US2619826A - Emptying pump for washing machines - Google Patents
Emptying pump for washing machines Download PDFInfo
- Publication number
- US2619826A US2619826A US91107A US9110749A US2619826A US 2619826 A US2619826 A US 2619826A US 91107 A US91107 A US 91107A US 9110749 A US9110749 A US 9110749A US 2619826 A US2619826 A US 2619826A
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- US
- United States
- Prior art keywords
- container
- impeller
- casing
- strut
- washing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
- D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
Definitions
- This invention relates to washing machines of the kind intended primarily for washing household clothes, fabrics and the like, and comprising a container or tub adapted to contain washing liquid, i. .e. water with or without soap orother ingredients to assist washing, and an impeller within the container arranged to be ro tated by suitable hand or power-driven driving mechanism so as to agitate the contents of the container.
- washing liquid i. .e. water with or without soap orother ingredients to assist washing
- an impeller within the container arranged to be ro tated by suitable hand or power-driven driving mechanism so as to agitate the contents of the container.
- the exact form of the impeller may vary widely. For instance, it may be of the type described in this specification, havin asymmetrical radial ribs in its operating surface, or alternatively may be of symmetrical type as described in Brit ish patent specifications Nos. 34,853 of 1946 or 5,430 of 1947, new British Patent Numbers 624,- 187, accepted May 30, 1949, and 624,191, accepted May 30, 1949, respectively, or of any other suitable design.
- a domestic washing machine of the type specified means is provided for emptying the container of washing liquid comprising a casing in the form ofa cap shaped to fit closely over the exposed 2
- the invention may be carried into practice in var ous ways, but one specific embodiment will now be described by way of example with refface of the impeller and make a seal with the I adjacent wall of the container round the impeller, and having an inlet near the middle of the casing communicating with the lower part of the container and an outlet from the peripheral portion of the casing communicating with an outlet pipe.
- the casing may be held in position against a side wall of the container and enclosing the impeller by securing means braced against the opposite side wall of the container.
- securing means may comprise a telescopic strut mechanism, or alternatively a toggle-operated strut mechanism.
- Part of the strut may conveniently act as a communicating passage from an inlet inlet, and the strut has a tubular portion at one end adapted to fit over the spigot.
- FIG 3 is a fragmentary view partly in sect1on drawn to an enlarged scale illustrating a gziz lnirnmg mechanism for expanding a telescopic
- the invention is a li to a domestic washing machine comprising z t i .or container A to contain the washing liquid and the clothes to be washed, having opposite vertical side walls A and A and an impeller B mounted as shown in Figure l with its axis roughly horizontal in a circular dish-like recess A in the central portion of one vertical side wall A
- the washing container A is provided with a washing impeller B like the impeller disclosed in United States Patent No. 2,478,188, issued August 9, .1949.
- the impeller B is in the form of a disc, one face of which is a surface of revolution close to the side Wall A of the container and on the-other face of which are a number oi radial fingers or projections, 28 of smooth wavehke profile.
- the impeller isrotated electrically and the radial fingers act to circulate and disturb the washing liquid for the normal washing operation.
- the impeller B When it is required to empty the washing liquid from the container, the impeller B is enclosed by a detachablecasing C in the form of ahalf pump-case, which fitsclosely round the impeller and cooperates with the recessed side wall A to which it is pressed, so as to form a complete housing around the impeller andto convert the latter into a form of centrifugal pump.
- the casing has an inlet C communicating with the lower part of the container through a flexible inlet pipe D so as to draw up liquid, and an out"- let C from which a flexible hose E carries the pump liquid out of the container to a suitable place suchas a kitchen sink.
- the inlet (I - is in the form of a central passage in a coaxial hub or tube C projecting from the casing C.
- a sealing washer C of rubber or other suitable elastic material lies in a groove in the casing C and serves as a seal between it and the side wall A
- the casing is secured in position by being braced against the'side wall A containing the impeller by a telescopic strut F which bears against the opposite side wall A of the container.
