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Jan. 7, .1947.
2,413,849
J. A. "sPENcER
PRINTER STORAGE SYSTEM
Filed Sept. 30. 1944
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ATTORNEY
Patented Jan. 7, 1947
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2,413,849
UNITED STATES PATENT OFFICE
2,413,849
PRINTER sroimon SYSTEM
James A. Spencer, Teaneck, N. J., assignor to
Radio Corporation of America, a corporation
of Delaware
Application September 30, 1944,, Serial No. 556,614
6 Claims.
1
(Cl. 1'2'8—1'7.5)
2
This invention relates to polar relay storage
terminal of‘this coil‘ being connected to the‘ posi
receiving systems for telegraph signals and is a
division of my application ?led December 4', 1943,
Serial. No. 512,932;
In. my Patents 2,274,103, February 24, 15342, and
tive and negative terminals of the source of sup
devised. as an improvement on those systems.
a printer may be found. in my said Patent
ply‘through appropriate resistances. Segments 2
and‘ 3 are connected through the coils of- polar
relays 32 and 33, respectively, to the positive and
negative terminals through appropriate re
2,327,075, August 17, 1943, I disclosed systems for
sistances. The tongues of relays 3|, 32 and 33': are
storing telegraph signals with relays of the non
connected. respectively through the ?rst, second
polar type and while these have been successful,
and: third relays of the printer as to ground... The
a comparatively large number of relays is used
and each relay controls a comparatively large 10 printer withgits relays has been indicated only
diagrammatically herein, but a description of. such:
number of contacts. This invention has been
An object of the invention is to provide signal
2,274,103.
Segments 4, 5., G and ‘l of segmented ring. 29'
storage witha reduced number of relays and relay
15 are. connected respectively through the coils of
contacts.
the fourth, ?fth, sixth and seventh relays of the
Another object is to provide signal storage with
printer 3d‘ to ground.
polar type relays for. reducing the number of re~
Local function ring 35 is connected to the posi
lays, as well as theynumber of contacts’ controlled
tive terminal and this ringv is connected by brush
thereby.
Other objectsv of the invention. will appear in 20 3% with the fourteen segments in succession of
segmented ring 31.. In this ring, segments I to l
the following description, reference being had to
are not connected‘ to any electrical circuits, but
the drawing, in which the single ?gure of the
certain of the “a” segments are thus connected.
drawing is av circuit diagram of the receiving sys
The brush 36, of course, is mechanically con
tem.
Referringtothe drawing, the receiving system 25 nected to, or otherwise constructed to rotate in
is shown as adapted for seven-unit code signals,
but this isby way of example and it could be used
for a code system of ?ve or any other number
unison with the brush 3d, so that when. the. latter
is on an “a” segment of a certain reference‘ char
acter, the former is on an “a” segment of a simi
lar reference character.
of units.
Segment id of ring 37' is connected to the so
The incoming line 25 is connected to one ter 30
called' eighth pulse magnet of printer 313', its func
minal of the coils‘ of polar relay 2?? and the other
tion, as. described in my said patent, being to start
terminal of this relay is connected to ground,
the operation of the printer after selection has
whichmay be-consideredas the negative terminal
been made by selection and operation of three
of the source ofv supply. One contact of this polar
of the. signal relays therein.
relay is also connected to ground through an
Segment 4a of segmented ring 31: is connected to
appropriate resistance and the other terminal is
the upper contact of relay 3‘! and segments to
connected through a resistance to the positive
and 6a are connected respectively to similar con
terminal. The tongue of relay 2'! is connected to
tacts of relays 32 and 33. The lower contacts on
solid signal ring 26, which is connected to the
these three relays are blank.
contacts of the segmented ring 29 by brush 36 in
The’operation of my inventionwill now be de~
synchronism and phase with the brushes at the
scribed:
transmitter. The segmented ring 29 has four
Let’ it be assumed that the letter Y is to be
teen contacts, so that this brush sweeps over two
transmitted. This, in accordance with the usual
of the contacts for each one contact at the trans
mitter, which may, for example, be the one dis 45 seven-unit code, consists of marl: signals in the
?rst, third and sixth time positions and space
closed in my said parent application. Reference
signals. in the second, fourth, ?fth and seventh
character a has been appended to the ?gures
time positions.
designating: the segments. These “a” segments
The current received over the incoming line 25
are not, shown connected to electrical circuits, as
they. have no particular function in the operation 50 for the ?rst signal unit, suitably ampli?ed when
desired,.energizes the receiving relay 2"! so that
of this improvement other than to indicate the
its: tongue‘is thrown againstthe positive contact.
relative time of connection of relays at the re
Current; then: flows from the positive terminal
ceiving station, as will later become apparent.
through‘ this‘ tongue, solid ring 28, brush ?dseg
Segment No. l of ring 29'is connected to one
terminal of- thecoill offpolar. relay 31,. the other. 55. mentr. No. II- and. through. the. coilofl relay; 31. to.
2,413,849
it
U
the negative terminal. The tongue of this relay
signals for the second, fourth, ?fth and seventh
is thrown to its upper contact, where it remains
banked. The ?rst received signal is thus stored.
When brushes 30 and 36 reach contact la on
segmented rings 29 and 37 nothing happens at
ring 29, but at ring 37 current flows from the
positive terminal through the brush and segment
units of the signal through non-operation of se
lector relays R2, R4, R5 and R1.
When the brushes leave segments No. 1 and
engage segments No. I, a new combination for
the next letter is set up, but this will not be de
scribed, as it will be sufficient to trace through
la'to ground through eighth pulse relay R8. This
the operation for the letter Y.
>
starts the printing operation of the previous com
When he brushes reach segments la nothing
bination, which need not be described.
10 happens at ring 29, but at ring 31 current ?ows
When the brushes ?rst engage segments No. 2,
from the positive terminal through ring 35, brush
a space signal is received and the current throws
35, segment la and the eighth pulse relay R8
the tongue of relay 27 to the ground or minus
to ground. This starts the printing operation and
contact and current ?ows from the positive ter
letter Y will be printed from the selection made,
minal through the coil of polar relay 32, segment
as already described. Due to storage of the ?rst,
2, brush 3i) and ring 28 to ground. This throws
second and third signal of all characters, ample
the tongue of polar relay 32 to its blank contact.
time is given for the printing operation, which
When the brushes reach segments 20. nothing
can be completed before the receipt of the fourth
happens.
impulse of the next character.
When segments No. 3 are reached, the current 20
From the description given, it will be apparent
?ow throws the tongue of relay 21 to the positive
how the signals are stored by the polar relays
contact. Current then ?ows through ring 28,
so that the signal units can be received, while
brush 3!], segment 3 and the coil of relay 33 t0 the’
permitting the operation of the printer. The
negative terminal, which throws its tongue to its
operation for any succeeding characters will now
upper contact.
25 be made clear and further description is unneces
When segments to are reached nothing hap
sary.
pens.
Various modi?cations may be made in my im
When segments ii are ?rst engaged, negative
provement without departing from the spirit of
current flows from the transmitter station and
the invention.
the tongue of relay 2'! will be thrown to the
Having described my invention, what I claim is:
ground contact by this space signal, This will
1. In a multi-unit signaling system,‘ an in
not energize selector relay R4 of the printer 34
coming line, a distributor having a ?rst segment
by engagement of the brush 3%] with the fourth
for each signal unit of the code character and a
segment, because both terminals are now ground
second segment following each of a predetermined
ed, This will cause a space selection at the .; number of said ?rst segments, means for con
printer.
meeting said ?rst segments of said distributor in
When segments ea are reached, the stored sig
succession to said line, a relay having a switch
nal of the ?rst unit of the letter Y causes the
tongue and a single live contact for storing each
?rst selector magnet at the printer to operate,
of the signal units of a code character from the
because current will ?ow from the positive ter
beginning up to a predetermined signal unit
minal through ring 35, brush 36, segment 4a,
thereof, the coil of each of said relays being
upper contact of polar relay 3| and selector
connected to one of said ?rst segments of said
relay Rl to ground.
distributor and the live contact thereof connected
When the brushes reach No. 5 segments, the
to one of said second segments, a printer having
incoming space current throws the tongue of
a selector magnet for each signal unit of the
'relay 2'! to the ground contact and selector relay
code character, means for connecting each of the
R5 will not be operated.
selector magnets for the stored signal units of a
When the segments 5a of rings 29 and 3'! are
code character to a switch tongue of one of said
reached, no current ?ows from ring 35, brush
relays and each of the selector magnets for the
36 and segment 5a of ring 31, because the tongue '
of relay 32 is engaging its blank contact through
the storing of the second unit of the signal, which
is a space. Therefore, the selector relay R2 is
not operated.
When the brushes reach the 6th segments,
positive current flows through the coil of relay
2'! and this throws the tongue of this relay against
its positive contact, which energizes selector re
lay R6.
When segments to are engaged by the brushes,
nothing happens at segmented ring 29, but at
segmented ring 3? current ?ows from the positive
terminal through ring 35, brush 36, segment 6a,
upper contact of relay 33 to selector relay R3,
which is energized.
When segments No. l are reached, a space sig
nal will be received. This will throw the tongue
of relay 2? to ground and selector relay R‘! will
not be energized because both its terminals are
at ground potential.
When the brushes reach segments la, nothing
happens at either of the segmented rings, but the
printer now has stored mark signals for the ?rst,
third and sixth units of the signal through oper
ation of selector relays Rl, R3 and R6 and space
unstored signal units thereof to a segment of
said distributor, means for supplying potential to
said second segments in succession after the
selector magnet for said predetermined signal
unit has been connected through a'segment of
4 the distributor to said line and means for start
ing the printing of the character selected by said
magnets before the selector magnet for said pre
determined signal unit of the next succeeding
code character has been connected through its
60 distributor segment to the line.
2. In a multi-unit signaling system, an incom
ing line, a distributor having a ?rst segment for
each signal unit of the code character and a sec
ond segment following each of a predetermined
number of said ?rst segments, means for connect
ing said ?rst segments of said distributor in suc
cession to said line, a relay having a switch tongue
and a single live contact for storing each of the
signal units of a code character from the be
ginning up to a predetermined signal unit there
of, the coil of each of said relays being connected
to one of said ?rst segments of said distributor, a
printer having a selector magnet for each signal
unit of the code character, means for connecting
75 each of the selector magnets for the stored signal
2,413,849
units of a code character to a switch tongue of
one of said relays and each of the selector mag
nets for the unstored signal units thereof to a seg
ment of said distributor, means for supplying po
tential to said second segments alternatively with
the connection to line of the selector magnets for
said predetermined and subsequent signal units
and means for starting the printing of the char
6
and means for starting the printing of the char
acter selected by said magnets before the selector
magnet for said predetermined signal unit of the
next succeeding code character has been con
nected through its distributor segment to the line.
5. In a multi-unit signaling system, an incom
ing line, a distributor having a ?rst segment for
each signal unit of the code character and a sec
ond segment following each of a predetermined
acter selected by said magnets before the selector
magnet for said predetermined signal unit of the 10 number of said ?rst segments, means for connect
ing said ?rst segments of said distributor in suc
next succeeding code character has been con
cession to said line, a polar relay having a switch
nected through its distributor segment to the in
tongue and a single live contact for storing each
coming line.
of the signal units of a code character from the
3. In a multi-unit signaling system, an incom
beginning
up to a predetermined signal unit
ing line, a distributor havinga ?rst segment for
thereof, the coil of each of said polar relays being
each signal unit of the code character and a sec
connected to one of said ?rst segments of said
ond segment following each of a predetermined
distributor,
a printer having a selector magnet
number of said ?rst segments, means for con
for each signal unit of the code character, means
necting said ?rst segments of said distributor in
for connecting each of the selector magnets for
succession to said line, a polar relay having a 20
the stored signal units of a code character to a
switch tongue and a single live contact for ston
switch tongue of one of said polar relays and each
ing'each of the signal units of a code character
of the selector magnets for the unstored signal
from the beginning up to a predetermined signal
units thereof to a segment of said distributor,
unit thereof, the coil of each of said polar relays
being connected to one of said ?rst segments of 25 means for banking the switch tongues cf said
polar relays on their contacts when moved there
said distributor, a printer having a selector ma g
against, means for supplying potential to said
net for each signal unit of the code character,
second
segments in succession after the selector
means for connecting each of the selector mag
magnet for said predetermined signal unit has
nets for the stored signal units of a code charac»
been connected through a segment of the dis
tributor to said line and means for starting the
and each of the selector magnets for the unstored
printing of the character selected by said mag
signal units thereof to a segment of said distribu
nets before the selector magnet vfor said prede
tor, means for supplying potential to said second
termined signal unit of the next succeeding code
segments after the selector magnet for said pre
character has been connected through its dis
determined signal unit has been connected
tributor segment to the line.
through a segment of the distributor to said line
6. In a multi-unit signaling system, an incom
and means for starting the printing of the char
ing line, a distributor having a ?rst segment for
acter selected by said magnets before the selector
each signal unit of the code character and a sec
magnet for said predetermined signa1 unit. of the
neXt succeeding code character has been con 40 ond segment following each of a predetermined
number of said ?rst segments, means for connect
nected through its distributor segment to the
ing said ?rst segments of said distributor in suc
ter to a switch tongue of one of said polar relays
line.
4. In a multi-unit signaling system, an incom
cession to said line, a relay having a switch tongue
and a single live contact for storing each of the
ing line, a distributor having a ?rst segment for
5 signal units of a code character from the be
each signal unit of the code character and a sec
ginning up to a predetermined signal unit there
ond segment following each of a predetermined
of, the coil of each of said relays being connected
number of said ?rst segments, means for connect
to one of said ?rst segments of said distributor, a
ing said ?rst segments of said distributor in suc
printer
having a selector magnet for each signal
cession to said line, a polar relay having a switch
unit of the code character, means for connecting
tongue and a single live contact for storing each
each of the selector magnets for the stored signal
of the signal units of a code character from the
units of a code character to a switch tongue of
beginning up to a predetermined signal unit
one of said relays'and each of the selector mag
thereof, the coil of each of said polar relays being
'r1ets for the unstored signal units thereof to a
connected to one of said ?rst segments of said
segment of said distributor, means for banking
distributor, a printer having a selector magnet
the switch tongues of said relays on their contacts
for each signal unit of the code character, means
when moved thereagainst, means for supplying"
for connecting each of the selector magnets for
potential to said second segments alternatively
the stored signal units of a code character to a
with the connection to line of the selector mag
. switch tongue of one of said polar relays and each
of the selector magnets for the unstored signal
units thereof to a segment of said distributor,
means for banking the switch tongues of said
polar relays on their contacts when moved there
against, means for supplying potential to said
second segments after the selector magnet for said
predetermined signal unit has been connected
through a segment of the distributor to said line
nets for said predetermined and subsequent sig
nal units and means for starting the printing‘ of
the character selected by said magnets before the
selector magnet for said predetermined signal
unit of the next succeeding code character has
been connected through its distributor segment to
the incoming line.
JAMES A. SPENCER.
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