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Патент USA US2135991

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Nev. s, 1938.
c, w_ NESSELL
2,135,991
TIME AND REMOTE CONTROL SYSTEM
Filed Aug. 24, 1935
will! 7% 77
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2,135,991
Patented Nov. 8,’ 1938
uoltso S'l-ATES PATENT oesics
2,135,991
TEIE AND REMOTE CONTROL SYSTEM
Slat-once W. Nesscll, Forest Park, Ill" assignor to
Minneapolis-Honeywell Regulator Company,
Minneapolis, Minn.., a corporation 0! Delaware
Application August 24, was, Serial No. 37,777
(Cl. 250-20)
{This invention relates to combined time con
trol and remote control systems and has par
ticular utility in controlling radio sets.
it is an object of this invention to provide o
control system whereby a mechanism may ‘be
remotely positioned, or may be moved to ore=
I,
dellfrmineo positions at p‘recleteimlued intet=
ya
.
>
i
.
More speci?cally, it is an object of this ll1V€n~=
tion to provide a control system for 9. radio set
whereby the condenser shaft thereof may "ne se
niotely operated, and whereby the shott may he
placed in predetermined positions at oreileteo
mhierl times.
.
_
lei° objects and advantages will become
to those skilled in the art upon cet’eta
.se accompanying speci?cation, claims
sis,
which drawing is (liegrom
illustrated the control system of this
spoiled to a condenser
ill oi e
‘onset shaft it is positioned
. to the condenses
t
stationary contact 39. - In this marines‘ the con
tests 21, 2t, 29 and 30 foi'm limit switches.
This invention contemplates the use of a time
switch and any time switch known in the art may
be utilized therein. ‘However, for purposes of
illustration, 1 have shown this time switch to
comprise a rotor it operated by a ‘leld winding
32 to ~rotate a shaft 3% at a constant speed
through a reduction gear train 33. iidiustably
mounted on the shaft ‘3% are cams 35, 3%, 31, {i8
and 39, which are moved in a clockwise direction
by the shaft 3t. These come. contain equally
spaced high dwells which are adapted to sequels»
tially engage contact arms it, ill, ill,
and M,
respectively. The contact orms til, G6, (32,
“
oiicl
are adapted to sequentially engage con-=
tects 65, fit, Gil,
and All, the time of engage
mesit of the contacts by the contact some losing
dependent upon the length of the dwells on the
cams, one upon the speed of rotation of the
cams. ‘For purposes of illustration, the high
dwells ere designed to maintain their respec~
tive contact arms in engagement with the asso
ciated contacts tor a period of one hour, and
since ?ve coins are used in this .exempliilcation I
takes ?ve hours for the shaft M to complete
one revolution. The number of cams, the length
is also tototecl.
uctioi'l gees‘ train to
"£1 ll. The motor 'E‘QllOli‘S l~
see coemteol by ilelcl windings lo ontl it], respec
of
may
the
hecam
variecl
dwells
to suit
andthe
theparticular
speed of the
installation.
shaft
The contacts it,
ill,
and ill are connected
by means of wires so, 56, 52, E53 and lit, respec==
tively, the achievement losing such
upon
ei'ierglsstlon out theiield winding l3 shott it is
The sliders 55, lit, El, 58 and 5e are adapted to
1
sees it which
moved in one direction, end upon energizatlon
of the hold winding ill the shaft 53 is ‘moved in
the cjogsosite “section.
,
located clothe shalt i8 is a bevelled gear
tively, to sliders 55, 56, ll, 58 and es, respectively.
he manually positioned along potentiometer coils
ti, 6E,
and lit, respectively, in any suitable
manner.
This invention also contemplates the use of e
remotely located ‘potentiometer which may take
to engaging a bevelled gear ti carrying oil-shut» / the form of a resistance coil 66, slidably engagecl
meet megoher 22. The abutment member 22 is
M) moxie oi insulated material and carries a slider
Ell ecleotetl to slide across a balancing potentiom
etei“ coil 2K3. "Upon rotation of the shaft 63 the
slioler
is moyeclecross the coil 2t in alolirecu '
; tioo depending upon the direction of rotation of
c,
the shaft
The abutment member 22 is like
wise provlcleii with ?ngers 25 and 2%. Upon
movement oi’ the abutment member M to so
extreme counterclockwise position the ?nger 2%
50
is adapted to engage a contact ill to break con
tact between this contact El and a_ stationary
contact 2%. Likewise, upon movement of the
abutment 22 to an extreme clockwise position,
the finger 2B is adapted to engage a contact 29
to move the contact 29 out of engagement with a
by a manually operated slider 65. A single pole _
double throw switch is also utilized in this in
vention and may take any form, but for purposes
of illustration in this application it is shown to
comprise a switch arm 61 alternately engageable
with spaced contacts 68 and 69.
