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Publication numberUS2525370 A
Publication typeGrant
Publication dateOct 10, 1950
Filing dateSep 1, 1945
Priority dateSep 1, 1945
Publication numberUS 2525370 A, US 2525370A, US-A-2525370, US2525370 A, US2525370A
InventorsAbraham Pollak
Original AssigneeAbraham Pollak
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cellar-draining pump
US 2525370 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Oct. 10, 1950 A. POLLAK 2,525,370

CELLAR-DRAINING PUMP Filed Sept. 1, 1945 2 Sheets-Sheet 1 2.9 jfi Al 1 i I W m .1 M/ J an] 4 a 5 1 6 l3 1 Q0 4- INVENTOR.


A. POLLAK CELLAR Oct. 10, 1950 DRAINING PUMP 2 Sheets-Sheet 2 Filed Sept. 1, 1945 ATTORNEY.

Patented Oct. 10, 1950 CELLAR-DRAINING PUMP Abraham Pollak, Linfield, Pa.

Application September 1, 1945, Serial No. 614,050 I 3 Claims. (Cl. 103

This, invention relates to improvements in cellar-draining pumps.

Pumps of this character are used in connection with suitable sumps. It is desirable that the maximum proportion of the water collected in the sump be removed, and heretofore, cellardraining pumps have been made of a large number of pieces or parts; conventional inlet-open ings have been provided with strainers and positioned in the bottom of the pump beneath the pump-casing, and impellers having vanes eX-- tending downwardly have had bearings on the pump casing on opposite sides of the impeller. The liquid in a sump usually contains a percent age of solid or foreign material that sometimes clogs the strainer and inlet-opening and in a I pump of the bottom-inlet type hereinabove re ferred to, the inlet opening, when clogged, is inaccessible and foreign matter cannot be removed without dismantling the piping or without lifting the pump out of its normal position, and, furthermore, in said bottom-inlet type of pump, operation of the impeller tends to stir up and prevent precipitation of solid matter to the bottom of the sump.

In accordance with my invention, I provide a highly-efficient pump made of relatively few parts, that will have an inlet in the surface of its impeller-housing so that the liquid supply will be taken from a sump-strata above the bottom and will not stir up or prevent precipitation of j solid matter; that will not only be much simpler, stronger and more durable than the multi-pieced prior-art pumps but also, because of its relatively thin flat body, will keep the liquid in the sump at a low level while enabling the immersing of the pump body in the liquid of the sump and the positioning of a screened pump-inlet at the top of the pump casing, where it is less likely to become clogged than in other constructions and where, in the event of clogging, is, without any dismantling of the piping, easily accessible for the removal of foreign matter.

Another feature of my invention is the provision in a cellar-draining pump of a pump body provided with an impeller comprising a disc having vanes extending upwardly, and a single shaft connected only with the upper surface of said disc and extending upwardly therefrom.

Another feature of my invention comprises the provision in a cellar-draining pump of a pump-body made from a single metal-casting and including a casing having a volute portion, supporting legs extending radially from the pumpcasing, and an upwardly-extendingaxial per- =tion comprising a bearing for the impeller shaft 7 and a housing for inlet openings.

Another feature of my invention is the utilizing of an. impeller mounting at the top surface only in which a lower bearing that cannot be lubricated by conventional means is eliminated, and the substitution of bearings so positioned at the top of the pump body as to be readily accessible and capable of lubrication by a single conventional grease reservoir connected to a lubricating channel positioned above the pumpcasing adjacent to the inlet.

Still another feature of my invention is the utilizing, in combination with an integral upwardly-extending axial portion at the top of the pump-body, including an inlet-housing having inlet-openings,'of a screen member for encircling the inlet housing and means for fastening the screen thereto.