- the strut comprises two tubular pieces F and F arranged to telescope one within the other, of which the outer end of the piece F fits over the hub C of the casing while the outer end of the piece F carries a disc-shaped end piece F which serves to distribute the pressure of the strut on the side wall A
- the tubular pieces F and F of the strut F are united by a catch F see Figure 3, of the over center toggle type providing for relative longitudinal movement of these pieces and serving to latch them in their expanded condition.
- the catch F is a known type such as that illustrated in United States Patent No. 1,575,028, is
- the tubular piece F has its end closed by a baffle wall F and has a spout F projecting from its side wall as shown in Figure 1. Onto the spout F is fitted the inlet pipe D, so that the piece F acts as a passage connecting the pipe D to the passage C of the casing.
- the casing C In operation, when it is required to empty the liquid in the container, the casing C is placed in position over the impeller B with the strut projecting from it towards the opposite wall A The catch is then operated over its dead-centre so as to cause the telescopic strut to expand and brace the casing firmly in position against its wall A by corresponding pressure against the opposite wall A The impeller is then rotated electrically and acts together with the casing C as a centrifugal pump to empty the liquid from the container.
- a domestic washing machine of the type comprising a container adapted to contain washing liquid, a disc-like impeller mounted adjacent to a side wall of the container where it will normally be submerged in the washing liquid, and driving means to rotate the impeller so as to agitate the contents of the container, of means to empty the container of washing liquid comprising a casing in the form of a cap shaped to fit closely over the exposed face of the impeller and make a seal with the adjacent wall of the container round the impeller, an inlet near the middle of the casing to communicate with the lower part of the container, an outlet from the peripheral portion of the casing, and an outlet pipe leading from the said outlet.
- a domestic washing machine of the type comprising a container adapted to contain washing liquid, a disc-like impeller mounted adjacent to a side wall of the container where it will normally be submerged in the washing liquid, and driving means to rotate the impeller so as to agitate the contents of the container, of means to empty the container of washing liquid comprising a casing in the form of a cap shaped to fit closely over the exposed face of the impeller and make a seal with the adjacent Wall of the container round the impeller, an inlet near the middle of the casing to communicate with the lower part of the container, an outlet from the peripheral portion of the casing, an outlet pipe leading from the said outlet, and securing means designed to be braced against the opposite side wall of the container to hold the casing in position enclosing the impeller.
- Apparatus as claimed in claim 2 in which the said securing means comprises a toggleoperated collapsible strut designed to be braced against the opposite side wall of the container to hold the casing in position enclosing the impeller.
- Apparatus as claimed in claim 2 including a telescopic collapsible strut designed to be braced against the opposite side wall of the container to hold the casing in position enclosing the impeller.
- Apparatus as claimed in claim 4 including an over-centre locking mechanism by which the said telescopic strut can be extended and locked in the extended and braced position, the said locking mechanism comprising one or more cam surfaces on one part of the telescopic strut, one or more co-operating cam followers engaging said cam surfaces and carried by another part of the telescopic strut, and a stop to limit the travel of the said cam followers when past the dead-centre position where the strut is fully extended.
- Apparatus as claimed in claim ,5 including an inlet pipe, and a generally tubular part of the strut which acts as a communicating passage between the inlet pipe and the inlet of the casing.
- -A device for forming a pump housing around a washing machine impeller mounted adjacent a wall of a washing machine container comprising, a casing having a peripheral sealing portion extending therefrom in one direction adapted to engage and seal against a wall of a washing machine container around an impeller, saidcasing being formed with a fluid inlet passageway and a fluid discharge passageway, a, collapsible strut secured to said casing and extending therefrom oppositely to said sealing portion adapted to bear against a wall of a washing machine container to secure said casing around an impeller, and said strut including locking means for secure ing said strut in rigid condition.
- a device for forming a pump housing around a washing machine impeller mounted adjacent a wall of a Washing machine container comprising, a casing having a peripheral sealing portion extending therefrom in one direction adapted to engage and seal against a Wall of awashing machine container around an impeller, said casing being formed with a fluid inlet passgeway and a fluid discharge passageway, a pair of telescopically engaged parts forming a collapsible strut secured to said casing and extending therefrom oppositely to said sealing portion adapted to bear against a wall of a washing machine container to secure said casing around an impeller, and means for latching said telescopically engaged parts in fixed relation to each other.
