US1470081A - Pump - Google Patents

Description

Patented Get. 9, "i923.

SMKUEL E. HUNTTING, DE ALAMEDA, CALIFORNIZ.

PUMP.

Application filed March 29, 1923. Eserial No. 628,445.

To (171 whom it may concern:

'Be it known that I, Saucer. E. HUNT- TING, a citizen of the United States of America, and a resident of Alameda, county of" Alameda. and State of California, have invented'a new and useful Pump, of which the following is a specification.

The invention relates to pumps and one of theobjects of the invention is to provide a pump of special value to contractors in clearing pits or sumps during construction work. Another object of the invention is the provision of a pump of the character described which will not lose its prime, that is a pump capable of functioning even though air is drawn into the pump chamber with the water. I

Another objectol' the invention the provision of a pump having the sturdy structure required for the heavy duty demanded and the hard' usage to which an apparatus of this sort is subjected. Another object of the invention is the provision of a pump of the character described which can be manufactured at low cost and which requires the minimum of attention to maintain it in ellicient working condition.

.My invention possesses other objects and features of advantage, some oi which, vwith the foregoing, will be set forth in the following description of the ini'cntion. it is to be understood that I do not limit myself to the showing made by the said description as I may adopt variant forms 01" my invention within the scope of the claims.

Referring to the drawing; Fig. l is an elevation of the pump, portions of the structure thereof being shown in section. Figs. 2 and 3 are vertical sections thru the lower and upper portions of the apparatus respectively, certain portions being omitted.

in Fig. 2. Fig. 4 is a horizontal section taken on the line 44- of Fig. 3. Fig. 5 is a vertical sectional view thru a portion of the structure, showing the method of securing the bracket arms to the frame rods. Fig. 6 is a plan view of the face of one or the thrust bearing elements, the plane in which the view is taken being in dicated bythe line 66 of Fig. 1.

The pump structure of my invention comprises an upper annular base 2, provided withv the strengthening flange 3, and upon. which a motor l for driving the pump is supported. A standard horizontal shaft type of motor is used because of its simplicity and cheapness. The bearing in one end cage is, if necessary, altered from a ring oiling to a wick oiling, bearing, and the other end cage of the motor is cmoved, and a spider-G, having a. wick oil ng bearing 7 at the center for the motor shaft 8, and a peripheral flange 9 of the same diameter as the motor frame, is secured by screws 11 to the motor frame. The flange 9 is also provided with an inturned flange 12 adapted to be secured by bolts 13 to the upper base, thus holding the motor rigidly thereon.

Seated about bosses 1% on the under side of the upper base are pipes or compression members 16, preferably three in number, which connect the upper base with the lower base 1'7. Rods 18 passing thru the pipes or compression members 16 constitute tension members for holding the bases rigidly to the pipe. T he ends of the tension members are threaded and secured by suitable nuts 19. Disposed on the pipe 16 are preferaoly two brackets 21. and 22 inwhich the pump shaft 23 is journaled. Thelower end of the motor shaft 8 and the upper end of the pump shaft 23 are threaded-andcone nected by a coupling 24, the members of a which are prevented from changing from their adjusted position on their respective shafts by suitable set screws.

Because the motor which I prefer to use is the llOl aontal shaft type, it is necessary to provi a thrust bearing to take the weight of the rotor. This thrustbearing is combined with the journal bearing in the bracket 21, and comprises a c0llar'26 in threaded engagement with the shaft 23 and adjustable thereon. A. suitable set screw fixes the pos sion 01": the collar on the shaft after adjustment. The under side of the collar engages bearing rings 27 resting on the upper face of the journal bearing 28, which is provided with a packing gland 29 at the lower end thereor to prevent the leakage of lubricant from the chamber 31 formed in the bracket; A cover plate 32 surrounding the collar 26 closes the top of the charmoer. ing that by the adjustments of the coupling 24 and the collar 26, either or both, the relative position of the motor shaft and pump shaft may be accurately fixed, and the posilion of the rotating or driving elements relative to the thrust bearing determined.

It will be understood from the forego- The height of the shaft 23 and the position of the rotor in the motor are thus adjustable.

The bracket 22 embodies a structure similar to that explained in connection with bracket 21 except that there is no thrust I bearing provided.

At the bottom of the frame the driving shaft 23 passes thru a hub or boss 33 provided with a suitable gland 34 which may be tightened to seat the packing 36 tightly about the shaft, or loosened so as to provide a passage between the shaft and the hub thru which air may escape. The lower end of the shaft 23 is threaded to receive a disk 37 which normally is spaced from the adjacent wall of the lower base 17. On the underside of the disk 37 are impeller blades 38, and the disk and blades together form the pump runner. Secured to the underside of the lower base 17 by bolts 39. so that it can be readily removed without disturbing the rest of the structure, is an annular plate 41 lying closely adjacent to the impeller blades. The aperture thru the plate is axially alined with the shaft 23 and runner, and is provided with a flange 42, the inside of which is preferably threaded as shown, to adapt it for connection with a pipe, in the event that it is desired to ex tend a pipe from the pump to the water to be handled instead of submerging the lower end of the apparatus as in the usual case. The plate 41 is also provided near its periphery with a flange 43 suitably tapped to adapt it for connection with a screen 44. Normally the screen is attached, and the pump used by immersing the lower end thereof in the water which is to be handled. The screen in this case functions to prevent the entrance of debris or other large particles into the pump chamber formed by the plate 41 and the lower base 17. The pump chamber is provided with a discharge port surrounded by a flange 46 adapting it to be connected to any suitable discharge line.

