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Dec. 3, 1946.`
E H, OWENS
2,411,891
RADIO CONTROL APPARATUS
Filed Aug. 19, 1943
2 Sheets-Sheet l
INVENTOR
FREEMAN H. OWENS
BY
Dec. 3, 1946.
F. H. OWENS
2,411,891
RADIO CONTROL APPARATUS
Filed Aug. 19, 1943
2 Sheets-Sheet 2
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INVENTOR
FREEMAN H.owENs
Bf Mm
2,411,891
Patented Dec. 3, 1946
UNITED STATES PATENT OFFICE
2,411,891
RADIO CONTROL'APPARATUS
Freeman H. Owens, New York, N. Y.
Application August 19, 1943, Serial No. 499,295
11 Claims. (Cl. Z50-20)
2
The invention here disclosed relates to mech
anism for adjusting and controlling radio ap
paratus. The several forms of the invention are
divisions from inventions disclosed and claimed
or more windings i9 wrapped about a strip of in
sulating material Il, bent or otherwise formed
into a ring, for receiving a magnetic core l2.A
The latter is shown as engaged on and adjusted
by a tubular screw i3 having a tuning knob i4
in `co-pending patent applications, Serial No.
on the outer end of the same.
397,504, ñled June l0, 1941, Patent No. 2,337,568,
The magnetic core is shown as held against
issued December 28, 1943, Serial No. 450,449, ñled
rotation by having a slotted portion l5 slidingly
July 10, 1942, Serial No. 465,155, ñled November
engaged over a guide strip iii which also enters
l0, 1942, and Serial No. 484,934, ñled April 28,
1943, Patent No. 2,353,186, issued July l1, 1944. 10 between the ends of and serves to hold the coil
supporting strip E l in place.
This application is a continuation-in-part of each
The volume control is shown as a pair of op
of said parent applications.
Objects of the invention are to provide a unit
for tuning, volume control and other related pur
poses, which will occupy but small space, te in
expensive and practical from the commercial
standpoint and be accurate, reliable and other
wise desirable foil the user.
A special object ofthe invention is to combine
positely wound resistance coils il on a flat strip
of insulating material I8 formed into the shape
of Aa ring and supported at the back of the tun
ing coil in position for engagement at the inside
by a pair of rubbing contacts i9 carried by an
arched spring 29 on a split block 2l adjustably
clamped at 22 on the inner end of a spindle 23
the several control elements of the unit so that 20 rotatably and slidably supported in the tubular
they may be quickly, easily and conveniently op
screw I3.
A knob or button 2li on the outer end provides
erated all by the fingers of one hand.
means for turning and pushing the spindle 23
Other desirable objects attained by the inven
and a spring 25 in the center cavity 25 of tun
tion will appear as the specification proceeds.
The novel features and combinations through 25 ing knob I4 and between the back of center knob
24 and forward end of screw sleeve I3 serves to
which the purposes of the invention are realized
thrust the rotary push button assembly outwardly
are set forth in the specification, broadly covered
into the position shown in Fig. 1.
in the claims and illustrated by way of practical
The mechanism to be actuated by the push
example in the accompanying drawings. It is
realized, however, that actual physical structure 30 button operation of spindle 23 is shown as a
switch made up of a contact button 2l in line
may be modified and changed in various ways, all
with and engaged by the insulating bushing 28
within the true intent and broad scope of the
of the volume control, said contact being pressed
invention. The illustration, therefore, is to be
forward by spring 29 and adapted when forced
taken primarily by way of disclosure and not by
inward to bridge contacts 39, 3l for closing a
way of limitation, actual scope of the invention
circuit or circuits.
being as »hereinafter claimed.
The unit described occupies but small space
Fig. 1 is a broken longitudinal sectional view of
and a number of these units can be supported
one of the combined tuning, volume control and
in close side by side relation to provide for a
switch units.
plurality of pre-tuned and pre-set volume con
Fig. 2 is a transverse view, showing particular
trolled radio circuits, which can be selectively cut
ly the volume control, as on substantially the
into operation automatically through a program
plane of line 2_2 of Fig. 1.
selector such as disclosed in the applications above
Fig. 3 is a broken horizontal sectional view of
identiñed, or be selectively chosen at any time by
a portion of the manual switches as on substan
45 simply pressing in one of the push buttons 2d.
tially the plane of line 3-3 of Fig. 1.
