US2250306A - Vertical pump and mounting - Google Patents

Description

July-,22, 19411, H..E. LA BOUR y 2,250,306

VERTICAL PUMP AND MOUNTING July 22 1941- v H. E. I BouR 2,250,306

l VERTICAL PUMP AND MOUNTING Filed -May 15. 1939 5 Sheets-Sheet 2 July 22, 1941. HjE, A BQUR y 2,250,306

VERTICAL PUMP AND MOUNTING Filed May 15, 1939 5 Sheets-Sheet 5 @T gg July 22, 1941. H. E. LA BOUR y -VERTICAL PUMP AND MOUNTING n Y Filed May 15, 1939.v 5 Sheets-Sheet 4 .Julyzm w41.' H. E. LA 'soun 2,2503

' VERTICAL PUMP AND MOUNTING Filed May 15. 1,939 5 Sheets-Sheet 5 Patented July 22, 1941 T OFFICE VERTICAL PUMP AND MoUN'rnvG nmy E. La pour, Elkhart, ma. Application May 15, 1939, VSerial No. 273,718

22 Claims.

- My invention .relates to centrifugal is particularly directed to the provision of a satisfactory mounting for vertical pumps.

While the preferred form of my invention herein illustrated is adapted to meeting the needs of a liquid sealed self-priming centrifugal pump disclosed in my co-pending application, Serial No. 262,239, iiled March 17, 1939, there are certain features .of the invention which are applicableto other forms of self-priming pumps, and to vertical centrifugal pumps of the non-self-prlming type. 1

Also, while a direct coupled motor-pump unit is hereinillustrated as the preferred embodiment, it is to be understood that the particular form of driving means is lnot of the essence of the invention. y

I amaware that vertically mounted pumps and motor-pump units are old, and I do not lay claim to such.

The specic problem with which the present invention is primarily concerned is the mounting of a liquid sealed self-priming pump of the type shown in the aforesaid application, so that minimum of iloor space is normally required for the unit, so that the pump mayi'unction to best advantage in `normal operation, and so that the iced.

In pumps handling corrosive liquids, the impeller is subject to greater mechanical and corrosion attacks than the other parts, and may require renewal. 'I-he impeller casing parts may also occasionally require renewal. In a vertically mounted unit oi' the prior art, no adequate propump may conveniently be inspected and `servvision has been made for convenient renewal of parts yand pulling apart a vertical pump of the prior art is diillcult and expensive.

According to the present invention', I suspend the pump by a mounting which reaches from the The-pump itself is arranged to be opened up by the removal of a cover plate which lies at the normal bottom of thepump.

The connected'motor or other parts extending.

normally above the pump may in some degree act pumps and' so that the load to be handled is greatly reduced and the moving of the pump intoposition to be inspected or serviced is greatly reduced and lessened. Becauseof the pivotal connection, the motor-pump unit, or the pump alone always remains connected to the base or mounting, and it may be lrested in either the vertical position in which it normally operates, or it may be rested in the horizontal position when so desired.

For mounting the pump upon a floor or foundation the stationary -hinge ypart is .preferably formed on a pedestal which is bolted to the floor, but the concept of hinging the vertical pump allows anadaptation to a wide variety of situations such as mounting the pump along the rim of a tank or container, or the edge of a pool or the like, with the advantages above enumeratedy of being able to swing the pump into horizontal position for servicing and the like. To assist in the ease of inspection and maintenance, the pump is provided with short inlet and discharge necks provided with ilanges which lie in parallel planes at right angles to the axis tance.

of the pivot. 'I'he intake and discharge pipes are also preferably provided with clamping anges readily detachable from the ilanges of the aforesaid necks, sothat when it is desired to swing thepumps into the horizontal position, the pipes do'not need to be moved except to be sprung apart far enough to allow the pump anges to be swung sidewise out of register with the flanges of the pipes.

