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Патент USA US2113582

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April 12, 1938.
A. D. EITZEN
’ 2,113,582
MESSAGE TRANSMITTING SYSTEM
Original Filed Sept. 16, 1953
3 Sheets-Sheet l
K“‘N
/,
INVENTOR
Azfyuat
D- 5113680114
BY
M
ATTORNEY
'
‘ April 12, 1938.
A. D. EITZEN
2,113,582 '
MESSAGE TRANSMITTING SYSTEM
Original Filed Sept. 16, 1933
3 Sheets—Sheet 2
INVENTOR
W
ATTORNEY
April 12, 1938.
2,113,582
A. D. EITZEN '
MESSAGE TRANSMITTING SYSTEM
Original Filed Sept. l6,v 1933
3 Sheets-Sheet 3
INVENTOR
igzut D.
M
ATTORNEY
Patented Apr. 12, 1938
2,113,582
UNITED STATES PATENT OFFICE
2,113,582
MESSAGE TRANSMITTING SYSTEM
August D. Eitzen, Rockville Centre, N. Y., as
signor to News Projection Corporation, New
York, N. Y., a corporation of New York
Application September 16, 1933, Serial No. 689,693
Renewed November 2'7, 1936
1 Claim.
a modi?cation of the portion illustrated between
the lines c—c and d—-d of Fig. 1;
Fig. 3 is a side elevation more or less diagram
a tape or the like into electric impulses and trans
matically showing the embodiment shown in Fig.
1 associated With a projector for projecting
mitting such impulses to a receiving station there
again to be converted or translated into markings
on a tape.
Among the objects of the present invention, it
is aimed to provide an improved message trans
10 mitting system for translating the electric im
' pulses corresponding to a message into perfora
tions or the like markings on a tape associated
with means for projecting images of the markings
on the tape or images of the background or
15 outlines of the markings on the tape.
It is still another object of the present invention
to provide an improved message transmitting sys
tem including means for translating the markings
on a tape into electric impulses, electrically trans
20 mitting such electric impulses to a receiving sta
tion having means for translating such electric
impulses into tape markings by decomposing a
portion of the receiving tape either the struc
ture itself in the form of perforations or changing
~35 portions of the structure itself either by changing
its coating or its composition in the form of char~
images of the markings on the tape onto a screen;
Fig. 4 is an end elevation of the projector illus~
trated in Fig. 3;
Fig. 5 is an enlarged fragmental plan of a
scanning disc made according to one embodiment 10
of the present invention in association with a
piece of ticker tape to be scanned;
Fig. 6 is an end elevation of the structure illus
trated in Fig. 5;
Fig. '7 is an enlarged iragmental plan of a disc
at the receiving station in association with the
tape to be marked;
Fig. 8 is an end elevation of the structure illus
trated in Fig. 7;
Fig. 9 is an end elevation of another embodi- s
ment of the structure illustrated in Fig. 8;
Fig. 10 is a iragmental plan view of the struc—
ture illustrated in Fig. 9;
Fig. 11 is a fragmental plan view showing a
piece of tape having matter formed thereon in ‘
script which can be transmitted according to the
acter de?ning markings as for instance by a dis
present invention; and
tinguishing color when the tape itself constitutes
the ultimate message or by a distinguishing light
Fig. 12 is a transverse section of a piece of tape
provided with a coating sensitive to light or heat
to be marked according to one embodiment of so
:30 passing track when the tape is used as a slide or
?lm to impress an image of the characters on a
light beam ultimately to be reproduced on a
screen.
It is still another object of the present inven
3'7 tion to provide an improved means for electrically
perforating a tape in accordance with the message
transmitted.
‘
It is still another object of the present inven
tion to provide an improved means for electrically
~10 marking a tape in accordance with the message
transmitted.
These and other features, capabilities and ad
vantages of the invention will appear from the
r) subjoined detail description of speci?c embodi
'
(Cl. 178—6)
This invention relates to message transmitting
systems in general and more especially to message
transmitting systems for translating markings on
ments thereof illustrated in the accompanying
drawings in which
Figure 1 illustrates more or less diagrammati
cally a telegraph printer associated with a trans
50 mitting station and a receiving station according
to one embodiment of the present invention;
Fig. 1a illustrates more or less diagrammatically
a modi?cation of the portion illustrated between
the lines a—-a and b-—b of Fig. 1;
Fig. 2 illustrates more or less diagrammatically
.55
the present invention.
