GB2120296A - Trapped gully with rodding access - Google Patents

Abstract

A combined multi-entry single outlet trapped gully for use in connection with waste and/or rain water drainage in buildings comprises two interlocking parts only, i.e. a rigid gully body 46 incorporating inflow W1, W2 and outflow facilities 3 and access for rodding and a flexible gully grating 15. The gully body has provision 47 for inlet pipes at different levels and is so configured as to provide a mechanical water seal and release interlock of gully grating with gully body under manual pressure and hand leverage means respectively. <IMAGE>

Description

SPECIFICATION Waste water and/or rainwater disposal trapped rodding access drainage gully This invention relates to methods and means of control of the gravitational discharge of waste water and/or rainwater from buildings via a novel trapped rodding access gully featuring multiinflow single outflow pipe connector means, and which incorporates ground level visual, manual and rodding access facilities for inspection and/or cleaning purposes after, in or similar to the manner specified, illustrated and claimed in Patent Application No. 8201588 dated 20.1.1982.

The purpose of the present invention is as described in the foregoing paragraph and patent application No. 8201588, but comprises alternative means and methods of achieving the same or similar objectives by virtue of rearrangement of certain or all the features of the separate components comprising the said prior application in that the said separate components consist in trapped rodding access drainage gullies Type "A" a bottle gully, and Type "B" a limpet gully; whereas, the present invention consists in, in effect, a hybridisation forming a limpet bottle gully which may be placed in its position of use by attachment to the exterior wall of a building in such fashion as to require no other means of support.

Thus an object of the present invention is to provide a multi-inlet single outlet trapped rodding access drainage gully of generatised "bottle" configuration but possessing the alternative attachment features of a "limpet" gully, and consisting in a component comprised of two separate parts only, all the unique features of which are contained in patent application No.

8201588.

A further object of the present invention is to lay emphasis upon that unique feature of the limpet gully as illustrated in Figs. 8, 11 8 17, item 25, of the said prior application, which consists in a back entry pipe connector means located at the base of the gully body such that effluent is discharged into the gully at a level below that of the trapped reservoir. Such a feature is not permitted under current regulations governing sanitary installations because connections of two trapping mechanisms in series on one pipe line would provide no escape for the air held capture between two such traps, the result being that during use the upper trap in such an installation would drag rendering a water seal within the trap of the discharging sanitary appliance impossible.

It is a proposal of this object that all sanitary appliances discharging of a building via the said gully component should of themselves be untrapped. The logic of this proposition becomes ciear when the consequences of the current practice of individually trapping every sanitary appliance at its immediate waste outfall is explained: The vast majority of buildings to-day are to some degree heated in order to maintain comfortable living and working conditions throughout the year. It is paradoxical that modern heating and modern sanitary appliances should combine to provide the very habitat and conditions conducive to the breeding of phenominally large colonies of bacteria within our homes and places of work.Our baths, hand basins, sinks, showers, washing and washing-up machines are all mandatorily equipped with trapped wastes with the object of establishing a sanitary barrier between ourselves and the nastiness that lurks in sewers. The original function of such traps was to prevent the incursion of vermin and sewer gases into our living space and in this limited capacity they function with commendable efficiency, but there is a most unwelcome spin-off. Such waste traps contain by definition of self replenishing water seal, and the water forming that seal is invariable both warm and dirty in that it is the retained part of a much larger volume that has been used in some cleansing operation or other; and, as such, contains either in solution or suspension a high percentage of bacteria supportive organic matter.

Thus in numerous places throughout our homes and places of work we deliberately provide the very conditions our modern sanitary practices are designed to obviate, and each and every one of them open to the indoor air we breathe and the everyday things we use.

We are unquestionably a healthier and longer lived species now than at any time in our long history, but that is only because the "headline" killer diseases have been eradicated or contained.

But what about the others? That vast retinue of "minor" ailments that unaccountably beset modern man and lose more working hours to commerce and industry than all other factors combined: The unexplained head and ear aches; the inflamed and running eyes; the debilitating respiratory afflictions with their anti-social sneezes, snuffles and wheezes; the muscular pains attributable to no organic or accident cause; the tummy upsets and other alimentary "it must be something I ate" disorders that come and go as if by magic; the eruptions and rashes and itches that invade and disfigure our skins; and, our periodic lethargic, under-the-weather, rundown, one-degree-underness that snaps both will and intention.What about all those unexplained, nonattributable, undiagnosable, incurable, "I'll be alright in a few days" ailments to which we are prone? This cataiogue of bacterially rooted sicknesses exist for the most part because we enforce the establishment of germ breeding areas in every house, school, factory, office, shop and other public place in the country and thereby infect and reinfect ourselves with the abandon of lemmings.Sanitary traps? Death traps, more likely ! A still further object of the present invention is to provide a multi-entry single outlet rodding access trapped limpet/bottle gully for drainage purposes which falls within the widely known area of use of drainage components from the point of view of compatibility with standard materials, codes of practice and methods of installation and use without further adaption or educational instruction.

