Title:
Laundry machine having vertically reciprocable tub
United States Patent 2499025


Abstract:
The present invention relates to a laundry machine and more particularly to a novel household laundry machine having a vertically reciprocating spherical container or tub. An object of the invention is to provide a laundry machine having a novel tub or container which is adapted to be vertically...



Inventors:
Horvath, John F.
Application Number:
US66048346A
Publication Date:
02/28/1950
Filing Date:
04/08/1946
Assignee:
APPLIANCE CORP OF AMERICA
Primary Class:
Other Classes:
68/148, 68/156, 134/140, 312/306
International Classes:
D06F21/00
View Patent Images:
US Patent References:
2407660Washing machine1946-09-17
2396105Laundry machine1946-03-05
2335560Laundry apparatus1943-11-30
2303940Fluid treating apparatus1942-12-01
2265516Washing machine1941-12-09
2171449Apparatus for treating articles with fluid1939-08-29
2037568Washing machine1936-04-14
1713979Dry cleaning apparatus1929-05-21
1064135N/A1913-06-10
0073978N/A1868-02-04



Foreign References:
DE648293C1937-07-28
Description:

The present invention relates to a laundry machine and more particularly to a novel household laundry machine having a vertically reciprocating spherical container or tub.

An object of the invention is to provide a laundry machine having a novel tub or container which is adapted to be vertically reciprocated and which provides a novel fluid cleansing action.

The invention is particularly adapted for use with a laundry machine of the type disclosed in my co-pending application Serial No. 637,964, filed December 29, 1945, but may be used with laundry machines of other types and kinds.

Further objects will become readily apparent from the following detailed description taken in connection with the accompanying drawings illustrating preferred forms of the invention wherein: Figure 1 is a side view in section of a laundry machine embodying the invention, but disclosing only a part of the operating mechanism.

Figure 2 is a vertical sectional view taken on the line 2-2 of Fig. 1.

While the invention is susceptible of various modifications and alternative constructions, it is herein shown and will hereinafter be described in a preferred embodiment. It is not intended, however, that the invention is to be limited thereby to the specific construction disclosed. On the contrary, it is intended to cover all modifications and alternative constructions falling within the spirit and scope of the invention as defined in the appended claims.

In the drawings there is shown a casing 10 for a domestic laundry machine which is divided by partition II into an upper compartment 12 housing the container or tub 13 and a lower compartment 14 housing the operating mechanism.

The casing is mounted on a base 15 and in its upper central portion there is an opening adapted to be closed by a cover 16.

The tub 13 comprises a lower substantially hemispherical section 17 and an upper substantially hemispherical section 18. The two tub sections, 17 and 18, terminate in laterally extending flanges which are attached together by means of a clamping ring 19. The lower section is provided with a pair of inwardly extending ribs 20 and 21 each arranged in a substantially horizontal plane and concentric with the vertical axis of the container. As seen in Fig. 1 the ribs 20 and 21 are in vertically spaced apart horizontal planes. In the top of the container is a material loading and unloading opening 22 surrounded by an upturned lip 23 and adapted to be closed by a perforated door or cover 24 movably mounted in the interior of the tub. The perforated door is of the type shown and described in my above mentioned co-pending application. As seen in Fig. 1 of the present application each of ribs 20 and 21 are of hollow V-shaped cross section so that were a cone passed through the apex of the V of the respective ribs with the sides of the cone bisecting the angle within the V the apex of the cone would fall approximately at the center of the tub.

A flexible member or diaphragm 25 is arranged normally to fit against the inner surface of the lower tub section and snugly over the ribs 20 and 21. This diaphragm is preferably of rubber or other suitable material and its edge is secured between the flanges on the tub sections 17 and 18 and is clamped therebetween by the ring 19. The tub is mounted on the top of a shaft or stem 26 securely fastened to a flange 27 attached to the center of the lower tub section 17; the shaft 26 extends through a bearing 28 in a bracket 29 extending from and attached to the sides of the compartment 14. The lower end of the shaft 26 is connected with one end of a connecting link 30, the other end of which link is attached to the crank pin of a crank shaft 31 mounted in bearings 32 and 33 attached to the base of the compartment 14 and driven from a speed reducer 34 on a motor 35, also secured to the base of the compartment 14. The shaft 26 extends through an opening in the partition 1I, which opening is made leak-proof by means of a flexible seal or diaphragm 36 suitably secured to the partition II and the flange 27, the seal permitting vertical movement of the shaft.

