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Патент USA US2413051

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ilw-
24, 1946.
M. M. ‘IBORRA
2,413,051
HORIZONTALLY vAND VERT'ICALLY ADJUSTABLE PHOTQELECTRIC SOUND HEAD
Filed Feb. 24, 1944
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Dec. 24, 1946.
M. M. IBORRA ~
2,413,051
EORIZONTALLY AND VERTICALLY ADJUSTABLE PHOTQELECTRIC SOUND AHEAD
Filed Feb. 24, 1944
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2 Sheets-Sheet 2
Patented Dec. 24, 1946
2,413,051
UNITED STATES PATENT ‘OFFICE
2,413,051
HORIZON TALLY AND VERTICALLY ADJ UST
ABLE PHOTOELECTRIC SOUND HEAD
Miguel Martinez Iborra, Buenos Aires, Argentina,
assignor to Fonoband Sociedad Anonima Fono
impresiones Sobre Bandas De Papel, Buenos
Aires, Argentina, a corporation of Argentina
Application February 24, 1944, Serial No. 523,713
6 Claims.
(Cl. 179—100.3)
1
2
This invention relates to improvements in
sound reproducers, for the reproduction of sound
of example, in the accompanying illustrative
drawings, wherein:
records printed or engraved on hands or ribbons
of paper or other ?exible material, either opaque
Figure 1 is a diagrammatic plan view of a sound
reproducer providedwith the devices in accord
ance with this present invention, consisting, in
the embodiment of Fig. 1, of a single reproduc
ing unit.
or transparent, and essentially has for its'object
to provide in apparatus of this kind certain im
provements, whereby important advantages are
secured in the operation and use of the same.
Figure '2 is a partial plan view of an embodi
The improvements which form the object of
ment of the same sound reproducer, provided
this invention may conveniently be applied to any 10
with two reproducing units and showing the
type of apparatus for the reproduction of sound
means for the control or connection of the prin
records printed or engraved on ribbons or bands
of ?exible or bendable material, obtained accord
ing to any known system or means, and is sub
stantially characterized by the provision in ap
paratus of this kind, of one or more sound repro
cipal elements, and
Figure 3 is an elevation, partially sectional, on
15
ducing units, each consisting of a source of light,
the line A—A of the foregoing ?gure.
Similar ntunbers of reference have been used
to indicate like or corresponding parts in the
several views. .
a photoelectric cell and a re?ecting plate, ar
ranged at three ?xed points which in relation
With reference to the drawings and the con
struction there shown, the reference number I
with each other, form a suitable angle between
incident and re?ected beams.
A further improvement characterizing this in
indicates a carrier or loading plate carrying a
loading reel Ell on which is wound the ?exible
band or ribbon 2 of paper or plastic or other
vention consists in that the several elements of
said reproducing units form an integral block,
provided with means for performing the motion
of said units individually or together in a vertical
and horizontal direction by the operation of a
double acting device, or by means of separatev
?exible material, provided with the engraved or
printed sound record which, after passing in
front of one or more sound reproducing units by
the action of suitable feeding means, winds on
the winding or take-01f plate 3 ‘carrying take
off reel 49, being guided in its travel by a suit
able number of guide rollers 4, conveniently ar
control.
Another object of this invention consists in the 30 ranged.
provision of a feed roller adapted to operate in
dependently of or in cooperation with a pressure
The shaft 5 of the carrier or loading plate 1
and loading reel 5!] is mounted to turn idle but
has a frictional engagement therewith, and is
caused to rotate by the tension of the sound rec
roller, for causing the feed or advance of the
sound record ribbon at a practically constant lin
ear speed, independently of any variation in the
ord ribbon 2, thereby allowing of varying at will
diameter of the coils formed :by said ribbons or 35 the unwinding speed of the ribbon, by which
bands as wound up on the reels.
v
meansthe quality of the reproduction may be
The present improved type of, apparatus is also
highly enhanced. The shaft 5 is also provided
characterized by being provided with means for
with a brake device, not shown, which may be
varying the speed of the sound record ribbon
of any convenient or known kind, for the purpose
by suitably interchanging the feed roller used and 40 of
maintaining said ribbon in a condition of con
its diameter.
