close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2405230

код для вставки
G MYERS
TELEPHONE SYSTEM
_#E
m
ME
Q
SR._3XNSX«_uJUE
l
ä
@a@___
_
_
~~
è_È
.___L.L_
_ë
Aug”
ß H4$°
` '
'
o. MYERS
¿405,20
TELEPHONEy SYSTEM
Filed Feb. 17, 1945
I
2 Sheets-Sheet 24
JENDRS
l /m/EA/r n
O. MYERS
A TTOR/VEV
Patented Aug. 6, i946
2,405,230
v.UNITED STATES PATENT ’OFFICE
2,405,230
y
TELEPHONE SYSTEM
Oscar Myers, Mount Vernon, N. Y., assigner to
Bell Telephone Laboratories, Incorporated, >New
York, N. Y., a corporation of New York
Application February 17, 1945, Serial No. 578,441
11 Claims.
l
(Cl. 179-27)
2
This invention relates to telephone systems,
fective to release the marker without makingva
trouble indicator record.
and more particularly to systems in which oper
ators control automatic switching equipment,
The features of the invention will be more ap
parent from a consideration of the following de
scription read Vin connection with the drawings
in which Fig.' l shows a portion of an operator’s
key-set, and the code registers of a-sender and
and has for its object to overcome the effects of
unstandard operations on the part of such oper
ators.
Certain types of automatic telephone switches,
for example, cross bar switches are operated by
a marker with a schematic showing of a marker
means of common control circuits known as reg
connector. Fig. 2 shows certain control relays
ister senders and markers. The designation of
of the marker, and the circuits for detecting a
~ changed key and thereby modifying the action
of the marker.
a wanted subscriber is first registered in a reg
ister sender. When digits representing the of
ñce designation have been registered, the sender
The invention is particularly applicable to tel
is connected with a marker and that designation
ephone systems of the type disclosed and claimed
is transmitted to the marker. In the marker the 15 in Patent 2,236,246 to King, McKim and Myers,
registered oñice designation causes the operation
granted March 25, 1941, and the drawings have
of a route relay which controls the selection of
. been based on that disclosure. All of Fig. 1 has
a trunk to the wanted oiiice and the operation of
been taken therefrom as well as certain of the
the switches to extend the connection to that of~
relays of Fig. 2 and the same reference numerals
iice.
20 have been employed. Reference is also made to
Certain operators who >control cross bar
that patent for the circuits and'operations omit
switching equipment are provided with key-sets
ted from the present disclosure.
comprising a row of keys for each digit, the op
Further reference is made to Patents 2,235,803
eration of a key setting up a registration in the
to W. W. Carpenter, granted March 18, 1941, and
corresponding register of an associated sender. 25 2,202,921 to A. C. Powell, granted June 4, 1,940,
The keys lock as operated and are normally re
for an understanding of the trouble indicator
leased by the action of release magnets under
and the manner in which it is employed for rethe control of the sender. -
cording trouble conditions. Such circuits form
'
However if a second key is operated in any one
a part of the marker on which the King-Mc
row, the previously operated key is released and 80 Kim-Myers patent, above-identiñed, 'was based
the second key locked. If one of the Ykeys rep
but were omitted from the patent drawing to
resenting the oñice code is changed in this man
avoid further complicating the disclosure.
ner, either accidentally or in an attempt to cor
rect an error, while the marker is associated with
An operator’s position in a cross bar toll of
ñce is equipped with a key-set including a large
number of vrows of keys, each row containing a
key for each of the ten digits.) The individual
keys lock when operated but may be released
the sender, a trouble release of the marker fol
lows. As a rule, this trouble release results from
the fact that the release of the iirst key breaks
down the circuits causing the operation of one
route relay, while the operation ofthe second key
closes circuits for operating a different route re
lay and the overlapping release and _closure of
the circuits controlled by the two route relays re
sults in the simulation of false crosses between
these circuits and the operation of cross detect
ing relays.
40
by operating another key which is locked in turn.
After the operations resulting from the registra
tion have been completed, all locked keys are
released lby a set of release magnets. In the
drawing, 'f_ourkeys have been shown in each of
the three rows on which the code digits are set up.
Assuming that the operator sets up a code 189
45 by operating key 1 in row 3403, key 8 in row 3405
and key `9 in row 34H37,y ground supplied to the
The trouble release of a marker is normally
key-'set over condutor 51|5 is extended over -the.
accompanied by a record on the trouble recorder,
left contact of key 1 of row 3403 to battery
but the records accompanying a release due to
through the winding of relay 3309 in the A code
the change of a code key are misleading since
50 register. Circuits are closed from ground over
they indicate a cross condition which does not
the left contact of key 8 of row 3405 to battery
exist.
