Improvements in Electric Regulators.
Year: 1887

page_text: Date of Application, 21st Dec., 1887
Complete Specification Left, 31st Aug., 1888
Complete Specification Accepted, 2nd Nov., 1888
Improvements in Electric Regulators.
I NICHOLAS BENARDOS of Bolshaya Konnshennaya No. 9 St. Petersburg in the
Empire of Russia Gentleman do hereby declare the nature of this invention to be
as follows:-
This invention relates to a cheap and simple construction and arrangement of
electric resistance by introducing one, two, or more of which into a circuit currents
can be readily regulated.
I will describe an arrangement of five resistances according to my invention
referring to the accompanying drawings.
Fig. I is a plan with part of the casing broken off to shew the interior. Fig. 2 is
an end view partly in section, and Fig. 3 is a longitudinal section of one of the
resistances. a is a tube or casing which may be cylindrical, and, if it is of metal
or other conducting material, it has an internal lining of insulating material. It is
charged with a mass d of granulated carbonaceous material, such as small fragments
of charcoal mixed with graphite plumbago or like substance, which can be more
or less compressed by screwing up metallic end plates e, the screwed stems of
which pass through end covers el of insulating material and engage in forked
brackets g which are fixed on an insulating base h. The nuts on the stems can be
turned by a spanner such as is shewn at Fig. 4. The brackets g can be electrically
connected, parallel or in series as desired, by inserting metallic plugs k between
them. The whole set of resistances, of which there may be a number greater or
less than the five shewn in the drawings, may be enclosed in a casing l.
Dated this 21st day of December 1887.
ABEL & IMRAY,
Agents for the Applicant.

page_text: I, NICHOLAS BENARDOS of Bolshaya Konnshennaya No. 9, St. Petersburg in the
Empire of Russia, Gentleman, 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 relates to a cheap and simple construction and arrangement of
electrical resistance by introducing one two or more of which into a circuit currents
can be readily regulated.
I will describe an arrangement of five resistances according to my invention
referring to the drawings accompanying my provisional Specification.
Fig. I is a plan with part of the casing broken off to shew the interior. Fig. 2
is an end view partly in section, and Fig. 3 is a longitudinal section. a is a tube
or casing which may be cylindrical, and, if it is of metal or other conducting material
it has an internal lining of insulating material. It is charged with a mass d of
granulated carbonaceous material, such as small fragments of charcoal mixed with
graphite, plumbago or like substance which can be more or less compressed by
screwing up metallic end plates e, the screwed stems of which pass through end
covers of insulating material and engage in forked brackets which are fixed on
an insulating base h. The nuts on the stems can be turned by a spanner such as
is shewn at Fig. 4. The brackets can be electrically connected parallel or in series
as desired by inserting metallic plugs & between them. The whole set of resistances,
of which there may be a number greater or less than the five shewn in the Drawings,
may be enclosed in a casing 1.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. An electric resistance regulator wherein a mass of carbonaceous material is more
or less compressed between conducting plates within an insulating casing, substantially
as described.
2. The combination of a number of regulators of the kind referred to above with
connections for grouping them in tension or in quantity, substantially as described.
Dated this 31st day of August 1888.
ABEL & IMRAY,
Agents for the Applicant.