In the embodiment illustrated in Fig. 1, there
is shown a telegraph printer I for initially print
ing a message on the tape 2 in the well known
manner and from which the tape 2 is ordinarily
discharged as the message is printed. Preferably
as shown, the tape feed rollers 3 of the printer I
are held open and out of operation so that a con
tinuously operated tape drawing roller 4 may 40
without interference e?ectively draw the tape 2
across the path of the light rays produced by the
lamp 5.
The tape pulling roller 4 is preferably mounted
on a shaft drivingly connected to the shaft 6 of 4
the motor ‘I. The tape 2 is preferably maintained
in frictional tape drawing engagement with the
roller 4 by the spring pressed idler 8. From the
roller 4, the tape 2 passes onto the rewind reel 9
which is preferably drivingly connected by the
spring belt I0 with the roller 4. The light rays
from the lamp 5 are directed by the re?ector ll
through the condensing lenses I 2 and [3 up
wardly through the tape 2 onto the light sensi
2
2,113,582
tive mechanism M in the present instance con
sisting of a photo-electric cell.
The tape 2 in the present instance is guided
by the idlers or rollers i5 and i6 adjacent to the
ticker between which the tape 2 passes to and
over the idler or roller ll beyond the path of
the light rays from the lamp 5 and to maintain
the tape 2 in a plane parallel to and directly
below the scanning disc l8 mounted on the shaft
10 6. The scanning disc l8, see Figs. 5 and 6, is pro
vided with a plurality of chamfered openings i3
disposed in a row concentric to a shaft 6.
The
openings 19 have their diminished ends adjacent
the lower face of the disc l8, see Fig. 6. The
shaft 6 and consequently the disc I8 is rotated at
a suitable speed approximating twelve hundred
or eighteen hundred revolutions per minute.
The light sensitive device [4 is preferably as il
lustrated in Fig. 1 disposed directly above the
row of openings and the disc i8. Assuming the
tape to be formed of some suitable translucent
or transparent material, light rays will be inter
mittently projected by the lamp 5 through the
tape and then through the openings I9 onto the
25 light sensitive mechanism l4.
The condensing lenses l2 and I3 will be so dis
posed relative to the tape 2, disc l8 and light
sensitive mechanism l4 that only those light
rays will be passed to the light sensitive mech
30 anism I4 which are permitted to pass through
the openings IS.
The ink used by the printer I in the present
instance is preferably composed of a suitable
light interrupting substance, as a result of which
35 the light rays will be interrupted by the sections
of the characters 20 formed on the tape 2 and
thus interrupt the passage of light rays through
the openings IS.
The conductor 38 and thereby the ?lament 35
is preferably connected to the conductor 33. The
battery 40 in the present instance is preferably
connected to the conductors 39 and 34 by the con
ductors 4| and 42 respectively. The conductors
39 and 34 are in turn connected to the ?lament
43 of the tube 44 which is used as a balancing
tube when alternating current is the source of
electric current.
The plate 45 of this tube 44 is connected to the 10
primary winding 30 by the conductor 46 and the
grid 4"! of this tube is connected by the con.
ductor 48 with the rheostat 49 which is in turn
connected to a suitable source of current 50 by
the conductor 5| which source of current is in 15
turn connected to the conductor 39 by the con
cluctor 52. The rheostat 49, that is its contact
with the conductor 48, is set to impress a po
tential on the grid 41 of the tube 44- to produce
a plate current of the same value as that of the
plate current of the tube 28 which is determined
by the incoming signal.
From the foregoing, it will thus appear that
when a light ray is impinged upon the photo-elec
tric cell l4 a corresponding electric impulse
translation will be transmitted to the ampli?er
23 and in turn to the ampli?er 25 where the cur
rent established in the tube 26 will balance the
tube 44 to magnetically neutralize, by means of
center tap 3|, the primary winding 30.
On the
other hand, when a section of a character or
marking 20 interrupts the passage of a light
beam through the opening or series of openings
i9, this interruption will prevent the transmis
sion of the electric signal produced by photo 35
electric cell !4 and the ampli?ers 23 and 25 in
which case the current in the tube 28 will be cor
respondingly interrupted and its magnetic neu
The light sensitive mechanism l4 will coop
40 erate with the disc l8 to transmit the light rays
permitted to pass through the openings [9 as
anism now to be described.
tralizing effect on the other half of the winding
33 unbalanced. This permits the current flow 40
ing through the tube 44 and lower half of the
primary winding 30 in turn to induce a high ten
sion current in the secondary winding 53.