The coaxial, in-line disposition of the tuner,
Fig. 4 is a broken longitudinal sectional view
Volume control and switch provides a particularly
of a micrometer form of tuner unit.
compact, space saving and sturdy form of con
Fig. 5 is a cross sectional detail as on substan
struction and one which is readily understood and
tially-the plane of line 5_5 of Fig. fl.
Fig. 6 is a broken longitudinal sectional view 50 easily and conveniently operated by the user.
The parts are simple and few and inexpensive to
of anotherform of the-tuner unit.
manufacture and assemble.
Fig. 7 is a transverse sectional detail on sub
The core guiding and coil supporting strip I'B
stantially the plane of line 'l-l of Fig. 6.
is shown as extending through the supporting
In Fig. l a compact tuner of the inductance or
permeabiilty type is illustrated, comprising one 55 partition 32, into position to enter between the
¿3
2,411,89'1
ends of the volume control supporting ring I8,
thus to hold and eithel` partly or wholly support
the volume control coils. In addition, these coils
-may be supported by resting on a shelf portion
33 of the insulating back plate 34 carrying the
switch contacts.
The switch E?, Se, 3l, etc., may control one or
a number of circuits. In the patent applications
(Serial Nos. 397,504 and 450,449), in which the
ñrst forms of the invention originated, the manu
ally closed switch was utilized to eiîect operation
of a magnet for closing the several circuits neces
sary for actuation of a radio receiver tuned to a
selected broadcasting or transmitting station.
In the form of the invention illustrated in
Figs. 4 and 5, tuning is eiîected by rocking a seg
mental or H-form of core 35 one way or the other
within the winding or windings IIJ,
For purposes of line adjustment, a micrometer
type of control is illustrated in the form of a
Vernier knob 3S in front of the direct acting knob
37 and carrying an outer ball race 38 containing
4
Y
bar pivotally mounted at its ends on the sup
porting tube 5l and carrying a series of lugs 59
for engagement by the catches 5B of yokes 56
which thus serve to stop the bar in diiîerent po
sitions. The universal bar being connected with
the movable element of the tuner, thus serves to
set the tuner in the position desired for receiving
a station selected by angular adjustment of a
particular catch. In the patent application re
ferred to, the universal bar Si! is swung forwardly
by a magnet energized through switch contacts
Eil, 5I and is returned by spring power to the
tuning position determined by the setting of the
catch carrying yoke 56.
The nut block 55 is shown coupled to yoke 56
by having a notch 5I in the lower edge of the
same engaged over a cross pin 52 connecting the
lower side portions of such yoke.
The catch 58 which stops the tuning yoke is
pivoted at S3 so that it may be swung up into
an active position, as shown in Fig. 6, or lowered
clear of the corresponding stop 59 on the tuning
yoke and this positioning of the catch is deter
mined in the illustration by a lever 64 pivoted at
ing a tongue 42 extending through an arcuate 25 G5, having an upwardly angled forward end 65
slot ¿i3 in the front panel 44 into engagement
disposed between rearwardly struck lugs 67 of
balls 3Q bearing on an innner race member 40
supported on an inside row of balls 4I and hav
over the reduced diameter portion ¿l5 of the core.
the pivoted catch and having a cam slot 58 in its
The inner knob 3l being fixed to the inner race
rearward end engaged by a pin 59 on the sliding
member do, enables quick and more or less coarse
switch block 48.
adjustments of the core while the outer knob 39 30
Thus, with the construction described, each
through the ball race reduction provides for ñner
time the magnet for operating the tuning yoke
tuning adjustments.
is energized and switch block ¿is is advanced to
The core 35 is shown as freely supported on
close the circuit or circuits for bringing in a se
spindle 23 s0 as not to interfere with the rotary
lected station, the lever @Il will be rocked by the
volume control or longitudinal switch operating
cam action 68, 69 to raise the catch 58 into place
movements of such spindle.
