Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Patent
1988-11-23
1990-08-14
Taylor, Dennis L.
Hydraulic and earth engineering
Drainage or irrigation
Porous or apertured pipe, flume, or tileway
405 43, 405 47, 405 36, 239542, 239568, 239566, 2395903, A01G 2506, E02B 1300
Patent
active
049482955
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a pipe for watering plants, particularly for watering the roots, comprising a feed pipe of substantially circular cross-section and incorporating orifices and on the outside surface of which, at least in the region of the orifices, there is at least one layer of fibrous material. The invention furthermore relates to a method of producing a pipe for the watering of plants.
When watering plant roots, it is important to dispence the water as satisfactorily as possible as it emerges from the pipes laid in the ground for watering purposes in order to prevent the soil becoming waterlogged. At the same time, it is important to prevent the roots growing into the watering pipe and the soil from damaging the pipe or clogging the orifices.
A watering pipe is already known (U.S. Pat. No. 3,302,408) wherein a synthetic plastics pipe provided with orifices is, for regulating the emergence of water, entirely enclosed in a layer of very fine glass fibres over which there is a synthetic plastics net, the entire pipe being wrapped in and held together by a spiral of wire. However, this known pipe has the disadvantage that the external network of synthetic plastics can easily be damaged by stones in the soil or by a working implement. Furthermore, cutting it to specific lengths is very complicated due to the wire which is necessarily wound around it. Also a sealing-tight connection of individual pipes, for example by fitting one into another, is possible only with difficulty.
In addition to this watering pipe of circular cross-section, there are a multiplicity of other watering pipes having complicated cross-section which likewise comprise porous or fibre-like coverings in order to regulate the emergence of water. This disadvantage of such pipes resides above all in the expense of manufacture and in the fact that a tight connection of pipes to one another or a sealing-tight connection to a storage tank, for example, can be very complicated.
Also known is a triple-shell watering pipe comprising an inner elastic and perforated feed pipe, a perforated outer pipe and, in between, a layer of fabric, the orifices in the inner feed pipe and the outer pipe being staggered. In the case of this known pipe, the in most cases easily dirtied water must flow in the direction of the fabric layer in order to pass from an inner bore to an offset outer bore. Thus there is the risk of the pipe becoming clogged with sludge. The known triple sheel pipe also has its disadvantages from the point of view of manufacture. In fact, making the outer orifices presents a difficulty since during the subsequent drilling of these orifices, it is quite likely that the fabric underneath will also be damaged. If the orifices are already drilled into the outer pipe previously, then there is the problem of pushing into the outer pipe the inner casing with its fabric covering.
Therefore, the object of the invention is to provide a rugged and competitively priced pipe of the type mentioned at the outset in which the risk of clogging or siltation is largely reduced and which is easily manufactured. Furthermore, it is intended to regulate the emergence of water which will be directed under control and also to prevent roots growing into the interior of the pipe.
According to the invention, this is achieved in that a water impervious casing pipe is provided which consists preferably of synthetic plastics material and which is provided with at least one longitudinal slit and which substantially entirely encloses the feed pipe and the layer(s) of fibrous material disposed thereon and in that the feed pipe has orifices only in the region of the longitudinal slit in the enclosing casing pipe.
Where the pipe according to the invention is concerned, the water flows through and at a right-angle to the surface of the layer(s) of fibrous material. Slight siltation to which the present pipe is already less susceptible than the pipe in the citation can if necessary be forced out by a brief surge of water (a short period of over-pressure) so that the pipe
REFERENCES:
patent: 2798768 (1957-07-01), Babin
patent: 3403519 (1968-10-01), Balko
patent: 3601320 (1971-08-01), DuPlessis
patent: 3698195 (1972-10-01), Chapin
patent: 3777987 (1973-12-01), Allport
patent: 3874598 (1975-04-01), Havens
patent: 3901448 (1975-08-01), Babin
patent: 3939875 (1976-02-01), Osborn et al.
patent: 4474330 (1984-10-01), Langa
McBee J. Russell
Taylor Dennis L.
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