The motor pump unit and the supporting member or base are arranged to be clamped together rigidly independently of the hinge connection be-v tween them.

The preferred form of the pump herein illustrated is of the type .which is vsealed by a liquid seal around the impeller shaft. Provision is made for draining lthe overflow liquid of this seal clear of the mounting, and the pump is so designed and related to the mounting that when it is brought to Va horizontal position such liquid as may be held in thepump adjacent the lmpeller shaft is given free opportunity to drain away and not to run along the impellerA shaft ,into the bearings. lParticularly in the case of 'a pump handling corrosive llquids this provision is oi' practical impor- Now in order to acquaint those skilled in the art with the manner of constructing and operating'a device embodying my invention, I shall describe. inv connection with the accompanying drawings, a specii'lc embodiment of the same.

y ment with each other. l

. Inthe drawings. l

Fig. 1 is a perspective view of a motor driven pump embodying my invention. This'view shows pump has been swung into horizontal position:

Fig. 4 is 'an elevational view looking endwise axially of the shaft from the right of Figure 3,

and showing the cover plate at the bottom ofthe pump removed;

Fig. 5 is a vertical sectional view through the particular pump herein shown, this section being taken on a, vertical axial plane parallel with the axis of the hinge on which the pump and motor unit is mounted:

Fig. 6 is a similar view taken at right angles to the section of Figure 5; and

Fig. 7 is an elevational view of the mounting of a pump at the side of a liquid containing tank.

'Referring flrst to Figures 1 and 2,the major parts of the device comprise the pumpul which is of the vertical type, 'and which has a generally cylindrical body with its impeller shaft extending vertically upward, the swinging bracket or frame 2, the driving motor 3, the supporting stand I which is hinged to the bracket frame 2 on the hinge pin B, and the means for rigidly edge if desired and swung out of the way when i the pump is to be brought to its horizontal position, but this is an optional detail. Obviously, also, a toggle mechanism connecting these parts which'would be made rigid in either the vertical position of the pump or the horizontal position of the pump may be employed, but not so simply nor toas good an advantage. The intermediate swinging bracket member 2 has a clamping ring flanged inwardly to provide a suitable support for the motor 3. This-mounting or clamping ring I5 is preferably flush on the outside with the cylindrical intermediate portion of .swinging bracket 2 for the sakeof appearance. Obviously, the flange might extend outwardly. The motor 3 herein shown is a self-Ventilating flame-proof motor which is substantially totally enclosed against moisture falling upon the same.' It has a bell member I8 provided with a clamping flange I-I which mates the ilange Il, these two parts being suitably bolted together. Quite 0bc'onnecting the'frame 2 and the vstand l, including the angle bracket B.

The stand 4 comprises a foot 1 which is adapted to rest upon the door or foundation and to be .bolted down to `such floor, foundation or other d suitable support. A stern or column 8 rises preferably vertically from the foot 1, the column be ing a relatively thin curved platelike body preferably cast integral with the base and with hinge portions 0--8 .disposed at the upper inner corner of the column or st em 8. In cross section the upright or column 8 is preferably arcuate for the dual purpose of providing the necessarylstrength and also to provide a hollow space into which the pump body I -is swung when the pump is in the position shown in'Figure 1. The stem 3 is gutter-shaped, that is, it has a concavity in one side and a corresponding convexity on the other side throughout thermajor part oi its length.

' At the rear edge of thel top oi.' the upright l, there is provided a pad or platelike 'extension III which is engaged with a cooperating 4foot portion of the angle bracket l. 'I'he swinging bracket Y frame 2 is provided with a padlike boss I2 and adapted tol be clamped tothe 'face ofthe angle bracket l when the pump is in vertical position or to match with the pad I0 at the top of `the upright 8, as shown in Figure 3 when the pump is swung to thehorizontal position. Bolts i3 extend 4through the corresponding part of theangle bracket 3 and the pad I2Jto hold these parts to. gether.` Bolts I4 areemployed for clamping the pad .I0 and thetcorresponding footportiomof the. angle bracket t together. Hence, it may be seen that by. removing the bolts I3 and Il, and removing the angle bracket `8, the pad I2.may b'e swung viously the form o! dthe motor employed for driving the pump may optionally be varied. Any suitable'formof vertical motor or even a driving pulley or sprocket gear might be employed if so desired. It is to be observed that the motor and the pumpl are approximately of equal moments about the pivot pin B. so that very little effort is required to move the pump from vertical to horizontal position or vice versa.

