Improvements in Submarine Telegraphic Cables.
Year: 1888

page_text: Date of Application, 18th Dec., 1888
Complete Specification Left, 20th July, 1889-Accepted, 24th Aug.,
1889
PROVISIONAL SPECIFICATION.
Improvements in Submarine Telegraphic Cables.
I, JOHANN CARL Ludwig Loeffler, of 12 Queen Annes Gate, Westminster, in
the County of Middlesex, Civil Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to an arrangement of armour for protecting submarine
telegraphic cables from the effects of ice so that the cable shall not be crushed or
injured thereby.
For this purpose I string a number of steel or other metal ferrules on the cable or
on such parts of it as are liable to be damaged by ice, either inside or outside of its
wire sheathing or in place of one of the wire sheathings.
I prefer first to cover a sheathed cable with a layer of jute or hemp; on this
I place a series of short steel ferrules having spigot and faucet ends fitting each other
loosely. Over these ferrules I place a covering of jute or hemp and compound and
then a sheathing of iron or steel wires or of hoop iron with an outer protective
covering if desired.
Sometimes I also place elastic or soft washers or rings of caoutchouc or the like, in
the faucets of the metal ferrules to make sure that the ferrules shall be at a sufficient
distance apart to allow the cable to bend freely.
Dated this 18th day of December 1888.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Submarine Telegraphic Cables.
I, JOHANN CARL LUDWIG LOEFFLER, of 12 Queen Annes Gate, Westminster, in
the County of Middlesex, Civil 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 an arrangement of armour for protecting submarine
telegraphic cables from the effects of ice so that the cable shall not be crushed or
injured thereby.
For this purpose I string a number of steel or other metal ferrules or hollow
prisms on the cable or on such parts of it as are liable to be damaged by ice either
inside or outside of its wire sheathing or in place of one of the wire sheathings.
I prefer first to cover a sheathed cable with a layer of jute or hemp and then to
place on this cable a series of short steel ferrules having spigot and faucet ends
fitting each other loosely. Over these ferrules I prefer to place a covering of jute or
hemp and compound and then a sheathing of iron or steel wires or of hoop iron with
an outer protective covering if desired.
Sometimes I also place elastic or soft washers or rings of caoutchouc or the like, in
the faucets of the metal ferrules to make sure that the ferrules shall be at a sufficient
distance apart to allow the cable to bend freely.
The accompanying drawing is a longitudinal section of a cable showing one method
of carrying out my invention.
A is the wire sheathed cable of any ordinary construction, B B are metal ferrules
strung upon it these being made with spigot and faucet ends to joint to one another,
preferably with an interposed washer of caoutchouc or other elastic packing material
which can yield when the cable is bent, and which prevents the ferrules from jointing
together too closely for flexure of the cable.

page_text: The series of ferrules B is covered by a layer D. of jute or hemp over which is
laid the outer wire or hoop sheathing E which may itsolf have an external covering
of jute or hemp served with tarry matter or the analogous substances or compounds
usually employed.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
A telegraph cable on which are strung metal ferrules or hollow prisms forming
part of its protective covering, substantially as and for the purpose herein set forth.
Dated this 20th day of July 1889.
ABEL & IMRAY,
Agents for the Applicant.