IMPROVE- MENTS IN INSULATING COMPOSITIONS TO BE USED IN COATING OR COVERING EDMA
Year: 1882

page_text: LETTERS PATENT to Charles James Allport of 161 Queen Victoria Street
London in the County of Middlesex Engineer and Robert Punshon of
Brighton in the County of Sussex Engineer for an Invention of IMPROVE-
MENTS IN INSULATING COMPOSITIONS TO BE USED IN COATING OR COVERING
EDMA
PROVISIONAL SPECIFICATION left by the said Charles James Allport and
Robert Punshon at the Office of the Commissioners of Patents on the
19th August 1882.
CHARLES JAMES ALLPORT 161 Queen Victoria Street London, in the County of
Middlesex Engineer, and ROBERT PUNSHON of Brighton in the County of Sussex,
Engineer IMPROVEMENTS IN INSULATING COMPOSITIONS TO BE USED IN COATING
OR COVERING WIRES AND APPLIANCES EMPLOYED IN CONDUCTING ELECTRICITY FOR
TELEGRAPHIC, TELEPHONIC, LIGHTING, AND OTHER PURPOSES
"
The object of the invention is to provide for coating electrical, telephonic and
like wires compounds which shall be durable easily applied not liable to crack,
firmly adhesive and provide good insulation as regards the passage of electric
currents therethrough.
For the above purpose under the first part we incorporate or mix powdered
glass or silica in a finely divided state and boiled linseed oil in about equal parts
by weight and coat or cover the wire with the compound in any convenient way.
After coating the compound is allowed to dry. More than one coat may be
applied. The wire after each or all the coats is covered with tape or equivalent
material in the usual manner to prevent injury to the said insulating coating.
Under the second part. We incorporate or mix equal or nearly equal parts by
weight of powdered glass and india rubber or like gum dissolved in benzole
naphtha bi-sulphide of carbon or other suitable solvent and use the compound
produced in the manner setforth under the first part.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Charles James Allport and Robert Punshon in the Great Seal
Patent Office on the 19th February 1883.
CHARLES JAMES ALLPORT of 161 Queen Victoria Street, London, in the County
of Middlesex Engineer, and ROBERT PUNSHON of Brighton in the County of Sussex.
Engineer. "IMPROVEMENTS IN INSULATING COMPOSITIONS TO BE USED IN COATING
OR COVERING WIRES AND APPLIANCES EMPLOYED IN CONDUCTING ELECTRICITY FOR
TELEGRAPHIC, TELEPHONIC, LIGHTING AND OTHER PURPOSES
"
The object of the invention is to provide for coating electrical, telephonic and
like wires compounds which shall be durable, easily applied, not liable to crack,
firmly adhesive and provide good insulation as regards the passage of electric
currents therethrough.
For the above purpose.
Under the first part. We incorporate or mix powdered
glass or silica in a finely divided state, and boiled linseed oil in about equal parts
by weight, and coat or cover the wire with the compound in any convenient way.
After coating, the compound is allowed to dry. More than one coat may be
applied. The wire after each or all the coats is covered with tape or equivalent
material in the usual manner to prevent injury to the said insulating coating.
Under the second part. We incorporate or mix equal or nearly equal parts by
weight of glass and india-rubber or like gum dissolved in benzole naptha bi-
sulphide of carbon or other suitable solvent and use the compound produced in the
manner setforth under the first part.
Having now described the nature of the said invention and particularized the
same in such manner that others will be enabled to carry our improvements into
effect We claim :-
First. The insulating compound consisting of powdered glass or silica and boiled
linseed oil in about the proportions stated and applied substantially as setforth.
Second. The insulating composition consisting of the ingredients mentioned
prepared substantially as setforth.
In Witness Whereof we the said Charles James Allport and Robert Punshion
have hereunto set our hands and seals the 19th day of February in the
year of our Lord One thousand eight hundred and eighty three