Itwill be noted that the lower portion of the pump casing is readily removable and that the runner may also be readily removed. This makes it easy to substitute difierent sizes of runners to adapt the pump for varying conditions of use. Note also that the screen is readily removable to pcrmita pipe to be screwed into the flange 42 in the event that the pump cannot be lowered into direct contact with the water to be moved.

Under conditions of ordinary use. that is to say when the pump is lowered into the pit which is to be draiucth both air and water may be drawn into the pump chamber. To this case the packing 36 is left loose so that the air drawn into the pump chamber may pass around and above the disk 37 and out thru the hub This enables the pump to continue to function without becoming air bound and losing its priming. Under cerconditions, it is desirable to protect the motor and I accomplish this by providing a hoodover the upper portion thereof. An annular plate 51 and a continuous plate 52 are spaced apart by suitable blocks and supported above the motor on pipes 53, thru which tension rods 54 pass to the upper base. The continuous plate 52 is provided at its periphery with a down-turned flange 55 which encloses the peripheral edge of the annular plate leaving an annular space therebetween. Depending from the edge of the annular plate is a flexible waterproof curtain preferably of canvas or comparable material 56. This curtain extends downwardly sufficiently to effectually protect the upper end of the motor. It should be noted that the spacing of the plates 51 and 52 provides a passage therebetween and that the heat of the motor in operation causes a circulation of air as shown by the arrows in Fig. 3. This circulation is aided by fan blades 57 which are secured to the upper face of the coupling 24. Thus the motor is kept cool, but effectually protected from the weather or falling objects.

A hook 58 by whichthe apparatus may be suspended in workingposition is aflixedto the plate 52 at its center.

In order to provide a simple yet effective 3 Way of lining up the portions of the frame,

I form the arms of the brackets 21 and 2-2 with apertures materially larger than the outer diameter of the pipe 16 which they are to enclose. and after alining the shaft 2 3 in its bearings. a fusible material such as babbitt metal, is poured into the space between the bracket arms and the pipe, forminga bushing 59 which rigidly holds the brackets in proper position. seating of thepipc 16 on the bases are thus compensated for, and accuracy in alinement of the bearings readily secured at a minimum cost.

I claim:

1. A pump comprising spaced upper and lower bases. rods connecting said bases, a

lower bases, rods connecting said bases, a.

Minor variations in the the upper base I air passages therein extending from the side of the plate nearest the motor to the exterior of the'plate and apron.

4. A pump comprising spaced upper and lower bases, rods connecting said bases, a

shaft journaled on said rods. a centrifugal pump runner fixed on said, shaft below the lower base, a motoron the upper base for driving said shaft, and a thrust bearing carried on said rods for carrying the weight of the motor rotor.

5. A pump comprising spaced upper and lower bases. rods connecting said bases, a shaft journaled on said rods. a centrifugal pump runner fixed on said shaft below the ower base, a motor on the upper base for driving said shaft, an annular plate disposed above said motor, a continuous plate spaced above said annular plate, and an apron depending from said annular plate and surrounding said motor.

6. A pump comprising spaced upper andlower bases, rods connecting said bases, brackets disposed on said rods, a shaft journaled in said brackets. a centrifugal pump runner fixed on said shaft below the lower base. a motor on the upper base, means for adjustably connecting the motor shaftto said bracket journaled shaft, and a thrust bearing disposed between said bracket joi1rnaled shaft and one of said brackets.

7. Ina pump, a frame comprising spaced upper and lower bases, hollow compression members separating'said bases, a tension member connecting said bases-in each, compression member, a bracket inclttding arms formed with apertures adapted to loosely enclose said compression members, a poured 'bushingin each aperture to fix the bracket on the compression members, a shaft journaled in said bracket and said lower base,

a pump runner on the lower end of said shaft and a motor supported on said upper base and connected to the upper end of said shaft.

8. In a pump, a frame comprising spaced upper and lower bases and rods connecting said bases, a shaft journaled in said frame, a motor supported on said frame for driving said shaft. a pump runner on the opposite end of said shaft adjacent the lower base and a flanged annular plate co-operating with the lower base to form a casing for said runner.

9. In a pump, a frame comprising spaced upper and lower bases and rods connecting said bases, a shaft journaled in said frame, a motor supported on said frame for driving said shaft. a pump runner on the opposite end of said shaft adjacent the lower base, a flanged annular plate co-operating with the lower base to form a casing for said runner, a threaded flange surrounding the aperture in said annular plateto adapt said casing for connection to a suction pipe. and a tapped flange adjacent the periphery of said annular plate to adapt said casing for connection to a covering screen.

Tn testimony whereof, I have hereunto set my hand.

SAMUEL E, HUNTTING.

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