Year: 1886

page_text: I ALBERT LYMAN PARCELLE of Boston, County of Suffolk, Commonwealth of
Massachusetts United States of America Inventor 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:-
'
The primary object of my invention is to provide a motor adapted especially for
use in connection with electrical synchronous movements, printing telegraphs, or
other apparatus where uniform rates of speed are desirable and my improved
instrument may be used either directly as a motor to actuate such apparatus step
by step or as a circuit interrupter to control other devices for driving the apparatus.
With this object in view I preferably employ a resilient vibrator, and preferably,
one capable of a greater amplitude of motion, and having a normally lower rate of
vibration than the ordinary electrically actuated vibrators, either harmonic or non
harmonic so well known in the art. This vibrator may consist of a spring tongue,
reed or bar, or of a pivoted non resilient bar, provided with supplementary opposing
springs, and may be of any suitable or desirable material. The armature upon
which the motor magnets act is located upon the end of the vibrator, and lies in a
plane transverse to its longitudinal axis. The motor or vibrator magnets are
arranged opposite the armature with the faces of their poles in a plane parallel or
substantially parallel therewith, so that the armature vibrates across the faces of
the magnets. The local circuits through the motor magnets are opened and closed
by the vibrator in its movement, as is well understood. The power of the motor
magnets is therefore all applied to the vibrator at the same distance from the
center of vibration-that is, always at the extreme end of the vibrator-and the
vibrations are regular, equal, and uniform.
•
I am aware that heretofore it has been proposed to actuate a harmonic vibrator
by horseshoe magnets, one magnet being arranged on each side of the vibrator
with its faces in a plane parallel with the vibrator, and I do not therefore claim
such an arrangement broadly. So far, however, as the arrangement of the motor
magnets is concerned, the invention is not limited in its broadest sense to a
resilient vibrator; and so far as the switch devices and contacts for causing the

page_text: particular character of vibrator or to any particular arrangement of the motor-
magnets.
In the accompanying drawings-
Figure 1 is a plan view of my improved instrument.
Figure 2 is a side elevation partly in section.
Figure 3 a transverse section.
Figure 4 a detail view showing one form of device by which the vibration of
the armature is utilized to actuate devices.
Figure 5 is a detail view illustrating the construction of the block in which the
heel of the vibrator is mounted.
Figure 6 is a detail view illustrating the stops for limiting motion of the
vibrator.
137. 1.
Figure 7 is a detail view showing the relation of the armature on the end of the
vibrator to the motor magnets.
Figure 8 is a detail view partly in section, illustrating the switch devices by
which the circuits of the motor magnets are made and broken by the vibrator in
its movement.
Figures 9 and 10 are detail views illustrating one application of the motor, viz. :
for the purpose of driving a trailing arm or circuit completer over a table of
contacts.
•
Figure 11 is a detail view, showing a modified arrangement for stopping and
starting the motor from a distant station.
A vibrator A of suitable length, width and thickness—say about the proportions
illustrated in the drawings-is mounted in a block or post B secured upon the bed-
plate. This block is preferably metallic, and is preferably split and socketed for
the reception of the vibrator, and is provided with a clamp screw b for securely
holding the vibrator. I prefer to employ a metallic block or one in which the
clamping jaws which hold the vibrator are faced with metal, so as to afford a firm
support to the vibrator. The supporting block is illustrated in detail in Fig. 5.
In Figure 1 the vibrator A is shown as clamped in the block B, and it will be
seen that the bent end of the vibrator slides on a bolt B secured in the block B,
which bolt is provided with reverse adjusting screws. By loosening the bolt b,
therefore, the vibrator may be adjusted endwise in the block so as to vary its
normal rate of vibration, as is well understood. Any other suitable manner of
supporting the vibrator or adjusting it; where adjustment is desired, may of course
be employed.
.
As before remarked, the vibrator A may be of any suitable resilient material,
and the soft iron armature a secured upon its end, or it may be formed of one piece
of steel or suitable iron-such as cold rolled iron. The armature a is preferably
rectangular, as clearly illustrated in Fig. 7.
