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Патент USA US2404339

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July 16, 1946.
‘
W.IJ. ZENNER
2,404,339
PRINTING TELEGRAPH APPARATUS
Filed Feb. 28, 1945
2 Sheets-Sheet_l
_
‘
INVENTOR
I
WALTER .1 ZENNER
z‘ ' Wéw '
ATTORNEY
July 16, 1946.
I
w. J. ZENNER
' 2,404,339
PRINTING- TELEGRAPH APPARATUS
Filed Feb. 28, 1945
2 Sheets-Sheet 2
INVENTOR
WALTER J. ZENNER
2,404,339
Patented July 16, 1946
UNITED STATES‘ ' PATENT OFFICE;
,
2,404,339
‘
'
PRINTING TELEGRAPH‘ APPARATUS
Walter J. Zenner,‘ Des Plaines, Ill-., assignor t0
Teletype, Corporation, Chicago, 111., a corpora- '
tion of Delaware
Application February 28, 1945,»Serial No. 580,154;
11 Claims.
(Cl. 178,-:17)
2
1
This invention pertains to printing telegraph
unit which is designated generally .by the nu
apparatus and more particularly to transmitter
control mechanism.
The primary object of the present invention
is to provide a device for automatically?arresb
meral ll receives the tape l2 from a tape per
forating apparatus l3, many types of which are
well known in the art. ,The tape sensing unit
and transmitting unit.v are describedonly to an
extent‘ necessary to understand the present in;
vention and may be understood moreyfullyv by
referring to Bulletin 141, issued. in March, 1942,
ing transmission of signals fromatransmitter
distributor upon the opening of the signal line cir
cuit.
'
Another object of the invention is to provide
by the Teletype‘ Corporation, Chicago, Illinois,
a “break-lock” mechanism which is effective upon
wherein they are described substantially.
the opening or “breaking” of the signal linevcir
cult to arrest transmission of code signals-from
the transmitter distributor apparatus.
.
,
.The tape l2 passes 'over' a guide roller l4,
moves‘ downwardly andvun’der a- taut-tape roller
'
Speci?cally, the invention is applicable to com-v
municating apparatus of thecombinationsende
ing-receiving type, which is designed for inter
changing messages between two or more points,
and which consists of a tape transmitting unit
and a combination printer-reperforator unit“ In
handling telegraph ‘communications it sometimes
becomes necessary for the operator at the receiv
l6 which will be mentioned later, and forms in a
loop'and passes overia' guide roller II which. is in
15 a horizontal plane with the previouslymenti'oned
. guide‘ roller‘v M.’ The taut-itape roller [6 iss'up
ported in two slotted guides 18 and hasv an; out-.7
wardly extending'arm t9 whichaco'ntrols' an elec
trical contact pair 2|, as will be hereinafter de
20 scribed. The tape I2 then passes over a sprockl
et-wheel 22' which is fastened securely to a shaft
ing station to communicate with they operator at
the sending station, and it is often very impor
tant that the receiving operator be enabled to in
terrupt the operation of the transmitting appa
ratus. This interruption by the receiving oper
23“ and whichhas'teeth thereon to engage inthe .
perforated feed holes. in they tape l2 and :thus.
feed the tape through the sensing ‘mechanism.
25 The‘ shaft 23 has a ratchet‘ 24 secured to one end
‘ thereof by means of which the tapefeedopera
ator is known in telegraphy as “‘br'eaking”‘or op
tion is effected, aswill‘ be later explained.
erating “break-in” signals.
