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Publication numberUS2530028 A
Publication typeGrant
Publication dateNov 14, 1950
Filing dateOct 6, 1945
Priority dateNov 28, 1944
Publication numberUS 2530028 A, US 2530028A, US-A-2530028, US2530028 A, US2530028A
InventorsHenning Petersen Wilhelm
Original AssigneeAsea Ab
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Machine for washing clothes
US 2530028 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)




INVENTOR ATTORNEY Patented Nov. 14, 1950 MACHINE FOR WASHING CLOTHES Wilhelm Kenning Petersen, Vasteras, Sweden,

assignor to Allmanna Svenska Elektriska Aktiebolaget, Vasteras, Sweden, a corporation of Sweden Application October 6, 1945, Serial No. 620,670 In Sweden November 28, 1944 4 Claims.

In washing clothes by machine the clothes are treated by a washing liquid consisting of water and soap or other washing means generally in connection with a mechanical treatment of the clothes in order to increase the dirt dissolving eifect of the washing liquid. Many people are of the opinion that the mechanical treatment is so injurious that it accelerates the wear of the clothes. They consider that the mechanical treatment must be entirely omitted in the washing procedure, which undoubtedly is going too far. Certainly, it cannot be denied, that a powerful treatment of the clothes by various tools, by machine or by hand is detrimental to the clothes being washed, especially in the case of delicate materials, but on the other hand it cannot be denied, that a mechanical treatment adapted to the nature of the material to be washed, gives a result which is superior in regard to clean washing.

The present invention has for its object to provide a machine for the washing of clothes in which no solid parts or tools driven by machine act upon the clothes. According to the invention the clothes are exposed to simultaneous local intermittent currents of washing liquid directed obliquely upwards and inwards from nozzles on each side of the lower part of the long sides of the washing chamber. As the nozzles on the two sides of the washing chamber are placed in stag- U gered relation to each other, the clothes will bend in a number of curves, the number of which will depend upon the number of nozzles. Through this intermittent bending a certain rubbing action is eiTected between the different parts of the clothes. In order to get all parts of the clothes exposed to this rubbing action the clothes must turn around their longitudinal axis. This is effected by so arranging the nozzles that those on the one side have a transverse section increasing upwards, whereas those on the other side have a transverse section increasing downwards. Moreover, the main direction of the liquid currents from the one side may form a smaller angle with the horizontal plane than the main direction of the currents from the other side. The very mild treatment, to which the clothes are exposed by the procedure described above, is very eiiective.

It does not wear the clothes as in treatment with ing shows two such machines diagrammatically. Fig. 1 is a transverse section of a washing machine. Figs. la and 1b are cross-sections showing different forms of the nozzles 2, and Figs. 1c and 1d are similar views showing different forms of the nozzles 3. Figs. 2 and 3 show plan views of Washing machines with other forms of the washing chamber.

I indicates in Fig. 1 the washing chamber withits nozzles 2, 3 arranged at the bottom. These nozzles may have either oblong tapered section, as shown in Fig. 1a, or in order to obtain a better guiding of the liquid current may consist of a group of small nozzles arranged in the vertical plane, as shown in Fig. 1b. In both cases the nozzles 2 on the one side of the washing chamber have a section increasing upwards and on the other side 3 a section increasing downwards as shown at Figs. 1c and 1d.

The nozzles are connected to a pumping plant, known per se. As a suitable type of pump may be mentioned for instance a diaphragm pump, a piston pump or an intermittently working centriiugal pump, but other types of pumps may also be used. The drawing shows a piston pump 4 with housing 5 and piston 6, which is by means of the rod 1 connected to the lever 9, pivoted on the shaft 8. The free end of the lever 9 is actuated by a cam l0 and a spring II. The cam is rotatable either by hand or by means of an electrical motor. The purpose of the cam is to push the lever 9 downwards, thereby stretching the spring H and then to quickly release the lever. The piston 6 connected to the lever is thereby quickly pulled upwards pushing the washing liquid enclosed in the pump housing 5 out through the nozzles 2, 3. For every revolution of the cam ID the clothes [2 in the washing chamber I are exposed to an impact of washing liquid from every one of the nozzles. The impact of the liquid currents may be regulated by regulating the pull of the spring II by means of the screw arrangement I3. Between each stroke of the pump a part of the washing liquid flows back when the piston moves downwards.

