Improvements relating to Pipe Joints.
Year: 1898

page_text: Date of Application, 16th Dec., 1898
Complete Specification Left, 15th Sept., 1899-Accepted, 21st Oct., 1899
PROVISIONAL SPECIFICATION.
Improvements relating to Pipe Joints.
I, EMMANUEL PUTZEYS, of 8, Avenue de la Renaissance, Brussels, in the King-
dom of Belgium, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to improvements in pipe joints and is suitable for large
water or other mains earthenware sewers and such like. Its purpose is to give
a perfectly hermetical joint and consists essentially of a packing of a fusible com-
position between the two extremities male and female of the pipes to be joined
and in which are embedded one or more electrical conducting bodies lying, when
the packing is in place, on contact points arranged on the outside of the packing
to which an electric current can be applied at the moment of establishing the
joint so that under the action of the current passing through the conducting
bodies embedded in the packing the latter can become fused and form when cool
a hermetical joint.
Between the ends, male and female of the pipes to be joined is placed a suitably
formed body or bodies of fusible composition made for instance of pulverized
terracotta, sulphur and tar. In this fusible mass which is by its nature itself
insulating a metal wire spiral is embedded the extremities of each of these
spirals come upon separate contacts easily accessible when the junction of the
pipes is operated; these contacts are of good conducting metal, non oxidating
and not protruding beyond the outside.
The laying of the pipes being finished in the ordinary manner by the simple
laying of the male end into the female end and this laying being made for such
length and number of pipes as may be convenient, it is sufficient the fusible
bodies being in place to pass an electric current of sufficient intensity through
the spiral to bring it to the corresponding point of fusion of the fusible body, this
operation being effected the latter will form when cool a hermetical joint.
It is evident that the packing body can be put in place in each pipe length
before its utilization, also it could be fused for making the joint by the placing
of a suitable conductor in the mass between the tubes at this moment only.
These packing bodies can be prepared ready for use in advance and can be
provided with a simple metal spiral, but according to circumstances this spiral
or conducting body could have any suitable form, notably in the case one should
need a conducting body of considerable surface, the spiral can be formed of a
band of woven wire or the like.

page_text: Improvements relating to ripe
I, EMMANUEL PUTZEYS, of 8, Avenue de la Renaissance, Brussels, in the King-
dom of Belgium, Engineer, 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 relates to improvements in pipe joints and is suitable for large
water or other mains earthenware sewers and such like. Its purpose is to give
a perfectly hermetical joint and it consists essentially of a packing of a fusible
composition between the two extremities male and female of the pipes to be
joined in which packing are embedded one or more electrical conductors lying,
when the packing is in place, on contact points arranged on the outside of the
packing, to which conductors an electric current can be applied at the moment
of establishing the joint or afterwards so that under the action of the currents
passing through the conductors embedded in the packing the latter can become
fused and form when cool a hermetical joint.
The accompanying drawings illustrate this invention Fig. 1 being a longi-
tudinal section of two pipes so joined.
Figs. 2 and 3 representing two packings ready for insertion to form the joints
aforesaid.
Between or within the spigot and socket ends A and B of the pipes to be joined
rs placed a suitably formed body or bodies of fusible composition C made for
In this fusible mass which is
instance of pulverized terracotta, sulphur and tar.
by its nature itself an insulating material a metal wire spiral or spirals D is or
are embedded, the extremities of each of these spirals come upon separate con-
tacts 1, 2, 3, 4 easily accessible when the fusing of the pipe junctions is to be
done; these contacts are of good conducting metal, non-oxidizing and not pro-
truding beyond the outside.
The laying of the pipes being finished in the ordinary manner by the simple
laying of the spigot into the socket and this laying being made for such length
and number of pipes as may be convenient, it is sufficient, the fusible bodies
being in place, to pass an electric current of sufficient intensity through the
spiral or spirals D to bring it or them to the temperature corresponding to the
point of fusion of the fusible body or bodies, this operation being effected the
latter will form when cool a hermetical joint.
It is evident that the packing material can be put in place in or about each pipe
length before its utilization for example as in Fig. 1 also it could be arranged
for making the joint by the placing of a suitable conductor in an annular mass
of such packing to be placed between the pipes at the time of laying the latter.
Fig. 2 shows one of these packings prepared ready for use in advance and pro-
vided with a simple metal spiral, but according to circumstances this spiral or
conducting body could have any suitable form. If there should be needed a con-
ducting body of considerable surface, the spiral can be formed of a band of woven
wire or the like as in Fig. 3.
Having now particularly described and ascertained the nature of this said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
1. A pipe joint for water or other mains earthenware sewers and such like
wherein there is placed between the spigot and socket pipe ends, a fusible pack-
ing in which is embedded an electric conductor, adapted on passage of a sufficient
electric current to fuse the packing sufficiently to form a tight joint.

page_text: 2. A pipe joint for water or other mains earthenware sewers and such like
wherein there is placed in the socket end of a pipe a layer of fusible material
and surrounding the spigot end of a pipe another layer of such material. Each
layer having embedded in it an electrical conductor ending in non-oxidisable
contacts in the pipe surface or in the surface of the fusible material so that by
passage of sufficient currents of electricity the two fusible layers may become
welded together to form a tight joint.
3. A joint for pipes consisting of an annular mass of fusible material in which
is embedded a spiral wire or electric conductive body for the purpose described.
Dated this 15th day of September 1899.
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, W.C.