- said latching means is of the over center type by which the telescopically engaged parts of said strut may be extended and latched, said latching means comprising one or more cam surfaces on one part of the telescopic strut, one or more cooperating cam followers on another part of the telescopic strut engaging said cam surfaces, and a stop to limit the travel of the said cam followers when past the dead center-position where the strut is fully extended.
- a device as claimed in claim 9 including an inlet pipe, and a tubular part of said strut connected to said inlet pipe and the inlet passageway in the casing to form a communicating passage therebetween.
Description
1386- 1952 A. G. COLSTON EMPTYING PUMP FOR WASHING MACHINES Filed May 3, 1949 I n venior Jrcke'a/a dodf'ray (blszon A iiorney Patented Dec. 2, 1952 'EMPTYING PUMP FOR WASHING MACHINES Archibald Godfray Colston, Perivale, Grecniord,
England, assignor to Hoover (Washing Machines) Limited, Perivale, Greenford, England,
a British company Application May 3, 1949, Serial No. 91,107 In Great Britain -May3, 1948 11 Claims. 1
This invention relates to washing machines of the kind intended primarily for washing household clothes, fabrics and the like, and comprising a container or tub adapted to contain washing liquid, i. .e. water with or without soap orother ingredients to assist washing, and an impeller within the container arranged to be ro tated by suitable hand or power-driven driving mechanism so as to agitate the contents of the container.
The lnventioniis particularly, though not exclusively, applicable to a washing machine as set forth in United States patent application No. 598,287, nowPatentNo. 2,478,188, issued August 9,1949, which described a machine having a con tinuously rotating impeller, mounted in or adiacent to a side wall of the container where it will normally be submerged in the washing liquid, and comprising a disc, the whole periphery of which lies close to the side wall of the container. The exact form of the impeller may vary widely. For instance, it may be of the type described in this specification, havin asymmetrical radial ribs in its operating surface, or alternatively may be of symmetrical type as described in Brit ish patent specifications Nos. 34,853 of 1946 or 5,430 of 1947, new British Patent Numbers 624,- 187, accepted May 30, 1949, and 624,191, accepted May 30, 1949, respectively, or of any other suitable design.
Thus according to the present invention, in a domestic washing machine of the type specified, means is provided for emptying the container of washing liquid comprising a casing in the form ofa cap shaped to fit closely over the exposed 2 The invention may be carried into practice in var ous ways, but one specific embodiment will now be described by way of example with refface of the impeller and make a seal with the I adjacent wall of the container round the impeller, and having an inlet near the middle of the casing communicating with the lower part of the container and an outlet from the peripheral portion of the casing communicating with an outlet pipe.
. The casing may be held in position against a side wall of the container and enclosing the impeller by securing means braced against the opposite side wall of the container. Such securing means may comprise a telescopic strut mechanism, or alternatively a toggle-operated strut mechanism. Part of the strut may conveniently act as a communicating passage from an inlet inlet, and the strut has a tubular portion at one end adapted to fit over the spigot.
erence to-the accompanying drawings, in which Tigure l is a sectional elevation of the conzarilnir of a domestic washing machine in which p ying means accordln to thi has been fitted, g s embodiment Figure 2 is an end elevation of the casing of the emptyin means looking .in the direction shown by the arrow II in Figure 1, and
Figure 3 is a fragmentary view partly in sect1on drawn to an enlarged scale illustrating a gziz lnirnmg mechanism for expanding a telescopic In this embodiment the invention is a li to a domestic washing machine comprising z t i .or container A to contain the washing liquid and the clothes to be washed, having opposite vertical side walls A and A and an impeller B mounted as shown in Figure l with its axis roughly horizontal in a circular dish-like recess A in the central portion of one vertical side wall A The washing container A is provided with a washing impeller B like the impeller disclosed in United States Patent No. 2,478,188, issued August 9, .1949. The impeller B is in the form of a disc, one face of which is a surface of revolution close to the side Wall A of the container and on the-other face of which are a number oi radial fingers or projections, 28 of smooth wavehke profile. The impeller isrotated electrically and the radial fingers act to circulate and disturb the washing liquid for the normal washing operation.
