improvements in the insuraion Submarine Telegraphic Cables and other Electrical Conductors.
Year: 1887

page_text: Date of Application, 24th Oct., 1887
Complete Specification Left, 24th Aug., 1888
Complete Specification Accepted, 19th Oct., 1888
improvements in the insuraion
Submarine Telegraphic Cables
and other Electrical Conductors.
I, REGINALD HADDAN of the firm of Herbert & Co. Patents Agents of
18 Buckingham Street Strand W.C. London in the County of Middlesex Civil
Engineer, do hereby declare the nature of this invention a communication to me
from abroad by Emil Georg Prillwitz of Berlin in the Empire of Germany Engineer
and Patent Agent to be as follows:-
--
This invention relates to the insulation of submarine and land cables or telegraphic
telephonic or other wires, and generally to such conductors or leads for electricity as
are required to be insulated.
The improvements consist in covering the cable or the like with strips of tinfoil
having on the side towards the cable, a comparatively thick coating of powdered glass,
held upon the tin foil by means of a suitable adhesive substance such as caoutchouc,
indiarubber or compound thereof.
This insulating layer may be further covered with a layer of caoutchouc or the
like inclosed in incombustibly impregnated silk or other suitable material, or with
tarred felt and asphaltum or other material usually employed for insulating or
protecting the insulation, according to the purpose for which the cable or conductor
is intended.
Dated this 24th dor of October 1987

page_text: COMPLETE SPECIFICATION.
Improvements in the Insulation of Submarine Telegraphic Cables
and other Electrical Conductors.
I REGINALD HADDAN of the firm of Herbert & Co., Patent Agents of
18 Buckingham Street, Strand W.C. London in the County of Middlesex, Civil
Engineer do hereby declare the nature of this invention a communication to me
from abroad by Emil Georg Prillwitz of Berlin in the Empire of Germany,
Engineer and Patent Agent 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 the insulation of submarine or land cables, or telegraphic,
telephonic or other wires and generally to such conductors or leads for electricity as
are required to be insulated.
The improvements consist in covering the cable or the like with strips of tinfoil
having on the side towards the cable a comparatively thick coating of powdered glass
held upon the tin foil by means of a suitable adhesive substance such as caoutchouc
indiarubber or compound thereof.
This insulating layer may be further covered with a layer of caoutchouc, gutta
percha or the like enclosed in incombustibly impregnated silk or other suitable
material or with tarred felt and asphaltum wire covering or other material usually
employed for insulating or protecting the insulation according to the purpose for
which the cable or conductor is intended.
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 1
claim is.
1. Coating electrical conductors with an insulating material composed of powdered
glass secured by metal foil substantially as described.
2. Covering above insulating material with caoutchouc or equivalent enclosed in
silk or other fabric with or without tarred felt asphaltum and wire covering as
described.
Dated 1
J
A
+ 1000