The component means by which the present invention may be put into effect consist in a bottle/limpet trapped rodding access drainage gully comprised of two parts only: (1) An (preferably) injection moulded unplasticised polyvinylchloride gully body which consists in a vertically disposed suitably inlet bossed and outlet apertures tubular part of preferably "D" shaped cross section closed off as to its base such that a well or sump is formed and with a suitably flanged collar integrally moulded on its upper periphery to receive a cover or grating. The said tubular body is further equipped as to its interior with an integrally formed vertically disposed pipe means connecting the sump to the outlet aperture and which in use forms part of the means of establishing a water seal.The said vertically disposed pipe means is further upwardly extended such that it projects into that area occupied by the said cover or grating and is so configured as to form an internal rodding eye giving access to the said outlet aperture and its following drain.

(2) An interlocking gully grating which consists in an (preferably injection moulded polypropylene slotted and/or apertured flexible "D" or horseshoe shaped plate which in situ lies within the compass of the said body flanged collar and which is adapted to receive inflowing drain and/or waste pipes in the vertical plane and/or surface water draining from the surrounding area. The said flexible grating is further configured as to its underside that when pressed into place within the said body flanged collar it automatically closes off the said upwardly projecting rodding eye and completes the water seal, all in the manner described in my prior application No. 8201588.

In the accompanying drawings: Fig. is a vertical section through a typical limpet/bottle gully body according to one mode by way of example of the present invention placed in situ against a vertical section through a standard cavity walled building the essential features of which are lettered in accordance with the schedule contained in the prior application No. 8201588 except "L" which refers to the traditional sand and cement ground floor screed.

Fig. 21 is a longitudinal section through an example of a flexible interlocking gully grating shown in offset relationship to its location in situ.

Fig. 22 is a view in plan of Fig. 20 and its associated masonry. The right hand side of the gully body is illustrated cut-away to show detail of an example of a side inlet bossing arrangement.

Fig. 23 is a rear elevation of Figs. 20 s 22 shown in in situ relationship to finished exterior ground level with its internal arrangement x-ray detailed in broken outline on the right hand side only.

Fig. 24 is a cross section "A-A" through Fig.

25.

Fig. 25 is a view in plan of an example of a flexible interlocking gully grating according to one mode by way of example of the present invention.

Fig. 26 is a view of the underside of Fig. 25.

In carrying the present invention into effect procedures in accordance with known practice for the installation of plastic bottle gullies are employed, or as described in the prior application No. 8201599. Thus a trapped rodding access drainage limpet/bottle gully body 46 (see Figs.

20, 22 8 23) is connected via one or more of its back entry inlet bosses 47 (see Figs. 20 8 23) to standard waste pipes and pipe bends in or after the manner of W1 and/or W2 (see Fig. 20) and built into the footings of a building in known manner, the stability of the assemblage being supplemented by the simultaneous incorporation of the wall ties 26 (see Figs. 20, 22 s 23) within the masonry. The subsequent connection of inflowing and/or outflowing underground drain pipes to their respective bosses and spigot 2 and 3 (see Figs. 20, 22, 23) is accomplished by known methods.The flexible interlocking gully grating is pressed into the compensatingly configured gully body flanged collar 48 (see Figs. 20 8 22) with the results outlined in my prior application No.

8201 588. Any vertically disposed exterior rainwater or waste pipe discharging into the said gully may be accommodated by cutting through the appropriately sized part webbed horseshoe slot 49 (see Figs. 21, 24,25 s 26).

In use the limpet/bottle gully according to the present invention has the same or similar behavioural characteristics to all or many of the features perculiar to those gullies described illustrated and claimed in my prior application No.

8201 588 but emphasis must be laid on that unique feature which permits of effluents generated within a building discharging into gully type "B" of my prior application No. 8201588 or into that of the present invention at a point below the level of the reservoir trapped within the body of the component. Thus untrapped sanitary appliances located within a building may be discharged directly into an exterior trapping mechanism therbey eliminating a highly probable source of infection from the interior of our buildings.

Note The Abstract of the Invention forming part of my prior application No. 8201588 applies equally to the present application.

Claims (1)

1. Claims

   11. A two-piece multi-inlet single outlet trapped rodding access drainage gully as claimed in 1 to 10 of my prior application No.8201588 inclusive but which, as a component of a drainage system, permits of the optional inflow of affluent at either above, and/or below trapped water level.

   12. A drainage gully as claimed in 11 but which is a hybridised form of claims 1 to 10 being in effect a limpetibottle gully component.

   13. A limpet/bottle gully as claimed in 1 to 12 inclusive but which obviates the necessity for the individual localised trapping of sanitary appliances within a building.

   14. Trapped access gullies for a waste disposal drainage system which elminate the need for maintaining trapped reservoirs of bacteria breeding effluents within buildings.

   Note The sanitary appliances referred to throughout this application expressly exlude W.C.

   Pans which are never discharged of a building via a trapped gully.