Improvements in Electrical Current Regulators and Electrical Heating Apparatus.
Year: 1893

page_text: Date of Application, 5th Dec., 1893
Complete Specification Left, 18th Aug., 1894-Accepted, 22nd Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Electrical Current Regulators and Electrical
Heating Apparatus.
I, SAMUEL WELLS CUTTRISS, of the Elniwood Electrical Works, Camp Road,
Leeds, Yorkshire, Electrical Engineer, do hereby declare the nature of this
invention to be as follows:-
My improvements relate to apparatus used for regulating the flow or strength of
an electric current & also to apparatus in which it is sought to utilize the heat
generated by the electric energy absorbed for cooking, heating & other purposes.
For the resisting medium I employ a material of high specific electrical resistance,
such as carbon or a mixture, in suitable proportions, of carbon with clays, asbestos,
mica or other suitable substances. This material is used in the form of discs or
blocks of suitable size & shape. Between the discs or blocks are placed thin sheets
of metal of relatively much larger area, the object of which is to provide a large
surface for the radiation of the heat generated. The whole are firmly clamped
together either on an insulated rod, or in any other suitable manner, & provided
with connections to which are attached the wires conveying the electric energy.
Dated this Fourth day of December 1893.
SAMUEL WELLS CUTTRISS.
COMPLETE SPECIFICATION.
Improvements in Electrical Current Regulators and Electrical
Heating Apparatus.
1, SAMUEL WELLS CUTTRISS Electrical Engineer Elmwood Electrical Works
Camp Road Leeds, Yorkshire, 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 :-
My improvements relate to apparatus used for regulating the flow or strength of
an electric current & also to apparatus in which it is sought to utilize the heat
generated by the electric energy absorbed either for cooking, heating, or other
purposes.
'
For the resisting medium I employ a material of high specific electrical resistance,
such as carbon, or a mixture in suitable proportions of carbon with clays, asbestos,
inica or other suitable substances. The material is used in the form of discs or
blocks of any suitable size & shape. Between the discs or blocks are placed thin
sheets of metal of relatively much larger area, the object of which are to provide a
large surface for the radiation of the heat generated. The whole are firmly clamped
together either on an insulated rod, or in any other suitable manner, & are provided
with connections to which are attached the wires conveying the electric energy.
Referring to the accompanying drawings,
Fig. 1 illustrates one form in which the parts may be assembled together, but the
particular shape & relative dimensions there shown are not an essential feature of
the invention.
A, A, etc. represent the carbon discs or blocks, which are separated from each
other by the metal discs or radiators B, B, etc. The connections or terminals are
shown at C, C. The whole are supported on the insulated rod D, provided with

page_text: nuts EE, by means of which the pressure between the various parts, & consequently
the clectrical resistance, can be varied as required.
Fig. 2, is a sectional view drawn through the centre of a carbon disc.
Having now particularly described & ascertained the nature of my said
invention, & in what manner the same is to be performed, I declare that what !
claim is :-
The combination of discs or blocks of carbon or other substances of high specific
electrical resistance, together with discs of metal of relatively larger area,
substantially as described.
Dated this 17th day of August 1894.
SAMUEL WELLS CUTTRISS.