Year: 1888

page_text: Date of Application, 1st Mar., 1888
Complete Specification Left, 30th Nov., 1888
Complete Specification Accepted, 15th Jan., 1889
1, JOHN JOSEPH LEWEN, of 13 Beaumont Road, West Kensington in the County of
Middlesex Builder and Decorator do hereby declare the nature of this invention to be
as follows:-
This invention comprises certain improvements in rain water, drain, soil, and similar
pipes, whereby a more perfect jointing of the pipes will be effected with less expen-
diture of time and money than hitherto.
The improved pipes are constructed as follows:-
One end of the pipe is provided with a packing of india rubber, or similar elastic
material and with a shoulder or collar, which is either rigidly attached to the said pipe
or slides loose thereon. The other end of the pipe is provided with a shoulder or
collar of larger diameter. When jointed the two ends of the pipes are kept tight by
the elastic packing, the shoulder or collar of the one being within the larger shoulder
or collar of the other, and the annular chamber between the two shoulders is filled
with a watertight composition which is put in hot, and which can be remelted and used
again if requisite.
CASTLE SMITH,
Invention " Office,
54, Fleet Street, London, E.C.,
Agent for the Applicant.

page_text: 1 JOHN JOSEPH LEWEN of 13 Beaumont Road, West Kensington in the County of
Middlesex, Builder and Decorator, 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 :-
This invention comprises certain improvements in rain water, drain, soil and similar
pipes whereby a more perfect jointing of the pipes will be effected with less expen-
diture of time, and money than hitherto.
The improved pipes are constructed as follows:-One end of the pipe is provided
with a packing of india-rubber or similar elastic material and with a shoulder or collar
which is either rigidly attached to the said pipe or slides loose thereon. The other end
of the pipe is provided with a shoulder or collar of larger diameter.
When jointed, the two ends of the pipes are kept tight by the elastic packing, the
shoulder or collar of the one being within the larger shoulder or collar of the other;
and the annular chamber between the two shoulders is filled with a watertight
composition which is put in hot and which can be remelted and used again if
required.
And in order that my invention may be more fully understood and carried into
practice, I will now proceed to describe the same with reference to the accompanying
drawings in which similar letters indicate corresponding parts.
Figure 1 is a vertical section of the ends of two pipes constructed according to
my invention, and Figure 2 shews the same when jointed together.
The lower end of each pipe is constructed with a shoulder or collar A extending all
round the circumference of the pipe. Within this collar I place a ring or a packing
of india-rubber, gutta-percha, or similar elastic material B of a suitable size to fit
closely within the said collar and to rest against the inner abutment, the underpart of
the said ring or packing B being made cone-shaped so as to act as a guide for the
lower pipe when making a joint. This ring or packing B I affix by plastic composition
or by beating it sufficiently or otherwise make it adhere to the said abutment C, as
found convenient. In this abutment C, I form a bevelled groove D of such a size as
will just take the upper end E of any other pipe, which said upper end E is bevelled
to correspond with the bevelled groove D. In addition to the bevel E hereinbefore
described, the upper end of each pipe is constructed with a cup or socket F of
slightly larger diameter than the shoulder or collar A which said cup or socket F
forms a receptacle for the plastic composition G used when forming the joint.
The operation of making a joint is as follows:-The cup or socket F is thoroughly
cleansed of dirt, dust etc., and a small quantity of methylated spirit or other inflam-
mable liquid is run in and set alight, or other convenient means are adopted, so as to
warm the socket F and also the lower end of the upper pipe to be fixed, the two pipes
being placed close together somewhat in the position shewn in Figure 1. The rubber
ring or other packing B is then fixed in position as before described, and the fixing

page_text: composition G, in a hot state run into the socket F so as to fill up about three parts of
the same. The bevelled end E of the lower pipe is then tightly pressed against the
under side of the rubber ring or other packing B, and is guided by the cone shaped
under surface thereof until the bevel D is immediately beneath the groove E pressing
the said rubber ring or other packing B into the bevelled groove D and thus forming
a perfectly water tight seal or joint.
The plastic composition G being susceptible to sensible differences of temperature
will allow for the expansion and contraction of the pipes, and will thus prevent the
breaking of the joint or any water or other contents from settling therein.
To disconnect the pipes at any time it is only necessary to heat the cup or socket F
so as to liquefy the composition G, and this can be conveniently effected by means of
an ordinary painter's blow lamp. In the case of a pipe being broken, a double collar
sliding loosely over a plain pipe takes the place of the collar A fixed on the bottom of
the pipe as shewn in the drawings.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. The construction and use of rain water, drain, and similar pipes with collar A,
bevelled groove D, bevel E and socket F substantially as, and for the purpose herein-
before set forth and lustrated in the accompanying drawings.
2. Pipes constructed as described in the preceeding claim, jointed together by
means of an india-rubber or other elastic ring or packing B, and by plastic com-
position G substantially as and for the purpose herein before set forth and illustrated
in the accompanying drawings.
2011 1 of November 1888