connecting the adjacent ends of the water discharge casing sections and for centering the shaft casing relative to said water discharge casing comprising two means ofscrew threads upon the ends of the water discharge casing sections, a" spider having a centrally-located sleeve through which said shaft casing extends, and bolts for connecting said two collars together with the outer edge of the spider extending between said two collars cant down through the' bearings and preventing the water pumped from entering the bearings around the shaft. y

17. In a rotary deep-well pump, the combination of a vertical shaft, a plurality of bearings for said shaft, pump runners mounted on said shaft adapted "to force water upward, and pumping means mounted upon said shaft near the top for forcing a lubricant down through the bearings and preventing the Water pumped from entering the bearings around the shaft, and at the same time creating a pressure for assisting in carrying the Weight of the pump shaft and its load. v

18. In a rotary deep well pump the combination of a vertical shaft, pump runners mounted on said shaft adapted to force water upward, a bearing adjustably supporting said shaft from its upper end por- :rtion, other bearings for said shaft below said first-named bearing, and a pum runneradjustably mounted upon the sha near its upper end below said first-named bearing for pumping lubricant down through the bearings, serving to assist in supporting the shaft and its load to relieve the pressure on said first-named bearing.

19. In a rotary pump, the combination aaraaea of a vertical pump shaft inclosed in a shaft casing, rotary pumping means driven by said shaft, a bearing for said shaft'in said shaft casing, means for delivering clean water to said bearin at a greater pressure than that developed in said bearing by said.- pumping means and for forcing it through said bearing toward said pumping means for preventing water pumped by said pumping means from entering the bearings of the shaft that-areinclosed in the shaft casing.

20. In a deep well rotary pump having its discharge pipes connected together in sections for discharging the water'pumped from the well, a casing surrounding the shaft in the discharge pipe of the pump and ,connected together in sections, centrifugal pump runners mounted on said shaft near the lower end thereof for forcing water up the discharge pipe, a centrifugal pump runner secured to said shaft near its top, inclosed in a casing connected to the casing which surrounds the shaft, said centrifugal pump runner having integral propeller means on the top side of said runner for creating a pressure on the smooth under side of said pump runnerfor partly or wholly suspending said shaft and pumping means-connected thereto, [thereby drawing said shaft in alinement and also forming a thrust bearing for said shaft.

21. In a' deep well rotary pump having its discharge pipes connected together in sections for discharging the water pumped from the well, a casing surrounding the shaft in the discharge pipe of the pumpand also connected together in sections, centrifugal pump runners mounted on said shaft, near the lower end thereof for forcing water up the discharge pipe, a centrifugal pump runner secured to said shaft near its top, inclosed in a casing connected to the casing which surrounds the shaft, said centrifugal pump runner being smooth on its under side and having integral propeller means on the top side of said runner for creating a pressure on the said smooth under side of said pump runner for partly or wholly suspending said shaft and pumping means connected thereto, thereby drawing said shaft in alinement and alsoforming a thrust bearing fol. said shaft, part of said water or liquid used for creating a pressure being supplied to said shaft casing under pressure so as to force the water in the casing down and out of the casing and shaft bearings and lubricating the bearings of said pump shaft even when said shaft bearings are below the water in the well.

22. In a deep well pumping means, the combination with a pump casing located below the surface of the earth, a water discharge casing connected to the pump discharge, a rotary impeller in said pump oasing, and a power shaft to which said impeller is connected, said power shaft extending up through the water discharge casing and connected to power driving means at the top of said water discharge casing and being adapted to transmit power to said impeller for pumping purposes, of a liquid thrust bearing impeller means adjustable vertically mounted near the top of said power shaft for creating an upward pressure for holding said power shaft and pumping means connected thereto in susshaft consisting of a hub and an annular disk connected with said hub, said disk having ce'ntrifugal impeller blades on the upper side of said disk for generating a pressure by its rotationand being smooth on its under side, and means for supplying liquid to the top of said impeller.

23. In a deep well pumping means, the combination with a pump casinglocated below the surface of the earth, a water discharge casing connected to the pump discharge, a rotary impeller in said pump casing, and a power shaft to which said impeller is connected, said power shaft extending up through the water discharge casing and connected to power driving means at the top of said water discharge casing and being adapted to transmit power to said impeller for pumping purposes, of a liquid thrust bearing impeller means mounted near the top of said power shaft for creating an upward pressure for holding said power shaft. and pumping means connected thereto in suspension, a water-tight casing surrounding said power shaft for inclosing said last named impeller means, said water-tight casing being connected at its lower end to the upper end of the casing which surrounds said shaft and conducts the liquid for lubrication to the shaft bearings which are within said casing through the length thereof, said thrust bearing means for sustaining said shaft consisting of a hub and an annular disk connected with said hub, said disk having centrifugal impeller blades on the upper side of said disk for generating a pressure by its rotation and being smooth on its under side, means for supplying liquid to the top of said impeller, and auxiliary thrust bearing means for sustaining any resultant thrust on said shaft.

24. In a deep well rotary pumping apparatus driven from above, the combination with means for suspending the weight of a long downwardly extending power shaft lid and pumping means connected therewith for pumping purposes, of an impeller having centrifugal vanes fixed on its upper urface and having a smooth lower surface, mounted on the shaft, a casing inclosing said impeller, an inlet in said casing for suppling a liquid to said centrifugal vanes above said impeller for creating an upward pressure on the under side of said impeller for relieving the downward weight of said long power shaft, an auxiliary bearing means for resisting downward thrust of said power shaft, and an outlet from said casing below said impeller for transmitting a small portion of liquid under pressure out through said casing and pipes to the power shaft bearings for lubricating said bearings.

25. In a deep well pumping mechanism, the combination of a pump casing located beneath the surface of the earth, a rotary impeller in said casing, a long power shaft drivenfrom' above and extending downward to said impeller, said power shaft being adapted to transmit power to said impeller, a liquid operated bearing located substantially at the top ofsaid power shaft for supporting said shaft and impeller on a liquid surface, said liquid operated bearing pressure means consisting of an impeller rigidly mounted on and near the top end of said power shaft and having a smooth under face and centrifugal vanes fixed on its upper side for creating an upward pressure on the smooth under side of said impeller for holding said power shaft in suspension when the pump is in operation, and auxiliary bearing means for'sustaining any resultant thrust along said power shaft.

26. In a deep well rotary pumping apparatus driven from above, the combination of means for suspending the weight of a long downwardly extending power shaft and pumping means connected therewith for pumping purposes, an impeller having centrifugal vanes fixed on its upper outer aaaaaei )ower shaftand an outlet from said casing elow said impeller for transmitting a small portion of the liquid out of said casing for lubricating the bearings of said long power shaft.

'27. In a deep well rotary pumping apparatus, the combination of means for sup;

porting the weight of rotating parts on a liquid surface consisting of an impeller having centrifugal blades fixed on its upper surface and having a smooth lower surface, a casing inclosing said impeller, an inlet above and an outlet below said impeller for transfer of liquid through said casing, said supporting means being so constructed and arranged as to create an unbalanced upward pressure on said impeller whereby said rotating parts are supported in a desired position.

28. In a deep well rotary pumping apparatus, the combination of means for supporting the weight of rotating parts on a liquid surface consisting of an impeller having centrifugal blades fixed on its upper surface and having a smooth lower surface,

a water-tight casing inclosing said impeller for transfer of liquid for lubricating purposes through said water-tight casing, said supporting means being so constructed and arrangedas to create an unbalanced upward pressure onsaid impeller whereby said rotating parts are supported in a desired position.

MATTHEW 'r. CHAPMAN.

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