In the form of the invention last described and
in the one following, the push button operation
of the spindle is utilized to directly close a switch,
where the cooperating stop lug 59 on the tuning
yoke will engage that catch on the return move
l ment of such yoke to'leave the receiver tuned
for that particular selected station.
as in the ñrst form, and in addition, to actuate a 40
rI‘he switch closing lever ¿lâ is indicated as hav
rocker for other switch closing purposes.
ing a connection at 'i0 with the core of a station
The rocker is shown in the form of a lever 46
selecting solenoid and a yielding retainer bar is
pivoted at 131 in position to be engaged by spindle
indicated at 'I I which will hold such lever, whether
23 and pivotally connected with a switch block 48
it be actuated by a station selecting magnet or by
slidingly guided at ¿i9 and carrying contacts 55
direct push of spindle 23 and release any previ
for cooperation with stationary switch contacts
ously held lever.
'
5I. These switch contacts may be sufficient to
The Fig. 6 form of tuning unit has incorporated
control all necessary .radio circuits for which the
in it additional switch means shown as a disc 'i2
unit is tuned and volume controlled.
on the front end of an insulating sleeve 'I3 slid
The direct operating switch comprises in this 50 ingly engaged on spindle 23 and arranged to
instance, a bridging contact 52 on the back of the
connect the terminals 14, ‘l5 of the volume control
volume control block 2l arranged to connect
windings Il', thus to serve as a muter switch when
switch contacts 53, 5e, which latter in the par
the manual is operated. „
ticular disclosure (patent application, Serial No.
To cause the muter switch, at IE, 74, I5, to close
465,155) in which this form of the invention
ahead of the station. selecting or ‘.‘On” magnet
originated, are connected with an “On” magnet
switch at 52, 53, 5d, the insulating sleeve ,'13 carry
for closing a necessary power circuit or circuits
ing the outer switch contact l2, is slidingly con
each time the manual is operated.
ñned on the spindle 23 between the ñxed support
Instead of a separate tuner and volume control
2i and the inner end of screw sleeve I3 anda
for each station, the tuning mechanism may be
frictional
C-shaped wire
dragspring
is provided
i6, Fig. in
'7, having
the form
inturned
of
employed for determining the adjustment of a
single tuner for all stations, with separate volume
ends projecting through' oppositely disposed open
control and manual switch mechanism for each
station, substantially as illustrated in Figs. 6
similar to that ñrst disclosed in that the knob I4
ings in the sleeve 73 into frictional sliding en
gagement with the spindle.
Upon inwardV pressure on knob 24, the switch
disc l2, traveling with spindle 23, will engage
the volume control contacts I4, ‘i5 before switch
turns a screw sleeve I3, but in this case the mem
ber shifted by the screw is a nut block 55 non
element 52 will engage contacts 53, 5d and with
continued pressure on the knob, the spindle 23
rotatably conñned between the sides of a yoke 56
mounted for rocking adjustment on a pivot tube
5l and carrying an upstanding catch 58 for en
gagement by a stop lug 59 on the tuning yoke 60.
The latter, as fully disclosed in the parent case,
Serial No, 484,934, is in the nature of a universal 75
will slide through sleeve 'i3 to carry the ñxed
support 2i the necessary further inward move
and 7.
In Fig. 6 the tuning adjustment is generally
ment to close the inner switch 52, 53, 54.
'
When pressure on the knob is released, spindle
23 will be retracted by spring 25 to substantially
simultaneously open both switches 52, 'l2 and the
2,411,891
,s
¿i
loose, frictionally carried sleeve 'I3 will be re
stored to its original position by engagement
wi-th the inner end of screw sleeve i3, the spindle
continuing its outward movement until the fixed
switch block 2i comes against the inner end of
sleeve 13. Thus, by the combined action of the
ñxed and loose switch members, the spindle is
stopped at the outward limit of its movement,
after restoring the movable switch plate ’i2 to
the position where it will close the muter circuit
in advance of the closing of the magnet circuit or
circuits.
