Improvements in Joints for Electricity Conductors.
Year: 1897

page_text: Date of Application, 28th Dec., 1897
Complete Specification Left, 27th Oct., 1898-Accepted, 10th Dec.,
1898
PROVISIONAL SPECIFICATION.
Improvements in Joints for Electricity Conductors.
We, CECIL CHARLES FOWLER, 16, Clifton Place, Brighton, Sussex, Electrical
Engineer, and THE MUTUAL ELECTRIC TRUST. LIMITED, 111, Gloucester Road,
Brighton, Sussex, do hereby declare the nature of this invention to be as follows:
Our invention relates to an improved method of reinstating the lead or metallic
casing of electricity conductors where said lead or metallic casing will have been
necessarily removed to permit of the junction of two or more conductors and
has for its object the hermetically enclosing such joint as well as ensuring the
metallic continuity of the lead or metallic casing throughout the total length
of the conductors. We effect this purpose by providing a metallic covering of
suitable shape so as to enclose the bared joint and overlap the lead casing of
the joined conductors, which said lead casing will have been necessarily removed
to permit the making of the joint. This metallic covering is constructed in two
or more parts which parts when placed over the joint form a complete box
around the joint and which in practice are intended to be joined together by
means of burning soldering or any of the customary processes for joining
metallic substances. We preferably make our coverings of lead with or without
alloys in order that when held in position around a joint the process of uniting
the parts known as plumbers jointing may easily be applied both to the
edges of the different parts of the covering itself and also to the parts where
the covering overlaps the lead or other metallic casing of the cables.
We preferably shape the parts of our covering with flanges or other suitable
projections where the parts are intended to join one another, this serves the
double purpose of serving to keep the parts in place while they are being joined
together and also provides more metal at the edges where the seams will be
made and where consequently more metal will be required, furthermore this pro-
vision of metal flanges assists the making of good metallic joints where it is
necessary to carry out the work in difficult positions such as for instance in the
trenches dug in a roadway. When the parts of the covering have been placed
in position over the junction of the cables and have been joined together and
also joined to the lead casings of the cables as hereinbefore described the space
between the insulation of the conductor joint and the metallic covering can
be filled in with any suitable insulating compound or oil which may be poured
through a hole in the covering left for the purpose and which hole
subsequently covered up and hermetically sealed.
Dated this 24th day of December 1897.
may
be
CECIL CHARLES FOWLER.
For THE MUTUAL ELECTRIC TRUST LTD.,
HENRY REASON.

page_text: Improvements in Joints for Electricity Conductors.
We, CECIL CHARLES FOWLER, 16, Clifton Place, Brighton, Sussex, Electrical
Engineer, and THE MUTUAL ELECTRIC TRUST LIMITED, 111, Gloucester Road,
Brighton, Sussex, 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;-
Our invention has for its object the prevention of electrical leakages and
mechanical troubles arising from defective joints in lead covered electric con-
ductors or cables.
Hitherto it has been customary in some cases to cover over such joints with
iron boxes or covers which have sometimes been provided with lead or soft metal
glands where the cables enter, which lead glands are burned or fused to the lead
covering of the cables, but the use of such boxes necessitates cutting the cable
in order that the ends may be brought in to the box. Iron boxes for this pur-
pose have also been used, divided laterally into two halves, in which case it is
very difficult to join the two halves of the box together with an absolutely
watertight joint, otherwise than by the use of our invention herein described.
Another customary method of protecting the joints of lead covered electric
conductors is to wrap sheet lead around the joint and to effect complete fusion
between the lead cable coverings and the joint covering by burning or "wiping,"
and this process when skilfully performed, may be made perfectly water-tight
but possesses the objection that it is almost impossible to know if the operator
has burned the lead unduly away so that in places it may be very thin, without
such weak places being detected, in addition to which it is somewhat difficult
to make such a joint any in any case occupies a considerable amount of time.
Our invention relates to an improved method of reinstating the lead or metallic
casing of electricity conductors where said lead or metallic casing will have been
necessarily removed to permit of the junction of two or more conductors and
has for its object the hermetically enclosing such joint as well as ensuring the
metallic continuity of the lead or metallic caring throughout the total length
of the conductors. We effect this purpose by providing a metallic covering of
suitable shape so as to enclose the bared joint and overlap the lead casing of
the joined conductors, which said lead casing will have been necessarily removed
to permit the making of the joint. This metallic covering is constructed in two
or more parts which parts, when placed over the joint form a complete box
around the joint and which in practice are intended to be joined together by
means of burning, soldering, or any of the customary processes for joining
metallic substances. We preferably make our coverings of lead with or without
alloys in order that when held in position around a joint the process of uniting
the parts known as plumbers jointing may casily be applied both to the
edges of the different parts of the covering itself and also to the parts where
the covering overlaps the lead or other metallic casing of the cables.
We preferably shape the parts of our covering with flanges or other suitable
projections where the parts are intended to join one another, this serves the
double purpose of keeping the parts in place while they are being joined
together and also provided more metal at the edges where the seams will be
made and where consequently more metal will be required, furthermore this pro-
vision of metal flanges assists the making of good metallic joints where it is
necessary to carry out the work in difficult positions such as for instance in the
trenches dug in a roadway.
We may also carry out our invention by the use of suitably shaped covers or

page_text: boxes made in two or more parts conveniently divided and made of brass, iron
or other metals, with the parts tinned or otherwise suitably prepared in order that
they may be soldered together and also soldered to the lead coverings of the cables.
When the parts of the covering have been placed in position over the junction
of the cables and have been joined together and also joined to the lead casing of
the cables as hereinbefore described the space between the insulation of the con-
ductor joint and the metallic covering can be filled in with any suitable insula-
ting compound or oil which may be poured through a hole in the covering left
for the purpose and which hole may be subsequently covered up and hermetically
sealed.
In order that our invention may be more correctly understood, we will now
refer to the accompanying drawings.
Figure B, represents a cable joint with one half of our improved box around
it, this half being the flanged or lower half.
Figure A, is the corresponding part of such box and fits over the uncovered
part of the joint inside the flanges shown in Figure B.
Figure D, shows a joint covered complete with our improved boxes, in this
case the box is made entirely of lead or other suitable metal, and the joints
have been fused or "wiped" together in the manner in which plumbers usually
perform their work.
Figure C, shows a joint with box cut through and C, shows the flange referred
to and C, the hole by means of which the space between the cable and the
inside of box is filled with insulating compound, this hole afterwards being
sealed.
We do not confine the use of our invention to single cables as it can be applied
equally well to concentric and other electric conductors.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is ;-
1. Joint boxes for covering over joints in electric cables made of suitable metal
in order that the different parts of the box may be joined together and the box
joined to the lead cables where they enter same by means of soldering burning
or other suitable process for making good metal joints to such boxes substantially
as described.
2. The use of suitably shaped metallic boxes made in sections for covering
over the joints of electric cables, and the joining of such sections by means of
lead burning, wiping or soldering substantially as described.
3. Effecting the electrical continuation of the lead casing surrounding lead
covered electric cables where same are joined or branched off by means of two
or more metal covers which are joined together, and also joined on to the lead
coverings of the cables by fusing or burning the parts together substantially
as described.
4. The use of metal joint boxes for covering junctions of lead covered electric
cables so made as to enable the lead outers of cables to be fused or soldered to
such boxes without cutting the cables.
TY1
ocil
1
1000
CECIL C. FOWLER,
For THE MUTUAL ELECTRIC TRUST, LTD.,
HENRY REASON,
Director.
HERBERT C. HUGHES,
Secretary.