45
Leading from some‘ source of power; not
shown, are line wires ‘ill and ‘ll. Connected
across these line wires is a primary 12 of a step
down transformer ‘l3, having a secondary ‘ll.
One end of the secondary ‘M is connected by a 50
wire '75 to one, end of the ?eld winding 32, and
the other end of the secondary 14 is connected
by a wire 16 to the-other end of the ?eld wind
ing 32 to energize the field winding 32 to cause
continuous operation of the time switch.
55
2
2,135,991 -
Also connected across the line wires 10 and H
is a primary 11 of a step-down transformer 18,
having a secondary 19. One end of the secondary
19 is connected by wires 80 and 8I and a protec
tive resistance 82 to one end of a coil 83.
In a
like manner the other end of the secondary 19 is
connected by a wire 84 and a protective resist
ance 85 to one end of a coil 88. The coils 83 and
88 are connected together at their inner ends.
10 The junction of wire 8| and the protective re
sistance 82 is connected by wires 81 and 88 to
one end of the resistance coil 88 of the remotely
located potentiometer.
In a like manner the
junction of the wire 84 and protective resistance
85 is-connected by wires 89 and 90 to the other
end of the resistance coil 88 of the remotely lo
cated potentiometer. The junction of the wires
80 and BI is connected by a wire 9I to one end
of the balancing potentiometer coil 24 and the
20 other end of the balancing potentiometer coil
'24 is connected by wires 93 and 92 to the junc
tion of the wires 89 and 90. The potentiometer
coils 80, BI, 82, 83 and 84 are connected across
the wires 88 and 98 leading to the remotely lo—
25 cated potentiometer by wires 98 and 95. There
Therefore, the coils 83 and 88, secondary 18, the
balancing potentiometer 24 and the control po
tentiometers 80, 8|, 82, 83, 84 and 88 are con
nected in parallel.
Assume the parts in the position shown in the
drawing with the switch arm 81 in engagement
with the contact 89, whereby the slider 85 of
the remotely located potentiometer is electrically
connected to toe coils 83 and 88. The slider 85
and the slider 23 are located in a mid position,
consequently, the coils 83 and 88 are equally
energized to maintain the switch arm I03 in its
mid position to maintain the condenser shaft
I0 also in its mid position. Movement of the
slider 85 upwardly with respect to the coil 88
causes shunting or short-circuiting of the coil 83
to decrease the ienergizaton thereof and increase
the energization of the coil 88. Due to this un
balanced relationship of the coils 83 and 88, the
switch arm I03 is moved into engagement with 20
the contact I05 to complete a circuit from the
secondary 19 through wires 84, 89, 92 and I02,
switch arm I03, contact {05, wire I01, contacts
28 and 21, wire I09, ?eld winding I8 and wires
H8, 81, 8i and 80, back to the secondary 19. 25
fore, the potentiometer coils 80, SI, 82, 83, 88
This causes energization of the field winding I8
and 88 are located in parallel. The junction of
the coils 83 and 88 is connected by wires 98 and
91 to the switch arm 8‘? and by wires 98 and 98
to rotate the shaft I3 in a direction to move the
to the slider 28 associated with the balancing
potentiometer coil 28. The contact arms 40, 8t,
slider 23 to the left with respect to its resistance
coil 24. Movement of the shaft-I3 also causes
movement of the condenser shaft I0 of the radio 30
set. Movement of the slider 23 towards the left
42, 43 and 04‘; of the time switch are connected
causes short-circuiting or shunting of the coil 88‘
by wires 99 and I00 to the contact 88 associated
to decrease the energization thereof and to in
crease the energization of the coil 83, it being
remembered that the energization of the coil 88 35
with the switch arm 81. The contact 89 is con
35 nected to the slider 85 of the remotely located
potentiometer by the wire IN. The junction of
the wires 92 and 93 is connected by a wire I02
to a pivoted switch arm I03. Cooperating with
this pivoted switch arm I03 are spaced contacts
40 I04 and‘I05, the contact I04 being connected to
the contact 29 of the limit switch by the wire
I08, and the contact I05 being connected to con
tact 28 of the limit switch by a wire I01. Con
tact 30 is connected by .a wire I08 to one end of
45 the ?eld winding I9, and the contact 21 is con
nected by a wire I09 to one end of the ?eld
winding I8.