At its lower nd the bracket frame 2 is provided with a clamping ring I8 which is clamped to a suitable ringlike part I9 rigid with the pump I whereby the bracket frame 2 rigidly holds the motor and pump in axial alignment yat all times. When the unit isin the position shown in Figurel. th pump I is supported in suspension from the said swinging bracket 2'.

The pump has aV bearing housing 20 which holds a bearing section in suitable ball bearings for both endwise and lateral support, this bear'- ing housing 20 being provided with a clamping flange I! by which it is clamped to a cooperating flange 22 on the pump If The length of the bearing' housing 20 shown in Figure 1 isfgreater than that shown'in Figure '5,

but that is obviously a matter ofl choice for the `particular mounting employed.v

The intermediate shaft section 23 which is supported in the bearings in the housing 20 is coupled through the flexible coupling 2l to the vertical motor shaft.` The motor itself has suithousing 20 the unit is made very steady and free of vibration-` down intoregisterwith the plate br pad Il) and I the bolts I3 may then be inserted through 'the holes in the plate III and the holes matching therewith in the pad I2, and thus the pad I2and the plate i0 are 'connected rigidly together either through the angle bracket 8 or byfdirect engage- It will be apparent that the hinge and pad The intermediate shaft section 23 has a shrunk fit telescopically receiving the upper. end of the impellershaft 2l, which impeller shaft is made of a metal suitable for the intended use of the pump. A That is to say, if the pump is to handle corrosive liquids, the shaft 2l should be made of corrosion-resistant metal, whereas the intermediate shaft section 23 is not intended to be subiectto attack o1' the corrosive liquid and may uniformly be made of a suitable metal. f .The pump lI is a.. vertical self-priming centrifugal pump having'a cylindrical body portion,

as by means of the damping nut s4, the impeneritself may be readily removed and replaced. The

-provided wi'th two horizontally extending necks,

namely, the intake neck 26 and the discharge neck 21. These necks are provided with clamping anges 28 and 29, the outer faces of'which are parallel to each other, and at right' angles tothe axis of the hinge 5.

These necks are axially in the same line rather as an element of symmetry than of necessity.

Inlet pipe 32 and discharge pipe 33'are pro'- vided with mating flanges 34 and 35 which may be secured by bolts and the separable clamping rings 30 to the yclamping flanges 28 and 29 of the inlet and discharge necks, respectively. AsA

mayvbe seen in Figure 4, so long as the flanges 35 and 29 lieparallel and at right angles to the axis of the hinge pin 5, it is not necessary to remove the pipe 33, but merely to release the split clamping ring 30, whereupon the flange 29 on the neck 26 may be slid sidewise, free of the ange 35, without disturbing the discharge pipe 33. In likemanner, the ange 28 on the intake neck and the.lange 34 on the suction pipe may at the same time be slid past each other when the pump is to be swung 'from one position to the other. 'This is of great convenience, since frequently the pipes such as 32 and 33 are rigidly supported, and itis a matter of great inconvenience to be compelled to move them in order to remove the pump from between them. Obviously, suitable packing gaskets may be inserted, the parts being sprung sufficiently to insure that the gasket may readily be inserted, if desired. In the pumpillustrated, the inlet neck 26 leads into an inner concentric intake trapspace 36,

and the discharge neck 21 leads from the annular separator space 31 which surrounds the intake trap SPa/ce 36. The walls of these two functional spaces are substantially concentric vand ,the intermediate wall 38 is common to the two. At the lower end of this wall, there is disposedv the impeller housing generally designated as 39. It consists of two Apartsnamely, the top plate 40, which has the opening 42, so that the inside of the housing may communicate with the -bottom of the intake trap space 36 and the bottom or main.