When it is required to empty the washing liquid from the container, the impeller B is enclosed by a detachablecasing C in the form of ahalf pump-case, which fitsclosely round the impeller and cooperates with the recessed side wall A to which it is pressed, so as to form a complete housing around the impeller andto convert the latter into a form of centrifugal pump. The casing has an inlet C communicating with the lower part of the container through a flexible inlet pipe D so as to draw up liquid, and an out"- let C from which a flexible hose E carries the pump liquid out of the container to a suitable place suchas a kitchen sink. The inlet (I -is in the form of a central passage in a coaxial hub or tube C projecting from the casing C. A sealing washer C of rubber or other suitable elastic material lies in a groove in the casing C and serves as a seal between it and the side wall A The casing is secured in position by being braced against the'side wall A containing the impeller by a telescopic strut F which bears against the opposite side wall A of the container. The strut comprises two tubular pieces F and F arranged to telescope one within the other, of which the outer end of the piece F fits over the hub C of the casing while the outer end of the piece F carries a disc-shaped end piece F which serves to distribute the pressure of the strut on the side wall A The tubular pieces F and F of the strut F are united by a catch F see Figure 3, of the over center toggle type providing for relative longitudinal movement of these pieces and serving to latch them in their expanded condition. The catch F is a known type such as that illustrated in United States Patent No. 1,575,028, is
sued March 2, 1926. When the strut F is latched in expanded condition, the casing C is firmly seated against the wall A and the end piece F is braced against the opposite wall A The tubular piece F carries a pin F which rides in cam slots F" in the portion of the tubular piece E which is telescopically received in the Piece F The cam slots F extend in opposite directions on opposite sides of the piece F and have hooked end portions F providing over center pockets receiving the pin F for latching the strut in expanded condition. The strut F is expanded and contracted by manually rotating the pieces F and F relatively to each other. The sealing washer C has suflicient resilience to permit the pin F to be operated over center into the hooked end portions F on the slots F".
The tubular piece F has its end closed by a baffle wall F and has a spout F projecting from its side wall as shown in Figure 1. Onto the spout F is fitted the inlet pipe D, so that the piece F acts as a passage connecting the pipe D to the passage C of the casing.
In operation, when it is required to empty the liquid in the container, the casing C is placed in position over the impeller B with the strut projecting from it towards the opposite wall A The catch is then operated over its dead-centre so as to cause the telescopic strut to expand and brace the casing firmly in position against its wall A by corresponding pressure against the opposite wall A The impeller is then rotated electrically and acts together with the casing C as a centrifugal pump to empty the liquid from the container.
What I claim as my invention and desire to secure by Letters Patent is:
1. The combination with a domestic washing machine of the type comprising a container adapted to contain washing liquid, a disc-like impeller mounted adjacent to a side wall of the container where it will normally be submerged in the washing liquid, and driving means to rotate the impeller so as to agitate the contents of the container, of means to empty the container of washing liquid comprising a casing in the form of a cap shaped to fit closely over the exposed face of the impeller and make a seal with the adjacent wall of the container round the impeller, an inlet near the middle of the casing to communicate with the lower part of the container, an outlet from the peripheral portion of the casing, and an outlet pipe leading from the said outlet.
2. The combination with a domestic washing machine of the type comprising a container adapted to contain washing liquid, a disc-like impeller mounted adjacent to a side wall of the container where it will normally be submerged in the washing liquid, and driving means to rotate the impeller so as to agitate the contents of the container, of means to empty the container of washing liquid comprising a casing in the form of a cap shaped to fit closely over the exposed face of the impeller and make a seal with the adjacent Wall of the container round the impeller, an inlet near the middle of the casing to communicate with the lower part of the container, an outlet from the peripheral portion of the casing, an outlet pipe leading from the said outlet, and securing means designed to be braced against the opposite side wall of the container to hold the casing in position enclosing the impeller.
3. Apparatus as claimed in claim 2 in which the said securing means comprises a toggleoperated collapsible strut designed to be braced against the opposite side wall of the container to hold the casing in position enclosing the impeller.