,
Immediately after ‘the tape [2‘ passes‘ from the
In the arrangement according to the‘present
sprocket 22. it passes‘ over a‘ set of ?ve contact
invention, a perforated tape is prepared upon a 30 levers» 26 each of which has‘atape sensing pin
reperfor'ator, after which the tape‘ is directed‘ to
21 extending upwardly from its forward end.
a tape transmitter distributor, from which the‘
‘The tape‘ sensing pins 21 are adapted under cer
message perforated in-the‘tape is transmitted over
tain operating conditions .to' probe upwardly to'
the signal line‘ to the remotely located printer. I
If the‘ receiving operator ‘is desirous of interrupt;
sense the tape in order to determine whether the
35 particular code signal being sensed is comprised‘
ing this‘ transmission; he will open‘ or “break” , of ‘marking or spacing. impulses, in a manner well
the line, so that a break-lock‘ mechanism in said
known in the art. The contact levers 2B are piv
transmitter will be operated to stop transmission
oted on a shaft 28, each having leftwardlyex-v
and to simultaneously close an alarm circuit,‘
tending arms 29 and downwardly extending arms
whereby the sending operator is apprised of the 40 3|. Each of the contact levers 26 has an indi
interruption so that he can thereby prepare his
vidual‘ spring 32- which is connected to the left
apparatus for reception of the urgent message‘,
wardly extending arm 29 and‘ tends to’ rotate the
and thereafter prepare hismachine for retrans
mission of the received message, the interrupted
message, or any other intelligence.
I
.
A more complete understanding‘lof. the-fore
going and otherobjects and’ features-‘of thepr'es
contact levers 26 in a counterclockwise direction
about the pivot shaft 28, as viewed in Fig.1.
45 Each of the leftwardly extending arms 29 ofthe
contact levers 26 has j an open ended slot 33
formed at its extremity.
ent invention may be‘ had from the following? de
scription when taken‘v in‘ conjunction", withthe'
accompanyingdrawings-in‘ which '
.Fig. 1- is-a schematic arrangement of onev em'->
bodiment of the presentinvention; land ‘
Fig. 2 is‘ aschematic arrangement of a>modi?'ed*
f mm of vthe invention.
Having reference to‘ Fig. 1,. the ttape'sensinga.
Positioned approximately below the shaft 28 is J
a contact lever ball 34 which is immediatelyto the
50
right of the downwardly extending arms3l vofrthe
contact levers~25 and extends across all; of; the
arms 3|.
Thebail 34, mounted pivotally'honha
pivot shaft 36, has a downwardly extending’ lug 31.; .
Also mounted pivotally on the shaft 28 is, a
55 feed lever 38 which'has a leftwardlyv extending‘
2,404,339
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4
arm 39 and a downwardly extending arm 4|. A
transmitter operating lever ‘I6 pivotally mounted
1 spring 42 is connected to the arm 39 and tends to ‘
on a stud TI. The opposite end of the trans
mitting operating lever ‘I6 has an upwardly ex
tending portion ‘I8 which has an adjusting screw
pivot the feed lever 38 in a counterclockwise di
rection about shaft 28, as viewed in Fig. 1. The
at its rightward extremity, which has a spring
19 passing therethrough. The adjusting screw
‘I9 is immediately adjacent to the downwardly
44 connected 'toba downwardly ‘extending lug
extending arm 31 of the contact lever bail 34,
‘ feed lever 38 has a feed pawl 43 mounted pivotally
previously described, and'cooperates v‘therewith ‘
thereon and which tends to pivot- the feed pawl
ina
manner to be explained.
in a clockwise direction.
The feed pawl 43 is situated adjacent to the" 10 'The various parts which have been described
above areall well known equipment and are sub
ratchet wheel 24 and cooperates therewith during ,7
stantially described in the above-mentioned bul
certain operating conditions to cause the tape I2 1
to be fed forwardly. The bail 34, described pre-v fv ‘ letin issued'by' the Teletype Corporation. How
ever, it isfneces'sary to describe them herein inas
viously as extending across the downwardly ex-'
much 'as‘the'y form part of the present invention,
tending‘ arm 3| of the‘ contact levers 26, also
extends across the downwardly extending 531111174‘ . ;
. as will now be'set forth.
‘To. achieve the objects of the present invention
of the feed lever 38.
