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Патент USA US2405628

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Aug. 13, 1946.
'
,M. N. YARDENY '
CONTROL DEVICE
2,495,528
_
Filed Aug. 23, 1943
2 Sheets-Sheet 1
O6
0
o
Ill/ch51. MYARDENY'
INVENTOR
ATTORNEY
Aug.'13, 1946.
'
M. N. YARDENY
'
2,405,528
CONTROL DEVICE‘
Filed Aug. 23, 1943
2 Sheets-Sheet 2
-FIG.6
M (‘F/EL. MYZRDENY
INVENTOR
Q», B/EWam/w
ATTORNEY
Patented Aug. 13, 1946
2,405,628
UNITED STATES PATENT OFFICE
2,405,628
CONTROL DEVICE
1
Michel N. Yardeny, New York, N. Y.
Application August 23, 1943, Serial No. 499,635
“ 5 Claims.
(01. 172-239)
This invention relates to electrical control ap
paratus for placing a useful load in one of several
predetermined positions, particularly to electrical
control apparatus in which the useful load is
moved by a drive means and a plurality of selec
tively operable switch means are provided for con
trolling starting of the drive means and stopping
‘same in a predetermined position as selected by
operation of one of the switch means.
2
rent, shunt, series or universal, squirrel cage, etc.
For the purpose of illustration a series wound
motor is shown in which the armature is con
nected in series with a ?eld winding ‘I. The wind
ing at one end is connected by a lead 8 with the
terminal 9 of a source of current through the ar
mature if the motor is series connected, or di
rectly if some other type of motor is used, the
other end of the winding being connected with
One of the objects of the invention is the pro 10 contact points I 0, I I. The latter are normally en
vision of means for starting the drive means and
gaged by contact arms I2, I3 of a relay having
stopping the same accurately and de?nitely in the
magnet coils I4, I5. The coils, when energized,
selected predetermined position.
attract the arms I2, I3 in this particular example
Another object of the invention is the provision
against tension of retrieving springs into engage
of switch means for preventing an accidental or 15 ment with contact points I6, I'I, connected to the
unintentional momentary restarting of the drive
terminal I8 of the source of current by a lead I9.
means after it has reached its stopping position
The arms I2, I 3 are connected together by a lead
and when and While the selected switch means is
28. The common tap of the coils I4, I5 is con
released.
nected by a lead ‘M to the terminal 22 of asuitable
Another object of the invention is the provision 20 source of current, such as potentiometer 23 con
of means for starting movement of the drive
nected across the terminals 9, I8 of the source of
means always in the same direction in response
the current. (The potentiometer may be omitted
to the operation of a selected switch means.
however.) The free end of the coil I4 is con
My device is suitable for various applications
nected by a lead 24 to the contact arm 4. The
including tuning of radio apparatus, particularly 25 end of the coil I5 is connected by a lead 25 to con
for successively tuning the radio apparatus to
tact points 21 of push button switches 28. Each
various predetermined frequencies, for operating
switch 28 has three contact points, indicated by
a frequency band switch, etc., also for other ap
numerals 29 and 38 in addition to the points 21.
plications in which a certain useful load must be
The points 29 are connected by leads 3| to the
placed in one of several predetermined positions. :21.‘ corresponding contact points I. The points 38
My invention is more fully described in the ac
are connected by a lead 32 with the terminal 9 of
companying speci?cation and drawings in
the source of current.
which
Normally the relay coils I4, I5 are tie-energized,
Fig. l is a diagrammatic view of my control ap
the circuit being interrupted at the switches 23
paratus for placing a useful load in one of several :3“ by means of retrieving springs 33 (Figs. 3 and 1i)
predetermined positions;
Fig. 2 is a similar view of a modi?ed system;
Figs. 3 and 4 are detail views of a control switch
for the control apparatus according to the inven
tion.
which urge the switch buttons 28 upward, out of
contact with the points 21, 29 and 36. Since both
arms I2, I3 normally engage the points It, II,
they disconnect the motor from the circuit.
