US1493893A - Water-circulation pump for automobile engines - Google Patents

Description

May 13 O. l. PRRCE Filed July 27, 1925 2 sheets-snee?. 1

, A//, D\1 Y XML Liu-m5 my.; .l

lnuentor m'pw n Fyttorneg1 May 13 1924. 1,493,893

o. l. PRICE WATER CIRCULATION PUMP FOR AUTOMOBILE ENGINES Filed Jul'J 27. 1923 2 Spams-Sheet 2 Inventor A @Q30/mba B9 M ttomeg Patented May 13, 1924.

UTN .11T yEDI S T'A T E OSBORNEQI.' PRICE, JOF FREDERICK,"MARYLAND WATERLCIRCULATION -PIZTMP Application led J'u1y'27,

fo allzu/zam t may concern.' i

Be it known that I, OsonNE I. PRICE, aI citizeny of the United States; Vresiding at Frederick, in the county of yFrederick and State. of Maryland, have invented a certain new and useful Improvement in a IVater Circulation Pump for `Automobile Engines, of nvhich the following-iis a specification.

My invention relates broadly to automobile enginesfand more particularlyy to a con` struction vof Water circulating pump arranged to be conveniently'installed 4;in a thermo-Siphon j Water cooling system-for au. tomobile engines.

Oneof the objects of my inventionis to provide'a construction ofwater circulating pump lfor automobile engine coolingsystems having its. elements kreach individually r movable .to facilitate the Yreplacement of ele-` ments, for repair, and i adji-istment.

Another object ofthe invention is to provide #a construction of Water. circulating pump arranged `to be quickly` installed-in .a thermofsiphon water coolingisystemvfor au- 1 tomobile engines having itsl parts *arranged so 'that the lubricating system. in tliepump is prevented being floodedor reachedby the cooling system` by slight adjustment .which may be madefrom time to time throughout the 'life of the pump.-

Another objectof the rinvention is to pro-` vide a pumpconstruction in which the drivingshaft is substantially packedv and Water sealed and. provided` With a circuitous .path f formed .y by the.. .pump shaft 'bearing imme-` diatelyiadjacent the impeller, end of .the

pump shaft whereby Wateryfromtlie Water. cooling-system v.is positively ,prevented `from entering the-puinpshaft bearing-and lood-,4 ing.- the ylubricating system of .the pump.

A still further objectof the invention .is to provide a Wateicirculating pump for thermo-Siphon Water cooling -systems for automobile engines in which the pumpis provided `with -aii adjustable and. removable sleeve l.bearing capable of longitudinal: ad.- justment-against the packing` adjacent the` impeller? endr of the;pump `to insurea Water tight-bearing regardless of natural `Wear of the'packing underconditions of long use throughout tlie life yof 4the` pump..v

UvinVent-imn Will be `more yclearly under-A stood from the following specificationand by refeience to theyy accompanying,drawings in which:

Figurelis across sectional, view .showing g FOR "AUTOMOBILE ENGINES.

1923.` SeriaI N0. 654,194.

the construction ofmy Water circulation pump for automobile engines; Fig. 2 is aV Fig. 3 is a vieiv of the pump looking in the direction ofthe two blade impeller which Iliave, designed to secure eii'icient Watercirculation; Fig. l is a cross sectional view@ taken on line of Fig. l showingithe yar-V rangement of the pump shaft4 and key `which I employ for longitudinally yadjusting the,L

sleeve bearinglin the pump andmaintaining the pump shaft, in desired positionby means ofthe adjustable,packingnutg` Fig.,5 is a cross Asectional view takenjon line 5-5 0fy Fig. l showing ,theivick oiler which I employ in lubricating;- the pump shaft and bearing; Fig. dis adiagrammatic View .illus-.j

tratingthe arrangement ofmy Water circu latingpuinp in a Water cooling system for automobileengines; Fig. ,7 is a cross sectional vieiv of, a modified construction of Water `circulating. pump embodying my inj line l8 8 of Fig.; 7 v illustrating the arrangefy vention; Fig. 8 is a cross sectional view on ment of the sleeve bearing employed in my pump construction; -andFig.S) is a perspecfv tive view yofthe removable sleeve bearing which vI employ in the-Umain body of thel pump `With. one end abutting the packing@i immediately ladjacent the entrance of .the

pump, shaft into the 4water Vconduitand they j other end abuttingv the adjustable ...packingl nut.

Myinvention finds lmrtcular application f be `used as an-auxiliary to engine cool-V ingsystemsl yliavingan insuliicient form of positively. driven Water `circulating pump.

Whcreg-it is foundthat an insufficient raidiating, .surface has beenyprovided for the particular conditions Vwhich the engine may InV thermo-.Siphon y coolingqsystems the cooling Water often beA `required to fulfill.

reaches a temperature Vclosely adjacent or equal to the boiling point. Continued .operey ation ofthe engine with the.. circulating Wateigat higligtemperature tends `to over heat:

and actually burn the lubricating oil7 even that of the best quality, and the piston and rings tend to expand to such a degree, especially when deprived of the lubricating oil that they seize in the cylinder. This has the tendency of scoring the walls of the cylinders and the friction produced tends to bind the moving parts so tightly that serious results may ensue such as the sticking of the pistons, the burning out of the bearings, and the warping of the valves` all such contingencies working to the detriment y of the engine. With overheated lubricating oil there is a tendency for the explosive gasoline mixture in the cylinders to pass the piston rings into the oil pan resulting in loss of compression and inl'ierent loss of power.