ツ
The motor magnets C C and D D are arranged opposite the face of the armature
in a plane substantially parallel therewith. The magnet D is placed on one side of
the center of vibration, and the magnet C on the other, with the two poles of each
magnet in the same vertical line. I have shown horseshoe magnets D D arranged
with both poles to act upon the armature of the vibrator; but obviously a single
imagnetic pole on each side of the center of vibration may be employed.
1.
"
Platinum contact plates c d are placed on the opposite sides of the vibrator at
some suitable point in its length to make contact with spring fingers c and d for
completing the local circuits of the motor magnets CD, as is presently described.
-
A switch or circuit-changer E placed at any suitable point in the length of the
vibrator is also employed to control the circuits of the motor magnets, and is
preferably constructed in the following manner, though of course any other
practical construction will answer the purpose.
A sliding block E¹, Fig. 8, is mounted upon a bracket or support E' secured upon
the bed-plate, the sliding block being guided and ‘limited in its movement by two
screws e which pass through slots in the block, and are secured to the bracket E

page_text: Two uprights or posts E3 on the sliding block are provided with adjusting screws el
between which the vibrator A is located. As the vibrator moves, therefore, the
sliding block E¹ is shifted first to one side and then to the other, and the exact
moment of its movement may be regulated by the adjusting screws c¹.
The sliding block carries two, contact fingers f, g, which make and break contact
with contact-posts , i, as the vibrator in moving back and forth shifts the switch-
block E¹. One pole of the motor battery M B is connected with the heel of the
vibrator. From thence the circuit is continued either through the body of the
vibrator, or through a suitable conducting strip thereon when the vibrator is made
of non-conducting material, to the platinum contacts c, d, thence by either the
spring c¹ or d¹ through the coils of either magnets C or D, and thence to either of the
contact fingers for g, and its contact-post h or i to the opposite pole of the battery.
The circuit wires are indicated by dotted lines, and the connections are sufficiently
clear without detailed description.
The contact fingers c¹, d¹, are shown in this instance as mounted upon pivoted
arms U, V, carried on posts U, V, for a purpose hereinafter described, and the
circuits are completed through the contact fingers c² or d¹, pivoted arm U or V to
the coil of the magnet C or D. The parts are all .shown at rest on the center of
motion. In starting the motor into operation an impulse of vibration may be
imparted to it by the hand of the operator.
Assuming that the vibrator is moved to the right towards and across the poles
of the 'magnet D, the contact d will make contact with the, finger d before the
contact finger g of the switch devices has left the conducting face of. the.post i.
The circuit, therefore, will, be briefly completed from the motor battery M B
through the vibrator contact d, the finger d, pivoted arm. V, coils of magnet D,
thence by wire d³ to finger g, contact post i and opposite pole of the battery, and
the armature a will be attracted. The continued movement of the vibrator in
that direction opens the circuit just described by the shifting of the block E¹ so as
to move the finger g.out of contact with the conducting face of the post i and make
contact between f and h. The vibrator being released from magnetic attraction
on that side of its center of vibration, will, by its resilience, spring back and;
passing the center of vibration, will make contact between the contact-plate c, and
finger c¹, and finger f and conducting face of post h, thus completing the motor
circuit through the coils of the magnet C, and the armature will be attracted
toward and across the face of its poles. This circuit runs from the battery through
the vibrator, contact c, finger c¹ pivoted arm U, coils of magnet C, line c² to finger f;
and contact-post h to the opposite pole of the battery, and the circuit remains
unbroken until the finger has been moved out of contact with the post h by the
shifting of the sliding-block, E'. This operation continues, the armature being
attracted first towards and across the poles of one magnet, and then towards those
of the other. Shunts and resistances may be employed as usual in this class of
apparatus to prevent sparking at the contacts if desired.
