US2570452A - Water pump for automobiles and for other uses - Google Patents

Description

Oct. 9, 1951 HQUGUE 2,570,452

WATER PUMP FOR AUTOMOBILES AND FOR OTHER USES Filed Nov. 14, 1947 FIG 7 6 62 I I I Patented Oct. 9, 1951 'i' FFICE WATER PUMP FOR AUTOMOBILES AND FOR OTHER USES Maurice Hougue, Champigny, France Application November 14, 1947, Serial No. 785,886

InF

The invention relates to an improvement in water pumps for automobiles and other uses and its purpose is to solve in durable fashion the problem of tightness which has hitherto not been solved in satisfactory manner.

The majority of water pumps for automobiles, or, at any rate, those which are currently used, obtain-tightness by means of a stufiing box which sooner or later loses its tightness through soaking or through the action of the water.

To remedy this lack of tightness, it is necessary to use rather high pressures on the stufiing box, this pressure requiring to be increased periodically thus absorbing a relatively large amount of force which may represent a fairly high fraction of power and moreover it brings about a rapid wearing of the shaft.

' The purpose of the invention is to solve this problem of tightness whilst suppressing the stuinng box. For this purpose, the shaft of the pump is supported by two ordinary ball bearings which is already an advantage over the usual pumps. These two, ball bearings are located in the inside of a sleeve and tightness is eifected by means of an annular sealing member which by simple pressure closes this sleeve. Possibly, a ring presses on this point, this ring being located in the body of the pump and providing a complete tightening effect. Finally, the tightness on the shaft is produced by a sealing member which also presses on the ring due to the mechanical pressure exerted by a spring. The arrangement forms a system which can be readily taken apart and the whole of which can form a spare part of reduced size and weight, this advantage being particularly valuable in the colonies and in regions where the local conditions impose a heavy duty on water pumps.

The invention will now be explained in greater detail with reference to the accompanying drawings, but the invention is not limited to this example, being capable of numerous modifications, which, while applying the idea of the invention, are merely alternative forms of constructions thereof. In these drawings:

Figure 1 shows one embodiment of the invention in axial section; and 7 Fig. 2 is a side elevation and Figure 2' a front elevation of a washer forming part of the device shown in Fig. 1.

Fig. 3 is a side elevation and Fig. 3' a front elevation of a ring forming part of the device shown in Fig. 1.

Fig. 4 is a side elevation and Fig. 4' is a front 9 Claims. 308-1871) rance December 12, 1946 elevation of a sealing member forming part of the device shown in Fig. 1.

Fig. 5 is an elevational view of the shaft forming part of the device shown in Fig. 1.

The shaft 1 of the pump, which is provided at its end with a turbine wheel 2, is supported by two ball bearings 3. These ball bearings are separated by a distance ring 4, and are located in a sleeve 5. This sleeve is itself contained in a housing forming part of the casing ll'of the pump, and this housing is closed at the end opposite to the pump by a locking nut 6, the sleeve itself bearing on a sealing member 7 of any suitable material, for instance felt treated with graphite. At the pump end, the sleeve is closed by a washer 8, of lead for example, which is pressed against the sleeve by the action of the locking nut 6. The system is thus ensured against any lateral play, whilst at the same time fluid tightness is ensured. A ring I!) of bronze is forcefitted into the body of the pump.

Figure 2 shows the washer 8 in detail; and Figure 3 shows the ring It] in detail. In a recess H in the ring I!) is located a sealing member [2, of graphite for example; and a sealing member [3 surrounding the shaft and frictionally engaging the same is also interposed between a spring 9 and the ring It upon which it bears, this sealing member 13 being made for example of a fibrous material impregnated with phenol-formaldehyde. Figure 4 shows a detail view of the sealing member E3.

The Whole is held together by two nuts I l and I5; and a pulley I6 is keyed to the shaft I. Fig- .ure 5 shows a constructional detail view of this shaft.

The spring 9 may be replaced by a sleeve of artificial rubber, for example, forming a compression spring.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. In a pump having a rotary impeller supported on one side by a shaft running in bearings, in combination, a casing having a shoulder; a housing extending from said shoulder; a shaft extending through said housing; a washer engaging said shoulder; a sleeve arranged in said housing; bearings arranged in said sleeve for said shaft; means for forcing said sleeve into engagement with said washer; a ring force-fitted into said housing; an annular sealing member arranged for frictional engagement of said shaft; and means for forcing said annular sealing member into engagement with said ring.