'
‘ v
stant tension, adapted to be adjusted at will.
The improved type of apparatus is also pro
Referring to said ?gures, it will also be seen
vided with means adapted to control different
that the reproducer unit, the feed means for the
signal lamps for the purpose of automatically 45 sound record ribbon, and the means for control
indicating which sound tracks‘ or grooves are
ling the same, are supported on a horizontal plate
being traversed by the reproducing unit, in the
5, secured to the frame ‘I of the apparatus by
case of bands or ribbons provided with two or
means of screws 8 or the like. The loading reel 59
more sound grooves.
,
The invention also has in View other objects
which will more fully be understood from the
following
speci?cation.
‘
_
_ '
is journaled on an arm 51 carried by frame ‘I.
50
I
In order that the invention may be readily
understood and carried into, practice, a preferred
embodiment of thesame has been shown, by way
55
The sound reproducing unit in accordance with
this invention substantially consists of a lumin
ous source or exciting lamp unit'S, in front of
which is axially arranged a re?ecting plate ii]
for supporting the band or ribbon 2 during its
passage in front of the said exciting unit, and
'7
‘2,413,051
4
tion of the pressure roller 3|, to which end a
a photo-electric cell H, placed in the direction
control knob 34 is rotatably mounted on the
of the light beams re?ected by said band after
their incidence on the sound groove or track en
graved or printed on the same, the said three
component elements being arranged on a hori
plate 8, and two connecting rods 35 and 36,
pivotally connected to said knob 34, are linked
at their opposite ends respectively to the sup
porting plate 12 of said unit, and to the arm 32
of said roller 3|.
On the free end of the shaft 26 of the eccen
provided, as will hereinafter be explained, with
tric 25 is mounted a lever or eccentric disc 31.
means for vertically or horizontally displacing
conne'cted'by means of a connecting rod 32 to anthe same, either independently ‘or together by 10 other control 'knob 39 or, if desired, to the same
individual or combined manual means of control.
knob 34, above referred to, so as to allow, in
The source of light 9 consists of an exciter, of
this latter case, of the simultaneous control of
zontal base or iframe plate I2 so as to form ‘to
gether an integral block with three ?xed points,
the usual type, adapted to project through a slot
all the'adjustable elements of the apparatus.
and by an optical system, not shown, an incident
From Figure 2, it will be seen that the spindle
15
beam of light l3 on the re?ecting plate l8, said
4|] of the knob 39 is mounted for longitudinal slid
plate being arranged between said source of light
ing motion in the slot 4|, formed in the plate 8,
and the photoelectric cell H in such a position
being connected to the control knob 34 by means
that the re?ected beam l4 will so issue from the
surface of re?ecting plate It] as to fall on the
of another connecting rod 42, or the like. If de
sired, a disc 43 of insulating material may be
photo-electric cell | | and form with the incident 20 mounted on the spindle 40 of said button, and on
beam l3 an angle of adjusted amplitude and best
said disc a series of contacts 44, electrically con
suited for a perfect reproduction.
nected by means of leads 45 to small electric
With reference to Figures 2 and 3, it will be
lamps may be provided, a contact ?nger 46, ?xed
seen that the plate 12 which supports the optical
ly carried by knob 39, being adapted to travel over
system just described, is connected by its lower 25 said contacts.
face to a slidable device, substantially consisting
From Figure 1 it will be seen that the band
of a ?xed plate l5, ?xed to the plate 6, above
or ribbon 2, when unwinding from the loading
referred to and provided on its upper face with
reel 58 carried on supporting plate 4, will be
oblique and parallel ribs |6, in which are formed
guided to ‘travel over the re?ecting plate Ii),
dovetail shaped grooves or slots H, in which 30 with its face provided with the sound grooves or
slide ribs or teeth l8, of corresponding shape,
tracks directed toward the incident luminous
formed on a plate l9, so as to guide the displace
ment of this latter in a horizontal direction, and
in an oblique or slanting direction with regard to
beam I3 projected by one or more light sources,
and being constantly urged along by the action of
the feeding means, it will be caused to pass be
tween the rollers 28 and 3| and to ?nally wind
the axis of the exciter lamp 9.