Means are provided for supplying the container with cleaning and rinsing fluids and the lower part of the container with a pressure fluid. These means comprise an arcuate pipe 37 suitably secured to the upper part of the container and communicating therewith through a plurality of openings in the container. This pipe 37 is attached to another pipe 38, which leads to a flexible hose 39 and which is connected to a fluid supply pipe 40 which extends through the partition II and leads to a source of fluid supply. The pressure fluid supply means comprises a fitting 41 in the lower part of the container section 17 and communicating therewith underneath the diaphragm 25. This fitting is connected to a fluid supply means pipe 42 by means of a flexible hose 43.

The operation of the laundry machine for cleaning the clothes and extracting and rinsing the washing fluid therefrom is disclosed in my aforesaid copending application, Serial No. 637,964, and reference is made to it for a full disclosure of said operations. In that application, however, the tub is shown as being oscillatably I mounted on a driven shaft. In the present application, the shaft 26 is vertically reciprocable and it and the tub are moved up and down in the compartment 12. The ribs 20 and 21, each being in a plane substantially at right angles 1 to that of the movement of the tub, provide a violent agitation of the fluid and material in the tub, whereby they are thoroughly cleaned during the cleaning operation and the wash water is completely removed therefrom during the rins- 1 ing operation. Not only does the agitation of the tub give an excellent and different washing action from that shown in my co-pending application, but my invention herein disclosed eliminates the necessity for agitating ribs in the upper con- , tainer section 18.

The door or cover 24 is provided with a plurality of perforations, as shown in Fig. 1, for the escape of liquid from the interior of the tub to the upper compartment of the casing when the tub 2 is overflowed with rinse water through the pipe 38 during rinsing, and when the diaphragm 25 is forced upwardly by liquid under pressure introduced into the space between the diaphragm and the inner surface of the bottom of the tub.

This perforated door may be movably mounted with relation to the upper portion of the tub in any desired manner, as for example, by a pivot pin connecting one marginal portion of the door with the upper portion of the tub, as shown and described in my said co-pending application 637,964. Such pivot pin together with any suitable locking means on the opposite portion of the door, as also shown in my said application 637,964, will prevent the door from falling inwardly and at the same time permit movement of the door from open to closed position.

As is fully described in my said application referred to above, clothes, or other textiles being cleansed, will be inserted into the tub through the door opening in the top and wash water introduced into the tub through pipe 38 to the desired level. Any desired detergent will also be introduced into the tub at the same time.

The perforated door 24 will then be closed and locked and vertical reciprocation of the tub started through the medium of the operating mechanism in the lower compartment. When the washing operation has been continued for a sufficient length of time, liquid under pressure will be introduced through hose 43 and fitting 41 into the space between the flexible diaphragm 25 and the inside of the lower portion of the tub. This will cause the diaphragm to flex upwardly into substantial inverted position which will force the wash water out through the openings in the perforated door 24 and at the same time squeeze the greater portion of the remaining liquid in the clothes, or other textiles being cleansed, out therefrom and out through the perforations in the door. This squeeze water will then be released from the space between the diaphragm and the tub which will cause the diaphragm to resume its position shown in Fig. 1.

Rinse water will then be introduced through pipe 38 to the interior of the tub which can if desired be continued a short length of time to overflow from the tub through apertures in the door 24 to further carry out any suds and dirty water from the interior of the tub. The reciprocation of the tub will continue during, this time and when the rinsing has proceeded for a desired length of time liquid under pressure will again be introduced in the space between the diaphragm Sand the lower portion of the tub. This upward movement of the diaphragm will force the rinse liquid in the tub through the openings in the door 24 and then squeeze the clothes or textiles between the diaphragm and the upper portion 0 of the tub and the door 24, the liquid being squeezed out passing through the apertures in the door. The liquid under pressure is then released from behind the diaphragm and the diaphragm again returns to its position shown in Fig. 1. The motor 35 for vertically reciprocating the tub will then be stopped so that the cleansed and squeezed clothes can be removed from the tub and the tub prepared for another batch of clothes or textiles to be cleansed.

o I claim: 1. A washing and extracting laundry machine having in combination a casing provided with an upper tub compartment, a lower operatingmechanism compartment and a leakproof parti'5 tion therebetween having an opening therethrough, a hollow tub having upper and lower portions, said lower portion having a pair of vertically spaced ribs each extending horizontally around the interior thereof, the lower one of 3o said ribs extending upwardly and inwardly at a greater angle with relation to the horizontal than the upper rib and being located nearer the vertical axis of the tub than the upper one, a vertijal stem fixed at its upper end to the tub and pass,5 ing through the opening in the partition, and mechanism in the lower compartment for vertically reciprocating said stem and tub.

