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Патент USA US2118944

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May 31, ‘1938.
Original Filed June 22, 1929
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' a4. PURDX.
Patented May 31, 1938
Chester Arthur Purdy, Oak Park, Ill., assignor to
,Western Electric Company, Incorporated, New
York, N. Y., a corporation of New York
Original application June 22, 1929, Serial No.
372,818, now Patent No. 1,963,381. Divided and
this application March 13, 1934, Serial No.
5 Claims.
This invention relates to a control mechanism,
and more particularly to a revolution counter
and control mechanismv for material winding ma
chines, and is a division of my copending appli—
cation entitled Condenser winding machine, Se
rial No. 372,813, ?led June 22, 1929 now Patent
An object of the invention is to provide a
simple, inexpensive and eflicient mechanism for
automatically controlling machine operations.
In accordance with this object, one embodi
ment of the invention contemplates the provision
of a revolution counter and control mechanism
for material winding machines, wherein a revolu
tion indicating wheel is driven in synchronism
with the winding arbor through an electromag
netic clutch which is automatically actuated to
start each operating cycle of the machine. Ad
justable contacts carried by the indicating wheel
control electrical circuits for controlling various
operations of the machine and for effecting the
disengagement of the clutch when the indicating
wheel arrives at a predetermined indication,
whereupon the indicating wheel is automatically
25 returned to its initial or starting position.
Other features and advantages of the inven~
tion will become apparent from the following de
tailed description when read in conjunction with
the accompanying drawing, in which
Fig. l is a vertical sectional view of a revolu
tion counter and control mechanism embodying
the features of the invention;
Fig. 2 is a fragmentary plan section taken on
line 2—2 of Fig. 1, and
Fig. 3 diagrammatically illustrates electrical
circuits that may be controlled by the mecha
Referring to the drawing, the revolution
counter and control mechanism comprises a
40-, shaft Ill journaled in a housing or frame II and
having secured at its upper end a rotatable elec
tromagnet I2 carrying an energizing coil I3 the
terminals of which are connected to leaf spring
contacts I5 and I6 secured to an insulator I'I
45 fastened to the underside of the electromagnet.
The leaf spring contacts I5 and IS in turn resil
iently engage contactors I8 and I9, respectively,
which slidably contact with rings 2| and 22, re
spectively, mounted in a stationary insulator 23
and through which the energizing coil I3 is con
nected to an electrical current supply, such as
.a battery 24 (Fig. 3). Journaled within a ver
tical bore 25 of the shaft Ii! is a smaller shaft
26, to a shoulder 2'! of which an iron disk 28 is
55 resiliently secured by means of a spring disk 29.
(Cl. 192-142)
The disk 28 is adapted to be attracted and ro
tated by the electromagnet I2 when it is ener
gized. Thus, the electromagnet I2 and the iron
disk 28 constitute the driving and driven mem
bers, respectively, of what is essentially an elec
tromagnetic clutch.
The shaft 26 terminates at its upper end in a
square shank carrying a suitably calibrated cir
cular member or indicating wheel 30 on the un
derside of which is secured one end of a torsion 10’
spring 32 having its other end secured to a sta
tionary pin 33 projecting from a cover plate 34
fastened to the top of the frame II. Through
the rotation of the indicating wheel 30, energy
is stored in the spring 32 so that when the
electromagnet I2 is deenergized and the iron
disk 28 is retracted therefrom by the spring disk
29., the spring 32 automatically returns the in
dicating wheel to its initial or starting position
where a stop 35 secured to the underside of the
indicating wheel engages a. stop pin 36 project
ing from the upper side of the cover plate 34.
Spacer pins 3i project slightly above the upper
surface of the electromagnet I2 to prevent stick
ing of the clutch members when the electro
magnet is deenergized.
Carried at the upper end of the shaft 26' is a
contacting arm 38 which is frictionally rotatable
about the indicating wheel 30 so as to be adjust
able angularly with respect thereto. A clamp 30
ing nut 39 is provided for securing the arm 38
to the indicating wheel in any desired position.
The arm 38 is bent in under the indicating wheel
where it carries a contact 40 adapted to engage
with a contact Ill mounted in an insulator 42 of 35
the cover plate 31%. The contacts 40 and III may
be arranged to control electrical circuits for auto->
matically controlling machine operations. For
example, when the mechanism is employed in
conjunction with a condenser winding machine 40
of the type disclosed in the copending applica
tion above referred to, the contacts 40 and 4|
may be connected in electrical circuits, one such
circuit being illustrated in Fig. 3, for controlling
the disengagement of the electromagnetic clutch 45
to permit the indicating wheel to return to its
initial position upon arriving at a predetermined
When the mechanism is employed with a wind
ing machine, as mentioned above, the shaft I0 50
is driven in synchronism with the winding arbor
through interconnecting reduction gears or in
any other suitable manner (not shown). The in
dicating wheel 30 may be calibrated to indicate
revolutions of the arbor and the contacting arm 55
38 is adjusted so that its contact 40 engages the
It will be seen that the counter and control
contact 4| when the winding arbor has completed
a predetermined number of revolutions.
