Automatic Regulator for Dynamo Electric Machines. Supplying Electric Motors.
Year: 1895

page_text: Date of Application, 17th Aug., 1895-Accepted, 28th Sept., 1895
COLIN DIUINICATION.
Automatic Regulator for Dynamo Electric Machines. Supplying
Electric Motors.
I, ALEKSANDER DONEY, a citizen of Russia, residing at No. 2 Rue Sinolvia
Warsaw, Russia, Mechanician 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 apparatus whereby the output of a dynamo electric
machine supplying a motor is automatically regulated according to the work done
by the motor.
Figure 1 of the accompanying drawings is a side view and Fig. 2 is a plan of
apparatus according to my invention.
On a suitable base a I fix two solenoids and c, the one b wound with fine wire
forming part of the field magnet circuit of a dynamo, the other c wound with
coarse wire forming part of the circuit connecting the dynamo with the motor
which it supplies.
The iron cores of the two solenoids are fixed to crossheads de connected respec-
tively by side links d'e' to the forked ends of a lever f which is pivotted on a
standard k. An adjustable spring g is connected to the base and to the lever ƒ so
as to urge it to the position shewn in Fig. 1, and a dash pot h is applied to the
lever so as to prevent sudden oscillations. To the lever is connected by a rod i the
throttle or other regulating valve of the engine which works the dynamo, this valve
being closed when the lever is in the position shewn in Fig. 1.
When it is desired to start the dynamo and motor the leverf is moved in opposi-
tion to the spring g raising the rod i and so opening the engine valve thus starting
the dynamo and motor. According as the motor does more or less work, the
solenoid c is more or less energised, attracting downwards its core e with more or
less force, thus raising more or less the rod i so as to open more or less the regu-
lating valve of the engine which works the dynamo. When the motor is cut out
of circuit so as to do no work, the lever takes the position shewn in Figure 1,
stopping the dynamo.
The rod i instead of being connected to the regulating valve of an engine, might
obviously be connected to any known appliance whereby the output of the dynamo
may be varied. It might, for instance, be connected to a switch for cutting out or
introducing resistances, or for varying the number of active field coils of the
dynamo.
The apparatus described may be applied to a dynamo supplying several motors.
Having now particularly described and ascertained the nature of
my said
invention and in what manner the same is to be performed I declare that what I
claim is:-
An automatic regulator for dynamo electric machines supplying electric motors,
comprising a pair of solenoids having their cores linked to the opposite ends of a
lever, the one solenoid having its coil in the circuit of the field magnets of the
dynamo, the other solenoid having its coil in the circuit connecting the dynamo to
the motor, a rod connecting the lever to a valve or other appliance for varying the
Dost

page_text: output of the dynamo, and a spring adapted to move the said rod in the direction
to cause lessening of the output arranged and operating substantially as described.
Dated this 17th day of August 1895.
ABEL & IMRAY,
Agents for the Applicant.