The operation of the device is started by de
Fig. 5 is a diagram of a modi?ed connection for
the motor shown in Fig. 1 in Which a modi?cation
pressing one of the switch buttons 28 thereby
dynamic braking is employed; and
21, 29, and 30. As a result, a circuit will be
closed for the relay coil I5 across the terminals
Figs. 6 and 7 are diagrammatic views of modi
?ed systems using dynamic braking of the motor.
My remote control system as shown in Fig. 1
consists of a, number of contact points I mounted
in spaced relation to each other preferably on a
common insulation base or disc 2. The contact
points are preferably arranged in a circle con- =1
centric with a shaft 3 on which a contact arm 4
is mounted, sliding over the contact points. The
shaft 3 is connected by a suitable transmission 5
with an electric motor 6. The latter may be of
any suitable type, for direct or alternating cur 55
connecting together the corresponding points
9, 22 through lead 32, points 353, 27, and leads
26, 2|. Coil I5 will attract the arm I3, bringing
it in contact with the point IT. A circuit will
now be closed for the motor through connector
8 from the terminal 9, point It, arm I2, con
nector 2D, arm I3, point I1, and lead I9 to the
terminal I8. The motor will rotate, causing ro
tation of the contact arm 4.
The circuit for the
other relay coil I4 will remain disconnected, how
ever, untl the arm 4 reaches the contact I which
is connected by the corresponding lead 3I with
2,405,628
3
the corresponding point 29 of the selected switch
28. When this contact is established the coil It
will be also energized, its circuit being closed from
the terminal 22 of the potentiometer 23 through
leads 2!, 24, arm ll, engaged point l, lead 3!,
contact points 21, 3D, and lead 32. The arm I2
will be raised into engagement with the point It
4
When both coils M, l5 are energized after arm
4 engages one of the points I, both arms I2, I3
will be raised, short circuiting the armature
through the lead ‘II and stopping the motor by
dynamic braking.
The principle of dynamic braking can be used
with various direct current or universal motors,
with or without relays. The diagram of Fig. 5
thereby disconnecting the motor from the circuit.
is also applicable to a case where the motor has
To expedite stopping of the motor an automatic
brake on any other mechanical brake of an ordi 10 permanent magnets for its ?eld, the shunt Wind
nary construction may be employed.
The relay coils M, i5 will be deencrgized when
ing it and lead ‘II being then omitted.
Another modification is shown in Fig. 6 in
which the armature circuit of motor 75 is con
the selected switch button is released. Both
trolled by a single relay coil '58 controlling an
arms I 2, I 3 will be then moved downward against
the contact points I0, I l, disconnecting the motor 15 arm Q2. The shunt ?eld winding ‘IQ of the motor is
energized as soon as coupled switches ‘I9, 82 are
from the circuit until another switch button is
depressed.
The shaft 3 can be connected to a useful load
such as variable condenser 34. The shaft 3 can
be also connected to a contact arm
succes
sively engaging contact points 35 for closing in
dividual circuits 3?, Bl’ for operating motors 38
closed.
The armature will be then also ener
gized, the arm $2 being held on the point It by
a spring. Relay '53 will be de-energized, but the
motor will rotate (always in the same direction)
until the arm it engages a contact 8, connected
by a lead 3!, with the contact point 29 of a pair
of contact points 29,
connected by depressing
or other electrical devices from an independent
the selected switch or push button 28. Relay
source of current 39, such as band switches in
radio devices. Rotary or snap switche can be 25 ‘it will be then energized, contact l3 being closed
and attract the arm
against point IE3 and short
also used with provision for automatically dis~
circuiting the armature through a lead at. The
connecting all other switches when a selected
motor will be then stopped by dynamic braking,
switch is closed.
the ?eld being still energized. The shaft 3 is
A modi?ed system is shown diagrammatically
in Fig. 2. The contact arm ll is connected by 30 thus placed in its predetermined position.