housing member 43. 'I'he main housing member 43 is a composite member performing a number of functions. First ofall. it is' a cover plate for the bottom of the pump itself. It forms a complete wall closing oil the pump casing. At its central part it forms a bottom plate for the im` A pump constructed with the functional parts above described might be provided with a conventional form of packing gland, but the present y pump is provided with a liquid seal, as disclosed in my above mentioned copending application.

It is to be understood that the pump per se herein illustrated is 'described in full and claimed inthe said copending application, and reference ismade thereto for a detailed description of the same.

A peculiar virtue of the said form of pump is f the ability to mount the s haft bearings very close to the impeller itself. That is to say, the overhang from ythe bearing vhousing 2il'to the impeller 48 can be less than would be possible if a conventional form of packing gland employing brous orother removable packing were utilized. The bearing housing 20 is mounted on top of the pump. In the structure illustrated the housing projects into a'pocket 56 recessed into the top wall of the pump, for the saving of space axially. The pocket 56 leads to the outside by an open vcut or groove 51 shown more clearly in Fig. 6., The walls 58 of the, pocket 56 4provide a complete bottom, which, however,

,is extended in the shape of a cylindrical housit has a threaded end. extending just above the bottom wall'of'the pocket 59, this threaded end 4being engaged by a perforated nut 63 which forms both a slinger pocket and a holding means for the sleeve 62. The housing 59 is divided l into two compartments or chambers 64 and 65.

peller housing 39 and at its periphery it forms a i sealing flange 44, which is adapted to be clamped by the mating clamp 45l and flange 46 to form a liquid-tight joint. This cover member 43 has a angelike exten.`

sion 41 extending axially of the impellershaft 25 andsurrounding the impeller 48 with peripheral walls which are at suitable Vplaces interrupted to provide discharge and priming throats.

The specific form of the 'throat is .not i'orithe` purpose of this invention decisive. Suffice` it to say that there are in the present structure, two pairsof throats arranged on a diameter,` the an. terior throat represented by the discharge passageway 49 being arranged to discharge a mixture of gas and liquid above the horizontal ange or .partition 50 during priming and the auxiliary or ypriming throats which are adapted to receive liquid from the space or manifold 52 below the said ange or wall 50, as. represented by the throat 53.

The impeller will be revealed, as shown in Figure 4, by removal of the bottom plate 43. and since the impeller is releasably heldto `shaft 25 The chamber 65 communicates by a pair of passageways shown more clearly in Figure 6 with a separator space 31 to receive the liquidfrom the separator' space and deliver it through one of the passageways 66 into the chamber 65. The other passageway 61 allows circulation of liquid through the pocket 65 to keep it Washed clear, and to deliver a flow of liquid back into thev separa'tr. The sealing sleeve 6 2 has. a series of tangential slots leading into the clearance 68 for causing liquid from the supply chamber 65 to crowd against the shaft 25 and to be squeezed tight thereagainst and lengthwise of the shaft 25. 'I'he shaft 25 and the sleeve 62 have suiiicient clearance between them to prevent, rubbingof these parts and to permit such solids as are carried in the liquid to escape through said clearance. Obviously, this clearance mayfbe varied for' the diilerent services for which the pump is designed. A short distance labove the-clearance 68 to which these wedging ports lead is another clearance 6,9L with radially arranged portsvto permit the escape of liquid thrown from the shaft by the centrifugal action ofthe shaft upon such ports. Above the clearance 69 the sleeve extends with a minimum gap to a clearance 10 opening by way of a series '1lil of large Vports'into the relief or overflow chamber 6l, which, as will. be seen from Figure 6, extends by way of passageway 12 to the outside and to a `drain pipe 13 (see Figs, 2. and 6) to permit free escape of all liquid which passes through the liquidv sealingv gap between the shaft 25 and the central part oi' the sleeve 68.