The secondary winding 53 is preferably pro
vided with a safety gap as shown, the contacts
54 and 55 of which are connected to the ends of
the winding 53 by the conductors 56 and 51 re
spectively. One end of the winding 53 is further
connected by the conductor 58 to the electrode
59. The other end of the winding 53 is connected
by the conductor 66 with the other electrode 6|,
see particularly Fig. 8. Across the electrodes 6|
in the present instance the tape to be marked is
drawn, to wit the tape 62 passing from the supply
roll 63 over the feed roller 64 to and beyond the
discharge openings 65 formed in the housing 66.
The tape 62 is preferably maintained in feeding
engagement with the feed roller 64 by the pressure
roller 61.
This feed roller 64 is drivingly connected to 60
the motor 68, its shaft being provided with the
beveled gear 69 in mesh with the beveled gear ‘III
on the shaft ‘II, which shaft ll has the worm
The tube 23 preferably has its plate connected
by the conductor 29 with the primary winding
wheel 12 ?xed thereon in mesh with a worm not
shown on the shaft 13 of the motor 68.
30 of a suitable transformer.
The motors 68 and l are preferably synchro
nous motors in order to facilitate rotating the
scanning disc l8 and the reproducing disc 14 at
the same speed. In order to facilitate centering
the printing message, the ?eld frame of the motor
is adjustable having the gear teeth 15 formed
thereon in mesh with the screw 16 connected to
the bracket 11.
The disc 14, see Figs. 7 and 8, is preferably
determined by the interruption effected by sec?
tions of the characters 28 to control the marking
device at the receiving station in the manner
45 now to be described.
As an instance, the light sensitive mechanism
I4 is connected by the conductors 2i and 22 with
the ampli?er 23 at the sending station, which
ampli?er 23 is in turn connected by the conduc
50 tor 24 with the ampli?er 25 at the receiving sta
tion. The ampli?er 23 is grounded by the con
ductor 26 and the ampli?er 25 being grounded
by the conductor 21. For long distances or
where otherwise necessary, it is obvious that the
55 electric impulses produced by the light sensi
tive mechanism l4 may take the form of a modu
lated carrier wave and associated with the am
pli?er 23 and line 24.
The ampli?er 25 in the present instance which
60 may be a plurality of tubes, has its last tube, as
an instance the tube 28 connected with the trans
former or‘ high tension spark producing mech
A middle tap of
the winding 30 is connected by the conductor 3|
with a source of alternating current 32 which lat
ter is connected by the conductor 33 with the con
70 ductor 34' of the ?lament 35 of the tube 28.
The grid 36 of the tube 28 is in the present in
stance connected by the conductor 31 with the
preceding tubes in the ampli?er and similarly
the ?lament 35 is connected by the conductor
38 with the preceding tubes in the amplifier.
composed of suitable non-conductive material 15
2,113,582
and has mounted thereon a plurality of pins or
styluses ‘I0 composed of electric current conduc
tive material. The styluses ‘I8 in number equal
the number of openings I9 in the disc I8. Fur
thermore, they are disposed concentric to the
shaft ‘I3 of the disc 14 and are arranged to be
rotated successively into alignment with the two
electrodes 59 and GI, see Figs. 7 and 8. The ends
of the pins ‘I8 are preferably pointed as illus
10 trated in Fig. 8. One end of each stylus ‘I8, the
upper one looking at Fig. 8 passes to the lower
face of the electrode 59 and the other end of each
stylus 18, the lower end looking at Fig. 8 passes
across the upper face of the tape 62 moving across
15 the upper face of the electrode BI.
From the foregoing, it will thus appear that
if a stylus ‘I8 registers with the opposing elec
trodes 59 and 6| at the time that an opening I9
has its light shut off by a section of a character
20 20 a high tension spark will be caused to jump
from the electrode 59 through the stylus 18 to
the electrode BI, producing a perforation in the
tape 62 during this process.
‘
It will also appear from the foregoing that if
25 the discs I8 and ‘I4 are rotated at a speed suffi
ciently high a number of openings I9 will pass
over a section 20 of a marking on the tape 2 before
it crosses the path of the openings I9 as a result
of which a succession of perforations will be pro
duced in the tape 62 corresponding to the suc
cession of openings scanning the tape 2 which
have registered with the section of a marking 20
that has been scanned, resulting finally in a series
of perforations in the tape 62 corresponding to
- the marking 20 on the tape 2.
If the tape 62 is composed of suitable opaque
material, the perforations produced in the same
by the electrodes 59 and 60 corresponding to the
message transmitted may of course with facility
cooperate with the projector in Fig. 3, the receiv
ing station being equipped with a perforator such
as illustrated in Fig. 8 for mounting in the casing
66 and the tape 62 as it passes from the orifice
65, see Fig. 1, is guided across the light aperture
formed on the extension ‘I9 of the lamp housing
80, the tape 62 being drawn across said extension
19 by the rewind reel 8| journaled in the bracket
02 and drivingly connected to the motor 93 by a
belt preferably the spring belt 84.
