Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1439365 A
Publication typeGrant
Publication dateDec 19, 1922
Filing dateMar 16, 1921
Priority dateMar 16, 1921
Publication numberUS 1439365 A, US 1439365A, US-A-1439365, US1439365 A, US1439365A
InventorsStanley Hazell John
Original AssigneeUnchokeable Pump Ltd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Centrifugal pump
US 1439365 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

i upon the y I T 0 all whom it may camera:

, rovements in and Relating to Centrifugal charge.

Patented Deg. l9, EQZZ.

Un t, star images as rarest otter-ca.

i JOHN sran'anr HAZELlL. or ronns'r earn, ioitnon, ENGLAND, Assrenor. 'ro

I ononoanaarn r-mar LrMrrEnor LONDON, ENGLAND.

fcnn'rarrnear. PUMP.

Application filed March 16, 1921. Serial No. 452,799.

be it known that 1, JOHN STANLEY HAZ- ELL, a subject of the King of Great Britain, residing in Forest Gate, London, England, have vinvented certain new and useful Imumps, of which the following is'a' specification.

This invention relates to centrifugal pumps in which the impeller is provided with a single port or passage, through which the liquid is drawn and; passes to the dis- It, will be obvious underfthese circumstances that when working there will be discharge side of the impeller a body of water the weight of which will act to destroy the balance of said impeller.

The present invention has for its object to provide means designed to overcome balancing of the impeller whereby the strains which would otherwise be set up updn the impeller and upon the shaft and bearing thereof are avoided.

According to this invention the impeller is provided with a closed chamber so placed and of such dimensions as to permit it to contain a body of liquid of such weight as to secure the balance-of the impeller.

. llnorderjthat the. invention may be the better understood drawings are appended in which l Fig. 1 is'a vertical section longitudinally of the shaft of a centrifugal pump embodying the present invention,

Fig. 2 is. a section to a larger scale" on line A A Fig, 1.

Referrmgto the accompanying drawings a indicates the pump casing provided on each side with covers b, b 'one of said covers I I) being open for the-entry of the liquid.

The impeller d, to which is secured in any convenient manner the inner end of the spindle c, is provided with a passage or port 3 one end of which communicates with the entry or suction whilst the other communicates with the discharge.

lhe body of the im eller is formed hol low as shown, the ho low portion thereof.

being provided with partitions e, c dividpassage or port. By this means the strains which would otherwise beset up in the impeller, causing unequal wear of the bearings for the impeller shaft, are avoided.


' 1. A. centrifugal pump comprising anoutercase, an inlet to said case, an outlet from said case, an impeller having a single passage, means for ensuring the balance of the impeller when in operation, comprising.

.a closed chamber formed in the body of the impeller, an opening for filling said chamber and a closure for said opening.

2. A centrifugal pump comprising an I outer case, an inlet to said case, an outlet from-said case, an impeller having a single passage, means for ensuring the balance of the impeller when in operation comprising a closed'chamber formed in the body of the impeller, an opening for filling said chamber and a closure for said opening, the dimensions of the chamber being such that it may contain suflicient liquid to secure the balance of the impeller. i

3; A centrifugal pump comprising an outer case having an inlet and an outlet; and an impeller in said case having a single. passage provided with means for insuring the balance of the impeller when in operation, said means comprising a closed chamber formed in the impeller and having an opening for filling said chamber and a closure for said opening.

"In witness whereof I have hereunto set my hand in the presence of two witnesses.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2741992 *Apr 10, 1950Apr 17, 1956Fairbanks Morse & CoBladeless impeller balance means
US2781000 *Dec 30, 1955Feb 12, 1957Waterous CoFoam pump
US3067960 *Dec 16, 1959Dec 11, 1962Georg NeidlPumping and comminuting machine
US3113734 *Dec 13, 1960Dec 10, 1963Georg NeidlApparatus for comminuting fibrous material
US3260216 *Aug 21, 1964Jul 12, 1966Goulds PumpsVenturi-centrifugal pump
US3684396 *May 4, 1970Aug 15, 1972Hg Ind IncCentrifugal fan with improved cut off means
US3732032 *Feb 16, 1971May 8, 1973Baggers LtdCentrifugal pumps
US3877834 *Nov 26, 1973Apr 15, 1975Speck PumpenSelf-priming centrifugal pumps
US6123507 *Nov 30, 1998Sep 26, 2000Smith & Loveless, Inc.Single port impeller
US7906068Feb 4, 2004Mar 15, 2011Cooper Paul VSupport post system for molten metal pump
US8075837Jun 26, 2008Dec 13, 2011Cooper Paul VPump with rotating inlet
US8110141Jun 26, 2008Feb 7, 2012Cooper Paul VPump with rotating inlet
US8178037May 13, 2008May 15, 2012Cooper Paul VSystem for releasing gas into molten metal
US8337746Jun 21, 2007Dec 25, 2012Cooper Paul VTransferring molten metal from one structure to another
US8361379Feb 27, 2009Jan 29, 2013Cooper Paul VGas transfer foot
US8366993Aug 9, 2010Feb 5, 2013Cooper Paul VSystem and method for degassing molten metal
US8409495Oct 3, 2011Apr 2, 2013Paul V. CooperRotor with inlet perimeters
US8440135May 13, 2008May 14, 2013Paul V. CooperSystem for releasing gas into molten metal
US8444911Aug 9, 2010May 21, 2013Paul V. CooperShaft and post tensioning device
US8449814Aug 9, 2010May 28, 2013Paul V. CooperSystems and methods for melting scrap metal
US8475708Mar 14, 2011Jul 2, 2013Paul V. CooperSupport post clamps for molten metal pumps
US8501084Mar 14, 2011Aug 6, 2013Paul V. CooperSupport posts for molten metal pumps
US8524146Sep 9, 2010Sep 3, 2013Paul V. CooperRotary degassers and components therefor
US8529828Nov 4, 2008Sep 10, 2013Paul V. CooperMolten metal pump components
US8535603Aug 9, 2010Sep 17, 2013Paul V. CooperRotary degasser and rotor therefor
US8613884May 12, 2011Dec 24, 2013Paul V. CooperLaunder transfer insert and system
US8714914Sep 8, 2010May 6, 2014Paul V. CooperMolten metal pump filter
US8753563Jan 31, 2013Jun 17, 2014Paul V. CooperSystem and method for degassing molten metal
US9011761Mar 14, 2013Apr 21, 2015Paul V. CooperLadle with transfer conduit
US9017597Mar 12, 2013Apr 28, 2015Paul V. CooperTransferring molten metal using non-gravity assist launder
U.S. Classification415/227, 416/144, 415/204
International ClassificationF04D29/22, F04D29/18
Cooperative ClassificationF04D29/2266
European ClassificationF04D29/22D2