4. Apparatus as claimed in claim 2 including a telescopic collapsible strut designed to be braced against the opposite side wall of the container to hold the casing in position enclosing the impeller.
5. Apparatus as claimed in claim 4 including an over-centre locking mechanism by which the said telescopic strut can be extended and locked in the extended and braced position, the said locking mechanism comprising one or more cam surfaces on one part of the telescopic strut, one or more co-operating cam followers engaging said cam surfaces and carried by another part of the telescopic strut, and a stop to limit the travel of the said cam followers when past the dead-centre position where the strut is fully extended.
6. Apparatus as claimed in claim ,5 including an inlet pipe, and a generally tubular part of the strut which acts as a communicating passage between the inlet pipe and the inlet of the casing.
7. -A device for forming a pump housing around a washing machine impeller mounted adjacent a wall of a washing machine container, comprising, a casing having a peripheral sealing portion extending therefrom in one direction adapted to engage and seal against a wall of a washing machine container around an impeller, saidcasing being formed with a fluid inlet passageway and a fluid discharge passageway, a, collapsible strut secured to said casing and extending therefrom oppositely to said sealing portion adapted to bear against a wall of a washing machine container to secure said casing around an impeller, and said strut including locking means for secure ing said strut in rigid condition.
8. A device for forming a pump housing around a washing machine impeller mounted adjacent a wall of a Washing machine container, comprising, a casing having a peripheral sealing portion extending therefrom in one direction adapted to engage and seal against a Wall of awashing machine container around an impeller, said casing being formed with a fluid inlet passgeway and a fluid discharge passageway, a pair of telescopically engaged parts forming a collapsible strut secured to said casing and extending therefrom oppositely to said sealing portion adapted to bear against a wall of a washing machine container to secure said casing around an impeller, and means for latching said telescopically engaged parts in fixed relation to each other.
9. A device as claimed in claim 8 in which said latching means is of the over center type by which the telescopically engaged parts of said strut may be extended and latched, said latching means comprising one or more cam surfaces on one part of the telescopic strut, one or more cooperating cam followers on another part of the telescopic strut engaging said cam surfaces, and a stop to limit the travel of the said cam followers when past the dead center-position where the strut is fully extended.
10. A device as claimed in claim 9 including an inlet pipe, and a tubular part of said strut connected to said inlet pipe and the inlet passageway in the casing to form a communicating passage therebetween.
11. A device as claimed in claim 10 in which said casing includes a central hub projecting from the 15 2,341,894
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 557,300 Barber Mar. 31, 1896 807,971 Skinner Dec. 19, 1905 2,331,379 Dyer Oct. 12, 1943 Barifli Feb. 15, 1944
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2619826X | 1948-05-03 | ||
| GB985351X | 1948-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2619826A true US2619826A (en) | 1952-12-02 |
Family
ID=27614886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US91107A Expired - Lifetime US2619826A (en) | 1948-05-03 | 1949-05-03 | Emptying pump for washing machines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2619826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3071077A (en) * | 1958-11-25 | 1963-01-01 | Ingersoll Rand Co | Centrifugal pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US557300A (en) * | 1896-03-31 | Centrifugal pump | ||
| US807971A (en) * | 1905-04-19 | 1905-12-19 | George W Skinner Jr | Centrifugal pump. |
| US2331379A (en) * | 1940-05-17 | 1943-10-12 | Gen Motors Corp | Domestic appliance |
| US2341894A (en) * | 1941-01-09 | 1944-02-15 | Gen Electric | Washing machine |
-
1949
- 1949-05-03 US US91107A patent/US2619826A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US557300A (en) * | 1896-03-31 | Centrifugal pump | ||
| US807971A (en) * | 1905-04-19 | 1905-12-19 | George W Skinner Jr | Centrifugal pump. |
| US2331379A (en) * | 1940-05-17 | 1943-10-12 | Gen Motors Corp | Domestic appliance |
| US2341894A (en) * | 1941-01-09 | 1944-02-15 | Gen Electric | Washing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3071077A (en) * | 1958-11-25 | 1963-01-01 | Ingersoll Rand Co | Centrifugal pump |
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