. With these and other objects in view, the invention comprises the combination of members Fig. 1 is a view in side elevation of a cellardraining pump embodying my invention;

Fig. 2 is a View in front elevation of the pump" shown in Fig. 1;

Fig. 3 is a transverse section on the line 3--3 of Fig. 1;

Fig. 4 is a transverse sectional view on the line 44 of Fig. 1;

Fig. 5 is a vertical section substantially on the line 5-5 of Fig. 2;

Fig. 6 is a plan view of the bottom of the pump with the closure-plate for the impeller-housing removed;

Figs. '7 and 3 are top and face views of the switch mechanism, and its attaching and supporting means; and

Figs. 9 and 10 are complemental illustrative views of the switch and the operating-arm therefor.

Referringnow to these drawings which illustrate a preferred embodiment of my invention, 1 indicates a pump which, in the embodiment shown, comprises a pump-casing 2, composed of a hollow body in which the top and side casing Walls, the Volute portion 3, the feet 4 and the bottom rim 2 are formed-in one piece. The hollowbody of the casing 2 has an open bottom to provide an impeller-insertion opening 5 at said bottom and a closure cover 5 is provided for hermetically sealing the said insertion opening when the impeller is inserted and properly mounted in the casing 2, a gasket or sealing ring 5 being inserted between the rim 2 and said closure cover 5 In accordance with the preferred form of my invention, the pump casing 2 has at an axial position above said casing a cylindrical integral portion or member 6 comprising a combined inlet housing 8' and an impeller-bearing block I having a bearing bore T which is readily accessible and adapted to be easily lubricated by a suitable grease reservoir 8 communicating with said bearing bore '1 through a grease-bore S' in said block.

In the embodiment shown, the said integral axial portion 6 is also provided with a tapped socket 9 for the reception and fastening of the threaded lower end of a shaft-enclosing column Hi, which also has a motor-supporting function.

An impeller i i is inserted through the opening 5 and is enclosed within the casing. The said impeller IE is also preferably cast in a single piece embodying an impeller disc H vanes II extending upwardly therefrom and an axial hub li -also extending upwardly therefrom. A shaft 42 is mounted in the lubricated bearing bore i hereinabove referred to and has its lower end extending within and connected to said hub H As shown, I connect the impeller hub and shaft by tapping the hub li and threadin the end of the shaft E2 to engage said tapped hub 1 1. The column It, thus connected to the integral axially disposed cylindrical portion 6, extends upwardly a suitable distance and encloses the impeller shaft l2, to the upper end of which shaft a suitable motor IB is operatively connectet As illustrated, the disc of the impeller is provided with a series of perforations l I as shown in Fig. 6, and as the bottom surface i l of the impeller l i is spaced, as shown in Fig. 5, from the closure cover 5 these perforations permit liquid to pass through the impeller and to provide liquid on opposite sides thereof.

Electric motors used in horizontal position on various household appliances are conventional and relatively inexpensive, and I preferably adapt one of such motors for use in vertical position in my cellar-draining pump. This is accomplished by removing one of the conventional resilient mounting rings at one end of the motor and utilizing the annular supporting flange of such mounting in vertical position as a means of locating and supporting the motor in axial registration with the impeller-shaft i 2 and column Ii].

As illustrated, the motor-shaft i3 and the upper end of the impeller shaft 12 are connected together by a coupling element [4 and the shell or housing W of the motor and its shaft l3 are axially-supported on the top of the column I 3 by providing at the upper end of the column an adapter sleeve w having at its upper end a split mounting member iB which engages a stationary annular motor-mounting flange 13 on the motor shell orhousing W. The adaptor-sleeve i is provided with a suitable opening 40 to provide a suitable frame and support for the motor switch and its mounting and operating means hereinafter specified.

Suitable means is provided for automatically actuating the motor upon the filling with liquid of the sump and, for this purpose, a conventional switch I for the motor is mounted on the column IE] in position to be actuated by actuating means hereinafter specified. As illustrated, the switch I5 is fitted in a switch-supporting casin 15 fitted into the adaptor-sleeve opening Ill and fastened to the column by bracket-wings W. The switch has a conventional operating lever-arm l6, and I provide therefor an actuating fork l'l pivoted at N to the opposite sides of the switch casing [5 and connected to said conventional switch lever-arm [6 by the provision in the fork ll of a socket li into which the outer end of the switch lever-arm is seated. I now provide automatic means for swinging this fork I! about its pivots to throw the switch into operative and inoperative positions, respectively, for the purpose of starting and stopping the motor.