It will 4be seen that the circulating passageways 66 and 61, the drain passageway 12, and the drain groove 51, which opens into it at 1l,

lie substantially on a diameter. Thus the drain passageway 12 'andthe groove 51 drain downinspection or for renewal ci an impeller, or for renewal oi' the pump housing, if necessary, all

that is required is to release theclamplng bracket 6, disconnect the suction and discharge pipes and swing the pump into horizontal position, whereupon, byrelease of, the clamping ring. the, closure-member 43 may he withdrawn, 'revealing the impeller and the top plate 48 ofthe housing,

'.as is clearly illustrated in Figure 4.. The imwardly when the pump is swung into the horizontal position as shown in- Figure 3, the circulatingy passagewafys 66 and 61 being substan-4 tially vertical, so that any liquid which may remain vin them is allowed to drain through the drain passageway 12 and the cut or groove 51.

The drain passageway- 12 has at its 'outer end 1 a flanged connection for the drain pipe 13 and the upright 8 has an opening- 14 therethrough' through which the pipe -13 may extend for draining away overflow liquid from the seal duringv operation. 4The pipe -13 is unscrewed when it is desired to bring the pump to the horizontal position.

)peller may then befrenewed as mayalso theV casing sections if desired, and the pump vagain closed up with minimum oi' difficulty. Since the shaft is liquid-sealed, scoring of the shaft is not nearly so likely to bev encountered as heretofore, with the re'sult that it may be expected to last a long time, butprovision ismade that if necessaryto' remove it. this may be done.

i Obviously,ifdesired, the lower end of the pump may be threaded against the foot 1 `or against V the upright 48, and in the illustrationl have shown in Figure 4 a boss. which may be engaged by the pump) i `ojany part thereof so -as tosteady this pump when thesclamping bracket 8 -is clamped into place.

The operation of vthis speciilcpump vmay he, briefly stated as that of-a self-priming pump,

in which liquid is trapped in the intake 3B, discharge 31, and within the impeller housing 39.'

As soon as the shaft is rotated by operation of the motor the liquid in the trap 36 is -driven over into the separator 31 and the function of carrying out air by recirculation of liquid is begun. 'At the same time, the discharge of liquid from the intake trap into the separator raises the gravity head of liquid on the pipes Gl'and 81 in the separator to a point where theliquid stands higher in the separato; than'it does in the liquid supply chamber- 65 of the seal for the shaft, and liquid is thereby introduced into the shaft seal at the portleading to the clearancev 88, and since the pump is then sealed and suction may be exerted, any escape of liquid along the shaft 25 will be in a downward direction back into the impeller. startsV to perform its priming loperation two cir-- culations are set up, one being the main circulation for carryingout air from the intake to the separator, and hence to the outlet. liquid returning peripherally into the impeller, the other being the circulation of'liquid from the separator to the liquid seal and back into the intake of the pump. Both of these circulations are in- Thus, when the pump The unit is-very steady as the center/of gravity lies wellylithln the foot 1; theparts are rigid;

s the alignment may be' accurately made,` and the, outboard overhang oi! the rotating parts is a minimum. f

I he pump may be filled by releasing the plate 48 6 (Fig. l) whichfv is normallyv held closed by yoke 81 and clamping screwI 88. Alternately a.

screw v.plug may be employed. It so it may be placed in the sidewall at the desired illling level.

