Patent GB-916652-A (GB)
Title: The deodorising, cleaning, or disinfecting of toilet bowls
IPC: E03D9/03
Filed: 1960-09-08
Abstract: 916,652. Disinfecting deodorising or cleaning devices for toilet bowls. HICKS, G. F. Sept. 8, 1960 [Oct. 9, 1959], No. 30937/60. Class 81 (1). [Also in Group I] In a device 17 for introducing a deodorising, cleaning, disinfecting or the like agent into a cistern 10 which supplies flushing water to the bowl of a water closet or the like, there is provided a container 18, adapted to be immersed in the flushing water in the cistern; a compartment 19 formed within or in association with the container and which before use is charged with a quantity of agent 23 in a solid or pastelike form, the compartment being closed except for an opening at the top thereof, the opening communicating with the interior of the container whereby the flushing water has direct access through the container, to the upper surface of the agent only and apertures 21 formed in the container, the apertures being so disposed that (a) flushing water is normally admitted to the container so that an aqueous solution of the agent is formed in the container and in the top of the compartment, thereby covering the upper surface of the agent; and (b) a portion of the aqueous solution is discharged from the container into the flushing water when the latter is released from the cistern, the upper surface of the agent remaining covered by some of the aqueous solution. As shown in Figs. 1 and 3 the container 18 is frusto-conical while the compartment 19 is substantially cylindrical in shape, and is situated coaxially within the container 18 and sharing its base 22. The agent 23 is placed in the compartment 19 so that the upper surface of the agent 23 is the only surface exposed to the water within the cistern 10. As shown in Fig. 4 the container 24 is supported by the central coaxial tubular portion 25 and by the webs 26, the top of the tubular portion 25, the base 27 of the container 24 and the sides of the container 24 defining the annular compartment for the agent 28. In this case the discharge apertures are in the form of castellations 29 in the bottom edge of the tubular portion 25. In a modification (Fig. 5, not shown) the container is simply a tube which stands on its own lower edge, the compartment for the agent being formed by the annular member and the interior of the container wall. The discharge apertures are formed by castellations formed in the lower edge of the container. As shown in Fig. 6, the container is merely a tube 34 standing on its lower edge which has the castellations 35 formed therein and the compartment is an open-topped cylindrical vessel 36 holding the agent 37 which is fixed to the walls of the container 34 by means of the webs 38. In a modification (Fig. 7, not shown) the container is tubular and is supported off the bottom of a cistern by the compartment and webs. The annular space between the lower edge of the container and the compartment forms the discharge orifice for the solution of the agent formed in the container. In a modification (Fig. 8, not shown) a container is supported by an open-topped compartment and the container is provided with a base by which it is secured to the compartment at or near its top. The aqueous solution of the agent formed within the container may be discharged therefrom through apertures. In a modification shown in Fig. 10 showing a cistern 51 containing water 52 connected with a plurality of water closet bowls by the down pipe 53 and in which the water level seldom falls to the bottom of the cistern 51 (since the volume of water is large enough to flush, say, at least two of the bowls simultaneously) and will therefore not expel the concentrated solution from a device resting on the bottom of the cistern 51, the device 55 is suspended from the ball arm 56 associated with the ball 57 or a device 54 is suspended from the top of the wall of the cistern 51. In both cases, the devices 54 and 55 are suspended at such a level within the cistern 51 so that, when the water 52 is at its normal or full level, the compartment of each device is fully immersed in the water. Preferably the normal water level is such that it also covers the container. During each flushing action the lowering of the water level will cause a small amount of the concentration solution to flow from the container of each device 54 and 55. An agent for use in the device comprises sodium neutralized alkyl aryl sulphonite paste, lauric diethanolamide, sodium sulphate and orange blossom perfume.