The nozzles 2, 3 are inclined upwards. This and the form of their section causes the washing clothes to be lifted and turned in the direction of the arrow for every impact of the liquid. Moreover, the mouthpieces 2 on the one side are arranged in staggered relation to the nozzles 3 0n the other side. This is shown on Fig. 2, showing an oblong washing chamber. By this arrangement the clothes l2 obtain a laterally bending movement.

Fig. 8 shows a washing chamber I, forming a ring-shaped trough M, which is on two opposite sides provided with staggered nozzles 2, 8 obllquely arranged in the same direction. By this arrangement the clothes II, in addition to the turning. lifting and bending movement, described above, also obtain a propulsive movement in the trough.

A heating element ll, arranged for instance round the upper part of the pump housing 5, may be employed for heating the washing liquid to a temperature suitable for washing. If the washing machine is not fitted with a heating element, the washing liquid must be heated outside the washing machine before it is poured into the chamber I. Also the bottom of the container I may be provided-with one or more nozzles for the admission of washing liquid (as shown at 2' by dotted lines in Fig. 1) in order to assist the movement of the washing liquid.

I claim as my invention:

1. A washing machine comprising a container for clothes to be washed, nozzles arranged in staggered relation to each other on two opposite sides of the container, the nozzles on the one side having cross sections the width of which increases upwardly, and the nozzles of the opposite side having cross sections the width of which increases downwardly, an intermittently working pump for washing liquid, means con- 30 strength of the liquid currents.

4. A washing machine according to claim 1 comprising an additional nozzle at the bottom of the container for the admission of washing liquid thereto.


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

UNITED STATES PATENTS Number Name Date 764,613 Moreland July 12, 1904 1,605,412 Williams Nov. 2, 1928 1,789,272 Cowles Jan. 13, 1931 1,878,825 Caise Sept. 20, 1932 2,115,622 Dawson Apr. 26, 1938. 2,276,147 Birr Mar. 10, 1942 2,331,379

Dyer -Q Oct. 12, 1943

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US764613 *Sep 5, 1903Jul 12, 1904Jesse I MorelandWashing-machine.
US1605412 *Feb 16, 1926Nov 2, 1926Williams Brodie MWashing machine
US1789272 *Oct 14, 1927Jan 13, 1931Cowles Engineering CorpMethod of preventing tangling
US1878825 *Dec 6, 1930Sep 20, 1932Charles CaiseWashing machine
US2115622 *Apr 20, 1937Apr 26, 1938Dawson Clarence GWashing apparatus
US2276147 *May 3, 1940Mar 10, 1942J H NicoliniWashing method
US2331379 *May 17, 1940Oct 12, 1943Gen Motors CorpDomestic appliance
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2821075 *Aug 30, 1954Jan 28, 1958Keedy Esther AClothes washing machine
US3531093 *Mar 26, 1968Sep 29, 1970Shirsky Alexandr NikolaevichDevice for pulsating mixing of liquid reagents and liquid-and-solid reagents
US5100242 *Jun 14, 1990Mar 31, 1992Brian LattoVortex ring mixers
US7475698 *Apr 22, 2005Jan 13, 2009Steelkor, L.L.C.Kitchenware washers and methods of manufacturing the same
US7527062Apr 22, 2005May 5, 2009Steelkor, L.L.C.Kitchenware washers and methods of manufacturing the same
US7578305Jul 28, 2005Aug 25, 2009Steelkor, L.L.C.Kitchenware washers and related methods
US7763119Apr 22, 2005Jul 27, 2010Steelkor, L.L.C.Kitchenware washers and methods of manufacturing the same
US9265400Apr 25, 2012Feb 23, 2016Duke Manufacturing Co.Commercial kitchenware washers and related methods
WO2006115929A3 *Apr 18, 2006Mar 15, 2007James W BigottCommercial kitchenware washers and related methods
U.S. Classification68/190, 134/196, 366/267
International ClassificationD06F17/00, D06F17/04
Cooperative ClassificationD06F17/04
European ClassificationD06F17/04