1 do not wish to be nmitedlo the precise de tau's shown and described, as equivalents will at once Y ,b'e obvious to those skilled in the art by my above specific Adescription 'of the preferredl em- Iclaim: 1, y l. A vertical motor driven self-priming'pump unit adapted to be disposed wholly above the level ofthe liquid to be pumped c'omprlsingthe combination of a relatively short bracket'the length of which bracket isl independent ofthe relative level of the source of liquid to be pumped, a ver- Atical driving motor rigidly mounted on one end of the bracket, a pump rigidly mounted on the other 4.-end of the bracket, said motor and pump having independently'journaled axially aligned and coupled shaft's, anged releasable inlet and discharge i connections for-the pump independent ofthe bracket, said pump having a casing including a ternalcirculations and no liquid is lost thereby,

so that this operation might continue indefinitely.

In Figure 7 I have illustrated the manner of mounting the' unit of my invention atthe VVside of a liquid containing'tank. The tank -80 may' have a platform 82 extending across one side of the-same and to this a'platform 83 corresponding to the top of the upright 8, shown in Figures l and 2,"may be attached. The d rain pipe 13 is arranged to drain liquid directly backinto the tank 88, andV inlet and discharge pipes `84 and 85 are arranged in suitable locations. 'I'he clamping-bracket member 6 holds the plate or bracket releasably mounted closure plate on the lower end of the casing, removal'of said plate exposing the 'impellen and supporting means t0 -which said 'bracket is h inged,`said hinge being out of vline with the inlet and discharge connections and permitting the unitl to be swung from vertical operating-position into substantially a horizontal position clear of said inlet anddischarge connections when the latter are released.

2. In a fvertical motor driven self-priming pump unit the combination of a vertical driving 83 rigidly'to the-intermediate swinging frame '2... When desired the bracket 8 is released and the a unit swung into horizontal position on the hinge pin 5 as described in Vconnection with Figures l and 2. The intermediate swinging frame merriber 2 has the hinge part Il and the stationary plate or 'bracket 8 8 has the cooperating hinge 4part 8'.

Now.

when it is desired to open up the pump for its attached parts may be. swung fromnormally' vertical operating position to horizontal'position,

the pump having fluid intake and discharge connections independent of and disposed below said frame, and a releasable bridgingiframe member for rigidly joining the connecting frame and the supporting frame while the pump is in vertical operating position.

`from said flanges, a stationary support having a cooperating hinge part, a pintle for said hinge parts, the axis of the pintle being horizontal and normal to the planes of said angeswhereby the pump may be swung on the hinge from vertical position to horizontal position to bring the bot- 8. II'he combination ofy claim 6 wherein the pump has inlet and discharge necks extending in directions parallel to the axis of the hinge, inlet and discharge pipes aligned with said necks, said necks and pipes having mating flanges lying at right -anglesv to the axis of the hinge, whereby when said flanges are released the pump may be swung on its hinge without appreciably shifting theposition of said pipes. I

9. The combination of claim 6 wherein the base comprises a pedestal the body of which provides' a concavity into which the body ofl the pump is disposed when the pump is in l vertical position.

tom plate to readily accessible position and to hinge portion, a relatively short frame having a cooperating hinge portion, said hinge portions b eing articulated on a horizontal axis to permit the frame to be swung between vertical and horizontal positions, a vertical centrifugal pump clamped to the lower end of the frame and being disposed below and adjacent said hinge, a driving shaft for the pump having a bearing rigid'..

with said frame, said pump having a vbodyincluding a plate releasably clamped to the bottom ofthe body, said plate being removable for pulling the impeller only when the pump `is swung out of vertical position.

5. vIn combination a mounting base having a hinge portion, a frame having a cooperating hinge portion, said hinge portion being articulated'on a horizontal axis to permit the frame to be swung between vertical and horizontal positions, a vertical centrifugal pump clamped to the lower end of the frame and being disposed below and adjacent said hinge, a driving shaft for the pump having a bearing rigid with said frame, said pump having inlet and discharge connections provided with clamping flange surfaces disposed stantially inaccessible when the pump is in ver-V in substantially vertical planes at right angles axis to permit the pump to be swung to horizontal position to render the'closure member readily accessible, said hinge being disposed at one side of the axis of the shaft and near the topoi' the pump whereby when the pump is swung into horizontal` position it is as a whole raised above its normal position.