In order to meet and overcome the serious disadvantages in thermo-Siphon water cooling systems as above referred to I have developed the present construction of water circulation pump with a view of maintaining the temperature of the cylinders below the danger point but at the same time to have it as high as possible to secure maximum power from the gas burned.

Referring more particularly to the drawings reference character 1 represents the main body of the water circulating pump which may be approximately angular in contour having a flange 2 at one end for convenient connection to the water cooling outlet 3 on the automobile engine 4L. The other end of the main body 1 may be provided with a fiange coupling 5 for connection with the top hose 6 leading to the upper radiator tank 7 included in the usual thermo-Siphon water cooling system on automobiles. The main body of the pump is provided with a substantially tubular cylindrical cast portion 8 extending into the water conduit formed by the main body 1 as represented at y9. The cast portion 8 extends outside of the main body which has been represented by reference character 10; The cast portion 8 forms a substantial extended bearing for the pump shaft 11. The pump shaft 11 is screw threaded at its extremity which projects into the water conduit formed by the main body 1 on which is secured a two blade impeller 141. A shoulder 15 is formed on the shaft 11 against which the impeller 14 abuts when the lock nut 16 is screwed upon the end of the shaft at 12. The other end of the shaft 11 is flattened at 17 to enable a pulley 18 to be secured rigidly thereon by means of set screw 19. The shaft 11 is centrally located and aligned within the cast portion 8 by means of a longitudinal, slidable and removable sleeve bearing 20. The cast portion 10 is provided with a groove indent 21 which cooperates with an extended lug 22 on the removable sleeve bearing 20 to preventrotativey movement thereof. .The end of the sleeve bearing 20 adjacent the water conduit through the main body 1 is pro- 'vided with an annularly chamfered face 23 which bears against the packing 24; secured against the wall 25 of the cast portion 9 forming a positive seal to prevent the entrance of water into the bearing from the water conduit in the main body 1.

A wick oiler 26 is provided which screws into a bore 27 in the cast portion 10 containing lubricant which is continually supplied to the shaft 11 and the bearing 2O by means of wick 28 which is constantly urged by spring 29 against the shaft 11 as represented at 30. The wick 28 passes through aperture 31 in the sleeve bearing 20.

In Fig. 1 I have illustrated a method of maintaining the impeller shaft 11 in alignment in bearing 20. The shaft 11 .is provided with an annular groove 32 in which a U shaped key 33 is inserted. The cast portion 10 is screw threaded at 34 to enable the packing nut 35 to be screwed therein. The inner face of the packing nut 35 bears against the portion of the face of key 33 which extends beyond the groove 32. It will be readily seen that rotation o'f the packing nut 35 in one direction will advance the bearing sleeve 2O in the direction of the impeller compressing the packing 24 to insure the proper degree of seal against the entrance of water into the bearing. This positive seal eliminates the danger of water entering the bearing and flooding the wick oiler. Vithout this positive seal immediately adjacent the conduit 1 there would be a tendency for the water to float out or displace the oil from the cup 26 by reason of the oil being lighter than the water thereby endangering the pump by continued operation on a dry bearing.

In Fig. 7 I have shown the shaft y11 provided with a shoulder'y The cast portion 9 is likewise provided with a cooperating shoulder-37. The spacing sleeve 38 is provided between the rear of the impeller 14.- and the end of the cast portion 9 to prevent the shaft from going backward. The cooperating shoulders 36 and 37 prevent the shaft from sliding forward. By this arrangement it is unnecessary to groove the shaft 11 in order to maintain it in alignment. The packing nut 35 bears directly upon the end of the bearing sleeve 20 enabling the sleeve to be longitudinally adjusted against the packing at the point of entrance of the shaft into the water conduit. The construction illustrated in Fig. 7 provides a circuitous path immediately adjacent the shaft at the impeller end of the pump by reason of the shoulders 36 and 37 increasing the seal against the entrance of water into the bearing.

In applying `my pump 'construction to thermo-Siphon systems it is only necessary to interpose the pump between the outlet of the engine cooling system and the top hose as represented in Fig. 6, a belt 40 being looped over pulley 18 and over the fan belt drive pulley 41. My invention permits rapid disassembly and insertion of'individual pump parts and elements of the bearing when repairs or replacements are necessary.

lVhile I have described my invention in a certain limited embodiment it is to be understood that modifications may be made and that I intend no limitations upon my invention other than are imposed bythe scope of the appended claim.

Having thus described my invention, What I claim and desire to secure by Letters Patent of the United States is as follows A Water circulation pump for automobile engines comprising in ycombination a main body forming a Water conduit, a tubular cast portion extending into and out of said conduit forming an inner and outer bearing support, a sleeve bearing carried Within said support substantially shorter than said support, a shaft through said sleeve bearing, an impeller secured to the end of said shaft Within said main body, an annular groove in said shaft Within said outer bearing support, a U shaped removable key carried in said groove said key having a rim extending beyond the circumference of said shaft, said rim abutting one end of said sleeve, an annular screw threaded member carried by the extremity of said outer bearing support having a face abutting the opposite side of the rim of said U shaped key whereby said shaft and sleeve bearing may be longitudinally moved by rotation of said screw threaded member.

OSBORNE I. PRICE.

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