Improvements in or connected with Electrical Conductors for Heating Purposes.
Year: 1895

page_text: Date of Application, 8th Feb., 1895
Complete Specification Left, 25th Oct., 1895-Accepted, 30th Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in or connected with Electrical Conductors for
Heating Purposes.
I, HENRY EDMUNDS of 39 Victoria Street, in the City of Westminster,
Electrical Engineer do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to provide means whereby heating by means of
electricity can be effected in water, or other liquid, without injurious, or wasteful,
effects by the escape of electric current, or the setting up of electrolytic action,
due to the presence of the water, or other liquid. According to my invention I
provide a conductor for the current which will become heated thereby to the
necessary extent and this I cover or surround with a material which will allow of
the conduction of heat, but not of electricity, and this I preferably surround or
cover, with lead, or other metal, which, when the conductor is in use, is in contact
with the water or other liquid.
The conductor for the current can be made of any suitable material which will
become sufficiently heated, such, for example, as manganin and the covering of
this may be asbestos fibre.
When conductors thus made are passed into water, or other liquid, the electric
current will produce the requisite heat in the conductor for the current and the
beat from this will be conveyed through the covering and metal envelope to the
water, or other liquid, but the electric current will not escape, or cause electrolytic
action through the water, or other liquid.
Dated this 8th day of February 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, Londen, W.C., Agents.
Improvements in or connected with Electrical Conductors for
Heating Purposes.
I, HENRY EDMUNDS, of 39 Victoria Street in the City of Westminster,
Electrical Engineer do hereby declare the nature of my invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement:-
The object of my invention is to provide means whereby beating by means of
electricity can be effected in water, or other liquid without injurious, or wasteful
effects by the escape of electric current, or the setting up of electrolytic action,
due to the presence of the water, or other liquid. According to my invention
I provide a conductor for the current which will become heated thereby to the
necessary extent, and this conductor I cover, or surround, with a material which
will allow of the conduction of heat, but not of electricity, and this I preferably
surround or cover, with lead, or other metal, which when the conductor is in use, is
in contact with the water, or other liquid.

page_text: The conductor for the current can be made of any suitable material which will
become sufficiently heated, such, for example, as manganin, and the covering of
this may be asbestos fibre.
When conductors, thus made, are passed into water, or other liquid, the
electric current will produce the requisite heat in the conductor for the current,
and the heat from this will be conveyed, through the covering and metal envelope,
to the water, or other liquid, but the electric current will not escape, or cause
electrolytic action, through the water, or other liquid.
The conductor when of manganin will maintain its heating effect owing to
the manganin not being practically affected as regards its conductivity by change
of temperature, and the manganin conductor is therefore suitable in cases where
such maintenance of temperature is desirable. If however, a conductor (such as
copper for example), whose conductivity varies when the temperature varies, be
employed, this will act as an automatic regulator of the heating effect produced.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.-
1. Electrical conductors for heating purposes consisting of a conductor which
will become heated to a sufficient extent, and a covering of a material which will
allow of the conduction of heat, but not of electricity; substantially as hereinbefore
described.
2. Electrical conductors for heating purposes consisting of a conductor of
manganin, covered with asbestos fibre, surrounded by lead, or other metal; as
herein before explained.
Dated this 25th day of October 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.