The other ends of the ?eld Wind
ings I8 and I9 are connected together and by a
wire I I0 to the junction of wires 81 and 88. The
50 switch arm I03 is operated by an armature II I
through a spring II2 so that when the coil 83
is energized more than the coil 88 the switch
arm I 03 is moved into engagement with con
tact I04, and when the coil 88 is energized more
55 than the coil 83 the switch arm I03 is moved into
engagement with the contact I05.
From the above wiring connections it is seen
that the left hand ends of the secondary 19, the
coil 83 and the potentiometer coils 50, 8|, 82,
60 83 and 84, the upper end of the potentiometer
coil 88 and the right hand end of the balancing
potentiometer 24 are connected together. Like
wise, the right hand ends of the secondary 19,
the coil 88, the potentiometer coils 80, SI, 82,
65 83 and 84, the lower end of the potentiometer‘
coil 88, and the left hand end of the balancing
potentiometer coil 24 are connected together.
Also, it is seen that the junction of the coils 83
and 88, and the sliders 23 and 85 are connected
70 together when the switch arm is in engagement
with the contact 89. Likewise, it is seen that
when the switch arm 81 is in engagement with
the contact 88, one or the other of the sliders
55, 58, 51, 58 and 59 are connected to the slider
75 23 and the junction of the coils 83 and 88.
was increased and the energization of the coil
83 was decreased by the upward movement of
the slider 85 of the remotely located potentiome
ter. When the slider 23 has moved sufficiently
far to the left to re-balance the energization of 40
the coils 83 and 88 the switch arm I03 is moved
out of engagement with the contact I05 to the
mid position shown in the drawing to break the
circuit through the field winding I8 to stop rota
tion of the shaft i8.
'
45
Movement of the slider 85 downwardly causes
short-circuiting or shunting of the coil 88 to
decrease the energization thereof and increase
the energization of‘- the coil 83. This causes
movement of the switch arm I03 into engage
ment with the contact I04 to complete a circuit
from the secondary 19 through wires 84, 89, 92
and I02, switch arm I03, contact I04, wire I08,
contacts 29 and 30, wire I08, ?eld winding I9 and
wires H0, 81, 8I and 88, back to the secondary
19. Completion of this circuit causes energiza
tion of the ?eld winding I9 to rotate the shaft
I3 and, consequently, the condenser shaft I0 in
the opposite direction and to move the slider 28
to the right with respect to its resistance’coil 24.
Movement of the slider 23 towards the right
causes shunting or short-circuiting of the coil
83 to decrease the energization thereof and in
crease the energization of the coil 88, it being
remembered that the coil 83 was energized more
than the coil 88 by the downward movement of
the slider 85 of the remotely located potentiome
ter. When the slider 23 has moved sufficiently
far to the right the coils 83 and 88 are rebal
anced to move the switch arm I03 out of engage 70
ment with the contact I04 to the mid position
shown in the drawing. This causes deenergiza
tion of the field winding I9 to stop further rota
tion of the shaft I8. .and, consequently, the
condenser shaft I 0.
2,186,991
Over-travel of the condenser shaft l0 beyond
its extreme positions is prevented by the limit
switches comprising the contacts 21, 28, 29 and
30 which break'the circuit to the ?eld windings
i8 or i 9 when the condenser shaft II) has been
moved to either extreme position-I The protec
tive resistances 82 and 85 are provided in the
control circuit to prevent burning out of the coils
‘ 83 and 86 when the slider 65 is moved to either
extreme position.