2. A laundry machine as claimed in claim 1, in which the lower portion of the tub is pro40 vided with a flexible diaphragm, and means for forcing the diaphragm upwardly to squeeze textiles between the diaphragm and the upper portion of the tub, the lower face of each of said ribs being inclined upwardly and inwardly to facili45 tate separation of the diaphragm from the ribs when the diaphragm is forced upwardly.

3. A laundry machine as claimed in claim 2, in which the upper portion of the tub is formed with an opening through which liquid in the 50 tub escapes during the squeezing operation, the upper face of the upper rib being in an approximately horizontal plane.

4. A laundry machine as claimed in claim 1, in which the opening in said partition is larger 55 than the cross section of the stem, and an inverted flexible sealing cup fixed at its upper end to the bottom portion of the tub and fixed at its bottom to said partition around said opening.

60 5. A washing and extracting laundry machine having in combination a casing provided with an upper tub compartment, a lower operatingmechanism compartment and a leakproof partition therebetween having an opening there65 through, a spherical tub having a lower hemispherical portion and an upper hemispherical portion, said lower tub portion having a pair of vertically spaced annular V-shaped ribs extending horizontally around the interior thereof, the 70 lower one of said ribs being formed so that the apex of a cone, the sides of which bisect the angle within the V, falls approximately at the center of the tub, and mechanism in the lower compartment for vertically reciprocating said tub. 75 6. A laundry machine as claimed in claim 5, .,499.ea5 having a flexible diaphragm normally following the inside contour of the lower tub portion and the exposed portions of the ribs, an opening in the upper tub portion for escape of liquid from the tub, and means for forcing said diaphragm upwardly to force liquid out of the tub and squeeze materials being washed between the diaphragm and upper tub portion, the lower rib extending upwardly and inwardly of the tub to facilitate separation of the diaphragm therefrom when To the diaphragm is forced upwardly, and to provide an efficient washing action when the tub is vertically reciprocated.

7. A laundry machine as claimed in claim 6, in which said reciprocating mechanism includes a vertical stem fixed to the spherical tub, and a flexible sealing cup positioned around said stem and fixed at its upper end to the bottom of the tub and fixed at its lower end to said partition.

8. In a laundry machine, a spherical tub formed of a lower approximately hemispherical hollow portion and an upper approximately hemispherical hollow portion, said lower tub portion having on its interior a pair of vertically spaced ribs extending horizontally therearound, means for vertically reciprocating said tub, the lower rib forming a greater angle with relation to the horizontal than the upper rib whereby to thoroughly agitate the materials being cleansed during the vertical reciprocation of the tub. 9. A laundry machine as claimed in claim 8, having a flexible diaphragm sealed between the meeting edges of the upper and lower tub portions, said upper tub portion having an opening for the escape of liquid and being free of interior ribs, said ribs being of V-shaped cross section to facilitate movement of the diaphragm upwardly away from the ribs.

10. A washing and extracting laundry machine having in combination a casing provided with an 411 upper tub compartment, a lower operatingmechanism compartment and a partition therebetween having an opening therethrough, a spherical tub formed of an upper approximately hemispherical portion and a lower approximately hemispherical portion, said lower tub portion having vertically spaced horizontally arranged ribs, the lower one of said ribs forming a greater angle with relation to the horizontal than the upper one, a flexible diaphragm in said tub normally contacting the lower tub portion and the side faces of its ribs, said upper tub portion having an opening for the escape of liquid from the tub, means for inverting the diaphragm under pressure to squeeze the materials being cleansed and force liquid from the tub, a stem fixed to the tub and extending downwardly through the opening in the partition, mechanism in the lower compartment connected to the stem for vertically reciprocating the stem and the tub, a flexible sealing cup fixed to the partition around its opening and also fixed to one of said reciprocating parts, and means for introducing wash and rinse liquid into the top portion of the tub, the angles of said ribs facilitating movement of the diaphragm upwardly away from the ribs.

JOHN F. HORVATH.

REFERENCES CITED The following references are of record in the file of this patent: UNITED STATES PATENTS Number 73,978 1,064,135 1,713,979 2,037,568 2,171,449 2,265,516 2,303,940 2,335,560 2,396,105 2,407,660 Name Date Jennings --------- Feb. 4, 1868 Drummond .-----. . June 10, 1913 Redmond ------- May 21, 1929 Emmerling et al. --.. Apr. 14, 1936 Kuhn ---------- Aug. 29, 1939 Chayie ----------- Dec. 9, 1941 Kuhn ...------.---. Dec. 1, 1942 Crane .----------- Nov. 30, 1943 Kirby ---------- Mar. 5, 1946 Graham -------- Sept. 17, 1946 FOREIGN PATENTS Number Country Date 48,293 Germany -------- July 28, 1937