Situated immediately to the left of the slots 33
I ' there are also mounted on shaft 58 timing cams
‘ at the extremities of the rearwardly extending
BI and 82 which, upon the occurrence of a break
arms 29. of theTcontact levers 26 are a seriesof. 20 in the line,‘ for example, upon'the opening of a
switch I39 at the remote station I38, control-the
l?ve contact .arms‘46, one individual to each ,con-J
stopping of‘the transmitter in such a manner ‘to
tact arm 26, which are mounted’ pivotally on an
electrical conductor shaft 4'I.v ‘The right-hand
insure the completion of the code signal combina
ends of the contact arms 46 which cooperate with
the slots 33: are insulated, whereas the remaining
portions'of the contact arms are electrical con
tionbeing then transmitted; cooperatively as!
ductors. The opposite ends of the ‘contact arms ,
sociated withv cam 8|‘ is one end of a lever 83‘
pivotally mounted on a pivot 84. Lever '83is nor;
mally biased in a clockwise, direction by a spring
46, remotefrom'theinsulated portion cooperat
86tc maintain its left'end' (Fig. 1) in contactual
ing with the slots 33, form a movable tongue to
relation, with the periphery of cam 8|. The op
cooperate with an upper electrical spring contact 30 posite end'of‘ lever 83 provides’ an armature for
48 vor a’ lower electrical spring contact '49. Thus,1
depending upon the position of the contact arms »
a magnet 81 suitably mounted in the transmitter
apparatus.
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46 an-electricalcontact will be made with either.
Lever 83 is provided, near its left end, with a
the 'upper spring contact 48 or the lower spring. * slot 88 which'accommodates slidablvtherein a
contact 49, in a manner. to be hereinafter'dee 35 slidable' member 89. Member 89 is provided with
The transmitting unit comprises. a commutator‘
a shouldered‘p'ortion 9| having a’step or shoulder"
92 which cooperates under certain operating con
5| formed with ?ve equal size segments 52,
ditions, presently described, with the right, end,
scribed;
1
.
thereon, each of, which is assigned to one impulse‘v ' ' of slot 88. , Member 89 is 'slidably supported by’ a
of'the well-known Baudot ?ve unit code. Two 40 bracket 93, and is further provided with a later
otherv segments are provided on the commutator
face other than the ?ve segments 52, one of which,
53,: is assigned to the stop interval while the
ally directed shoulder 94 which abuts against
bracket 93 when slide member 89 is biased right- '
wardly by a spring 95 and acts as a limiting stop
other, 54,'is assigned to the start interval.’ 'Thus,‘
for the rightward movement of -member 89, as
the=transmitting apparatus is of the start-stop 45 well as a vpivot point, as will presently appear.
type, the operation of which is well known.v A;
collectorring 56 is provided which is formed in a
complete circleconcentric to the ring of segments1v
and which is electrically connected successively:
therewith by means of a distributor brush 511 50
which‘ismounted securely to a distributor shaft
58 to rotate therewith.
'
HA motor 59 ‘is provided having a’ worm 6|‘ on’
Attached to the right end of slide member 189 is a
vertically directed stud 96 whichcooperates with
the insulated end 91 of 'a contaot'bank 98 com-.
prising a normally closed contact pair 99 and a
normally open contact pair I9I.
_
.
I
Theleft-hand endv of slide 89 (as viewed in Fig.
1) cooperates with the vertically extending por-.
tion I92 of arm I93 oflever I94pivotally mounted
the'motor shaft 69 which cooperates with and
on 'a pivot I95. Lever I94 is provided with a cam
continuously drives a gear wheel 62 positioned 55
follower arm I96 which cooperates with the pe
about the distributor 58; The distributor'shaft
riphery of cam 82. _A spring I91 normally biases
is, in turn, driven through a friction clutch 63
lever
I94in a counterclockwise direction tov bring
cooperating with gear 62 in a well-known man
arm I96 against the periphery of cam '82.; _Lever
ner} A switch 64 is provided which completes an
electrical circuit from an alternating current 60 I94 is also provided with a'downwardly directed
portion I98 which cooperatesL with a normally
source to drive the motor 59; obviously, a direct
current source may also be used.
8
~
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Positioned securely to the distributor shaft 58
closed contactpair I99.
.
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~
The operation of the'device according ,to, the '
is a disc 66 which has a stop lug 61 extending . present invention and-its, cooperation, with the.
therefrom. The stop lug 61 engages, during cer 65 tape sensing and transmitting apparatus, and the
electrical circuits therefonwill now be described.
tain periods of operation, with the end of a-stop
Upon the manual closing of switch 642. circuit
arm 68, which is pivotally mounted on a shaft ‘I9
is completed from; the current source to‘ cause vthe
and which is normally biased in a counterclock
wise direction into engagement with the stop lug , operation of the ‘motor. 59g-whichresultsin rota-.
61 by means of a spring ‘II. The opposite end of, 70 tion» of the worm 6|, on the motor shaft and a ,
consequent rotationjof the gear 62' about the dis-1v
the-stop arm 68 forms an armature for a mag
tributor shaft 58. 7 However, atethisgtimejthe dis
tributor shaft 58 will not rotate‘,inasmuchl.asthe'
An operating cam 13 is also secured to the dis:
'tributor' shaft 58 and cooperates with a cam ' stoparm'68 is-engaging the stop-lug" 6’I and pre
follower roller 14 which forms one end of a 75 venting rotation‘ thereof. Suchnon-rotation of
“2,404,339
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6
v
the distributor shaft 581s possible because of! the
friction clutch 63. The distributor brush is at
this point on the stop segment 53 of the commu
tator 5I ‘which is customary in start-stop teleg
raphy. Upon the manual closure of switch I29,
assuming that there is suflicient tape I2 in loop
the stop segment, but for purposesof theipresent
disclosure-the timing has been chosen‘- so that‘ the
magnet 81 is energized‘ immediately {afterthe ini
I30 to allow the taut-tape roller I6 to be in a
downward position with its arm I9 closing the
signal, the“‘bre_ak” will not 1be effective to stop
tiation of thesignal cycle. Moreover; if the line
circuit is opened 0r_f‘broken” at switch I39 ‘or
any other point during the transmission of a code
the‘ operation? of the transmitter until the instant
contact pair 2|, potential will be supplied. from
codesignal (signal ‘being transmitted) has been
grounded battery I3I through the switch I29, 10 completely transmitted, as will presently appear.
through the contact pair 2| which is closed, over
While shaft 58 is-rotating continuously during
conductor I32, through, normally closed contact
normal transmission ‘and the notch 85 in cam 8I
pair 99, over conductor I33 and through winding
passes the left, end of lever 83 cyclically, the'end
of lever 83 will not fall _'into notch 85 because at
of magnet 12 to ground.
.
Magnet 12 will upon its energization, cause
that time (which is during ‘the stop period) the
lever 88 to rotate about its pivot 10 against the
contact pair‘ I09jopens, ‘due to coacticn’between
action of spring ‘II to‘remove the extremity of its
arm‘: I06 and notch 90, to remove the shunt
rightward arm from blocking engagement With
around magnet 81, thus permitting magnet 81, to
stop lug 61 on stop disc 66, thus initiating rota
operate to hold lever 83 ‘in its counterclockwise
tion of shaft 58 and the several elements attached 20 position. However, if a “break” occurs injthe
thereto. Cam 13 upon rotating causes lever 15
line circuit, thus causing the line to be opened,
to oscillate (follower roller 14 being held against
themagnet 81 will not become energized during
cam 13 by springs 32) to in turn impart oscilla
the stop period, when contact pair I09 is opened,
tion to ball 34. As the bail 34 oscillates,_t_he sens
as no battery will ‘be applied from distant sta
ing levers 26'are cyclically actuated to sense the 25 tion I38, so that then the lever 83 ‘will respond
code combinations appearing in the tape I2. The
setting of the levers 26 ‘permutably in accordance
with code perforations sensed in thetape is trans
ferred to the contacts 48 and 49 through them;
strumentality of rockers 46.
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to the pull of'spring ‘86 when the notch’85 regis
ters with the end of lever 83, ‘thus permitting
the end of said lever to fall into said notch.
30
When the shaft 58 is in its stop position, as
shown in Fig. 1, the distributor brush 51 is on
Under this condition of operation, the left arm
of lever‘ 83 will be ‘moved counterclockwise so
that slot 88 will engage ‘the shoulder or step
92 due‘ to the actionof spring 95‘on slide 88,
spring 95 acting to rotate slide 89 in a counter;
clockwise direction about shoulder 94 as a pivot.
the stop segment 53 of the commutator 5| which
is customary in start-stop telegraphy. ‘During
this condition of operation the line circuit is 35 Then, when the high portion ‘of cam ~8I‘ again
completed from ground, through shaft 41, over
conductor I34, then either through the winding
of magnet '81 or through shunting contacts I09
(depending upon the condition of operation),
then over conductor I35, through segment 53,
cooperates with the left end oflever 83‘to rotate
lever 83 counterclockwise the slide 89 will be
urged leftwardly (as viewed in Fig. ,1) to open
contact pair 99 and close contact pair NH. The
40
over brush arm 51, through ring 56, over line con
opening of contact pair 99 causes magnet ‘I2 to
become deenergizedv to effect the stopping of
shaft 58, as the battery I3| will be cut out of
ductor I36, through the receiving magnet I31 of
remote station I38, through switch I39 and to
the magnet circuit. The closing of contact IOI
grounded battery I4I. As the brush arm 51 ro
completes an energizing circuit for signal lamp
tates during signal transmission, it traverses in 45 I00 (or any other form of alarm) from ‘battery
turn the start segment 54 and the code impulse
I95 over an obvious circuit through now closed
segments 52, completing its code cycle by again
contact pair.I8I.
' i
"
contacting the stop segment 53.v The segments
Thevtransm-itter remains in its stopped posi
52 are connected to the contacts 48, so that as the
contacts 48 or 49 are closed simultaneously dur
tion until slide 89 is released by’ a push rod I42
which is slidably mounted inbrackets I43-and
ing each sensing operation according to the code
combination sensed, the impulses are transmitted
over the line conductor, to station I38, sequen
I44 suitably mounted to the transmitter" frame.
A spring I45 surrounding rod I42 normally urges
rod I42 rightwardly, out of engagement with slide
89.‘ Rod‘ I42 is provided with'a sidewardly ex
tially.
Cams BI and 82 are so conformed ‘with notches 55
85 and 90, respectively, that‘magnet 81 is ener-l
gized during substantially the latter half of the
stop impulse and short circuited through closed
contact pair I09 during the remainder of the
signal cycle and in the stop position of the trans 60
mitter distributor, which occurs during the ?rst
portion of the stop segment 53. Thus in the case
of several transmitter distributors connected in
the line with but one distributor transmitting, the
inductance and resistance of the magnets 81 (or 65
magnets I89. in Fig. 2) of the units not trans
mitting will not be re?ected in the line or local
tending pm I 46 which'is normally blocked ‘by
a shoulder I41 on a bracket I48.
If it is de
sired to prevent the transmitter from respond-7
ing to a “break” signal the push rod I42 is
turned to release pin I46 from lug I41 and is
positioned sothat pin I46 engages a slot _.I49
also in bracket I48.
.
As previously described, lever I04 is provided
with an arm I02 which cooperates withv slide
89. Thus, when rod I42 is depressed tobring
pin I46 into engagement with slot I49, said rod
I42 will, through the interposition of slide 89 and
arm I02,v cause lever I04 to rotate clockwise
circuit as the case may be. Also, in the case of
against the action of spring I01, thereby main,
a single vtransmitter distributor in the line in the
taining contact pair I09 closed. Manifestly, un
stop position or transmitting (when it is desired 70 der this condition of operation, the magnet 81
to prevent the transmitter from responding to a
remains shunted at all times.‘
“break” signal) its break-lock magnet is not in
the line or local circuit.
Modi?cation
Of course,‘ the cam
notches could be positioned so that the magnet
81 would be energized during the ?rst portion of
75
7‘ A modified form.of the inventionis shown in
Fig. 2, in which corresponding elements are 00b
2,494,839
tion~with the principal embodiment of the inven
resnondingly numbered- 6' .Qmyihe. additiqnal ale:
tion;
‘ ' mentswill'be described hereinaitenrecoursebeg'
y
W
‘In amanner similar to that described in Fig. l,
ing had tothe primiipalg embodiment ‘for; a de-_
scription of_ the tape sensing and transmitteripor-v
cams I8I and I82 are provided with depressions
22I and 222, respectively, so disposed or related
that magnet I89 is energized during substantially
tion.
> Mounted onshaft
. v58 area
-.
. pairjof
;,
v cams
.- :
-I8I
the latter half of the stop impulse and short cir
cuited during the remainder of the signal. cycle,
for reasons previously mentioned. The timing
and I82, corresponding respectively-to cams 8I
and 82, org-the embodiment shown in Fig. )1. - Coop
eratively associated with‘cam I8I isoneyarm I83
of a three-armed lever I84 pivotally mounted on 10 cam I8I is so designed that should a line ‘.‘breaki’
occur, upon the opening of switch 2I1 or other
a pivot shaft 185.; Lever‘ I84 is_normally;biased
wise, the code signal being transmitted at‘the time
in a clockwise direction by aspring I864to main
of the “break” will not be mutilated. .In other
tain the-cam :follower extremity of arm' I83 in'
contactual relation with ; the, periphery .of cam
I8 I. Arm I81 of lever-J84 terminates in an arma-‘
ture portion I88, which; cooperates with a mag;
words, irrespective of‘ when the line .“break”
the brush arm 51 will always be brought
1,5. occurs,
to rest on thestop segment.
_
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',-While1_shaft.58 is rotating constantly during
normal transmission'and the depressionl22l. in
net I89 suitably mounted in the transmitter ap
paratus. ;
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,cam I8I cyclically passes the follower end of arm
.7 ‘:Lever. [8411s also provided with an arm'I9I, to
i the extremity of_ which is secured ‘a depending 20 I83 of lever I84, said end of arm I83 will not'iall
' into the depression 22I because at that ‘time
stud I92 which cooperates with, a lever I93’ also
pivotally mounted on pivot. shaft I85. 'Lever
(which is during the stop period), the ,contactlpair
2I0 opens, due to the coaction between the arm
of lever 206 and depression 222 of cam I82, to
rection about shaft; I85 bya spring I94. Lever
I 93 is provided with a notch I95 which cooperates 25 remove the shunt around magnet I89, thus per
I93 isnormally urged in a counterclockwise di
' mitting magnet I89 to energize to hold lever, 484
with arm I96_of,_a bell crank lever ;I9'_I~pivotally
‘mounted-one, pivot I98. 1 The. other arm I99 of
lever I91 cooperateswith a push rod 72_0I, which
in its counterclockwise position. .However, ‘if a
“break”. occurs in the line circuit, thus causing the
line to beropened, the magnet I89 will not become
is slidably rmounted‘in a bracket 202. A spring
30
(as wiéwédin Fig- .2.» {AT depending. stud. 30.4. is
mounted at the endof the “lever I93. and cooper
energized during the stop period, when contact 2I 0
is opened, because battery will no longer be $119
plied thereto from distant station 2 I 6, so that then
the lever I84 will “respond to the 'pull of spring
186 when the notch 22I registers with the end of
arm I83, thuspermitting the end, of said
:Associated with cam I82 is a lever‘ 206 ‘piv 35 lever
lever to fall into said notch. .,
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.1,
oted at '201, and which is ‘normally biased in a
Under this condition of operation, the lever
clockwisedirection by a spring 208 to urgeits
I84 will be actuated in a' clockwise direction so
clamv follower’ extremity constantly into contacf
that stud I92 will cause lever I93 to rotate also
‘ V tual engagement with the periphery of cam I82.
Thelopposite extremity of lever;206 is provided 40 in a clockwise direction against the‘ action of
spring I94 to'effect the disengagement of the end ~
with a stud 209 which cooperatesiwith' a contact
of arm I96 of bell crank lever I91, from the notch
pair ,2'I0. included in the signal line to‘ provide a
I95 thereby permitting the bell crank I91 to re
shunt for the magnet I89.
‘
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ates with alcontact pair 205 included _in athecir:
cult for the stop magnet".
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' Theoperation of the modi?ed form of the
present'invention will now be described. Upon
the ‘manual closing. of’ switch 64, the circuit for
motor v59 will be completed, thereby “tending to
applypower vto shaft 58 through friction clutch
63; "Shaft 58 is .held» against rotation by the
45
spond to the pull of its spring200. Arm. I96 of
lever I 91 will thus block the lever I93 in its clock
wise position, and stud 204 on lever I93 will hold
the contact’pair 205 opento thereby openlthe
energizing'circuit for the stop magnet 112'.’ The
transmitter will thus be stopped and will remain
its stopped position until‘lever I93 is released
engagementfot stop arm 68 ,with stop ,lug 61. .59 ‘in
by
,arm
I96 of bell crank I91. This release is
Uponigthe' manual, closure of switch I29, poten
1effected by depressing the push rod 20I to cause
tial will be supplied to start magnet 12 over
the bell crank I91 to be rotatedcounterclockwise
acircuit extending from‘ grounded battery I3I,
whereby the end of lever arm I96 will again enter
throughswitch I29, through contact pair 2|, over
the notch I95, permitting the lever I93 to rotate
conductorv 2II, through contact pair 205,".over
Ysu?iciently in a counterclockwise direction, to
conductor2 I2,.and.through the winding of mag‘
allow contact pair 205 to close.
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net 12 to ground. “Magnet 12 will, upon ener
gization, attract-lever 68 to release the shaft 58
for. rotation.
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When the shaft 53 is in‘its stop position, as shown in Fig. 2, the distributor brush '51 is on
It is understood, of course, that in the arrange
ments shown, the magnet I89 could be connected
60 as shown in Fig. 1, or the magnet 81' could be
connected as shown in Fig. 2. With the arrange
ment shown in Fig. 1, the break-lock magnet
‘the stop segment 53' of the'commutator'5I and’
and/ or its short circuiting contact are in the line
the signal line circuit is completed from ground
through shaft“, over conductor ‘I34, through
circuit only during the stop interval, while in
65 Fig. 2, the break-lock magnet and/or its short cir
segment 53,;over" brush 51, through’ ring 56,7over -
cuiting contact are in the line circuit during all
conductor 2 I 3, then either through'the. winding
oi‘, magnet I89 or through the shunting contact
pair>2l0f (dependinglup‘on the condition of oper
of the impulse intervals.
ductor 2I4, through'the receiving magnet 2I5
is not limitedto ‘such embodiments, but is ca
pable of modi?cation, rearrangement, and substi
tution of parts and elements without departing
\
.
Although certain speci?c embodiments of the
present invention have been shown and described
ation, ‘asywill presentlyapDear); over line con 70 herein, it is to be understood that the invention
of remote station 2I6, through‘ switch 2I1, and
to grounded battery 218..
the'shaft 58 rotates,
from the spirit of the invention, and Within the
,code signalsare transmittedover ‘the line cir
ingtnojimonoer already described in connect
75 in
scope of the appended claims. .
2,404,339
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What is claimed is:
1. In a communication system, a rotary dis
tributor of the start-stop type for generating sig
nals, a break-lock means comprising timing in
strumentalities for controlling the operation of
said distributor, said means e?ective in response
to a predetermined condition of the signal line,
and means at a remote station for producing said
electromagnetic means for controlling said signal
generating means, said electromagnetic means
controlled-‘by a local source of current, means in
cluded in the signal line circuit and e?ective in
response to a predetermined signaling condition,
a lever arrangement controlled by said last re
cited means for controlling the effectiveness of
said electromagnetic means, means for normal
predetermined condition to render said break
ly shunting the circuit through said magnet, and
lock means effective in timed relation to said 10 cam means for timing the operation of said ,
signals.
shunting means to render said break-lock means
2. In a communication system, a rotary dis
effective to stop said distributor.
tributor of the start-stop type, a break-lock means
for controlling the operation of said distributor,
said means effective in response to a predeter
mined condition of the signal line, cam means
for timing the operation of said break-lock means,
and means at a remote station for producing said
predetermined condition.
'
>
3. In a communication system, a rotary dis
tributor of the start-stop type, electromagnetic
means for controlling said distributor, said means
controlled by a local source of current, a break
lock means for controlling the operation of said
electromagnetic means, said break-lock means
embodying a magnet normally included in the
signal line circuit and effective in response to a
predetermined signaling condition, and means at
a remote station for producing said predetermined
signaling condition.
4. In a communication system, a rotary dis
tributor of the start-stop type, electromagnetic
means for controlling said distributor, said means
controlled by a local source of current, a break- '
lock means for controlling the operation of said
electromagnetic means, said break-lock means
comprising a magnet normally included in the
signal line circuit and effective in response to a
8. In a communication system, a rotary dis
tributor ofthe start-stop type, electromagnetic
v15 means for controlling said distributor, said means
controlled by a local source of current, a break
lock means for controlling the operation of said
electromagnetic means, said break-lock means
including a magnet normallyinserted in the sig
20 nal line circuit and effective in response to a pre
determined signaling condition, means at a re
mote station for producing said predetermined
condition, and means to render said brake-lock
means ineffective.
,
. 9. .In a communication system, a segmental
_ distributor of the start-stop type for transmitting
signals comprising a predetermined number of
signal impulse intervals, electromagnetic means
for controlling said distributor, said means con
30 trolled by a local source of current, a break-lock
means for controlling the operation of said elec
tromagnetic means, said break-lock means com
prising a magnet normally connected to one only
of the segments of said distributor and effective
in response to the connection of said segment to
the line pursuant to a predetermined signaling
condition, cam means for-timing the operation
of said break-lock means, and means at a re
predetermined signaling condition, cam means
mote
station for producing said predetermined
for timing the operation of said break-lock means, 40 condition.
and means at a remote station for producing said
10. In a communication system, -a rotary dis
predetermined signaling condition.
tributor having a start segment, a stop segment
5. In a control device, signal generating means,
and a plurality of code segments, a brush asso
electromagnetic means for controlling said sig
nal generating means, said electromagnetic 45 ciated with'said distributor, means for rotating
said brush, a break-lock means for controlling
means controlled by a local source of current,
the operation of said distributor, means for con
means included in the signal line circuit and ef
ditioning said break-lock means as said brush
fective in response to a predetermined signaling
traverses said stop, start, or code segments of
condition, lever means controlled by said last re
cited means for controlling the effectiveness of 50 said distributor, and means to permit the oper
ation of said conditioned break-lock means only
said electromagnetic means, and cam means for
when said brush arm is on said stop segment.
timing the operation of said lever means.
11. In a communication system, a rotary dis
6. In a communication system, a rotary dis
tributor
of the start-stop type, electromagnetic
tributor of the start-stop type, electromagnetic
means for controlling said distributor, said means 55 means for controlling said distributor, said
means controlled by a local source of current, a
controlled by a local source of current, a break
break-lock means for controlling the operation
lock means for controlling the operation of said
of said distributor, said break-lock means includ
electromagnetic means, said break-lock means
ing a magnet normally inserted in-the signal line _
comprising a magnet normally included in the
circuit and effective in response to a predeter
signal line circuit and effective in response to a 60 mined signaling condition, means at a remote
predetermined signaling condition, means for
normally shunting the circuit through said mag
station for producing said predetermined condi
tion, cam means for timing the period of e?ec
tiveness of said remote means to render said
net, cam means for timing the operation of said
shunting means to render said break-lock means
break-lock means‘ eifective to stop said distribu- '
effective to stop said distributor, and means at a 65 tor, and means dually effective to render said
remote station for producing said predetermined
condition.
"I. In a control device, signal generating means,
break-lock means andsaid timing means ineffec
tive.
WALTER J. ZENNER.
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