An Improvement in Insulated Electric Conductors.
Year: 1890

page_text: Date of Application, 27th Mar., 1890
Complete Specification Left, 5th Dec., 1890-Accepted, 31st Jan., 1891
PROVISIONAL SPECIFICATION.
An Improvement in Insulated Electric Conductors.
I, EUGENE FRIEDRICH AUGUST OBACH, Analytical Chemist and Electrician,
2 Victoria Road, Old Charlton, Kent, do hereby declare the nature of this invention
to be as follows:-
Copper and other wires used as conductors of electricity, when they are insulated
with materials containing sulphur, such as vulcanized india rubber, are subject to
the destructive action of the sulphur. It has been usual to protect the wires against
this action by coating them with tin and in addition thereto with a layer of
unvulcanized rubber. This, besides being expensive, is not entirely reliable since
it has been found that, notwithstanding these precautions, the sulphur frequently
attacks the copper in course of time.
My invention relates to novel and effective means of protecting conducting wires
or their lead or other metal sheathings, against the action of sulphur, which I effect
in the following manner. I coat the wire with some gelatinous substance such as
glue, isinglass or the like, either alone or together with a serving of some fabric
such as paper or textile material. The vulcanized material can then be applied
directly over the wire thus coated, without requiring any other separating materials.
For the protection of the sheathing against sulphur the insulated wire is similarly
coated with gelatinous material.
Dated this 27th day of March 1890.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in Insulated Electric Conductors.
1, EUGENE FRIEDRICH AUGUST OBACH, Analytical Chemist and Electrician,
of 2 Victoria Road, Old Charlton, Kent, 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 :-
Copper and other wires used as conductors of electricity when they are insulated
with inaterials containing sulphur, such as vulcanized india rubber, are subject to the
destructive action of the sulphur. It has been usual to protect the wires against
this action by coating them with tin and in addition thereto with a layer of
unvulcanized rubber. This, besides being expensive, is not entirely reliable since it
has been found that notwithstanding these precautions the sulphur frequently attacks
the copper in course of time.
My invention relates to novel and effective means of protecting conducting wires
or their lead or other metal sheathings, against the action of sulphur, which I effect
in the following manner. 1 coat the wire with some gelatinous substance such as
glue, isinglass or the like, either alone or together with a serving of some fabric
such as paper or textile material. The vulcanized material can then be applied
directly over the wire thus coated without requiring any other separating materials.
For the protection of the sheathing against sulphur the surface of the insulated
conductor under the sheathing is similarly coated with gelatinous material.
Although I have described my invention as applied to wires, obviously it is
applicable to metallic conductors in other forms, and not only to bare wires or
conductors, but also to such as may be tinned or otherwise coated with metal.
ונן

page_text: 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 :-
Protecting electric conductors with their metallic sheathings from the action of
sulphur contained in the material employed for insulation by interposing between
the metal and the insulating material a coating of gelatinous substance with or
without paper or textile fabric, substantially as herein described.
Dated this 5th day of December 1890.
ABEL & IMRAY,
Agents for the Applicant.