When the switch E is in the central position, as shown in Fig. 1, then one
finger g is just on the inner edge of the conducting face of its post i, and the
finger fis just off the inner edge of the conducting face of its post h. The move-
ment of the vibrator downward or to the right, as viewed in the figure, will
therefore for a time complete the circuit of magnet D, as described, until the,
switch E reaches the end of its movement and carries the finger g off the conducting.
face of post i. The vibrator now moves in the opposite direction by its own
resilience, the switch remaining stationary until the vibrator comes against the
upper or left hand screw c¹. The switch is, then moved until the finger ƒ comes on
the conducting face of its post h and the vibrator having some time before left the
contact and made contact with c the circuit of magnet C will be completed.
It will be perceived that the attracting power of the motor magnets is always
applied at the same point, viz: the extreme end of the vibrator, thus insuring a
more even and regular vibration than where the two poles of the vibrator magnets,
are placed so as to act on the sides of the vibrator, as in that case there are two

page_text: points in the length of the vibrator at which the motive power is applied: Under
my organization the whole force of the battery is made available, the attraction of
the motor-magnets is applied at the most effective point of the vibration, and no
current is used during the middle portion of the swing or vibration, the resilience
of the vibrator serving to carry it past the dead point. An increased current in
the motor circuit will give a greater amplitude of motion to the vibrator, because
the more intense the magnetic attraction is the more energy will be imparted
to the vibrator, and it will move a greater distance across the poles of the motor
magnets from the center of vibration..
Where some means of adjusting the vibrator in its support to vary its normal
rate is. used, as described, the frame carrying the motor-magnets may also be
provided with some means of adjustment to compensate for the movement of the
vibrator, and maintain the poles of the magnet and the armature in the same
relation.
The pivoted arms U and V are connected by a cross-arm v pivoted to the arms U
and V on opposite sides of their pivots, and at equal distances therefrom. The
result of this construction is that the movement of either of the arms so as to move
its contact finger toward or from the contact on the vibrator, produces a corre-
sponding and equal motion of the other arm for the same purpose.
The end of the arm V which projects beyond its post V1 carries a spring tongue T,
which lies between two adjusting screws, t, t, carried in a suitable bracket secured
to the bed-plate. By the adjustment of these screws, therefore, the spring T may
be moved so as to adjust the contact-finger c, d, toward or from their contacts on
the vibrator. The arrangement of pivoted arms U, V, however, has another
purpose, which is described hereinafter. -
The instrument which I have now described may be used as a circuit interrupter
for what is known as the phonic wheel of Paul La Cour, or for the purpose of
interrupting any other circuit for driving telegraphic or other apparatus. Aside
from this use, however, the motion of the vibrator itself may be directly utilized
as a motive power. One form of an organization for this purpose is illustrated in
the drawing. See more especially Figs. 2, 3, & 4. The vibrator A is here shown
as rocking an anchor lever J back and forth in its vibration. This lever is shown
as pivoted in a horizontal 'arm J¹ of a standard J2 mounted on the bed-plate. The
lower end of the anchor lever on which the vibrator acts is notched and provided
with elongated inclined lateral extensions jj which serve as guides or guards to
prevent the vibrator from swinging free of the anchor lever, and thus insure its
actuation alternately, in opposite directions as the vibrator vibrates, but such
extensions are not necessary.
Pitmen, or push-and-pull arms, K, pivoted on the anchor lever carry pawls or
teeth which work in the teeth of a ratchet wheel L.having its bearing in the
standard J. The rocking of the anchor lever J by the vibrator, therefore, causes
an intermittent or step-by-step rotation of the ratchet-wheel L. The pitmen K
are connected by coil spring k, which tends normally to draw them together, and
hold their pawls in contact with the teeth of the ratchet-wheel. The upper end 71
of the anchor lever is wedge-shape and works against a yielding device M, which
is provided with two depressions or notches m which hold the wedge-shaped end
of the anchor lever at the limit of its movement on each side until positively
actuated in the opposite direction by the swinging of the vibrator. I may also use
in connection with the anchor lever adjustable stops N, carried in a block N¹
mounted on the bed-plate, to limit the motion of the vibrator, so as to always
prevent its swinging beyond the lateral extensions ; of the anchor lever, and obviate
the possible accident of the vibrator on its return motion striking against the edge
of the lateral extension ; instead of passing under it.