2. In a pump having a rotary impeller supported on one side by a shaft running in bearings,

-in combination, a casing having a shoulder; a

housing extending from said shoulder; a shaft extending through said housing; a washer engaging said shoulder; a sleeve arranged in said housing; bearings arranged in said sleeve for said shaft; means for forcing said sleeve and one of said bearings into engagement with said washer; a ring force-fitted into said housing; an annular sealing member arranged for frictional engagement of said shaft; and means for forcing said annular sealing member into engagement with said ring.

3. In a pump having a rotary impeller supported on one side by a shaft running in bearings, in combination, a casing having a shoulder;

a housing extending from said shoulder; a shaft extending through said housing; a washer engaging said shoulder; a sleeve arranged in said housing; bearings arranged in said' sleeve for said shaft; means for forcing said sleeve into engagement with said washer; a ring force-fitted into said housing; an annular sealing member arranged for frictional engagement of said shaft; and resilient means for forcing said annular sealing member into engagement with said ring.

4. In a pump having a rotary impeller supported on one side by a shaft running in bearings, in combination, a casing having a shoulder; a housing extending from said shoulder; a shaft extending through said housing; a washer engaging said shoulder; a sleeve arranged in said housing; bearings arranged in said sleeve for said shaft; means for forcing said sleeve into engagement with said washer; a ring force-fitted into said housing an annular sealing member arranged for frictional engagement of said shaft and hearing on the outer face of said ring; and means for forcing said annular sealing member into engagement with the'outer face of said ring.

5. In a pump having a rotary impeller supported on one side by a shaft running in bearings, in combination, a casing having a shoulder; a housing extending from said shoulder; a shaft extending through said housing; a washer engaging said shoulder; a sleeve arranged in said housing; bearings arranged in said sleeve for said shaft;

means for forcing said sleeve and one of said bearings into engagement with said washer; a ring force-fitted into said housing; an annular sealing member arranged for frictional engagement of said shaft and bearing on the outer face of said ring; and resilient means for forcing said annular sealing member into engagement with the outer face of said ring.

6. In a pump having a rotary impeller supported on one side by a shaft running in bearings, in combination, a casing having a shoulder; a housing extending from said shoulder; a shaft extending through said housing; a washer engaging said shoulder; a sleeve arranged in said housing; bearings arranged in said sleeve for said shaft; means for forcing said sleeve into engagement with said washer; a ring force-fitted into said housing; an annular sealing member made of a fibrous material impregnated with phenolformaldehyde and arranged for frictional engagement of said shaft; and means for forcing said annular sealing member into engagement with said ring,

7. In a pump having a rotary impeller supported on one side by a shaft running in bearings, in combination, a casing having a shoulder; a housing extending from said shoulder; a shaft extending through said housing; a washer engaging said shoulder; a sleeve arranged in said housing; bearings arranged in said sleeve for said shaft; means for forcing said sleeve into engagement/with said washer; a ring force-fitted into said housing; an annular sealing member arranged for frictional engagement of said shaft; means for forcing said annular sealing member into engagement with said ring; and a second sealing member fitted into a recess of said ring.

,8. In a pump having a rotary impeller supported on one side by a shaft running in bearings, in combination, a casing having a shoulder; a housing extending from said shoulder; ashaft extending through said housing; a washer engagin said shoulder; a sleeve arranged in said housing; bearings arranged in said sleeve for said shaft; means for forcing said sleeve into engagement with said washer; a ring force-fitted into said housing; an annular sealing member arranged for frictional engagement of said shaft; means for forcing said annular sealing member into engagement with said ring; and a second sealing member made of graphite fitted into a recess of said ring.

9. In a pump having a rotary impeller supported on one side by a shaft running in bearings, in combination, a casing having a shoulder; a housing extending from said shoulder; a shaft extending through said housing; a washer engaging said shoulder; a sleeve arranged in said housing; bearings arranged in said sleeve for said shaft; means for forcing said sleeve and one of said bearings into engagement with said washer; a ring force-fitted intorsaid housing; an annular sealing member made of a fibrous material impregnated with phenol-formaldehyde and arranged for frictional engagement of said shaft and bearing on the outer face of said ring; and resilient means for forcing said annular sealing member into engagement with the outer face of said ring.

MAURICE I-IOUGUE'.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,740,475 Murdoch Dec. 24, 1929

Images