In the modi?cation of Fig. '7 which should be
the transmission 5 with an induction motor lid
examined together with Fig. d a series wound
having reversing windings 5.6 and [.12. The wind
motor Bl is used with a series winding 9!. Its
ings are connected together at a common tap t3
operation is the same as in the case of Fig. 6
connected by a lead 44 with the terminal is of
the source of current, the other terminal 9 being 35 but the motor armature will be short circuited
through the ?eld winding 9i when the relay ‘i3
connected by lead 32 with contact points 39 of
is energized. The dynamic braking effect will
switches 28. The winding £132 is connected by a
be produced by the current, generated by the
lead 45 with the contact points 29 of the switches
armature and passing through the ?eld winding.
28. This winding will he therefore energized
whenever one of the switches 2% is closed thereby 40. It should be noted that the potentiometer is
not necessary for the operation of the systems
causing the motor iii) to rotate, advancing the
according to the invention and may be dispensed
arm 5. As soon as the arm ll engages the contact
with, the relays being then connected directly to
point I connected with the contact point 2i
the line or to a transformer.
of the selected depressed switch 28, the other
The push buttons used are preferably of a
?eld winding ill will be also energized, causing
type
in which a button, once depressed, remains
the motor to be stopped by the opposing electro
in a closed position and is released automatically
motive forces if the motor is single phase A. 0.,
only when another button is depressed, or when
or, if it is series wound D. C., or other type with
all the buttons are released by a special release
opposed ?eld windings, it will be stopped by the
button. With such an arrangement the motor
?eld being demagnetized.
remains short circuited, preventing its accidental
The switch contact points 21’, 2:9 as shown in
Figs. 3, Ll are mounted on a level above the con
tact points St on resilient arms ill, All’ so that the
point 3E3, leading to the source of current will
movement.
I claim as my invention:
1. An electrical control apparatus comprising
be disconnected ?rst, thereby making it impos- ; a plurality of contact elements mounted in
spaced relation to each other; a contact meme
sible for the motor to have one winding dis
ber arranged for a relatively movable engage
connected prior to the other, in which case the
ment with the contact elements; a drive means
motor would receive a rotative impulse, chang
including a motor to effect relative movement
ing the position of the arm ll.
Fig. 5 shows a circuit diagram in which the 60 between the contact elements and the contact
member; a circuit means for causing rotation of
motor is connected to be stopped by dynamic
the motor always in a predetermined direction;
braking. According to Fig. 5 which should be
a plurality of switch elements, each of said
examined together with Fig. 1 the ?eld winding
switch elements comprising three contact points,
ll] of a motor lli is connected to the terminals
one of said contact points being adapted to be
!8, '9 by leads I9, TH and ":2 with a switch "I3.
connected with a source of current, the second
The armature of the motor M is connected by
contact
point being connected with said circuit
leads ‘I5, ‘I5 with the contact arms i2, I3, oper
means, and the third contact point being con
ated by the relay coils I4, l5. The ?eld winding
nected in a circuit with a corresponding contact
‘I0 remains energized all the time. ri‘he arma
element; means for interconnecting the three
ture is normally short circuited by the arms I2,
contact points of a selected switch element there
l3 and a lead 'Il, but when relay H3 is energized
by connecting the circuit means with the source
‘by depressing one of the push button switches
of current for causing rotation of the motor; and
28, relay arm I2 will be raised, permitting the
means for causing the motor to be stopped in
current to flow through the armature, causing
response to the contact member being in en
the motor to rotate in a corresponding direction.