What is claimed is:
l. Radio control apparatus comprising a tubu
lar support, a control spindle rotatable and slid
able through said support, a sleeve slidably en
gaged on said spindle at the inner end of said
means engageable by-said ñxedly mounted switch
element upon inward thrust of said spindle, sta
tionary muting switch elements engageable by
said slidably mounted switch member on inward
movement of said spindle in advance of cooper
ation of said ñXedly mounted switch element
with said Erst-mentioned switch contact means,
said spindle with said iixedly mounted switch
element continuing its inward
the engagement and stopping
mounted switch member by
switch elements, spring means
movement after
of said slidably
said stationary
for shifting said
spindle in the reverse direction and a stop en
gageable by said slidably mounted switch ele
ment in the outward spring movement of said
spindle to return said slidably mounted member
back into its original relation with respect to
said ñXedly mounted switch element at the in
support, a switch block ñxed on said spindle at
ner end of the same.
the inner end of said sleeve, control switch con
5. Radio control apparatus comprising a ro
tact means engageable by said switch block upon 20
tatably and slidably mounted control spindle, a
inwardVV thrust of said spindle, a switch member
switch closing member slidably engaged on said
on said slidable sleeve, cooperable muting switch
spindle, a switch element íixedly mounted on the
elements engageable by said member on inward
spindle at the inner end of the slidably mounted
movement of said spindle in advance or" coopera
switch
member, control switch contact means en
25
tion of said switch block with said nist-mentioned
gageable by said ñxedly mounted switch element
switch contact means, saidl sleeve being engage
upon inward thrust of said spindle, stationary
able by said switch block upon outward movement
of said spindle and engageable at its outer end
muting switch elements engageable by said slid
ably mounted switch member on inward move
ment of said spindle in advance of cooperation
of said fixedly mounted switch element with said
first-mentioned switch contact means, said spin
dle with said ñxedly mounted switch element
port.
continuing its inward movement after the en
2. Radiocontrol apparatus comprising a tubu
gagement and stopping of said slidably mounted
lar support, a control spindle rotatable and slid
switch member by said stationary switch ele
able through said support, a sleeve slidably en
ments, spring means for shifting said spindle in
lgaged on said spindle at the inner end of said
the reverse direction, a stop engageable by said
support, a switch block fixed on said spindle at
slidably mounted switch element in the outward
the inner end of said sleeve, control switch con
tact means engageable by said switch block upon 40 spring movement of said spindle to return said
slidably mounted member back into its original
inward thrust of said spindle, a switch member
relation with respect to said ñxedly mounted
on said slidable sleeve, cooperable muting switch
switch element at the inner end of the same
elements engageable by said member on inward
and a frictional drag connection between said
movement of said spindle in advance of cooper
ation of said switch block with said first-men 43 spindle and slidably mounted switch member.
6. Radio control apparatus comprising a
tioned switch contact means, said sleeve being
tuner having tubular screw and nut elements, a
engageable by said switch block upon outward
knob for rotatably adjusting said tubular screw,
movement of said spindle and engageable at its
a spindle slidably and rotatably operable in said
outer end with the inner end of said tubular
tubular screw, a knob for turning and pushing
support, spring means for yieldingly holding said
said spindle, a contact member carried by said
spindle in outward position with the end of said
spindle, a volume control winding engageable
sleeve so engaged with the inner end of said tubu
by said contact member, switch means operable
lar support and a yielding frictional coupling be
by said spindle in the longitudinal movements
tween said sleeve and spindle.
3. In combination, a tuner having tubular screw Ul Ui of the same and including a movable switch ele
ment carried by the spindle and a relatively sta
and nut elements, a knob for rotatably adjusting
tionary element cooperable therewith, said knobs
said tubular screw, a spindle slidably and ro
on the tubular screw and spindle being disposed
tatably operable in said tubular screw, a knob
in adjoining relation and a spring between the
for turning and pushing said spindle, a contact
member carried by said spindle, a volume control 60 knobs for holding said spindle normally in posi
tion with the switch elements in separated rela
winding engageable by said contact member,
tion.
switch means operable by said spindle in the lon
'7. Radio control apparatus comprising a ro
gitudinal movements of the same and including a
tatably and slidably mounted control spindle, a
relatively stationary contact and a cooperating
contact carried by said spindle, said knobs being 65 switch closing member slidably mounted on said
spindle, a second switch closing member mount
disposed in adjoining relation and a spring be
ed on said spindle, control switch contact means
tween said knobs for shifting said spindle in a
engageable by said second switch closing mem
direction to hold the switch contacts normally
ber upon inward thrust of said spindle, station
separated.