7.. The combination of claim `6 with means for iixedly clamping the pump to the base in either vertical or horizontal position independently of the hinge.

normal 10.- The combination of a vertical centrifugal pump having a body provided with a platelike closure on the bottom, an impeller in the body adapted to be uncovered by removal of said plate,

a shaft for the impeller, a pedestal comprising a c at top portion and a foot portion with a vertically extending stem generally arcuate incross section, la hinge member on the top portion adjaceni'fthe open side of said stem; a clamping pad at the other side of the top, said pump having a relatively short vertical extension parallel to the impeller shaft, said extension having a cooperating hinge member adjacent the top of the pump, said cooperating hinge member being articulated to said rst hinge member and having a clamping pad adapted to register with the clamping pad of the pedestal top when the pump is swung on said hinge into horizontal 4position, and a brace adapted to connect said pads when the pump is in vertical position, the pump body being adapted to be received into the concave position of the stem and the closure being subtical position.

11. A pedestal for supporting a vertical centrifugal pump comprising a foot member, a stem of gutter shaped cross section extending upwardly from one side of said foot with the concave side facing toward the other side of the foot and adapted to receive within its concavity a part of a vertical pump body, and a top portion extending across the top of the stem, said top portion having a hinge member at the edge of the top adjacent the concave side.

12. In combination with the pedestal of cl'aim 11 a relatively short pump supporting frame comprising ,an intermediate gutter shaped body with clamping rings at eachv end, a hinge member articulated with the hinge member of the pedestal adjacent 4the lower end of said body, said frameand said pedestal having means for permitting them to be clamped together rigidly in either extreme position of the frame.

13.. In combination a vertical, self-priming pump .comprising a generally cylindricaly body having a separator, an intake trap and an impeller housingcoaxial with each other, the separator surrounding the trap, the impeller housing lying below the intake trap and having a removable bottom plate to provide access to the inside of said housing, said pump having animpeller shaft and a liquid sealing'sleeve with a liquid-seal gap surrounding the impeller, a duct.

discharged upwardly along the shaft there being an open groove at the topof said body, the top of the sleeve draining into said groove, a support sided gutter-shaped mounting flange matching said face and secured against said face, a hollow frame member terminating at its lower end in a clamping -ring secured against the top of said mounting flange, and means including a pedestal having a foot extending under the center of gravityof the' pump, and a vertically extending member rigidly connecting said hollow frame member and said pedestal whereby the pump is mounted in sus-- pension over said foot.

15. A vertically mounted centrifugal pump comprising a pedestal having a foot member, a stem of gutter-shaped cross section extending upwardly from one side of the foot and havin! the concave side facing the opposite side of the foot, a top portion at the top of the stem, said top portion having a hinge member at the edge of the top adjacent the concave side, a pump supporting frame comprising an intermediate open body with a clamping ring at its lower end and a hinge member adjacent the top of the pump articulated with the hinge member of the pedestal, a centrifugal pump having a substantially cylindrical body closed at the top and having an opening at the lower end for access to the impeller, said opening being closed by a removable cover plate, the pump at its top being clamped to the clamping ring of the pump.

supporting frame, the pump-body-belng of a diameter largerthan the diameter of the frame whereby said body projects into the concavity of the stem and said cover plate liesover said pedestal foot when the pump is supported in vertical position, said frame and said pedestal having means for permittingthem to be clamped together rigidly in position ofsaid frame, and releasable suction and discharge connections on the pump body. l' 16. A vertically mounted centrifugal pump either vertical or horizontalmotor cla'rnp'edto the upper face. said pump and said motor each "having its own independently journaled shaft and said shafts being coupled together, the pump having suction and discharge connections with readily releasable couplings for suction and discharge pipes independent of theA bracket, said releasable couplings lying in substantially parallel planes on opposite sides of the pump at points remote from the pivot, a horizontal trunnion on said bracket between the motor and the pump adjacent the top of the pump, said bracket member being out of Contact with the liquid to be pumped and a supporting bracket member having 'a bearing cooperating with the trunnion to vpermit the unit to be swung into a horizontal position clear of said suction and discharge pipes when said pipe couplingsv are released.

