Year: 1899

page_text: Date of Application, 15th June, 1899
Complete Specification Left, 13th Mar., 1900-Accepted, 15th June, 1900
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
My invention relates to automatic magnetic circuit breakers in combination
with controlling or regulating means used in connection with translating means,
and the invention comprises means whereby the current necessary to cause the
operation of the circuit breaker is varied by the manipulation of the controller or
regulator.
For instance in the use of automatic magnetic circuit breakers in combination
with a resistance controlling switch and a motor, the temporary abnormal flow
occurring upon turning the current into the motor, would actuate the circuit
breaker unless it were set to carry a greater current than would normally be
desirable. It is desirable therefore to provide for this temporary abnormal flow
present upon turning the current into the motor, that is to provide, during the
cutting out of the resistance or a certain part thereof, that the circuit breaker shall
withstand a greater amount of current without being actuated, than it will after
said resistance is cut out.
But I would not have it understood that my invention is to be confined to its
use with resistance controlling arms only, as it is obviously equally applicable to
the familiar controller of the Series Parallel type, nor do I wish to be confined
in my invention to controllers for motors as it may be applied to any kind of
translating device. For instance it may be applied to modify the action of a
circuit breaker used in connection with a rheostat for storage battery charging
The object being to provide means whereby the amount of current necessary to
cause the operation of the circuit breaker will depend upon the position of the
controller or regulator.
This object is obtained by providing the circuit breaker with a plurality of coils
or a coil in sections. The relation of each coil or each section of coil to the current,
and the consequent magnetic effect of the same depending upon the position of
the controller switch.
For instance I may have two coils which we shall for convenience designate main
and differential. The main coil adapted to actuate the movable core to actuate
the restraining means of a spring actuated switch. The differential coil when in
circuit adapted to partially counteract the action of the main coil, said differential
coil being so connected that it will be cut out of circuit upon the controller being
brought to the final position.

page_text: Or again the coil may be in two sections, one of which contributing by its
presence in the circuit to the sensitiveness of the circuit breaker, and adapted to
be thrown out of circuit in the starting positions of the controller.
Th
14...
J
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.
Improvements in and relating to Automatic Magnetic Circuit-
breakers.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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 automatic magnetic circuit breakers in combination
with resistance controlling means, and the object of my invention is to provide in
combination with a translating device and means for controlling the same, and an
automatic magnetic circuit breaker connected therewith and means controlled by
the controlling means for altering the point of actuation of the circuit breaker.
In the use of an automatic magnetic circuit breaker in combination with a
resistance controlling switch, the temporary abnormal flow occurring upon turning
the current into the translating device would actuate the circuit breaker unless it
were set at a higher point than would normally be desirable for the protection of
the translating device. It is desirable therefore to provide for this temporary
abnormal flow, that is, to provide during the cutting out of resistance or a certain
part thereof, that the circuit breaker shall withstand a greater amount of flow
without being actuated than it will after said resistance is cut out.
I accomplish this purpose by the means illustrated in the accompanying draw-
ings, of which Fig. 1 is a front view of my device. Fig. 2 is a diagramatic view
showing the paths of the current. Fig. 3 is a diagramatic view showing means
for short circuiting part from the actuating coil and Fig. 4 is a diagramatic view
showing means for shunting the actuating coil. Similar numerals refer to similar
parts throughout the several views.
Referring to the drawings 5 indicates the resistance controlling switch in series
with which is the actuating coil of the circuit breaker which in Figs. 1 and 2 is
indicated by 6. G represents the generator and M the motor or translating device.
The circuit breaker is an automatic magnetic circuit breaker of the well-known
I-T-E type, having a spring actuated switch normally restrained by a latch
adapted to be actuated by a core movable in the solenoid coil 6. In opposition to
coil 6 is a second coil 7 connected between the line and the last resistance con-
tact 9, or it may be between certain points of the resistance so that while the
current passes through the resistance it passes through both coils and thus the
effect of coil 6 is partially counteracted by the opposition of coil 7, and the device
will thereby require a greater current for its actuation than it would were coil 6
unopposed, when, however, the resistance controlling switch passes the resistance
contact 9 and reaches the contact 10 the coil 7 is cut out of the armature circuit.
In Fig. 3 is shown a modification of the device above described, in which a single
actuating coil is used, the contact strip 11 being so disposed that the resistance
controlling arm 5 will contact with it. This contact strip 11 is connected with
coil 6 intermediate its extremities, so that when the resistance controlling switch 5

page_text: is in engagement with the strip 11 a portion of the coil will be short circuited.
In Fig. 4 the contact strip 11 is connected between the coil 6 and the line, serving
as a shunt to said coil during the engagement therewith of the resistance con-
trolling switch 5.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is performed, as communicated to me by
my foreign correspondent, I declare that what I claim is:--
1. In combination with an electro-magnetic circuit breaker and a resistance
controlling switch, means for short circuiting a portion of the actuating coil during
a prescribed movement of the resistance controlling switch, substantially as
described.
2. In combination with an electro-magnetic circuit breaker and a resistance
controlling switch, a shunt to the actuating coil of the circuit breaker adapted to
be brought into or out of circuit by the movement of the resistance controlling
switch, substantially as described.
3. In combination with a resistance controlling switch an automatic magnetic
circuit breaker, magnetic means controlled by the resistance controlling switch for
opposing the automatic magnetic actuation of the circuit breaker, substantially as
described.
4. In combination with a resistance controlling switch and an automatic
magnetic circuit breaker a coil so disposed as to oppose the magnetism of the
actuating coil of the circuit breaker, substantially as described.
5. In combination with a resistance controlling switch and an automatic magnetic
circuit breaker, a coil in series with the resistance and so disposed with respect to the
actuating coil of the automatic magnetic circuit breaker as to oppose the magnetism
of the latter until the resistance is cut out, substantially as described.
Dated this 13th day of March 1900
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.