While the electromagnet I2 is energized, the
indicating wheel 38 is driven by the shaft l0
through the electromagnetic clutch, as described
above. An energizing circuit for the electromag
mechanism of the present invention is of simple
and inexpensive construction and consists of very
few parts. The electromagnetic clutch provides
net I2 is shown in Fig. 3, and may be traced as
follows: from the grounded battery 24 through
10 conductor 45 the coil |3 of the electromagnet I2,
a practical driving means for the indicating wheel
and the torsion spring provides a simple means
for quickly returning the indicating wheel to its
initial position. The simplicity of the structure
including the electromagnetic drive and the tor
sion spring provide great flexibility for rendering
conductor 46, contact 41 and grounded contact
the mechanism readily adaptable to a large va
riety of uses.
sliding contact with the periphery of the disk‘
It is to be understood that the invention is not
48 and the latter is carried by a one-revolution’ limited to the particular embodiment thereof
herein illustrated'and described, except in so far 15
15 shaft 49. The periphery of the disk 48 is com
pletely insulated except for a small portion there
as is de?ned by the appended claims.
of, whereby the energizing circuit of the electro
What is claimed is:
magnet i2 is maintained closed ‘only while the
1. A control mechanism comprising a movable
disk 48 is at rest in its normal position, as shown control member, means for moving said member,
20 in Fig. 3. Thus, upon rotation of the disk 48 the said means being capable of assuming two condi 20
electromagnet I2 is de-energized, whereupon the tions, one in which it is effective for moving said
torsion spring 32 automatically returns the indi— member and the other in which it is ineffective
cating wheel to its initial position as described for moving said member, an electrical circuit con
trolled by said member, and means including a
Rotation of the shaft 49 may be controlled by one-revolution clutch controlled by said circuit 25
any suitable one-revolution clutch 50 under the for controlling said member moving means.
2. A control mechanism comprising a movable
control of a solenoid 5|, the energizing circuit of
which may be controlled by the counter contacts control member, means including an electromag
48 and 4|. As shown in Fig. 3, the contact 4|, netic clutch for moving said member, an electri
when engaged by the contact 40, establishes an cal circuit for holding the elements of said clutch
energizing circuit for the solenoid 5|, which may engaged, a second electrical circuit, a one-revo
be traced as follows: from grounded battery 24, lution clutch controlled by said second circuit,
disk 48.
The contact 41 is designed to make a
through conductor 53, the coil of solenoid 5|,
conductor 54 and contacts 4| and 4D to ground.
Upon being energized, the solenoid 5| causes the
actuation of the one-revolution clutch 50 to cause
contacts controlled by said one-revolution clutch
for controlling the ?rst mentioned circuit, and
contacts controlled by said control member for
controlling said second circuit.
the shaft 49 and contact disk 48 to make one
3. A counting mechanism comprising a mov
complete revolution and then stop. It is obvious
that the shaft 49 may be provided with cams,
able indicating member, disengageable means for
driving said member, and means controlled by
said member for disengaging said driving means
and, after a time interval, for again engaging said
40. electrical contacts, or other means for initiating,
stopping or otherwise controlling various oper
ations of the machine or for operating various
signalling means.
If desired, the indicating Wheel 30 may be pro
45 vided with several adjustable contacting arms
similar to the arm 38 and such arms may each be
provided with one or more contacts similar to
the contact 40 for cooperating with companion
contacts similar to the contact 4| to selectively
control additional electrical circuits. For exam
ple, the arm 38 is shown in the drawing with a
second contact 60 adapted to engage a contact
6| in the insulator 42. Also, there is shown in
Fig. 1, a second arm 63 similar to arm 38 and car
rying a contact 64 adapted to engage a contact
65 in the insulator 42. It is obvious that the
additional pairs of contacts Ell-6| and 64-55 may
driving means.
4. A control mechanism comprising a movable
control member, means including an electromag
netic clutch for moving said member, an electri~ 45
cal circuit for holding the elements of said clutch
engaged, a second electrical circuit, contacts
under the control of said control member for
controlling said second circuit, and means con
trolled by said second circuit for controlling the 50
?rst mentioned circuit.
5. A counting mechanism comprising a mov
able indicating member, disengageable means
for driving said member, yieldable means for dis
engaging said member from said driving means, 55
electromagnetic means for engaging said member
with said driving means, and means under the
readily be employed for controlling additional
control of said member for controlling said elec
electrical circuits in the manner illustrated and
described in connection with the contacts 40 and
tromagnetic means.
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