To the upper face of said plate I9 is secured
by means of screws or the like, a thin plate 20,
and through the four corners of said plate 20
extend tubular bushings 2|, in which slide a
on a take-01f reel or spool 49, ?xed on pinion 30
of the winding or take-off plate 3.
The speed of the band 2 will of course be de
termined by the diameter of the feed roller 28;
similar number of cylindrical rods 22, ?xedly 40 in consequence, and in order to be able to vary
attached to the supporting plate or base l2 of
said speed at will, this feed roller 28 is mounted in
the reproducing unit, so as to serve as guides for
a detachable manner, so that it may readily be
the sliding motion of the reproducing unit in its
replaced by another roller of a ‘different diameter.
vertical rise or descent. Normally, said base
45 It will be evident that when performing such
plate l2 and the members ?xedly attached there~
change, the distance separating the said roller
to are maintained in their lowermost position
28 from the pressure roller 3| will also be varied,
by the action of springs 23, arranged between
but such distance can not exceed the thickness
each of the aforesaid bushings 2| and small
of material formed by the band 2; in order to over
washers 24, affixed to the free ends of the guide
come this difficulty, it will be su?icient to rotate
50
rods 22 and constantly pressing with their lower
the knob 34 which by means of the connecting rod
faces against the periphery of one ,or more ec
36 will cause the rotation of the arm or lever 32
centric discs 25, formed integral with a shaft 25,
around the spindle 33, whereby the pressure
rotatably mounted in a supporting member 2's’,
roller 3| will be carried to ‘the position shown by
secured to the plate 20, above referred to.
full lines and the separation between said pres
The feed mechanism of the ribbon or band 2
sure roller 3| and the feed roller 28 will be ad
substantially consists of a feed roller 28, of rub
justed to the desired degree.
ber or other suitable material, of which the pinion
By means of this arrangement, a suitable feed
29 is synchronously driven by the pinion 30 of the
ing motion with a constant linear speed of the
winding or take-off plate 3, as by means of an
band 2 will be assured, at any desired speed. At
electric motor ‘or the like, ‘arranged to drive 60 the same time, the speed will be prevented from
one of the said pinions through a suitable speed
varying with the variation in diameter of thecoil
reducing device. Adjacent to said roller 28 is
of roller as said band passes from one plate
arranged a pressure roller 3|, which operates as
or reel to the other._
_
a guide means for the band or ribbon, being
Simultaneously with the rotation of ‘the control
adapted to engage with the former roller 28 and
knob 34‘ for causing the displacement of the pres
cause, by the friction between both rollers, the
sure roller 3|, to compensate for the changed
feeding of said band or ribbon.
.
.
With reference to Figure 2 it. will further be
seen that said pressure roller. 3| is rotatably
mountedat one of the ends of an arm 32, pivotally
connected at its opposite end to the plate 6, by
means of a’ spindle 33 -or the like.
The displacement of the optical system which
constitutes the reproducing unit, may be per
formed in a simultaneous manner with the mo
diameter of feed roller 28, the connecting rod 35,
secured to said knob, will cause the transverse
displacement of the base plate |2 and of the re
producing unit which forms a part of the same,
this plate and unit then passinghto occupy’ the
position indicated by full lines in Figure 2, while
the adjacent connecting link 42, by acting on the
spindle '40 of the second knob 39, will cause the
2,413,051
displacement of the same along the slot 4| of
the plate 6.
In the case where bands or ribbons provided
explanations will be required by those skilled in
the art.
It will be evident that various modi?cations of
with several parallel sound grooves or tracks are
construction and detail may be introduced, with
used, so as to cover different longitudinal zones of (II out departing from the scope of this invention, as
the same band, a vertical displacing motion may
clearly- determined in the claims hereto annexed.