My preferred means for so operating the switch l5 comprises a vertical operating rod i8 passing through an aperture 11 in the fort: i? and suitably arranged between stop members l8 l8 on the rod 58. The rod is slidably mounted intermediate its ends at the outer bored end of a projecting supporting arm iil integral with a ring l9, fastened on the column iii. The rod It has at its lower end a float 28 which extends into the liquid in the sump and through its buoyancy will move the mounting rod l8 upwardly and the lower member of the stops [S -l3 at its upper end will raise the forl; H to throw the switch when such water rises in the sump to a predetermined level. Reversely, when the pump has reduced the water in the sump to a suitable level, the upper stop member l8 will engage the fork H to move the switch arm in the opposite direction to stop the motor. An adjustable movemen limiting stop it is fastened on the rod 53 above the supportin arm 9 to position the float and prevent excessive downward movement of the switch-actuating rod 13 and float 20.

In the preferred embodiment of my invention I provide a closure or cover which hermetically seals the bottom of the casing which is relatively thin or shallow in depth so that liquid in the sump will overflow the top of the casing in order to enter the dual inlet-openings which are screened by a cylindrical screen 2| which surrounds the integral inlet housing 6 and is fastened in place preferably by the grease reservoir 8.

In the embodiment shown I provide a cap or hood member 22 for the upper end of the motor, which also comprises the upper end of my cellardraining pump. This cap is provided with a central circular opening which fits over and engages a conventional mounting ring 23 which is conventionally found on motors and is usually composed of resilient material. The cap will thus be securely held in place on this motor mounting element.

The operation of the device will be substantially obvious from the above description. It will be seen, however, that applicants pump body or pump casing v ill be completely immersed in the liquid of the sump; that the feet will rest on the bottom of the sump and that because of the shallow depth of the pump-casing the inlet of the pump will be low enough to reach liquid relatively close to the bottom of the sump; that this construction, therefore, will not stir up mud or other foreign matter but will take relatively clear liquid. Furthermore, if the inlet of the pump becomes clogged it will be readily accessible for cleansing by the user without the dismantling of the outlet piping or other parts of the installation.

It will be seen from the above that I have provided an extremely simple, highly durable pump construction which, because of the inclusion in a single casting of the volute, the pump-casing with its axial member having an inlet housing, bearing block and column socket, as well as the integral feet or supporting elements, will enable manufacture of the device at an economical cost and will provide structural characteristics that will have much greater and durable qualities than similar devices heretofore manufactured, and also is of such simple construction and operation that once installed will remain in proper operation and will not get out of order or be easily broken.

My improved construction furthermore enables the parts which are likely to get out of order to be readily demounted so as to enable renewal thereof. The accessibility of the single bearing of the impeller shaft for ready lubrication (which cannot be accomplished in constructions in which the inlet aperture is at the bottom of the pump casing) also promotes facile fully-lubricated operation of the pump.

Having described my invention, I claim:

1. A cellar-draining pump embodying, in combination, an impeller having a fiat upper face provided with vanes, an impeller shaft, a pumpcasing forming a primary bearing-support for said impeller-shaft and having an integral annu lar inlet-housing portion provided with side openings above said impeller face for the admission to the casing of water, a, primary shaft-bearing in said annular housing comprising an impellershaft bearing-block portion extending diametrically across and vertically therethrough in opposition to said side openings and provided with an impeller-shaft-bore disposed at a right angle to the upper face of the impeller, said block having at its upper end a thrust-bearing surface, a collar on said shaft having a bearing against said thrust-bearing surface, said inlet housing portion also being provided with a column-mounting socket disposed concentrically with said shaft bore, a cylindrical shaft-enclosing column supported in said socket, a single auxiliary bearingsupport disposed at the upper end of said column, a motor provided with a shaft-bearing supported on said auxiliary support and having a drive shaft extending concentrically of said impeller shaft, and a coupling element connecting said impeller and motor shafts together.

