An Automatio Speed Regulator for Electromotors.
Year: 1895

page_text: Date of Application, 5th Oct., 1895
Complete Specification Left, 2nd July, 1896-Accepted, 12th Sept., 1896
PROVISIONAL SPECIFICATION.
An Automatio Speed Regulator for Electromotors.
I, LOUIS DENAYROUZE, of 70 Boulovard Victor-Hugo, Neuilly, (Seine) Franco,
Engineer, do hereby declare the nature of this invention to be as follows -
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This invention relates to apparatus applied to an electromotor whereby the speed
is automatically regulated. For this purpose I fix the arinaturo insulated on its
shaft on which there is a ring having bearing on it a spring brush which is
connected to one of the commutator brashes of the motor which is not in
connection with the battery or generator. On another part of the shaft is fixed
insulated another ring having beating on it a brush connected to the terminal of
the generator which is not connected to the commutator brush and having
mounted eccentrically on it a roller preferably of silver. On the shaft are fixed
two bent springs carrying at their ends weights one of which bears against the
silver roller. The shaft carries a fan or a pulley to convey rotation to any
machine When the shaft is revolving at normal speed, the curront passes from
one terminal of the generator to one comentator brush, through the armature to
the other commutator brush, then by the spring brush and ring to the shaft,
through the weight to the silver roller and insulated ring and its brush to the
other terminal of the generator.
Should the speed be too great, the weight is caused by centrifugal force to
leave contact with the silver roller and thus the circuit of the motor is opened
until the speed again becomes normal.
According to a modification, the fan or pulley is on a sleeve free to turn on
the shaft from which it is driven through a spiral spring. On an arm projecting
from the sleeve is mounted the roller, which at normal speed makes contact with
an arm projecting from the insulated ring, but when the speed of the armature is too
great the spiral spring is strained the alcove with the fan or pulloy lagging
belund and the contact of tho roller is broken, the circuit of the motor boing
thus opened until the speed of the armature is sufficiently reduced.
Dated this 5th day of October 1895.
ABEL & IMRAY,
Agents for the Applic int.
An Automatio Speed Regulator for Electromotors.
1, LOUIS DENAYROUZE, of 70 Boulevard Victor-Hugo, Neuilly (Seine) France,
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 apparatus applied to an electro motor whereby
the speed is automatically regulated, as 1 shall describe referring to the
accompanying drawings.
Fig. 1 is a side view, Fig. 2 an end view and Fig. 3 a plan of an electro

page_text: motor with speed regulator according to this invention, Fig. 4 is a transverse
section on the line 4 of Fig. 1
A is the spindle on which are fixed the armature B and commutator Cinsulated
from the spindle by a sleeve 1 of insulating material On the spindle in electrical
communication with it is fixed by a nut, a copper ring E, and on the sleeve D is
fixed another ring F on which bears a small brush b This ring is in electrical
communication with a crank arm G carrying a freely moving silver roller g. On
the spindle is adjustably fixed a governor consisting of a boss J from which
project two spring blades H having at their ends weights I. On the spindle A. 13
fixed a fan K or it might be a pulley to give movement to any machine. The
aranture B revolves between magnets (not shown) in the usual way, when a
current from one terminal of the battery passes as indicated by the arrows to one
of the commutator brushes, thence through the armaturo coils to the other commutator
brush and by a small brush, connected to the latter, to the ring E thence by the
spindle A to the governor boss J one of the weights I, the roller g, the arin G,
ring F and its bush 6 back to the other terminal of the battery.
When the speed of rotation is beyond the normal, a silver stud on the weight I,
in virtue of centrifugal force, loves the roller g breaking contact until the speed
becomes sufficiently reduced. The normal speed is determined by setting the aim Gor
boss J so as to give more or less pressure of A on g.
Figs 5 and 6 shew in side view and end view a modified construction. In this case
a sleeve M free to turn on the spindle and operating as a driver of the fun o
pulley K is held between a collar of the spindle and a washer d socured by a pin. Of
two arms I projecting from the sleeve M, the one arm carries a platinum or silver
roller h, the other arm holds at one end of a spiral spring R the other end of which
is fixed to the spindle A.
While there is contact of
and G the current causes the armature to revolve,
driving the fun K or pulloy through the spring R.
When the speed exceeds the normal contact of to G is broken cutting off
current until the speed becomes sufficiently reduced.
The speed regulator above described renders rheostats or other regulators of current
unnecessary.
Having now particularly described and ascertained the nature of this inven
tion and in
what manner the same is to be performed, I declare that what
I claim is
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1. Au automatic speed regulator for electromotors wherein part of the electric
circuit consists of a contact made by part of a centrifugal governor, which
contact is broken when the speed exceeds the normal, substantially as described.
2. A modified construction of the regulator wherein the contact is made by the
arm of a sleeve driven through a spiral spring, substantially as described.
Dated this 2nd day of July 1896.
ABEL & IMRAY,
Agents for the Applicant.