Year: 1898

page_text: We W. T. HENLEY'S TELEGRAPH WORKS COMPANY LIMITED, of 27, Martin's
Lane, in the City of London, and RICHARD OLIVER WRIGHT, of 49, Albemarle
Road, Beckenham, in the County of Kent, Engineer, do hereby declare the nature
of this invention to be as follows:-
This invention relates to improved end connections for electric cables, whether
of the single, double-concentric, or multiple-concentric type, and whereby the
exposed ends of the insulation layers of the cable are securely sealed.
We will describe as a typical example, the application of our invention to a
double concentric cable.
Successive lengths of the conductors and insulations of the cable having been
laid bare, a metal collar is slipped over and soldered to the metal sheathing of the
cable, and a tubular sleeve externally screw-threaded at its inner end is slipped
over and soldered to the bared length of the inner conductor. The collar is shoul-
dered and adapted to fit within and close the end of a cylindrical casing of
insulating material which encloses the whole of the bared length of the outer
insulation including adjacent portions of the sheathing and of the outer con-
ductor. The other end of this insulating casing is closed by a disc-like head or
flange upon the end of a metal sleeve which is slipped upon and soldered or other-
wise united to the bared length of the outer conductor. This sleeve has a second
similar disc-like head or flange at the opposite end adapted to close the end of a
second cylindrical casing of insulating material which encloses the whole of the
bared length of the insulation between the outer and inner conductors including
adjacent parts of the conductors.
The other end of this casing is closed by a loose disc which is adapted to screw
as a nut upon the threaded part of the sleeve soldered to the inner conductor as
above mentioned, the various discs or heads being shouldered so as to fit within
and abut against the ends of the insulating casings, so that by screwing up the
last mentioned disc, the joints are made tight and the casings are securely retained
in position. These casings are provided with filling holes and after they have
been fixed in position as above described, the spaces within them and around the
insulation layers which they enclose, are filled up with insulating compound in a
plastic state by which the ends of the insulation layers are thus effectually sealed.
The electrical connections are made with the metal sleeves upon the inner and
outer conductors of the cable.
רד
1
11
1
1000
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.

page_text: COMI
Improved End Connections for Electric Cables.
We W. T. HENLEY'S TELEGRAPH WORKS COMPANY LIMITED, of 27, Martin's
Lane, Cannon Street, in the City of London and RICHARD OLIVER WRIGHT, of
49, Albemarle Road, Beckenham, in the County of Kent, Engineer do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:
This invention relates to means of making end connections with electric cables
(whether of the single, double-concentric, or multiple-concentric type) the object
of the invention being to ensure that the exposed and severed ends of the insulation
layers of the cable shall be securely sealed up.
We will describe the application of our invention to a double concentric cable,
of which we have illustrated a typical example in the accompanying drawing
which represents in longitudinal section of the improved connection, the con-
ductors and insulations of the cable being shown as having been laid bare in
successive lengths to receive the connection device.
A is a metal collar which is slipped over and soldered to the metal sheathing B
of the cable, and C is a tubular thimble externally screw-threaded at c towards
its inner end which is slipped over and soldered to the bared length of the inner
conductor D. The collar A has a shoulder a (or it may be a ring screwing as a
nut upon a threaded part of the collar A) and is adapted to fit at a¹ within, and
close, the end of a cylindrical casing E of insulating material against the end of
which the shoulder a abuts. This casing E encloses the bared length of the outer
insulation F, and in particular the severed end thereof, including the adjacent
portions of the sheathing B and of the outer conductor G of the cable. The other
end of this insulating casing E is similarly closed by a disc-like head or flange H
upon the end of a metal thimble I which is slipped upon and soldered or other-
wise united to the bared length of the outer conductor G, the head or flange H
being shouldered as at h h to abut against and fit within the end of the casing E.
This thimble I has a second similar dise-like head or flange K at the opposite
end shouldered as at and adapted to similarly close the end of a second
cylindrical casing E¹ of insulating material wherein is enclosed the bared length
of the insulation L between the outer conductor G and the inner conductor D,
and in particular the severed end of such insulation layer, including adjacent
parts of the said conductors. The other end of this casing is closed by a loose
disc M which is shouldered as at m ml so as to abut against and fit within the
end of the casing E' and which is adapted to screw as a nut upon the threaded
part of the sleeve C soldered to the inner conductor as above mentioned, so that
by screwing up the disc M the joints of the casings EE', and the discs by which
their ends are closed, are made tight and the casings are securely retained in
position. These casings are provided with filling holes e and after they have been
fixed in position as above described, the spaces within them and around the insu-
lating layers which they enclose, are filled up with insulating waterproof
compound N in a plastic state by which the enclosed severed ends of the insulation
layers F and L are thus effectually sealed up.
The electrical connections are made with the metal thimbles or sleeves C and I
soldered to the inner and outer conductors of the cable as above described.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
1. An end connection for an electric cable whereby the severed end of the

page_text: insulation is sealed up, said means consisting of a cylindrical casing of insulating
material closed at the ends by fixed and screw plugs connected with the sheathing
and conductor of the cable respectively, the said casing enclosing the cut end of
the insulation and being filled with insulating compound after being applied to
the cable substantially as specified.
2. The herein described means of sealing up the severed ends of the insulation
layers of a concentric cable and of making connection with the ends of the con-
ductors, said means comprising a cylindrical casing of insulating material enclosing
each layer of insulation and closed at the ends by plugs carried by two thimbles
soldered respectively to the sheathing and conductors and provided with means of
tightening up the said closure, the casings being filled up with insulating com-
pound the whole substantially as herein described and shown in the drawings.
Dated this 31st day of December 1898.
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.