2. A cellar-draining pump embodying, in combination, a pump casing embodying a relatively wide and shallow impeller housing having an open bottom and partially enclosed by outer and top walls formed respectively of a short perimetric 6', rim flange and a wide, flat and horizontally positioned ring-like portion having an axial open-- ing, said pump-casing also including a relatively slender inlet housing disposed centrally above said axial opening in said fiat ring-like horizontally positioned portion and communicating through said axial opening with the impeller housing, said inlet housing having side waterinlet openings positioned over said shallow impeller housing and at a low position on the pump, said inlet housing also being provided with a shaft-supporting bearing-block extending diametrically across said inlet housing in the path of admitted water, said bearing block being provided with an axial bore, an impeller comprising a substantially flat disc mounted in said impeller housing and having shallow vanes, an impeller shaft having its lower end connected to said impeller disc at the axis thereof and extending through the axial bore in said bearing block, a a

motor connected with said impeller shaft for rotating said impeller in said shallow housing, and a flat closure plate for the open bottom of said impeller housing.

3. A cellar draining pump as claimed in claim 2 in which a volute section is provided in the top wall of the impeller housing between said rimflange and the flat ring-like wall portion of said impeller housing, and pump-supporting feet are provided which project radially from the perimetric rim flange in a horizontal plane substantially registering with the bottom edge of said rim flange to increase the area of support of the pump while maintaining the shallowness of the impeller housing and the lowness of the inlet openings over the same.


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

UNITED STATES PATENTS Number Name Date 1,586,586 Swett et a1 June 1, 1926 1,801,103 Mummert Apr. 14, 1931 1,812,874 Hedglon July 7, 1931 1,883,266 Yoder Oct. 18, 1932 1,891,201 Hoff Dec. 13, 1932 1,909,578 Franke May 16, 1933 1,942,570 Reed Jan. 9, 1934 1,960,659 Burks May 29, 1934 2,018,092 Rickert Oct. 22, 1935 2,149,600 Guinard Mar. '7, 1939 Certificate of Correction Patent No. 2,525,370 October 10,1950

ABRAHAM POLLAK It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Column 1, line 28, before the word surface insert top;

and that the said Letters Patent should be read as corrected above, so that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 19th day of December, A. D. 1950.


Assistant C'ommz'ssz'oner of Patents.

Certificate of Correction Patent No. 2,525,370 October 10,1950

ABRAHAM POLLAK It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Column 1, line 28, before the Word surface insert top;

and that the said Letters Patent should be read as corrected above, so that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 19th day of December, A. D. 1950.


Assistant Commissioner of Patents.

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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2648790 *May 26, 1950Aug 11, 1953Prec Parts CorpElectric motor-driven unit
US2766696 *Nov 14, 1952Oct 16, 1956Tait Mfg Co TheSump pump
US2862452 *Apr 29, 1955Dec 2, 1958Tait Mfg Co ThePumps
US2875697 *Aug 5, 1953Mar 3, 1959Marine Products CompanySump pump
US3333545 *Dec 17, 1965Aug 1, 1967Morton Int IncCentrifugal pump
US4021145 *Jan 2, 1976May 3, 1977Genova, Inc.Sump pump assembly
US4049364 *Feb 13, 1976Sep 20, 1977Ace Envelope Manufacturing CorporationRemovable impeller assembly for printing press centrifugal pump
US4082033 *Oct 4, 1976Apr 4, 1978Fester Amos MAutomatic doughnut making machine
DE1043085B *Apr 24, 1952Nov 6, 1958Nikolaus LaingOrtsbewegliches, stabfoermiges, in Behaelter eintauchbares Handgeraet in Gestalt einer Kreiselpumpe
EP1229251A1 *Dec 13, 2001Aug 7, 2002Ozzie's Pipeline Padder, Inc.Pit pump
U.S. Classification417/423.12, 415/121.2, 310/66
International ClassificationF04D7/02, F04D7/00
Cooperative ClassificationF04D7/02
European ClassificationF04D7/02