GB1598991A

GB1598991A - Toilet

Info

Publication number: GB1598991A
Application number: GB323478A
Authority: GB
Original assignee: Lemmon N R
Current assignee: Lemmon N R
Priority date: 1977-01-26
Filing date: 1978-01-26
Publication date: 1981-09-30
Also published as: AR218654A1; ATA66478A; BR7800448A; JPS53146453A; ES466480A1; AU3275678A; MX145452A; AT364926B; AU513091B2; PH16797A

Description

(54) IMPROVED TOILET (71) I, NEWTON RUSSELL LEMMON,a citizen of the United States of America, of 3030 Fairview Road, Hollister, California 95023, United States of America, do hereby declare the invention for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to flushable water closets which economise in the use of flushing water. It also relates to a cistern for such a water closet.

Conventional tank-type and valve-type water closets expend five to eight gallons of flush water at each use in order to ensure that the toilet bowl is thoroughly evacuated of waste materials, both solid and liquid. Liquid wastes require substantially less flush water than do solid wastes. Because of scarcity of resources, including water, and because of the necessity to maintain a high level of cleanliness in sanitary facilities, a need exists for an improved water closet capable of conserving water while assuring sanitary disposal of human wastes.

According to the present invention, there is provided a water closet comprising a lavatory bowl in which first and second chambers are defined for receiving liquid and solid wastes respectively, each chamber communicating with a trap at its lower end for linking the chamber to a sewer line, first and second flushing conduits for delivering flushing water independently to the first and second chambers respectively and a cistern including an elongated hollow member disposed vertically within the cistern and extending upwardly from the base of the cistern and coupled to the first conduit, the cistern itself being coupled to the second conduit.

Preferably the cistern for the water closet comprises a water supply tank, a valve for each flushing conduit provided in the base of the supply tank, an elongated hollow member extending vertically in the supply tank for receiving and storing a column of flush water to be dispensed through one of the conduits, the elongated hollow member extending upwardly from the bottom of the supply tank, its free end being arranged to be above the ambient water level of the storage tank, its lower end surrounding one of the valves, the elongated hollow member having at least one inlet arranged to be below the ambient water level for filling the elongated hollow member with water; and means coupled with each valve for opening each valve independently.The first chamber of the lavatory bowl is normally smaller than the second and the flushing system for the first chamber is preferably a vertical elongate hollow member in the cistern which is filled through holes in the member with water from the remainder of the cistern. The amount of flushing water for the first chamber can be determined by the height and size of the container, if open, or by the level of inlet openings in the wall thereof.

The invention will now be described by way of example and with reference to the accompanying drawings wherein: Figure 1 is a sectional elevation taken on the centre-line of a lavatory bowl according to the invention; Figure 2 is an isometric view showing the lavatory bowl of Figure 1 in combination with a cistern; and Figure 3 is a top plan view of the lavatory bowl of Figure 1.

As shown in the drawings, a lavatory bowl 10 has a forward chamber 12 for receiving liquids, such as urine, and a larger, rearward chamber 13 for receiving solids with or without liquid. The two chambers 12 and 13 comprise the flushable portion of a toilet bowl 14. The forward chamber 12 and the rear chamber 13 are separated by a flushing rim 16 transverse of the toilet bowl 14. Chambers 12 and 13 are provided with respective siphoning throats 18 and 20. The ambient water level is established in the forward chamber 12 by a first trap 22, and in the rearward chamber by a second trap 24.

Throats 18 and 20 merge at the base of the water closet 10 where waste is discharged through an outlet 44 into a sewer system.

Flushing water is supplied to the forward chamber 12 by first flushing rim 26 around part of the forward chamber 12 which, together with flushing rim 16, provides a combined flushing rim circumscribing forward chamber 12. Orifices 28 direct flushing water into the forward chamber 12 from a conduit 30 leading from a flushing water supply (not shown in Figure 1). Similarly, a water conduit 32 serves to supply rim flushing through orifices 34 of a second flushing rim 36 around part of the rearward chamber 13 and which, together with flushing rim 16, provides a combined flushing rim circumscribing rearward chamber 13. A conduit 38 which shares a common supply 40 with conduit 32 provides flush water at the normally submersed level of the rearward chamber 13.A nozzle 42 at the end of conduit 38 is for directing a burst of flushing water through the trap 24, which leads to the second siphoning throat 20.

In Figure 2, a cistern is illustrated in conjunction with the bowl 14. A tank 46 is provided in which is established a specific water level by a float valve 47. A first drain valve plug 48 controls water passage through supply inlet 40 to the rearward chamber 13. Plug 48 is controlled by a first lever and handle 50 in a conventional manner.

A second drain valve plug 52 is controlled by a second handle and lever 54 in a conventional manner for providing flush water from a reservoir 56 through a second supply inlet 53 to conduit 30 leading to the forward chamber 12.

The secondary reservoir 56 is a hollow tube which is sealed to the base of the tank 46 about the valve plug 52 to form a water column directly over the valve plug 52. Near the top of the secondary reservoir 56 is at least one opening 58 to permit overflow from the ambient level of water in tank 46 to fill the secondary reservoir 56. Since the normal water level is above the openings 58, no separate filling system is required for the secondary reservoir 56.

