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Publication numberUS1909578 A
Publication typeGrant
Publication dateMay 16, 1933
Filing dateDec 4, 1930
Priority dateFeb 5, 1930
Publication numberUS 1909578 A, US 1909578A, US-A-1909578, US1909578 A, US1909578A
InventorsCoard Franke John
Original AssigneeOctrooi Mij Hermes Nv
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1909578 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Ma 16; 1933;" J. c. FRANKE 1,909,578 4 PUMP Y Filed m. 4, 1930 2 sheets-$11651; 1

FIG. 1

Jzwemor: faerizgawiu y 1933 J. c. FRANKE 1,909,578



OCTROOI MAATSCHAPPI-T HERMES, .OF AMSTERDAM, NETHERLANDS, A CORPORA- TION OF THE NETHERLANDS PUMP Application filed December 4, 1930, Serial No. 500,090, and in Germany February 5, 1930.

M invention relates to pumps, and more particularly'to the type in which a unit including an engine and a pump is supported It is an object of my invention to so design a float pump of this type that it will not tip. To this end I arrange the engine in the float.

As a rule the engine is an electric motor.

It is old in pumps to combine the motor and the impeller into a pump unit, and to suspend the unit from the delivery pipe of the pump so that it is immersed in the liquid. In such pumps the stufling box between the motor and the pump is diflicult to hold tight, particularly if there is a considerable head of water on'the stuffing box. As a rule it is necessary to provide a compressor for maintaining a definite counter pressure at the stufling box. This drawback was eliminated by providing a float for the unit, and placing the unit on top of the float, with the stufling box above the water level. This type obviously V has a high center of gravity and therefore it must be held against tipping by suspending it from the delivery pipe, or by supporting it on the walls of the well in which the pump floats. Apart from this the unit is in an unfavorable position with respect to damage w by falling stones, dirt, and water.

By arranging the engine within the float as suggested by me, the center of gravity of the system is lowered and there is no longer- 5 any tipping tendency, and the stufling box 3 is relieved of the high head to which it is exposed in immersed pumps. The head acting on the stufling box is only equal to the distance from the stufling box to the water level.

It is another object of my invention to reduce still further, or to relieve altogether, even this small head.

To this end I provide a closed float with an opening, or openings, in its base.

By these means the entrapped air is placed under a certain pressure at one side of the 'stufiing box which counteracts, or balances, thi pressure due to the head at the opposite si e.

In the accompanying drawings a pump with a float having a closed base, and a float with openings in its base, are illustrated by way of example.

In the dr'awings Fig. 1 is an axial section through the float of the first type, V

Fig. 2 is an axial section through the base of the motor-and-pump unit,

Fig. 3 is a section on the line 3-3 in Fig. 2,

Fig. 4 is a plan view of the impeller, viewed from below,

Fig. 5 is a plan view of the impeller guide, also viewed from below, and

Fig.6 is an axial section through the float I of the second type.

Referring now to the drawings, 1 is the casing ofthe pump, 2 is the casing of the engine, here shown as an electric motor, and 3 is the float. The casings 1 and 2 are connected by a threaded sleeve 22-, and the easing 1 of the oump is connected to the float 3 by flanges 4 and 5 and a threaded ring 6.

The motor casing 2 is arranged in the float 3 and current is supplied to the motor by a cable 7 which is admitted through the cover of the float, and a rubber sleeve 8. 9 is a handle on the cover of the float. a

10 is the shaft of the motor, Fig. 2, 23 is a ball bearing in which the shaft is mounted to rotate, and 24 is a partition at the base of the pump casing l on which the bearing 23 is erected, with a stufling box 11 below the. bear ing. 12 is the impeller which is seated on the free end of the shaft 10, and equipped with spiral blades 13, Fig. 4, and 25 is a guide which is fitted on-the threaded end of the shaft 10 so as to hold the impeller 12 on a shoulder at the shaft. This guide has helical passages. 14 for supplying Water to the impeller 12 near its boss.