readily be transmitted to the reproducing unit,
Having now particularly described and ascer
so that the beam emerging from the exciter lamp
tained the nature of my said invention and in
9 will fall on the desired sound groove as of the
what manner the same is to be performed, what
lower, the middle or the upper part of said band. 10 I claim and desire to secure by Letters Patent is:
To that end, it will be sui?cient to rotate the
1. In a system for reproducing sound from a
control knob 39, which by means of the connect
record impressed ?exible tape having a sound
ing rod 38 and eccentric 31 will cause the rota
tion of the shaft 26 and eccentric 25 ai?xed there
track, a supporting frame, a loading reel and a
take-off reel, a ?rst vertical pin whereon said
to, whereby these latter eccentric members, by 15 loading reel is freely mounted, a second vertical
pressing against the lower side of the plate l2
pin whereon said take-off reel is ?xedly mounted,
which serves as a base or support for the repro
ducer unit, will vary its vertical position in the
said pins being mounted vertically on said frame,
a record impressed tape having a sound track and
being carried on said reels, path de?ning means
tactor ?nger 46, through the contact members 20 de?ning a tape path from said loading reel to
44 and leads 45, will light, according to the posi
said take-on reel, a reproducing unit plate, an
tion of said ?nger, a proper signal lamp arranged
exciter lamp source, a photo-electric cell, a re
manner required.
At the same time, the con
in openings or windows, not shown, so as to indi
cate which groove or sound track which is being
traversed or reproduced.
flecting guide element, said source, said cell, and
said guide element being ?xedly mounted on said
reproducing unit plate as an integral unit, said
If desired, the control knob 39 may be dispensed
re?ecting guide element being positioned on said
with, in which case the vertical displacement of
plate to guide said tape over said guide element
the reproducing unit may be performed from the
with the sound track on said tape in position to
same main knob 34, which for that purpose will
re?ect the incident beam from said source as a
be provided with a double acting control.
re?ected beam upon said cell, and mounting
30
In the embodiment shown in Figure 2, the ap
means for controllably displaceably mounting
paratus is supposed to be provided with addi
said plate on said frame in such manner as to
tional sound reproducing devices, which also may
be readily removable therefrom as a unit, said
be either ?xed or movable, for simultaneously
mounting means comprising means for controlla
traversing and reproducing two or more dif
bly displacing said plate horizontally on said
ferent sound tracks of one single reproducing 35 frame, and means for controllably displacing
band, which will allow of reproducing independ
vertically said reproducing unit plate.
ently or together a song and a musical accom
paniment, engraved or printed separately, as well
as of simultaneously reproducing an event and
the hour at which the same took place, and other
di?erent effects.
Besides the advantages resulting from the ar
rangements as above described, the improved type
of apparatus in accordance with this invention
offers the further advantage that the ?xed rela
tion existing between the three component ele
ments of the reproducing unit formed by the ex
citer, the re?ecting plate and the photo-electric
2. In a system for reproducing sound from a
record impressed ?exible tape having a plurality
of parallel sound tracks, a supporting frame, a
loading reel and a take-off reel, a ?rst vertical
pin whereon said loading reel is freely mounted,
a second vertical pin whereon said take-oil reel
is ?xedly mounted, said pins being mounted verti
cally on said frame, a record impressed tape hav
ing a plurality of parallel sound tracks and be
ing carried on said reels with its breadth disposed vertically and its sound tracks displaced
vertically from each other, path de?ning means
cell, arranged as an integral block or unit, allow
of obtaining a perfect adjustment of said unit 50 de?ning a tape path from said loading reel to
said take-off reel, a reproducing unit plate, an
apart from the rest of the apparatus, since after
exciter lamp source, a photoelectric cell, a re
adjusting to the desired degree the relation be
?ecting guide element, said source, said cell, and
tween the said three elements, the same may be
readily inserted into the reproducing apparatus
without altering its operation, this being a fea
ture of considerable importance for the manufac
said guide element being ?xedly mounted on said
reproducing unit plate as an integral unit, said
re?ecting guide element being positioned on said
plate to guide said tape over said guide element
with a sound track on said tape in position to
ture and use of the apparatus here described.