418. A vertical motor-pump unit comprising -a relatively short vertical bracket member having coaxial clamping faces at its ends, a vertical centrifugal pump4 clamped tothe lower clamping face, a vertical motor clamped to the upper face,

said pump and motor each having its own inde-V pendently journaled shaft and said shafts being coupled together, the pump having suction and discharge connections with readily releasable couplings for suction and discharge pipes independent of thebracket, a horizontal trunnion on said bracket between the motorand the pump y and adjacent the top of the pump, and a vsupporting bracket member having a bearing cooperating with the trunnion to permit the unit to be swung into a horizontal position when said pipe couplings are released, wherein the vertical bracket and the supporting bracket member have mating clamping faces adapted to register for bolting together when the unit is swung into horizontal position, i

19. A vertical 'motor-pump unit -comprising a relatively short'vertical bracket member having coaxial clamping faces at 'opposite ends, a vertical centrifugal pump clamped to the lower clamping face,`a vertical motor clamped to the upper face, said pump -and motor each having its own independently journaled shaft and said l .shafts being coupled together, the pump having comprising a supporting member having floor engaging means, a vertical frame portion, and a hinge member at its upper end, a vertical pump able to expose the impeller, a pump supporting bracket clamped to the top of the pump body and having a hinge member adjacent the top of the having a substantially cylindrical body closed at the top and having an opening at the bottom, a combined closure and impeller housing-member clamped over the opening and being removsuction and discharge connections with readily releasable couplings for suction and discharge pipes independent of the bracket, a horizontal trunnion on said bracket between the motor and the pump and adjacent the top of the pump, and a supporting bracket member havinga bearing cooperating unit to be swung into a horizontal position when said pipe couplings are released,the vertical bracket and the supporting bracket members having mating yclamping faces adapted to reg-Y ister for bolting together when 'the unit is swung he supporting member and on said relatively short vertical bracket member having coaxial clamping -faces at -its ends, a self contained vertical centrifugal pump clamped to the lower clamping face. a self contained into horizontal position, and a connecting bracket having faces registering with and clampedto said first named faces to' hold the unit rigidly in vertical position.

20. In combination, a vertical centrifugal pump having a body comprising an impeller chamber with an opening in the bottom of the body for removal ,of ethe impeller. from said chamber, a closure plate clamped to the body over the opening, a pedestal having a hinge member at its -upper end, said pump having a cooperating hinge member adjacent to its upper end cooperating with the first hinge member to permit the pump body to be swung upward and into substantially horizontal position providing ready access to the vertical 1s closure plate for removal of the same.

with the trunnionto permit the i V21In col'nbination,l a vertical centrifugal pump comprising a generally vr,cylindrical body having an impeller chamber at its lower end' and having an opening in the bottom for exposing the impeller., a closure plate for the opening, a ped- Aestal having a hinge member at .its ltop, said y pump-body having adjacent its upper end a cooperating hinge member for suspending the body -below thehingeA with the closure plate adjacent to andsubstantially parallel with the oor, said hinge members permitting the body to -be swung angularly and `thereby raised upwardly to bring f impeller.

22. A supporting member for a vertical centrifugal self-priming pump, comprising a foot the closure plate into exposed position where it v' member adapted to be bolted-to a foundation, a stem rising from one side of the foot member, said stem being arcuate in horizontalcross section, said stem'having a substantially horizontal *aLAiaaotm vmay be readily removed to provide` accessto the

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