An Electric Regulator.
Year: 1896

page_text: An Electric Regulator.
WALTER EMMOTT 1 South Parade Halifax Electrical Engineer do hereby declare:
the nature of this invention to be as follows:-
In order to regulate the amount of electricity passing through any circuit for
instance a circuit of incandescent lamps I employ an impedence coil and by altering
the relative positions of the core and coil I vary the amount of electricity passing-
I attain these relative alterations by means of a handle with the necessary gearing or by
other suitable mechanical means for instance an ordinary switch frame may be utilised
and by rotating the switch handle the lights may be highered and lowered. If required:
to control lights from one coil in different parts of a building I do this by seperate
wires leading from the coil to the point where the regulation is to be made.
Dated this 24th day of September 1896.
WALTER EMMOTT.
I, WALTER EMMOTT, of No. 1 South Parade, Halifax, in the County of York,
Electrical Engineer, 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 improvements in the method of and means employed for
regulating the amount of electricity passing through a circuit and is specially adapted
for use in connection with incandescent lamps as by its use the light of such lamps
can be highered or lowered by turning or moving the switch handle which controls the
lights in a manner similar to ordinary gas lights. The invention consists of the
combination with any ordinary switch frame of an impedence coil, or a coil with a,
movable core, or a coil divided into separate circuits so arranged that the current can
readily be switched onto the lamps direct, or so as to be more or less impeded.
Such being the nature and object of my said invention, the following is a complete
description of same, reference being had to the accompanying diagrams, which
illustrate the manner of carrying into practice the said invention.
In order to regulate and control an alternating current (see Fig. 1) I employ an
ordinary switch board and lever 1 and an impedence coil 2 with fixed core, the core
having a wire of size equal to carry the current and having a sufficient number of
turns to cause the necessary impedence. The coil 2 is divided, preferably, at the ends
into two, three, or more circuits 3, 4, and 5 connected with the switch board 1. There
are a series of contacts 6. 6 in connection with the switch lever, and each contact 6
has its own connection with the lamps. A wire 7 from say the main is connected
to the switch lever 1, and the first contact on the left hand side is by wire 8 connected
with the impedence coil 2, and when the contact is made with this contact the current
passes through the three circuits 3, 4, and 5 of the coil 2 and so to the lamps 9, and

page_text: the light from the latter would be at the lowest. If the switch lever 1 be moved to
the next contact, the current will pass by wire 10 only through circuits 4 and 5 of the
coil 2, and the lamps will not be quite so low if by way of the next contact, then
the current passes by wire 11 through one circuit 5 only, and the lamps are still
higher. If the contact is made by the last contact, the current passes by wire 12
direct to the lamps which are thus full "on." By dividing the coil as described and
employing a series of contacts, I am enabled to control and regulate any number
of lights in the case of an electric light circuit, or to regulate the speed of a
motor in a motor circuit.
Where it is only required to have the lights full "on." or "off," or say half on,
then the circuit may be arranged as shewn by Fig. 2 where 1 is the switch and lever
and 6. 6 the contacts. When contact is made through the lower contact, the current
passes by wire 12 direct to the lamps 9. If the contact is, made through the upper:
contact the current passes by wire 8 through the coil 2 and to the lamps 9, and the
latter are say half "on" according to the dimension of the impedence coil 2 which.
may be of any pre-determined capacity.
If it is desired to regulate the current in a circuit so that the lights can be raised
or lowered to any degree without dividing the impedence coil into circuits (see Fig. 3)-
I employ a switch board 1, and to the switch lever I fix a core 24 free to be moved
partly in or out of the impedence coil. Two contacts 6-6 are employed, and if the
contact is made through the lower one, then the current passes by wire 12 direct to
lamps 9. If the contact is made through the upper contact 6, then the current passes
by wire 8 through the inpedence coil 2 and the amount of impedence is regulated by
the relative position of the coil 2 and core 2 to one another, and which is adjusted
by the switch lever 1 being moved to different positions on the contacts 6.
will be obvious that the core 2 may be stationary and the coil 2 movable.
It
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1.) The combination of a switch together with an impedence coil divided into
circuits and connected with the switch and the lamps in the manner and for the
purpose herein described and substantially as illustrated by Fig. 1 of the accompanying
drawings.
(2.) The combination of a switch together with an impedence coil connected with
the switch and the lamps in the manner and for the purpose herein described and
substantially as illustrated by Fig. 2 of the annexed drawings.
(3.) The combination of a switch together with an impedence coil so arranged that
the relative positions of the core and coil can be adjusted and regulated and
connected with the switch and the lamps in the manner and for the purpose
herein described and substantially as illustrated by Fig. 3 of the accompanying
drawings.
Dated this 14th Ja
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