The level of the opening 58 below the normal level of supply water in tank 46 controls the amount of flush water used in the forward chamber flushing operation, since the supply water in tank 46 drains to the level of the openings 58 upon opening of valve plug 52.

The partition or recessed rim 16, which is transverse of the toilet bowl 14, may be located either forwardly or rearwardly. A rim flush may also be provided along the outer rim of the toilet bowl 14 above the rim 16 to assure that the top of the partition is adequately cleansed.

The volume of standing water in the forward chamber 12 may be considerably less than in the rear chamber 13. The overall size of the combined bowl and cistern can be smaller than that of a conventional arrangement, which should also reduce the demands for expulsion of flushing water.

WHAT WE CLAIM IS: 1. A water closet comprising a lavatory bowl in which first and second chambers are defined for receiving liquid and solid wastes respectively, each chamber communicating with a trap at its lower end for linking the chamber to a sewer line, first and second flushing conduits for delivering flushing water independently to the first and second chambers respectively and a cistern including an elongated hollow member disposed vertically within the cistern and extending upwardly from the base of the cistern and coupled to the first conduit, the cistern itself being coupled to the second conduit.

2. A water closed as claimed in Claim 1, wherein the first and second chambers are provided with first and second flushing rims which circumscribe the first and second chambers respectively.

3. A water closet as claimed in claim 1 or 2, wherein the elongated hollow member has at least one opening in its walls arranged to be a preselected distance below the ambient level of water in the cistern for refilling the elongated hollow member with water from the cistern after flush water previously contained in the elongated hollow member has been supplied to the first chamber.

4. A water closet as claimed in any one of Claims 1 to 3, wherein the cistern and the vertically disposed elongated hollow member therein are each provided with an outlet valve.

5. A water closet as claimed in Claim 4, wherein the cistern comprises a water supply tank, a said valve for each flushing conduit provided in the base of the supply tank, the elongated hollow member extending vertically in the supply tank for receiving and storing a column of flush water to be dispensed through one of the conduits, the elongated hollow member extending upwardly from the bottom of the supply tank, its free end being arranged to be above the ambient water level of the storage tank, its lower end surrounding one of the valves, the elongated hollow member having at least one inlet arranged to be below the ambient water level for filling the elongated hollow member with water; and means coupled with each valve for opening each valve independently.

6. A water closet substantially as described herein and as illustrated by the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. from a flushing water supply (not shown in Figure 1). Similarly, a water conduit 32 serves to supply rim flushing through orifices 34 of a second flushing rim 36 around part of the rearward chamber 13 and which, together with flushing rim 16, provides a combined flushing rim circumscribing rearward chamber 13. A conduit 38 which shares a common supply 40 with conduit 32 provides flush water at the normally submersed level of the rearward chamber 13. A nozzle 42 at the end of conduit 38 is for directing a burst of flushing water through the trap 24, which leads to the second siphoning throat 20. In Figure 2, a cistern is illustrated in conjunction with the bowl 14. A tank 46 is provided in which is established a specific water level by a float valve 47. A first drain valve plug 48 controls water passage through supply inlet 40 to the rearward chamber 13. Plug 48 is controlled by a first lever and handle 50 in a conventional manner. A second drain valve plug 52 is controlled by a second handle and lever 54 in a conventional manner for providing flush water from a reservoir 56 through a second supply inlet 53 to conduit 30 leading to the forward chamber 12. The secondary reservoir 56 is a hollow tube which is sealed to the base of the tank 46 about the valve plug 52 to form a water column directly over the valve plug 52. Near the top of the secondary reservoir 56 is at least one opening 58 to permit overflow from the ambient level of water in tank 46 to fill the secondary reservoir 56. Since the normal water level is above the openings 58, no separate filling system is required for the secondary reservoir 56. The level of the opening 58 below the normal level of supply water in tank 46 controls the amount of flush water used in the forward chamber flushing operation, since the supply water in tank 46 drains to the level of the openings 58 upon opening of valve plug 52. The partition or recessed rim 16, which is transverse of the toilet bowl 14, may be located either forwardly or rearwardly. A rim flush may also be provided along the outer rim of the toilet bowl 14 above the rim 16 to assure that the top of the partition is adequately cleansed. The volume of standing water in the forward chamber 12 may be considerably less than in the rear chamber 13. The overall size of the combined bowl and cistern can be smaller than that of a conventional arrangement, which should also reduce the demands for expulsion of flushing water. WHAT WE CLAIM IS:

1. A water closet comprising a lavatory bowl in which first and second chambers are defined for receiving liquid and solid wastes respectively, each chamber communicating with a trap at its lower end for linking the chamber to a sewer line, first and second flushing conduits for delivering flushing water independently to the first and second chambers respectively and a cistern including an elongated hollow member disposed vertically within the cistern and extending upwardly from the base of the cistern and coupled to the first conduit, the cistern itself being coupled to the second conduit.