IE69261B1

IE69261B1 - Demountable syphon for a WC cistern

Info

Publication number: IE69261B1
Application number: IE394591A
Authority: IE
Inventors: Michael Harry Hardy
Original assignee: Polypipe Plc
Priority date: 1990-11-27
Filing date: 1991-11-13
Publication date: 1996-08-21
Also published as: GB2250304A; EP0488543A1; GB2250304B; IE913945A1; PT99607A; GB9123650D0

Abstract

The invention relates to a two or three part syphon apparatus (1) for a cistern, there being releasable interconnection means (4) whereby parts are secured together, and slidable interconnection parts (10) whereby the parts are rigidly held together in a desired spatial relation at a lower part of the apparatus. The apparatus may be a two or three part apparatus.

Description

DEMOUNTABLE SYPHON FOR A WC CISTERN The invention relates io syphon apparatus.

Syphon apparatus is generally well-known, and usually comprises a bell chamber or the like connected with a U- or J-shaped «discharge part which is adapted to be secured to a cistern wall so that water flow can, after initiating by a diaphragm in the bell chamber, move by syphonic action to say a lavatory bowl for flushing same. Such apparatus sometimes need attention in the form of a provision of a replacement for the diaphragm. This has the disadvantage that the diaphragm is not readily accessible. Moreover, it is often necessary for a particular syphon system to be used in dstems of various designs, and this facility is not readily available with «stistmg systems.

It is accordingly an object of the invention to seek to mitigate these disadvantages.

According to the invention there is provided syphon apparatus for a cistern, comprising separate interconnectible syphon portions having different lengths, having interconnectible means which on mterconneoion are adapted to provide a syphon apparatus of variable dimensions, the interesmnectihle means comprising a slidable connection on each of two laterally displaced (in use) parts of the apparatus, the slidable connection comprising two opposed tongues on a leg and complementary grooves on a bell housing of the apparatus.

Using the invention it is possible to provide a syphon system, of changed length and/or one which can be mounted in cisterns of various shapes, that is cisterns which have various types of bases, for example, round, square, oval or parallelpiped. The invention further provides for a rigid connection between the parts without canting or skewing, at a lower part of the apparatus (in use).

The interconnectible means may include complementary means on, in use, respectively upwardly and downwardly facing legs or limbs of the portions.

. ‘This provides a relatively simple construction.

The complementary means may comprise a double start lock nut and thread arrangement. This provides a relatively readily raanipulable connection with can be operated in a cistern.

One or each tongue may have a tapered portion. This provides for ease of assembly and distssansction.

Each tongue may have means whereby to latch the bell housing in position. This construction seeks to provide against disengagement.

The means may comprise a notch at or adjacent the base of the tongue. This provides for ease of manufacture during say moulding.

Syphon apparatus embodying the invention is hereinafter described, by way of example, with reference to the accompanying drawings.

Figs. Ϊ to 3 show side elevadonal views (Fig. 2 being in longitudinal section) of various syphon apparatus assembled; Figs. 4 to 6 show views similar to Figs. 1 to 3, but with apparatus disassembled; Fig. 7 shows a part of a leg of syphon apparatus according to the invention, in elevation; and Fig. 8 shows a plan view of pan of a bell housing of syphon apparatus according to the invention.

Referring to the drawings, in which like parts are identified by like numerals,, there is shown syphon apparatus 1 for a cistern, comprising intexxwnecfcible syphon portions 2, 3 for assembly to provide a syphon apparatus 1 of variable disiensicn. Tbs apparatus 1 is in three pieces.

Thus the portion 2, which. is a downleg, can bs provided in a variety of lengths, say in eight different lengths as in the embodiments shows whereby the syphon apparatus 1 csn be ®e«xfcsd in a variety of lengths of cistern, and in a variety of base shape or dimensions of cisterns for example, round, square, oval or parallelepiped.

The particsia 2, 3 am secured together by iiiterocmectine means 4 such as a double start nut 5 and thread 6 arrangement on respective dowxs*axdXy and inwardly (in use) facing portions, with a seal weans such as an O~ring 7 incatpocafced therein.

Bib partim 3 is a u* tubs, a leg 3 cf which caaneete with a hell bousing 9 er s^aboa ϊ&3&~ The leg 8 msy be provided in & veriefy of lengths like the dowries 2,. fas example eight lengths so that the essparstus 1 can be . nwntsd in a variety of cisterns cf different siseTo assasfal© the ecparstss I the leg 8 is attached to the body 9 by associated not 5 and thread 6, and O-ring 7 and is than slid &mq to connect with the leg 2. Bae cdwtileg 2 nut 5 is then tightened up to provide an assembled apparatus. In ell the estodiasots, the cbanleg· 2 and bell tossing 9 are .also intenroonectifale by sliding infcerccwectible means 10.

In Figs- 1 to S, this ccuprises an upstanding spigot 11 co a bracket co the leg and a socket or through bore 12 in a bracket projecting froa the ball boosing 9. In use, the part 3 is offered up to and lowered towards the part 2 and, with the spigot 11 and socket 12 aligned, the spigot 11 enters the socket 12 in effect to tie the two parts 2, 3 together. The parts 2, 3 can be disconnected by lifting the part 3 of the part 2 when the nut 5 is unscrewed, so lifting the socket 12 clear of the spigot 11.

Referring now to Figs. 7 and 8, the upper part of the leg is not shswn, and is identical to the parts shewn in Figs. 1 to 6, as is the part 3 which is also not shewn and which rises frost the bell bousing 9 in the manner shown in Figs. 1-6.

In Figs. 7 and 8, there is shewn an enfcodimant in which the leg 2 and bell housing 9 are tied together by interconnecfcihle means 10 in the form exf a slidable connection ccnptisiiw two crossed tongues or wings 13 whirs are integral with and project from the external surface of the leg 2 on a chord thereof.

Each drogue or wing 13 projects outwardly frea the body 2, sod has an wees inclined at tapered part X4 leading to a part 15 which is substantially parallel to the loogitudinal am a£ the leg 2- Ooe tcogue or wing 13 has a latch meaas in the foe® o£ a notch or indent 15. ttsplesentary inter

Claims

1. Syphon apparatus for a cistern, comprising separate interconnectible syphon portions having different lengths, having interconnectible means which on interconnection are adapted to provide a syphon apparatus of variable dimensions, the interconnectible means comprising a slidable connection on each of two laterally displaced (in use) parts of the apparatus, the slidable connection comprising two opposed tongues on a leg and complementary grooves on a tell housing of the apparatus.

2. Syphon apparatus according to claim 1, the interconnectible means comprising complementary means on, in use, respectively upwardly and downwardly facing legs or limbs of the portions.

3. Syphon apparatus according to claim 2, the complementary means comprising a double start lock nut and thread arrangement.

4. Syphon apparatus according to any precadlng claim, one or each tongue having a tapered portion.

5. Syphon apparatus according to any preceding claim, one or each tongue having means whereby to latch the bell housing portion. ό.

6. Syphon apparatus according to claim 5, the means comprising a notch at or adjacent the base of one or each tongue.

7. Syphon apparatus for a cistern, substantially as hereinbefore described with reference to Figures 7 and 8 of the accompanying drawings.