On the other hand, the separation which can
re?ect the incident beam from said source as a
be provided between the pressure roller 3| and the
feed roller 28 allows of the motion of the band 60 re?ected beam upon said cell, and mounting
means for controllably displaceably mounting
2 taking place in a reversed direction, which is
said plate on said frame in such manner as to
a most important feature since it enables the
be readily removable therefrom as a unit, said
operator to repeat, at will, the engraved or printed
mounting
means comprising means for controlla
phrases or musical pieces.
bly displacing said plate horizontally on said
If necessary, the novel type of apparatus may 65 frame, said mounting means further comprising
also be provided with an electrical resistance,
means for controllably displacing vertically said
conveniently inserted in the circuit of the motor,
reproducing unit plate and said source and said
or with a suitable brake device adapted to oper
cell carried thereon to vertically position the in
ate in the same direction of motion, so as to ob 70 cident beam from said source in register with a
tain any convenient or necessary delay in the feed
desired one of said sound tracks on said tape.
ing motion, for the transcription of engraved or
3. In a system for reproducing sound from ‘a
printed text.
record impressed ?exible tape having a plurality
From the foregoing description, the invention
of parallel sound tracks, a supporting frame, a
will have clearly been understood and no further 75 loading reel and a take-off reel, a ?rst vertical
7"
2,413,051
pin whereon said loading reel is freely mounted,
a second vertical pin whereon said take-off reel
is ?xedly mounted, said pins being mounted ver
reproducing unit plate as an integral unit, said
re?ecting guide element being positioned on said
plate to guide said tape over said guide element
' tically on said frame, a record impressed tape
having a plurality of parallel sound tracks and
being carried on said reels with its breadth dis
posed vertically and its sound tracks displaced
vertically from each other, path de?ning means
de?ning a tape path from said loading reel to
with a sound track on said tape in position to re
flect the incident beam from said source as a re
?ected beam upon said cell, and mounting means
for controllably displaceably mounting said plate
on said frame in such manner as to be readily
removable therefrom as a unit, said path de?ning
means comprising a detachably and‘ inter
said take-0d reel, a reproducing unit plate, an 10 changeably mounted feed roller and an adjacent
exciter lamp source, a photo-electric cell, a re
pressure roller between which said tape travels
fleeting guide element, said source, said cell, and
and whereby said tape is driven a pivotally sup
said guide element being ?xedly mounted on said
ported arm whereon said pressure roller is ro
reproducing unit plate as an integral unit, said
tatably mounted, whereby said arm cam be
reflecting guide element being positioned on said
swung to position, said pressure roller to engage
plate to guide said tape over said guide element
feed rollers of different diameters, and common
with a sound track on said tape in position to
means for controllably displacing said plate
reflect the incident beam from said source as a
horizontally and vertically on said frame to ver
re?ected beam upon said cell, and mounting
means for controllably displaceably mounting 20 tically position the incident beam from said
said plate on said frame in such manner as to be
readily removable therefrom as a unit, said
mounting means comprising common means for
controllably displacing said plate horizontally
and vertically on said frame to vertically. posi
tion the incident beam from said source in reg
ister with a desired one of said sound tracks on
said tape.
4. In a system for reproducing sound from a
record impressed ?exible tape having a plurality
of parallel sound tracks, a supporting frame, a
loading reel and a take-off reel, a ?rst vertical
pin whereon said loading reel is freely mounted,
a second vertical pin whereon said take-off reel
is ?xedly mounted, said pins being mounted ver
tically on said frame, a record impressed tape
having a plurality of parallel sound tracks and
being carried on said reels with its breadth dis
source in register with a desired one of said
sound tracks and also for controllably swinging
said arm to position said pressure roller in de
sired position for any diameter of feed roller.
5. A system according to claim 2, said mount
ing means and said means for displacing said
plate horizontally comprising a rib projection ex
tending obliquely to the optical path axis from
said source to said guide element, said mounting
means further comprising an element provided
with a groove extending obliquely to said optical
path axis and adapted to slidingly receive said
rib projection, and means for applying lateral
displacing pressure to said reproducing unit
plate.
6. A system according to claim 2, said means
for controllably displacing vertically said repro
ducing plate comprising resilient means urging
said reproducing unit plate to an extreme posi
posed vertically and its sound tracks displaced
vertically from each other, path de?ning means 40 tion with reference to said frame and rotatable
cam means adapted to apply pressure opposing
de?ning a tape path from said loading reel to
said resilient means for vertically adjusting the
said take-off reel, a reproducing unit plate, an
exciter lamp source, a photo-electric cell, a re
?ecting guide element, said source, said cell, and 45
said guide element being ?xedly mounted on said
position of said reproducing unit plate.
MIGUEL MARTINEZ IBORRA.
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