The lamp housing 80 is preferably provided with
a lamp, the light rays of which are directed to
pass up through the perforations formed in the
tape 62 to be received by the objective lens unit
mounted in the housing 85 and directed by such
objective lens unit onto the mirror 06 to be in
turn directed onto the screen 01, in which case
there will appear on the screen 81 illuminated
characters corresponding to the perforations
formed in the tape 62, against a dark background.
In place of the conductor 24, it is of course
60
obvious that the ampli?er 23 may be constructed
to transmit or broadcast radio frequency carrier
waves as illustrated in Fig. 1a by the broadcast
ing unit 08 and that the receiving station or am
pli?er 25 may be equipped with a receiving aerial
89 or the like and the ampli?er 25 tuned to receive
such radio frequency carrier waves.
It is also obvious that an interrupted D. C.
current may be used in place of the alternating
current source 32, see Fig. 2, in which the inter
rupted current source 90 is connected by theicon
ductor 9| with one of the terminals of the ?la
ment 35 and with the balancing rheostat 92 and
that the other terminal of the ?lament 35 is in
75 turn connected to the battery 93 by the conductor
3
94, which battery 93 is in turn connected to the
conductor 9| by the conductor 95. In the pres
ent instance, the rheostat 92 is connected by the
conductor 96 with one end of the primary wind
ing 30, see Fig. 1, and the conductor 91 is con
nected to the other end of the primary winding
30 of the transformer see Fig. 1, while the con
ductor 9 IE connects the middle tap of the winding
30 with the interrupting current source 90.
It is of course obvious that the markings on 10
the tape 2 may be formed manually in script as
illustrated in Fig. 11 instead of by a printer, such
as the printer I.
It is of course also obvious that instead of
perforations in the tape 62, the receiving tape, 15
as for instance the tape 62a may have opaque
characters seared on the same or else an opaque
coating, portions of which are decomposed to
form transparent characters if the main body por
tion of the tape 52 is composed of a transparent or 20
translucent substance, such for instance as
cellophane tape or the like. If the tape is pro
vided with a coating, such as citric acid or potas
sium iodide the coating can be readily broken
down by a spark to form a seared or scarred 25
mark or line. For this purpose, it is obvious
that the spark can be of much less intensity than
the high tension spark produced by the embodi
ment illustrated in Fig. 8.
The tape 62a in the present instance, see Fig. 9, 30
preferably is caused to move across an insulated
platform or abutment 98 which may be composed
of rubber or the like. This platform 98, see Fig.
9, is preferably disposed directly beneath the
insulated block 99 containing the two electrodes
I00 and IN which are substituted for the elec
trodes 59 and 6| of the embodiment illustrated
in Fig. 8 and connected to the conductor, such
for instance as the conductors 58 and 60 re
spectively of a wiring arrangement such as illus
trated in Fig. 1.
With the embodiment illustrated in Fig. 9,
there is used in place of the disc 14 illustrated in
Figs. '7 and 8, a disc ‘I4a which may conveniently
consist of an insulated disc portion I02 through 45
which pass a plurality of contact members I03.
The contact members correspond in number and
geometric arrangement to the openings I9 and
are used in the present instance instead of the
pins ‘I8 of the embodiment illustrated in Figs. '7
and 8. The disc I02 has secured on one face
thereof an annular insulating ring I04 and ex
tending from the other face thereof an annular
insulating collar I05.
The annular members I04
and I05 cooperate with the contact pieces I03, 55
each contact piece I03 consisting of two wires, to
wit the wires I06 and I01 which extend through
the annular member I04 with their free ends ex
posed at the outer surface of the annular member
I04 and spaced apart to register with the free 60
ends of the electrodes I00 and NI.
These wires I06 and I0‘! also extend through
the disc I02 and are secured to the opposite faces
of the annular member I05 with their free ends
terminating at the adjacent end of the annular 65
member I05 spaced apart to permit the produc
tion or jumping of a high tension spark from the
wire I06 to the other wire I01 around the free
end of the annular partition I05. The free end
of the annular partition I05 is disposed to travel
adjacent to and across the portion of the tape
I52a passing over the block 98 in order to permit
the successive contact pieces I03 to register with
the electrodes I00 and IM in turn to cause the
production of a spark around the free edge of the
4,
2,113,682
annular partition I05 when‘ the opening IQ of the
disc l8 geometrically corresponding to the contact
piece I03 has no light rays or light beam passing
therethrough.