5
2,405,628
6
g'agement with the contact element connected to
the third contact point of the selected switch
element, the ?rst contact point of each switch
element being constructed and arranged to be
switch element being constructed and arranged
spaced relation to each other; a contact mem
motor to effect relative movement between the
contact elements and the contact member; a
circuit means for causing rotation of the motor
always in the same direction; a plurality of
to be disconnected not later than the other two
contact points when the selected switch element
is released.
disconnected not later than the other two con Cl
4. An electrical control apparatus comprising
tact points when the selected switch element is
a plurality of contact elements mounted in spaced
released.
relation to each other; a contact member ar
2. An electrical control apparatus comprising
ranged for a relatively movable engagement with
a plurality of contact elements mounted in
the contact elements; a drive means including a
ber arranged for a relatively movable engage
ment with the contact elements; a drive means
including a motor to effect relative movement
‘between the contact elements and the contact
switch elements, each of said switch elements
member; a circuit means for causing rotation 15 comprising three contact points, one of said con
of the motor always in a predetermined direc
tact points being adapted to be connected with
tion; a plurality of switch elements, each of said
a source of current, the second contact point be
switch elements comprising three contact points,
one of said contact points being adapted to be
connected with a source of current, the second
ing connected with said circuit means, and the
third contact point being connected in a circuit
with a corresponding contact element; means for
interconnecting the three contact points of a se
contact point being connected with said circuit
means, and the third contact point being con
lected switch element, thereby connecting the cir
nected in a separate circuit with a correspond
cuit means with the source of current for caus
ing contact element; means associated with and
ing rotation of the motor, and relay means ar
operable by each switch element for intercon 25 ranged to be energized and to stop the motor
necting the three contact points of a selected
when energized, in response to the contact mem
switch element, thereby connecting the circuit
ber being in engagement with the contact ele
means with the source of current for causing ro
ment connected to the third contact point of the
tation of the motor, the second and third con
selected switch element, the ?rst contact point
tact points of each switch element being yield 30 of each switch element being constructed and
ably supported at a shorter distance than the
arranged to be disconnected not later than the
?rst contact point from the means for intercon
other two contact points when the selected
necting the three contact points, thereby con
switch element is released.
necting all three contact points by depressing
5. An electrical control apparatus comprising
the second and the third contact points prior to
a plurality of contact elements mounted in spaced
engaging the ?rst contact point when a selected
relation to each other; a contact member ar
switch element is operated and disconnecting the
ranged for a relatively movable engagement with
?rst contact point prior to the second and third
the contact elements; a drive means including
contact points when the selected switch element
a motor to effect relative movement between the
is released; and means for causing the motor to 40 contact elements and the contact member; a
be stopped in response to the contact member
circuit means for causing rotation of the motor
being in engagement with the contact element
always in the same direction; a relay means for
connected to the third contact point of the se
controlling said circuit means for the purposes
lected switch element.
aforesaid; a plurality of switch elements, each
3. An electrical control apparatus comprising
of said switch elements comprising three con
a rotatably supported contact arm, a plurality
tact points, one of said contact points being
of stationary contact elements mounted in spaced
adapted to be connected with a source of cur
relation to each other concentrically with the
rent, the second contact point being connect
axis of rotation of the contact arm and arranged
ed with said circuit means, and the third contact
to be successively engaged by the contact arm;
point being connected in a circuit with a corre
a plurality of switch elements, each of said switch
sponding contact element; means for intercom
elements comprising three contact points, one
necting the three contact points of a selected
of said contact points being adapted to be con
switch element, thereby connecting the circuit
nected with a source of current, the second con—
means with the source of current for causing ro
tact point being connected with said circuit 55 tation of the motor; and a second relay means
means, and the third contact point being con
arranged to be energized and to stop the motor
nected in a circuit with a corresponding contact
element; means for interconnecting the three
contact points of a selected switch element,
thereby connecting the circuit means with the 60
source of current for causing rotation of the mo
tor; and means for causing the motor to be
stopped in response to the contact member be
ing in engagement with the contact element con
nected to the third contact point of the select
ed switch element, the ?rst contact point of each 65
when energized, in response to the contact mem
ber being in engagement with the contact ele
ment connected to the third contact point of the
selected switch element, the ?rst contact point
of each switch element being constructed and ar
ranged to be disconnected not later than the
other two contact points when the selected switch
element is released.
MICHEL N. YARDENY.
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