Year: 1886

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex, 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 a cable for telephonic, telegraphic and other electrical
purposes generally; the object being to provide a cable in which leakage shall be
prevented and inductive effects of any wire upon the others obviated as far as
possible.
To this end the invention consists in a cable constructed as hereinafter described.
In the accompanying drawing
Figures 1, 3, 5 and 7 are side views of a cable embodying this invention, while.
Figures 2, 4, 6 and 8 are sections thereof on lines 2-2, 4-4, 6-6 and 8-8,
respectively.
A is the core wire of the cable which wire may be of any suitable size and
material so that it is a good or fair conductor of electricity. Upon and around the
core-wire are spirally wound the conductors B, each of which is provided with its
own insulating coating b, so that each is independently insulated from all the
others and from the core wire A.
This insulation may be of any of the well known insulating materials, such as
india rubber, gutta percha, asphaltum or tar, either alone or in any of the usual
combinations of such insulating materials.
Upon these wires B is laid a conducting strip C, shown in Figures 1 to 4 both
inclusive which may be spirally wound thereon as shown, or laid or folded
longitudinally as may be desired.
This strip may be of tin-foil or of any suitable sheet metal thin enough to be
flexible, and applied in any suitable manner. This in turn is protected by the
exterior fibrous covering E Figures 1 and 2 braided, spun or woven thereon in any
of the well known ways of applying a fibrous jacket or casing to wires.
When desired however to insulate the covering C, and the interior cable more
thoroughly than would be accomplished by this fibrous jacket or casing E, &
covering D, of india rubber, gutta percha, asphaltum, tar, or equivalent insulating
material or compound is first applied to and over the strip C, and the jacket or
casing E applied upon the exterior thereof, as shown in Figures 3 and 4.
In lieu of the tin-foil, as described a wire braid F, as shown in Figures 5 and 6
can be used, preferably coarsely and openly braided, or wire can be applied in any
suitable manner on the electric wires B; and the insulating material D applied

page_text: to the outside thereof as before which will fill all the openings or interstices of the
wire braid.
In Figures 7 and 8 is shown a cable constructed like that shown in Figures 3
and 4 but as having a covering of lead G over the braid E, which covering serves
as a protector for the cable and allows the cable to be used under water.
In Figure 7 the foil C and core wire A are shown as connected electrically by
conducting wire H, which wire is first wound several times around the foil and
then passed between the insulated wires B to, and wound several times around,
the core wire A.
The wire H is then connected to the ground by the same wire H, or by
another electric conducting wire which will be at the end of the cable.
The foil and core-wire can be connected at several places along the line of the
cable to ensure the electrical connection of the two.
By this electrical connection of the foil and core wire and their electrical
connection with the ground induction and leakage are obviated to a great degree.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to
me by my foreign correspondent I declare that what I claim is
First. An electrical conducting cable consisting of a central conducting core a
series of independently insulated wires wound spirally there around a conducting
strip of foil or thin sheet metal or wire applied thereover, and a braided or
woven fibrous protecting jacket enclosing the whole structure, substantially as
described.
Second. An electrical conducting cable consisting of a central conducting core,
a series of independently insulated wires spirally wound around the core, a strip of
foil or other thin sheet conductor or wire wound, folded or braided thereupon, a
coat of insulating material placed over and around the foil or sheet or wire
conductor, and a braided or woven fibrous protecting jacket enclosing the whole
structure, substantially as described.
Third. An electrical conducting cable consisting of a conducting core, a series
of wires each independently insulated and spirally wound around the core, a
conducting strip of foil or thin sheet metal or wire applied thereover, a coat of
insulating material placed over and around the foil or sheet metal or wire
conductor, and a braided or woven fibrous protecting jacket enclosing the whole
structure, substantially as described.
Fourth. An electrical conducting cable consisting of a conducting core, a series
of wires each independently insulated and spirally wound around the core, a strip
of foil or other thin sheet conductor or wire wound, folded or braided thereupon,
a coat of insulating material placed over and around the foil or sheet or wire
conductor, a braided or woven fibrous jacket covering the insulating material, and
a lead covering enclosing the whole structure, substantially as described.
Fifth. An electrical conducting cable consisting of a conducting core, a series
of wires each independently. insulated and spirally wound around the core a
conducting strip of foil or thin sheet metal or wire applied thereover, and a fibrous
protective covering, said foil or thin sheet metal or wire and core wire being
connected together by an electric conducting wire and said foil or thin sheet metal
or wire or core wire being electrically connected to the ground.
9000
HASELTINE, LAKE & Co.,
For the Applicant.