The adjustable stops,
however, which are illustrated in Figs. 1 and 6 are only probably desirable or
useful when the inclined extensions ; are not used on the anchor lever, because the
extensions can always be made of sufficient length to render it impossible for the
'

page_text: vibrator to pass beyond them. They are not necessary, however, in either case,
and I may or may not employ them.
In practice I would prefer to place the stops as well as the contacts c,
d nearer
the heel of the vibrator, and I here remark that the different parts may be located
at any point in the length of the vibrator found most suitable for the purpose.
As to the speed of vibration, I have found that an instrument constructed to
vibrate at about thirty per second operates most satisfactorily. With fifteen teeth
in the wheel L this would give a speed of rotation of about four times per second,
because the pitmen both push and pull. A slower rate for the vibrator, a larger
wheel with more teeth, or an actuation of the wheel by one pitman only, may be
adopted when a slower speed of rotation is desired. Of course any suitable rate of
vibration of the vibrator, and any suitable means for actuating the driven apparatus
by it, may be adopted.
I have shown in the drawings a circular table O, on which a circular series of
insulated contacts o are placed. This table is supported on the standard Ja
concentrically with the axis of the ratchet-wheel L, the axle of which passes
through it, and carries on its outer end a radial arm O¹, provided with a trailing
brush or finger which sweeps over the contacts. Such an arrangement may be
adopted in synchronous or printing telegraphs for the distribution or subdivision of
an electric circuit according to any of the well known systems. It is shown and
described here as one application of my instrument as a motor power.
Under some circumstances it would be desirable to have the motor under control
at a distant station. I have therefore provided an arrangement by which motors
may be stopped and started from a distance. In Figure 1, for instance, the
arms UV are; magnetic and carry polarized armature pieces PP on their outer
sides, the arinature of the arm. U being placed on the opposite end from the
contact finger c', while the armature of the arm V is placed on the same end with
the contact finger d'. Opposite these armatures electro-magnets QR are placed and
connected with a line from a distant station X. At this station a key and split
battery are located. The magnets QR are so wound that a current of one polarity
would cause the magnet Q to attract its armature, and the magnet R to repel its
armature, so that both magnets would act conjointly, and equally because connected
by the link v, to move both contact fingers c d against the contact-plates c d on
the vibrator. When the fingers c¹ d¹ are so put in contact with the plates on the
vibrator, the motor circuit through either the coils of the magnet C or of the
magnet D will be completed. Which of the two magnets will be energized depends
upon the contacts at the switch E. If the finger fis in contact with the post h,
the magnet. C will be energized, and if the finger g is in contact with the post i,
the magnet D will be energized. There will always be a completion of the circuit
through either the contact for g, and as contact is completed at both c¹ and d', the
motor will always be started when an impulse of electricity of a polarity to produce
the movements of the fingers c¹ d¹ is transmitted. When it is desired to stop the
motor a current of opposite polarity is transmitted from the distant station, and this
current, acting in a reverse manner on the armatures P P from that described;
draws the contact fingers c¹ d'apart, so that the vibrator cannot make proper
contact with them, and the motor will therefore come to a rest.
With the switch in the position shown, in starting the motor as above described
the circuit of magnet D would be completed.. If from any cause the switch were
moved so that f and h would be in contact then the circuit of magnet C would be
completed. Should the construction be such that the fingers f, g, are both in
contact with their posts when the switch is in the central position, then the circuit
of both magnets would be completed. In that event the difference of current in
the two circuits or the difference which would ordinarily exist between the two
magnets CD would cause a jerk of the armature sufficient to impart the necessary
initial vibration.
In figure 11 I have shown a somewhat modified construction for accomplishing
the same purpose. There, instead of having an armature on each of the pivoted

page_text: arms, both armatures are placed upon the arm U, and a horseshoe magnet QR
placed so that a current of one polarity will attract one armature and repel the
other, and a current of reverse polarity will reverse the conditions of retraction
and repulsión. The operation is precisely the same in principle and will be well
understood.
