Improvements in Magnetic Power Transmitting Devices.
Year: 1899

page_text: Date of Application, 29th Mar., 1899-Accepted, 29th Mar,, 1900
COMPLETE SPECIFICATION.
Improvements in Magnetic Power Transmitting Devices.
I, DANIEL BACON, of 106, Fulton Street, in the City, County and State of
New York, United States of America, Gentleman, do hereby declare the nature
of this invention and in what manner the same is to be performed to be parti-
cularly described and ascertained in and by the following statement:-
The object of my invention is to provide a device whereby motion derived from
any convenient source of power, such as steam, water, electricity, air or gas, may
be transmitted to the mechanism intended to be operated thereby.
To this end, my invention consists in a magnetic actuator adapted to be
interposed between the source of power and the mechanism to be driven thereby
and comprising magnets adapted to revolve in opposite directions and transmit
to the apparatus to be actuated thereby, power applied thereto, and an armature
placed in the magnetic field of said magnets and adapted to revolve therewith in
opposite directions as determined by the magnet or magnets energized at the
time, and a rotating transmitting device mounted on said shaft
One embodiment of my invention is shown in the accompanying drawings,
in which:
Figure 1 is a top plan.
Figure 2 is a side view partly in section with the receiving pulley removed.
Figure 3 is a section on line 3-3 of Figure 1.
Figure 4 is a section on line 4-4 of Figure 2.
Same letters indicate similar parts in the different figures.
A is the framework of the device upon which the moving parts are mounted.
B is what I ferm the receiving pulley, being the pulley by means of which the
power is received from the source of power, not shown. This pulley is mounted
upon the shaft a journalled in the framework A.
C indicates what may be called the transmitting pulley and is mounted
upon the shaft al journalled in the framework A. In the drawing, this trans-
mitting pulley is represented as a fly-wheel, because I do not desire to limit
myself to any specific mechanical device for transmitting power received by the
actuator from the receiving pulley B. It may be desirable to have the trans-
mitting pulley C a simple pulley or an eccentric or any other of a large variety
of forms, according to the specific work which the mechanism, to which the
power is transmitted, has to do.
It will, therefore, he understood that it is immaterial to the operation of my
magnetic actuator whether the one or the other of the usual mechanical devices,
by means of which motion is received or imparted, is employed at what may
be called the entrance and exit of my device. The function of my device is to
receive the power, however delivered, and to transmit it in the manner required
by the work intended to be performed.
The shaft a carries two gear wheels D-D'. One of these, D¹, meshes directly
with the gear 12 on the shaft a¹. while the other gear wheel, D, engages with
the gear 3 also on the shaft a through the intermediate gear D upon the
shaft a journalled in the framework. It is, therefore, evident that when
motion is communicated to the shaft a from the shaft a through the
Dia 17

page_text: gears D-D-D³, both shafts will revolve in the same direction. When, how-
ever, the motion is communicated through the gears D-D, the shafts will
revolve. in opposite directions.
The choice of one or the other set of gears as the efficient set to rotate the
shaft a' is determined as follows:
The gears and I are loose upon the shaft and to each is rigidly secured
a set of electro-magnets E-EE &c. arranged radially about the shaft and
carried on the plates F-FI made rigid with the wheel 13 or 12 respectively.
Within the magnetic field of both sets of magnets and conveniently or prefer-
ably between the two sets is the armature G keyed to the shaft a', as shown in
Figure 4...
Each set of magnets is so wound as to present alternately poles of opposite
polarity to the armature G. The collars H-H' are mounted on the gears D-D2
respectively and turn with them loosely about the shaft. These collars carry
the collecting rings b, c and b and c respectively, which collecting rings are
connected with the magnets EE etc., which may be wound in series or multiple,
as desired. The current is brought to the collecting rings by suitable brushes
from an outside source of electrical power.
It is obvious that whenever the armature G is caused to revolve, it carries
with it the shaft and that the direction of such revolution will depend upon
whether said armature revolves in unison with the disc F" and its
set
of magnets or with the disc F and its set of magnets. The
armature G. being made of soft iron or other magnetizable material,
is attracted by whichever set of magnets is electrically excited. This is
brought about by the collars H-H loose on the shaft a', which are electrically
connected with a battery or other source of electrical energy. I have found
that a very slight electric current is sufficient to energize either set of magnets
Sufficiently to secure such a hold upon the armature as will enable the power
received through the receiving pulley B to be transmitted unimpaired to the
shaft and hence, to the mechanism to be driven.
The many advantages of my magnetic actuator will be readily apparent with-
out further explanation.
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:-
1. A magnetic actuator which consists of magnets adapted to revolve in opposite
directions and transmit to the apparatus to be actuated thereby, power applied
thereto, and an armature placed in the magnetic field of said magnets and
adapted to revolve in the direction determined by the magnet or magnets
energized at the time.
2. A magnetic actuator which consists of magnets adapted to revolve in opposite
directions and transmit to the apparatus to be actuated thereby, power applied
thereto, and an armature placed in the magnetic field of said magnets and
so connected to the apparatus to be actuated as to revolve it in the direction
determined by the magnet or magnets energized at the time.
Dated this 24th day of February 1899.
HASELTINE, LAKE & Co., .
45, Southampton Buildings, London,. W.C.,
Agents for the Applicant.