An Improved Form of Electrically Heated Curling Tongs.
Year: 1894

page_text: Date of Application, 16th Aug., 1894
Complete Specification Left, 16th May, 1895-Accepted, 22nd June, 1895
PROVISIONAL SPECIFICATION.
An Improved Form of Electrically Heated Curling Tongs.
We OCTAVIUS MARCH of 70 Sinclair Road Kensington W. Electrical Engineer
and AUGUSTUS WINTERBOTTOM of 16 Sloane Street S.W. Surgeon do hereby
declare the nature of this invention to be as follows:-
Our invention consists of an improved form of curling tongs constructed in such
a manner that the same may be heated by an electric current without the use of a
separate stove or heater.
The following is the method we adopt in constructing same.
In place of the solid metal rod or rods which form the part of curling tongs
usually heated by gas, spirit, electric stove or other external means and with which
when hot the hair is manipulated we fix a thin tube of copper silver or other
suitable metal and in this tube we place a resistance which may be made of carbon
wire or any other suitable material.
This resistance is insulated from the tube by means of some suitable insulating
material such as mica or asbestos, with the exception of one end only where it is
electrically connected with the tube the other end being connected to a suitable
insulated wire which is brought out through the handle of the tongs.
The whole of the metal work of the tougs is connected with a second insulated
wire these two insulated wires forming the terminals by which the curling tongs
are attached to any suitable electric generator or conductors and a suitable
current passed through the resistance in the tube to heat it up to any required
degree.
Dated this 16th day of August 1894.
An Improved Form of Electrically Heated Curling Tongs.
We OCTAVIUS MARCH, of 70 Sinclair Road, Kensington, W., Electrical
Engineer, and AUGUSTUS WINTERBOTTOM, of 16 Sloane Street, Surgeon, 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 for an improved form of electrically heated curling tongs relates
to appliances for manipulating the hair by means of heat, in which the tongs or
the like are heated internally by means of an electric current without the use of a
separate or external stove or heater and consists essentially in constructing a
curling tongs which shall not be liable to become overheated.
In the accompanying sheet of illustrative drawings,
Fig. 1 is a sectional elevation of a curling tongs constructed according to this
invention and

page_text: One or both legs of the curling tongs is formed of a thin tube a and an electric
resistance b is placed in the tube a insulated therefrom and connected with suitable
insulated conductors c brought out through the handle d so that they can readily be
connected to a source of electricity. On passing an electric current through the
resistance it is heated up to the required temperature without the metal work of
the tongs or other appliances forming any part of the electric circuit.
In cases where the electric energy to be employed is of low tension, one end of
the resistance may be attached to an insulated wire passing through the handle,
and the other end of the resistance be electrically connected with the tube the
whole of the metal work of the tongs or other appliances being connected to a
second insulated wire, the two insulated wires forming the terminals for attachment
to the source of electricity.
The nature and amount of resistance employed necessarily varies with the tension
of the current to be used, but must be so arranged that the tongs or other
appliances are when connected with an electric circuit brought to a suitable
temperature without becoming unduly hot and will maintain such suitable tempera-
ture so long as they remain upon the electric circuit. We find that this is effected
by employing a resistance which absorbs about eight watts for each tube employed,
but we do not confine ourselves to this amount of energy. The resistance 6 consists
of a central wire e insulated by spiral windings f of asbestos and of an outer
spiral wire g surrounding the central wire and also insulated by spiral windings h
of asbestos. The inner ends of the wires e and g are connected together and the
outer ends pass through the plug and thence through the handle d. The metal
tube a fits on the plug i and its outer end is closed by the plug 1. The resistance
can thus be readily got at for repairs.
This arrangement of curling tongs is specially suitable where the electric
current is laid on permanently at the place where it is to be used and in use its
temperature is maintained as the current is passed through the curling tongs even
when in use.
Having now particularly described and ascertained the uature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
An insulated electric resistance consisting of an insulated central wire or helix
and an insulated outer helix surrounding the said central wire or helix and
insulated by spiral windings of insulating material, the whole arranged substantially
as described and adapted to be placed within the hollow arm of a curling tongs to
heat the same.
Dated this 16th day of May 1895.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.