Instead of employing polarized armatures in the manner just described, it is of
course obvious that a polarized relay may be used at the motor to open and close
the local circuit or circuits to give the required movement to the contact fingers.
It is also obvious that either of these arrangements could be employed to start and
stop the motor locally.
1
I have shown and described my improved motor as organized in what I deem to
be an efficient practical and desirable inanner, but of course there are many details
that might be changed or modified without departing from the broader features of
the invention.
I have said, at the beginning of this specification that my motor, is primarily
intended for use in connection with electrical synchronous movements, printing
telegraphs &c. It has however a much wider application, and may be used as an
ordinary motor for driving machinery, for, obviously by enlarging the parts, and
increasing the electro magnetic power of the motor magnets, the motor may be
driven with an energy sufficiently great to be measured by horse power.
1
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. The combination of an electrically-actuated vibrator, the vibrator-magnets
having their poles arranged opposite the end of said vibrator outside the curve of
vibration and in a plane transverse to its longitudinal axis, a source of electric
energy, electric circuits and connections.
2. The combination of an electrically-actuated vibrator, an armature on the end
thereof lying in a plane substantially at right angles to the longitudinal axis of the
vibrator, vibrator magnets having their poles arranged opposite said armature
outside the curve of vibration and in a plane substantially parallel therewith, a
source of electric energy, electric circuits and connections.
-
3. The combination of an electrically-actuated vibrator, vibrator magnets, a
source of electric energy and circuits, circuit completing devices by which the
circuits of the motor-magnets are alternately completed as the vibrator vibrates,
and additional circuit-completing or switch devices actuated by the vibrator to
alternately close the circuit of one motor-magnet and open that of the other, as
set forth.
4. The combination, substantially as set forth, of an electrically-actuated vibrator,
its motor-magnets, source of electric energy and circuits, and the anchor leveř
which is struck by the vibrator and moved in both directions.
5. The combination, substantially as set forth, of an electrically-actuated vibrator;
its motor-magnets, source of electric energy and circuits, the anchor-lever rocked
by the vibrator, and a yielding device for steadying the anchor lever.
6. The combination of an electrically-actuated vibrator, its motor-magnets having
their poles arranged opposite to the end of the vibrator in a plane transverse to its
longitudinal axis and outside of its curve of vibration, a source of electric energy,
circuits and connections, and devices mechanically actuated by the vibrator.
7: The combination of an electric motor; a distant source of electric energy, and
a key or manual current transmitting device operated at will, electro-magnetic
controlling devices at the motor in the circuit of the distant source of energy for
throwing the local electro-motive power of said motor into and out of action at
will when an impulse from the distant source of energy is received at tlie motor;
and independent local motor-driving devices for continuously actuating the motor
when once started until a stopping impulse is received from the distant source of
energy to throw the local electric motor driving devices out of action.

page_text: .8. The combination of an electrically-actuated vibrator, its motor-magnets,
source of electric energy and circuits, contacts c¹, d', the electro-magnets for moving
said contacts to start and stop the motor, and suitable switch devices E.
9. The combination of the vibrator, its motor-magnets, the contact-fingers c¹, d¹,
the pivoted arms on which they are mounted, the link v, and the spring which
tends constantly to keep the contact-fingers in their proper normal position.
10. The combination of a vibrator, its motor-magnets, the contact-fingers c¹, d³,
the pivoted arms on which they are mounted, the pivoted link which connects said
arms, the controlling magnets which operate upon said arms to move the contact-
fingers c, d toward or from the vibrator, and the spring which tends to restore
them to their proper normal position.
11. The combination of an electrically-actuated vibrator, its split or two-part
support, a screw B¹ for adjusting the vibrator endwise in its support to vary its
normal rate of vibration, and a clamp screw b for clamping the vibrator firmly in
its adjusted position.
PHILIP M, JUSTICE,
Applicant's Agent.