15, Fig. 5,-is the delivery passage of the pump, 16 is a connection at the end of the passage, and 17 is a delivery pipe at the end of the connection.

18 is a guard protecting the pump from access of grit etc., having openings defined by bars 19, and wire netting 20 extending across the openings.

The float 3 in Fig. 1 need not be closed at the top as the air in the float is not under pressure from the liquid. h is the head on the stuffing box 11.

The head is normallysmall so that thestufling box 11 will stand it. It may be desirable, however, to still further reduce the pressure on the stuffing box. A pump with means for reducing the pressure is shown in Fig. 6. Here the float 3 must beclosed at the top, and provided with openings 21 in its base. The openings admit water to the base of the float, and the water is kept away from the motor casing 2 by a tube 26. The water which penetrates into the float compresses the air in the float and a reaction is generated which counteracts the head it. The effective head on the stufling box is determined by the head it and the head h, from bearing 11 to the level of Water ii the float 3. The stuiflng box is re lieved altogether if arranged at the level of the liquid in which the float 3 is suspended.

I claim:

1. Aportable pump comprising a. float; and a unit including an engine arranged within said float, .a pump below said engine and having an inlet, and a guard having screened openings arranged below said pump to guard the inlet thereof.

2. A portable pump comprising a float, and a unit including an engine and a pump supported by said float, said engine being within said float.

3. A portable pump comprising a closed float, with an opening in its base, a unit including an engine and a. pump supported by said float, said engine being within said float, and packing means intermediate said engine and said pump.

In testimony whereof, I afix my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2525370 *Sep 1, 1945Oct 10, 1950Abraham PollakCellar-draining pump
US2827268 *Dec 7, 1953Mar 18, 1958Adolf Staaf GustafLiquid transporting apparatus
US3400664 *Aug 26, 1966Sep 10, 1968Can Do Products LtdFloating pump
US4789307 *Feb 10, 1988Dec 6, 1988Sloan Donald LFloating pump assembly
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US4966522 *Nov 18, 1988Oct 30, 1990Mitsubishi Denki Kabushiki KaishaIn-tank type fuel pump
US5393418 *Jul 13, 1992Feb 28, 1995E. Beaudrey & CieWater intake, in particular for industrial installations
US5397466 *Jun 18, 1993Mar 14, 1995Mytrex Industries, Inc.Circulating filter and aerator system for use in aquaculture
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US5860796 *Aug 7, 1996Jan 19, 1999Parker-Hannifin CorporationFuel pump assembly and filter element therefor
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US7648629 *Feb 4, 2008Jan 19, 2010Alaina Carole ProkopchukPortable water filtration device
US8297952 *Jul 9, 2010Oct 30, 2012Cheng-Kuan WuWater inlet unit for an amphibious pump
US8651058 *Jul 2, 2010Feb 18, 2014Casa Grande Fish Farms JV, LLCOrganic fishery systems
US20090217992 *Feb 29, 2008Sep 3, 2009Schlumberger Technology CorporationSubsea injection system
US20110123357 *Feb 21, 2009May 26, 2011Grundfos Management A/SFloatable pump unit
US20110247970 *Apr 5, 2011Oct 13, 2011Michael EvinghamPortable Pump And Filter Assembly For Use In Pools, Spas And Open Bodies Of Water
US20120006423 *Jul 9, 2010Jan 12, 2012Cheng-Kuan WuWater Inlet Unit for an Amphibious Pump
EP2438974A1 *Oct 5, 2010Apr 11, 2012Keld GabelgaardBuoyant cleaning assembly
WO2004101438A2 *May 12, 2004Nov 25, 2004Tesomas Holdings LlcMethods and systems for removing floating solid waste from the surface of a watercourse
U.S. Classification417/61, 417/423.9, 210/242.1, 415/7
International ClassificationF04D13/06
Cooperative ClassificationF04D13/066
European ClassificationF04D13/06F