4. Radio control apparatus comprising a ro 70 ary muting switch elements engageable by said
slidably mounted switch closing member on in
tatably and slidably mounted control spindle, a
ward movement of said spindle in advance of
switch closing member slidably engaged on said
cooperation of said second switch closing mem
spindle, a switch element ñxedly mounted on
ber with the control switch contact means en
the spindle at the inner end of the slidably
mounted switch member, control switch contact 75 gageable thereby, said spindle with said second
spring
with the
means
innerfor
end
yieldingly
of said tubular
holding support
said spindle
in outward position with the end of said sleeve so
engaged with the inner end of said tubular snp
7
2,411,891
switch closing member having continued inward
movement after engagement of said slidably
mounted switch closing member with said sta
tionary muting switch elements, spring means
for shifting said spindle in the reverse, outward
direction and a stop engageable by said slidably
mounted switch element in said outward spring
movement of said spindle to return said slidably
mounted member back into its original relation
further movement of the plunger necessary to
operate the power switch after operation first of
the muter switch and means for automatically
returning said muter switch member to its initial
relation on the plunger~in the movement of said
plunger by said spring means.
10. Radio control apparatus of the character
disclosed comprising a plunger, relatively sta
tionary switch elements spaced longitudinally of
with respect to said second switch closing 10 said plunger, cooperating switch actuating mem
member.
bers on said plunger and normally positioned
8. Radio control apparatus comprising a
to engage said relatively stationary switch ele
tuner having a tubular element and a knob for
ments, one in advance of the other, in the move
rotatably adjusting the same, a spindle rotat
ment of the plunger in one direction said ñrst
ably and slidably operable in said tubular ele 15 engaging switch member being yieldingly mount
ment and provided with a knob for turning and
ed on said plunger to permit the further move
pushing the same, a ring of insulating material
ment of the plunger necessary to elîect the sub
supported about the inner end of said spindle,
sequent engagement of the other switch mem
oppositely disposed resistance coils wound on
ber with the other switch element, spring means
said ring, a brush mounted on said spindle in
for thrusting the plunger i'n the opposite direc
position to bridge said resistance windings and
tion and means for automatically restoring the
to thereby cut resistance in and out with rota
yieldingly mounted switch member to its normal
tion of the spindle in opposite directions, com
position on the plunger in the movement of the
panion switch elements at the end of said spin
plunger effected by said spring means.
dle and operable by the longitudinal movements 25
11. Radio control apparatus of the character
of said spindle and a spring interposed between
disclosed comprising a rotary adjusting member
the knobs aforesaid for normally holding said
of tubular construction, adjustable control
spindle thrust outwardly in position for push
means operable by said rotary adjusting mem
actuation.
ber, a plunger rotatably and slidably operable
9. Radio control apparatus comprising a 30 'in said rotary adjusting member, a volume con
plunger, relatively stationary muter switch and
trol winding about the inner end of said plunger,
power switch elements spaced longitudinally of
a contact carried by said plunger in engage
said plunger, companion switch operating mem
ment with said volume control winding and ad
bers on said plunger cooperative, respectively,
justable over said winding in the rotary adjust
with said muter switch and power switch ele 35 ment of said plunger, a switch closing lever piv
ments and said members normally spaced on
otally mounted at the inner end of said plunger
said plunger to eiïect operation of the muter
in back of said volume control winding and oper
switch in advance of the power switch in the.
ably engageable by the end of said plunger in the
movement of the plunger in one direction, spring
inward sliding movements of the same and spring
means for thrusting the plunger in the opposite 40 means for yieldingly thrusting the plunger in the
direction, means yieldingly mounting said muter
opposite direction.
switch member on said plunger to permit the
FREEMAN H. OWENS.
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