New or Improved Manufacture of Insulating Material for Underground Electric Wires, Cables, or the like.
Year: 1896

page_text: Date of Application, 16th Mar., 1896
Complete Specification Left, 18th Jan., 1897-Accepted, 16th Mar., 1897
PROVISIONAL SPECIFICATION.
New or Improved Manufacture of Insulating Material for
Underground Electric Wires, Cables, or the like.
I, PAUL RAOUL DE FAUCHEUX D'HUMY of 136, Prince's Road, Liverpool in the
County of Lancaster, Civil and Naval Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object to produce a new or improved manufacture of
insulating material in a rapid and cheap way.
The following is a description of the invention. I take shale oil and refined
petroleum which I mix in a cold state. Into this compound I introduce ozokerite,
fine cork dust, sawdust or any like material in preference vegetal. I then add a
certain quantity of paraffin wax, and waste cotton or refuse and grease in the form
of animal fatty or vegetal oil in preference linseed or cotton seed oil. The whole of
the various ingredients are diluted in water and submitted to intense heat. The
waste or refuse cotton will carbonize in the liquid, and when entirely amalgamated
with all the compounds and the water evaporated, I add fresh waste cotton or cotton
wool and a small quantity of ozokerite. I allow the cotton wool to soak and then
let the product cool. The resulting material is pressed between cylinders and
converted into a fine sheet or can be applied to the wire to be insulated, direct in a
hot state.
The best proportions I have found so far for manufacturing my insulating material
are as follows, but these can be varied to suit circumstances:-
Shale oil -
Petroleum
Ozokerite
Cotton wool
Grease
Fat or seed oil
about 15 parts
15
"
"
20
"
"
20
""
10
"
"
10
"
"
10
"
"
وو
Water
It will be obvious, however, from the above that the recipe can be very largely
altered without materially interfering with its effectiveness. It is even sometimes
desirable to use instead of cotton wool other similar fibrous material, or very fine wood
shavings in mass. In that case I disintegrate the wood shavings and carbonize the
same in the boiling hydro-carbon compound.
Dated this 14th day of March 1806

page_text: VABLY DELE SPECIFICATION.
New or Improved Manufacture of Insulating Material for
Underground Electric Wires, Cables, or the like.
1, PAUL RAOUL DE FAUCHEUX D'HUMY, of 136, Prince's Road, Liverpool, in the
County of Lancaster, Civil and Naval 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 has for its object to produce a new or improved manufacture of
insulating material in a rapid and cheap way for underground wires, cables and
the like.
The following is a description of the invention.
I take shale oil and refined petroleum which I mix in a cold state. Into this
compound I introduce ozokerite and fine cork dust, sawdust or any like vegetable
material or peat. I then add a certain quantity of paraffin wax, and waste cotton or
refuse fibre and grease in the form of animal, fatty or vegetal oil, in preference
linseed or cotton seed oil. Water is added and the whole of the various ingredients
are submitted to boiling heat. The waste or refuse cotton will carbonize in the
liquid, and when entirely amalgamated with all the compounds and the water
evaporated, I add fresh waste cotton or cotton wool about equal in quantity to the
first lot and a small quantity of ozokerite. I allow the cotton wool to soak and
then let the product cool. The resulting material is pressed between cylinders and
converted into a fine sheet or can be applied to the wire to be insulated, direct in a
hot state.
The best proportions I have found so far for manufacturing my insulating material
are as follows, but these can be varied to suit circumstances:-
Shale oil-
Petroleum
Ozokerite
Paraffin wax
('otton wool
Grease
Fat or seed oil-
Water
about 15 parts
15
"
"
20
""
"
20
"
"
20
"
"
10
"
"
10
"
"
10
"
وو
It will be obvious, however, from the above that the recipe can be very largely
altered without materially interfering with its effectiveness. Thus the shale oil and
refined petroleum being of very similar character can be largely substituted the one
for the other, other forms of solid hydrocarbon can be used instead of ozokerite, such
for instance as paraffin wax, and the quantity of this solid hydrocarbon required
varies inversely with the quantity present in the shale oil and petroleum. In place of
cotton wool, especially of the first batch of cotton, any kind of cellulose can be used,
such as finely shaved or comminuted wood. The fats, oils and greases can be varied
largely and the one substituted for ano her. The heating is done in strong closed
vessels and to 600 degrees Fahrenheit for about 45 minutes. Where liable to the
attacks of insects a poisonous salt of arsenic or other poison not a conductor of
electricity can be added.
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 new or improved manufacture of insulating material substantially as and
for the purposes herein described.

page_text: 2. In the manufacture of insulating material the use of cellulose material, such as-
cotton disintegrated by heating in petroleum or other hydrocarbon substantially as
described.
Dated this 15th day of January 1897.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents..