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Патент USA US2261386

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Nov. 4, 1941-
R. Kl-:BLusEK ET Ax.'l
2,261,386
_ TUNING INDICATOR SYSTEM
Filed Aug. 5, 1939
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Patented Nov. 4, 1941
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UNITED STATI-:s PATENT
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2,261,386
OFFICE
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2,261,386- >
TUNING INDICATOR SYSTEM
Richard Keblnsek, Hnibrecht Laban, and Hen
drikus Bernardus Ulrich, Eindhoven, Nether
lands, assignors to N. V. Philips’ Gloeilampen
fabrieken, Eindhoven, Netherlands, a corpora
tion oi' the Netherlands .
Application August s, 1939, sensi No. 283,532
En the Netherlands September 3, 1938
6 Claims.
(Cl. 11G-124.1)
This invention relates to a wireless receiving
.
is or are only visible if the main dials `iointly with -
set comprising a tuning device having a plurality
the associated auxiliary dials appear in front of
of main dials for the various wave length ranges. '
the window.
This set is characterised in that it comprises for
n
,
l
VIn a further favorable form of construction of
one or more bands from one or more wave length 5. the wireless receiving set according to the inven
ranges particular auxiliary dials which areasso
ciated with one or more auxiliary pointers and
which are substantially longer than the corre
sponding bands on the main dials and through
the cooperation of a screen moving relatively in
tion the movement of the wave length switch has
the eii'ect of moving the device carrying the dials
and the frame of the pointers to the desired posi
tion.
'
In order that the invention may be clearly un- .
relation to the tuning device the auxiliary pointer
derstood and readily carried into efiect it will
or pointers is or are only visible when the main
pointer or pointers cooperates or cooperate with
a dial containing the bands under consideration.
A tuning device of this kind may be used with
now be described more fully with reference to the
advantage in wireless receiving sets comprising
accompanying drawing.
`
y `
Figs. l, 2 and 3 show one form of construction
of the wireless receiving set according to the in
vention and more particularly that part which
exhibits the dial, Fig. 1 being a sectional view _
means for the obtainment of the so-called band
_taken on the line I-I of Fig. 2, Fig. 2 being a
spreading.y Such sets comprise means for en
front elevation, and Fig. 3 being an enlarged par
larging, so to speak, a given wave-band. If a
mainpointer of the set on one of the main dials gg tial view of Fig. 2 showing only the scales and
pointers which are viewable through the panel
indicates a. given band, an auxiliary pointer in
window when the receiver is operated in the
the set in cooperation with one of the auxiliary
dials permits of effecting this tuning accurately.
short-waver range.
_
The Wall I of the cabinet has formed in it a
As a rule, the band-spreading means will alone
be used in the ultra-short wave region. 'When 25 window 2. At the back of the wall I there are
two vertical guides 3 ‘on which a frame compris
in this latter case tuning is eii’ected in the me
dium wave or long wave range, the auxiliary dials y ing bars‘4 'and 5 is adapted to slide by means of
and the associated auxiliary pointer or pointers
may give rise to confusion. This is avoided in
sleeves 6, "I, 8, and 9, said frame carrying a plate
Ill which has the various main and auxiliary
the set according to the invention by the> screen 30
which is relatively movable in relation to the
tuning device so that the auxiliary pointer and
the auxiliary dial are only visible when the main
pointer cooperates with the dial containing the
bands under consideration which bands can be '35
enlarged by means of band spreading means pro
dials mounted on it. This frame carries in addi
tion a guide II for the auxiliary pointer I2. The
frame provided with the plate I0 and the auxil
iary pointer I2 can be raised and lowered by ’
means of- a knob 23 whose rod extends through
a slot 24 of the cabinet.
The guides 3 have in addition mounted on them
a further frame'which comprises barsA I3 and I4
and is adapted to slide on the guides 3 b_.v means
of sleeves I5 and I6. The bar I3 serves _as a
tionary tuning device but preference will gen
erally be given to movable arrangement of the '40 guide. for the main pointer 29. 'I'he sleeves I5
and .IS are provided `with an extension 25 and
tuning device and to arranging for the non
2l engaging blocks 26 and 28 arranged to be sta
transparent parts of the set which surround a
tionary in the cabinet. The cooperation of the
window in the set to serve as a screening device.
extensions 25 and 21 with the blocks 26 and 28
In a favorable embodiment of the set accord- `
ing to the invention the main and auxiliary dials- 45. has the effect of determining the lowest position Y
of the frame of the main pointer 29. ‘
are rectilinear and arranged parallel to each
The plate' I0 has dials I'I, I8, I9, 20, 2l and
other. It is, of course, also possible to form them
22 mounted on it. The dials I1, I8 and'l9 serve
into a- curved shape. In order to eiiect tuning
for the long-wave, medium-wave and ultra-short
as accurately as possible it is preferable, accord
ing to the invention, that the auxiliary dialsl 50 wave regions. There is a difliculty in tuning sta
tions in the ultra-short-wave range since a com
should extend throughout the length of the main
paratively great number of stations are included
in a. small number of narrow-bands. These bands
From a constructional point of view it is simple
are indicated in Figs. 2 and 3 by small black
to mount the main and auxiliary dials all on a
movable device used in common suchas a slide, 55 `blocks on the dial I9. The fact that the set com
prises band-spreading means permits of one or
a drum, a iilm or the like which is partly visible
more of these b’ands being extended over a much
through a window in the set, the device or. devices
larger region. For this reason the device ac
carrying the main and auxiliary pointer lor
cording to the invention comprises the auxiliary
pointers. being so coupled to the device carrymg
vided in the set. It is, of course, possible to cause '
the screen device to move relatively to the sta
dials.
'
-
K
the dials that the auxiliary pointer or pointers 00 dials 20, 2| and 22 for the bands 30, 3| and Ma.
2
2,281,380
except that for the short-wave range, an aux
In the position of the tuning device shown in
iliary pointer adapted to cooperate with said
Fig.2onlythedials Hand Ilandthemain
pointer 29 are visible through the window 2.
additional scales, a panel of the receiver pro
vided with an aperture and means so constructed
Provision is not made of any supplementary aux
iliary devices for these dials.- It however, the
range of wave-length is changed to ultra-short
and arranged for adjusting the scale >carrying
member and the pointers relatively to the panel
aperture that when the receiver is -adjusted to
receive wave-lengths other than short-waves only
the scales corresponding to said wave-lengths
wave region and if the knob 23 is raised at the
same time, the dials _I1 and Il disappear` from
the window 2 and are raised and, as shown in
Fig. 3, the ultra-short-wave dial (main dial) il 10 and the main‘pointer are viewable through the
and the auxiliary dials 20, 2l and 22 becomel panel aperture, whereas when the receiver is
adjusted to receive short-waves, the short-wave
visible. Simultaneously, the sleeves 6.` and I of
range scale. the additional scales and the main
the frame of the plate l0 have raised the sleeves
and auxiliary pointers are viewable through the
l5 and I6 of the frame of the main pointer 2O
to such extent that this main pointer cooperates 13 panel aperture.
-5. A tuning indicator system for a radio re
with the ultra-short-wave dial Il. Due to the
ceiver of the type capable of being' tuned to a
displacement of the plate l0 the auxiliary point
plurality of wave-length ranges including a
er I2 has been raised simultaneously and. as
short-wave
range and provided with band-spread
shown in Fig. 3, it extends in front of the aux
mechanism when operated in the last mentioned
iliary dials 20, 2| and 22. ,Near the wave band
range, comprising a member carrying a plurality
30 to which the pointer 29 points is shown a given
of scales each corresponding to one of said ranges
range which corresponds with the auxiliary dial
and a plurality of additional scales each corre
20. Obviously, this arrangement leads to the ad
sponding t0 a predetermined and different por
vantage that the auxiliary dials and auxiliary
tion of the short-wave range scale. a main point
pointer are only visible when tuning is efi'ected
er adapted under certain conditions of opera
in the ultra-short-wave region.
tion of -the receiver to cooperate with the ilrst
What we claim is:
'
mentioned plurality of scales and under other
1. A tuning indicator for a radio receiver of
conditions to cooperate with said scales except
the type capable of being tuned to a plurality
o! wave-length ranges including _a short-wave 30 that for the short-wave range, an auxiliary
pointer operativelyvassociated with the band
range, comprising a member having formed
spread mechanism and adapted to cooperate
thereon a plurality of main‘ scales each corre
sponding to one of said ranges and a plurality of
with said additional scales,va panel of the receiv- '
er provided with an aperture and means so con
'auxiliary scales each corresponding to only a
portion oi.' the- scale of the short-wave range, a 35 structed and _arranged for adjusting the scale
main pointer adapted to selectively cooperate with
all of the ñrst mentioned plurality of main scales
or with said_scales except that of the short
wave range, and an auxiliary pointer adapted to
cooperate with said auxiliary scales.
carrying member and the pointers relatively to
the panel aperture that when the receiver is
adjusted _to receive wave-lengths other than „
short-waves only the scales corresponding to said
40 wave-lengths;`and the main pointer are viewable
2. A tuning indicator for -a radio receiver of '
the type capable of being tuned to a plurality ot
wave-length ranges including a short-wave range,
comprising a slidable member carrying a plu
>rality of main scales each corresponding to one 45
of said ranges, a plurality of auxiliary scales also .
carried by said slidable member and each corre
sponding to only a portion of the scale of the
sh‘ort-wave range, a main pointer in one position
of the slidable member adapted to cooperate with 50
through the -panel aperture,V whereas when the
receiver is adjusted to receive short-waves, the
short-wave range scale, the additional scales and
the main and auxiliary pointers are viewable
through the panel aperture.
6. A tuning indicator system for a radio re
ceiver of the' type capable of being tuned .to at
least a long-wave range and a short-wave range,
comprising a member carrying a plurality of par»
allelly-arranged scales each corresponding to one
of said ranges and a plurality of auxiliary scales
each corresponding to a predetermined and.` dii
ferent portion of the short-wave range scale, a
all of the ilrst mentioned plurality of main scales
and in a second position ot said member adapted
to cooperate with-said scales except that of the
main pointer adapted under certain conditions of
short-wave range, and an auxiliary pointer
adapted to cooperate with said auxiliary scales. 55 operation of the receiver to cooperate with the
long-wave and the short-wave scales and under
3. A tuning> indicator as defined in claim 2
other conditions to cooperate with only said long
wherein the receiver is provided with a panel
wave scale, an auxiliary pointer adapted to coop
having a viewing window, the slidable member
erate with said auxiliary scales. a panel of the
being positionedbehind said window and adjust
able to selectively expose the short-wave scale 60 receiver provided with an aperture and. means
so constructed and arranged for adjusting the
and the auxiliary scales or the main scales ex
scale'carrying member and the pointers relatively
clusive of the short-wave scale.
to the panel aperture that when the receiver is
4. A tuning indicator system for a radio receiv
adjusted to receive long wave-lengths only the
er of the type capable of being tuned to a plu
scale corresponding to said wave-lengths‘and the
rality of wave-length ranges including a short 65 main .pointer Iare viewable through the panel
wave range, comprising a member c
a
aperture, whereas when the receiver is adjusted'
plurality of scales each corresponding to one of
to re'ceive short-waves, the short-wave range
said ranges and a plurality of additional scales
scale, the auxiliary scales and the main and aux
each corresponding to a predetermined and dif
ferent portion of the short-wave- range scale.,a 70 iliary pointers are viewable through the panel
main pointer adapted under certain conditions
of operation of the receiver to cooperate with the
first` mentioned- plurality of scales and under
other conditions to cooperate with said scales
aperture.
RICHARD KEBLUSEK.
HUIBRECHT LABAN.
HENDRIKUS BERNARDUS ULRICH.
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