From the above it is seen that I have provided
a remote control system for positioning a con
denser shaft of a radio set or for positioning any
other mechanism whereby the condenser shaft
or other mechanism is made to assume a position
corresponding to the position of a slider of a
, remotely located potentiometer. By reason of
this construction, the stations, the reception of
which is desired, may be selected from some re
20 _mote point.
This invention also contemplates a system of
control where a plurality of stations may be
selected in advance, and wherein these stations
may be tuned in at predetermined times.
In
25 order to obtain this time control of the radio set'
the switch arm 61 is moved into engagement with
the contact ,68 and by reason of this movement
one of the sliders 55, 56, 51, 58 or 59 is elec
trically connected to the junction of the coils
30 83 and 86. The time switch determines the slider
which shall be so connected. The slider 55 may
be adjusted for one station, slider 56 may be
adjusted for another, and likewise the sliders 51,
58 and 59 may be adjusted for other stations,
suitable dial mechanism, not shown, being pro
vided to facilitate the proper movement of the
sliders. With the parts in the position shown in
the drawing, and with the switch arm 51 in
engagement with the contact 68, the slider 51
40 associated with the resistance coil 62 is in con
trol of the condenser shaft l0. Since the slider
51 is in a mid position the condenser shaft I0 is
likewise in a mid position. The station obtained
3
nism may be moved to these positions at prede
termined times.
Although I have disclosed oneform of my in
vention, it is apparent that other forms thereof
may become apparent to those skilled in the art
and, consequently, this invention is to be limited
only by the scope of the appended claims and
the prior art,
I claim as my invention:
1. In a system of the class described, the com,
bination of a condenser shaft for a radio set,
motor means for positioning said condenser
shaft, and a remotely located variable resistance
type controller for controlling said motor means, '
means for causing the motor means to position
the condenser shaft in proportional correspond
ence to the adjustments of said controller, a
plurality of other variable resistance type con
trollers for controlling also said motor means,
each of said plurality of other controllers being
adjustable, means for causing the motor means
to move said condenser shaft to predetermined ‘
positions as determined by the adjustment of
said other controllers, time controlled means for
placing the control of said motor means under
the control of any of said plurality of other con
trollers, and means for selectively placing the
motor means under the control of the remotely
located controller or the plurality of other con
trollers whereby the radio set may be remotely
controlled or tuned into various stations at pre
determined times.
>
2. In a system of the class described, the com
bination of a mechanism to be controlled, motor
means for positioning said mechanism, a plural
ity of separate, remotely located resistances for
controlling said motor, each resistance having
a contact arm manually adjustable to any point
thereon, means for causing the motor to adjust
said mechanism to assume a position determined 40
by the position of the contact arm, and time
actuated means for selectively placing said motor
under the control of any one of said resistances.
'3. In a system of the class described, the com-.
45 contact arm 42 is moved out of engagement with ~bination of a condenser shaft for a radio set,
the contact 41. Movement of the contact arm motor means for positioning said condenser
43 into engagement with the contact 48 places shaft, a ?rst controller for said motor comprising
the slider 58 in command and the condenser a resistance element and a contact arm capable
shaft I0 is moved to a newposition as deter
of being positioned at any point on said resist
50 mined by the position of the slider 58 in the ance element, control means for causing the
manner pointed out above with respect to move
motor to adjust the condenser shaft to assume a 50
by this time setting will be received until the
ment of the slider 65. Like operation is ob
tained when the contact arm 44 is moved into
engagement with the contact 49, or when the con
55 tact arms 40 and 4| are moved into engagement
with the contacts 45 and 46. In this manner any
station may be received and .the time'at which
this station shall be received may be de?nitely
ascertained.
From the above it is seen that I have not only '
provided a remote control system for a radio
set or other mechanism, but I have provided a
time control system wherein any number of pre
determined positions of the condenser shaft or
other mechanism may be selected in advance,
and wherein the condenser shaft or other mecha
position which is determined by the position
assumed by said contact arm, a second controller
comprising a plurality of separate resistance ele
ments, each having a contact arm capable of be 55
ing positioned at any point on its resistance ele
ment, said control means causing the motor to‘
adjust the condenser shaft to assume a position
which is determined by the position assumed by
any one of said contact arms, selecting means for
determining which of the controllers shall be
in control of said motor, and time actuated means
for placing the motor under control of any one
of said resistance elements of the second con
troller.
CLARENCE W. NESSELL.
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