Improvements in the Armouring, Covering, or Protecting of Electrical Cables and the like.
Year: 1892

page_text: Date of Application, 22nd Dec., 1892
Complete Specification Left, 14th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Armouring, Covering, or Protecting of
Electrical Cables and the like.
I HENRY EDMUNDS of 39 Victoria Street in the City of Westminster
Electrical Engineer do hereby declare the nature of my invention to be as
follows:-
My invention has for its object to provide an armouring covering or protection
which is very readily applied and which can be so arranged that it is a much more
efficient protector than armourings coverings or protections which have hitherto
been applied by winding or plaiting metal wires around the conductor.
According to my invention I provide strips of thin and flat metal which I apply
by plaiting for instance in a suitable plaiting machine the flat strips allowing of the
plaited armouring or covering being very efficiently applied to either round or flat
conductors or cables.
In order to protect the conductor or cable against injury by penetration from the
outside I apply by plaiting or the like two or more such layers of flat metal strips
in such manner that the interstices between the strips of one layer are not
coincident with those between the strips of the other layer or layers.
In cases where it is desired to provide the cable or the like with a waterproof
coating which can be washed and at the same time to provide for an ornamental
appearance of the cable, I prefer to effect this coating by means of a material
which is transparent or semi-transparent and at the same time tough and waterproof
such for instance as gum-elastic or the like. By this means the bright metal of the
strips (it may be a plaiting of metals of two or more colours) will be seen through
the transparent coating and can be arranged to give a very ornamental effect.
Dated this 22nd day of December 1892.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in the Armouring, Covering, or Protecting of
Electrical Cables and the like.
I HENRY EDMUNDS of 39 Victoria Street in the City of Westminster
Electrical 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 :---
My invention has for its object to provide an armouring, covering or protection,
which is very readily applied and which can be so arranged that it is a much more
efficient protector than armourings, coverings, or protections, which have hitherto
been applied by winding, or plaiting, metal wires around the conductor. According
to iny invention I provide strips of thin, and flat, metal, which I apply by plaiting,
for instance, in a suitable plaiting machine, the flat strips allowing of the plaited
armouring, or covering, being very efficiently applied to either round, or flat,
conductors, or cables.
In order to protect the conductor, or cable, against injury by penetration from
the outside I apply by plaiting, or the like, two, or more such layers of flat metal
strips in such manner that the interstices between the strips of one layer are not
coincident with those between the strips of the other layer, or layers.

page_text: In cases where it is desired to provide the cable, or the like, with a water-proof
coating which can be washed, and at the same time to provide for an ornamental
appearance of the cable I prefer to effect this coating by means of a material which
is transparent, or semi-transparent, and also tough, and waterproof, such, for
instance, as gum elastic, or the like. By this means the bright metal of the strips,
(it may be a plaiting of metals of two, or more, colours) will be seen through the
transparent coating, and can be arranged to give a very ornamental effect.
Figure 1 of the accompanying drawings represents part of an electrical cable
and also a cross section thereof the said cable being arinoured, covered, or protected,
according to my invention by strips a, plaited, or equivalently interlaced, or inter-
twined, around the cable.
Figure 2 shews two layers (a and a²) of such plaited, interlaced, or intertwined,
strips, the interstices of the one layer (a), not coinciding with the interstices of the
other layer, (a), so that the cable, with its covering, is not only flexible, but is
protected from danger of penetration. There may be more than two such layers
if so desired.
The cables thus covered may have gum-elastic, or the like, applied to the
covering, as hereinbefore explained.
The cables may be round, flat, or of any other desired shape.
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 I
claim is :-
1. The armouring, covering, or protecting, of electric cables, and the like, by
plaiting, interlacing, or intertwining, around them, strips of thin flat metal, sub-
stantially as herein before described.
2. The armouring, covering, or protecting, of electric cables, and the like, by
plaiting, interlacing, or intertwining, around them, two, or more, layers of strips of
thin flat metal; so that the interstices of one layer do not coincide with the
interstices of the layer or layers next to it substantially as and for the purpose
herein before described.
3. The armouring, covering, or protecting, of electric cables, or the like, by
plaiting, interlacing, or intertwining, around them a layer, or layers, of thin flat
metal as herein before described and claimed, and then applying a covering, or
coating, of gum-elastic, or other transparent, or semi-transparent, tough, and
waterproof, material, substantially as and for the purposes hereinbefore described.
Dated this 14th day of September 1893.
J. H. JOHNSON & Co.,
Agents.