The disc 142L as aforesaid cooperates with the
disc 18 in all respects in practically the same
manner as the disc 14 of the embodiment illus
trated in Fig. 8 cooperates with the disc l8, ex
cept as above pointed out.
From the foregoing, it will thus be seen that
10
the tape 2 composed of translucent or trans
parent material with its light interrupting mark
ings 2i] constitutes a master through which light
is directed as this master is drawn across the
15 path of movement of the openings IS in the
scanning disc l8 whereby successive lineal areas
of the tape 2 will be scanned in turn to effect the
transmission of cones of light on the light sensi
tive mechanism I4 in turn to generate light im
20 pulses which will be electrically transmitted to
an are generating mechanism produced by the
transformer including the windings 30 and 53
and the current interrupter consisting of the
tube 28 and winding 30 so that arcs will be gen
erated to correspond with light interruptions
when an opening or openings l9 register with a
section or sections of the markings 20.
It would also appear that at the receiving sta
tion, there is provided a tape, such as the tape
30 62, which may according to one embodiment be
composed of opaque material, see Fig. 8, when the
arcs generated by the electrodes 59, 6| and the
contact stylus 18 will form perforations in the
tape 62 corresponding to the markings on the
35 tape 2.
the electrode I01, its passage through the potas
sium iodide coating liberates the free iodine and
gives a very sharply de?ned point or line as long
as and only When the current passes with a high
degree of contrast. It is obvious that any suit
able chemical combination can be used without
departing from the spirit of the invention such
as one having'opacity and upon electrolytic de
composition produces white lines or points. The
high tension current in the form of the arc makes 10
mechanical contact unnecessary.
It is obvious that various changes and modi?
cations may be made to the details of construc
tion without departing from the general spirit
of the invention as set forth in the appended
claim.
I claim:
»
-
In a message transmitting system, the combi
nation of a transmitting station and a receiv
ing station, each station having a narrow record
receiving strip, a strip advancer for continuously
advancing the strip and a synchronous motor
drivingly connected with said strip advancer; the
strip at the transmitting station being translucent
and having light interrupting markings thereon ‘
and the strip at the receiving station being
opaque; the markings on the tape at the trans
mitting station reading longitudinally of the strip
while being advanced and a scanning disc driv
ingly connected with the motor of said transmit
ting station, said scanning disc having a circular
row of a predetermined number of openings con—
centric with its axis of rotation and drivingly con
nected with the motor of said transmitting sta
tion; the receiving station including a trans 35
According to the embodiment illustrated in
Fig. 9, on the other hand, the tape 62"L may as an
instance be composed of translucent material
and have formed thereon an opaque coating
which will break down or chemically decompose
ing pins equal in number to the number of open
ings in the disc of said transmitting station and
with the formation of an arc to expose the trans
arranged in a circle concentric with its center of
lucent body portion of the tape to permit the
passage of light therethrough to produce a lumi
nous picture against a dark background of the
as c1 message on a screen, such as the screen 81.
On
the other hand, the tape 62*1 according to the
embodiment illustrated in Fig. 9, when the arc
does not pierce the tape, may have a light and/or
heat sensitive surface coating which will be
50 seared by, or exposed to, the arc to form a re
production cf the markings on the tape 2.
The tape 62a may also have a chemically treated
surface that under the in?uence of an electric
current passing through it decomposes leaving
one of its elements to provide the opaque or trans
parent areas at the exact‘ spot or point as deter
mined by the scanning disc l8. Potassium iodide
for instance in its combined form is water clear
and when the current passes through it as from
60 electrode I05 to the coating on the tape 62“ to
former having a pair of ?xed electrodes, a safety
gap connected in parallel with said ?xed elec
trodes, a disc having a circular row of arc form
rotation, said pins being solid electrodes and pre
senting pointed ends toward said tape, the strip
advancer of said receiving station advancing its
strip between said pair of electrodes to cross the 45
path of movement of said pins in a direction
radial to said disc, the motor at the receiving
station being drivingly connected with the disc
at said receiving station to advance said pins
across the strip at said receiving station into 50
spark gap forming positions with said electrodes
to thereby produce perforations simulating a re
production on said strip while being advanced
of the message transmitted; an electric impulse
generator operatively associated with the light
sensitive mechanism, and means for electrically
transmitting to said transformer the electric im
pulses generated by said generator.
AUGUST D. EITZEN.
60
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