Improvement in the Waste Pipes of Sinks, Closets and similar Domestic Appliances.
Year: 1899

page_text: Date of Application, 3rd Mar., 1899-Accepted, 29th Apr., 1899
COMPLETE SPECIFICATION.
Improvement in the Waste Pipes of Sinks, Closets and similar
Domestic Appliances.
1, EMIL HELM, of No. 28, Dragonerstrasse, Berlin, in the German Empire,
Jeweller, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:.
-
In the present system. of water supply considerable difficulty is experienced
in removing impurities from the waste pipes of sinks, closets etc., for whenever
these pipes happen to be stopped it becomes necessary, in order to lay them open
for inspection, to undo all the wood-work covering them; while in some cases the
pipe itself has to be cut open before the obstruction can be removed. It is clear,
that all this involves a great deal of trouble, waste of time and labour, and conse-
quent expense.
Now the subject of this invention is a special clearing or cleansing tube pro-
vided on each storey of any given building, where it joins the system of water-
pipes, so that through it the pipe to which it is attached may be cleaned out
without difficulty, or freed from any obstruction, by means of a suitable brush
fitted to a piece of wire or similar article serviceable as a handle.
One form in which the invention may be carried out is represented by way of
example in the accompanying drawings, in which Fig. 1 is a cross section of the
arrangement including the device which serves to close the lateral clearing
orifice; Fig. 2 is another cross section of the same, the closing device, however,
being supposed to have been removed and a brush inserted to clean or clear the
main pipe.
..
Whilst
To the main discharge or waste pipe a a lateral branch b is attached, in such a
manner, that its inner surface gradually unites with that of the said pipe a; be-
sides, the curve of the branch tube is such, that a brush fitted to a flexible shaft,
handle or the like may be conveniently passed through it and brought down for
cleaning purposes to a depth of several meters within the main pipe a.
the branch tube is not in use, its orifice is closed, say by means of a simple cap
or cover, either screw-threaded or smooth, a blind flange or any similar appliance.
The closing device shown in the drawing is perfectly tight and affords the
further advantage, that it may be readily fixed in position or removed as re-
quired. Upon the edge of the orifice 6 is placed a cap d comprising a washer f
and a metal plate g accommodating such washer, both of which parts f and g,
may be securely joined to the cap d by means of screws h. The metal plate is
provided with a tapped aperture, which enables the outer cap or cover k to be
secured thereto by means of a screw m. On the square head n forming an exten-
sion of the screw m there fits a key ; while the small cap s serves to close the
aperture i, whenever, after the waste pipe has been swept clean, the closing
arrangement is applied to the orifice and screw m is tightened with the key.
Owing to the provision of this side channel b laterally projecting through the

page_text: wall, any person may clear the waste pipe in the most simple and convenient
manner.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:
1. A water discharge or waste pipe having a lateral arm or branch b adapted
to facilitate the introduction of a brush for cleaning or clearing the pipe, sub-
stantially as described.
2. A water discharge or waste pipe a having a curved branch 6 provided with
a cap, cover and accessories, as described and shown by the drawings.
Dated thin O of Man 1900
FAIRFAX & WETTER,
Agents, 37 and 39, Essex Street, Strand, London.