1
In accordance with- the ¿present invention
means is provided for detecting the change of
one or more of the code keys, which means is ef:
through the lower winding of relay 440| and
over the right contact of the same key to bat
tery through the'winding of relay 4403 of the
B code register. Similarly, the operation of key
2,405,230
3
9 in row 3401 causes the operation of relays
4408 and 4401 in the C code register.
When the digits of the oñice code have been
registered in the sender, the marker connector,
represented by relays 1304 and 1405, is operated
to connect the sender with an idle marker thereby
establishing a large number of connections be
tween the sender and the marker.
v`
Each of the operated relays in the sender regis'
ters closes an obvious circuit for a corresponding
relay in the marker registers. Since sender re
lays 3309, 440|, 4403, 4406 and 4401 were oper
ated, marker relays 460|, 4606, 4608, 5803 and
5804 are now operated.
~
When the marker was seized, relay 6808 was
operated, connecting ground over its contact I,
normal contacts of relay 6804, conductor 1451
to battery through the winding of relay 6802 and
through the marker connector to the-B and-C1`
code registers where the circuit is extended over 20
the back contact of relay 4402 and conductor
1453 to battery through the winding of relay
4001, over the back contact of relay 4404 and con
4
ator sender, relay 202 is operated. When relay
6806 operates, following the setting and test of
the marker registers, it operates relay 200 over an
obvious circuit. Relay 200, in turn, completes a
circuit from ground over a chain circuit carried
over a front or back contact on each register re
lay, oVer conductor 203, contact 1 of relay 200
through the winding of relay 204 and battery.
Relay' 204 closes a circuit from battery through
its winding, Contact 1 of relay 200, front contact
of relay 204, front contact of relay 20|, rectiñer
205, condenser 206 to ground. This circuit is in
effective as long as the call progresses normally.
However, if the operator, accidentally or inten
tionally, depresses another key in the rows 3403,
3405 and 3401, thereby restoring the key previ
ously operated, the sender register relay is re
leased and a new one operated, in turn releasing
a marker register relay and operating a different
one. The release of the one marker register re
lay and the operation of the other register relay
causes a momentary opening of the chain circuit
above-described, and the energy of relay 204 dis
charges‘through rectiñer 205 and is stored in con
tact of relay 4405 and conductor 1464 to relay 25 denser 206. The combination of rectifier and
condenser act as an impulse lengthener, the rec
5802,. At its contact 2, relay 6800 connects ground
tiñer being so poled that the condenser cannot
over the normal contacts of relay 6805 to battery
discharge to ground over the chain circuit when
through the winding of relay 680i and over con
it is reclosed.
ductor 1409 through the marker connector»V to the
Instead, condenser 206 discharges in a circuit
A and B code registers where the circuit is ex 30
over the contact 5 of relay 6808, upper winding of
tended over the back contacts of relays 3-311,
polarized relay 201 to ground, Relay 201 oper
3312, 3313 and 4400 and over conductors V1451,
ates in response to this discharge current and
1458, 1459 and 1455. to battery throughthe wind
closes a locking circuit for itself from battery
ings of relays 4602, 4603,. 4604 .and 4605. All oí
ductor 1463 to relay 580| and over the> back con
the marker codev register relays: have therefore
been operated, either directly from the >operated
through its lower winding, contact 4 of relay 0808,
operated Contact of relay 201, to ground. at con
tact 5 of lrelay 200.
Relay 201 operated, closes a circuit from ground
at contact 5 of relay 200, front contact of relay
_ Atthis time a chain circuit is completed over
theA upper front contactsotthemarker register 40 201, iront contact of relay 202, back contact of
relay 208, winding of relay 200, resistance 210 to
relays, .over front contacts .of relays 6802 and
battery. Relay 209, at its lower Contact dis
680| to battery through the right windings of re
connects ground from- the operating circuitof
lays 6805 and 6804. The latter relays operate,
relay 21| which normally functions in case of
locking under control of relayY 6808 and discon
trouble
to call in the `trouble indicator, thereby
necting ground from conductors 1.469 and 1401,
preventing a false indication on the trouble
permitting the release of the marker register re
lays operated-over those conductorsY and also're
At its upper contact, relay 209 extends its oper
leasing relays 0802 and 680|. AA_ circuit is now
ating ground to the winding of trouble release
closed'from ground at the» frontcontact of relay
relay 5.103"` which grounds conductor 1413 lead
6805, over the back contacts „of relays 680|. .and
ing to the sender, causing the sender to release
6802 to the winding of relay 6806` and battery.
this marker and select another marker for a
The operation of relay .6006 indicates that the
second trial.
Y
code ,registers have been operatedand that .the
sender. code register relays or indirectly over the .
back contacts of the non-operated relays.
recorder.
circuits connecting thesender registers.: with the
marker registers have been tested and found free
from opens or grounds;- sov that the registrationin
the marker correspondsto that of. the sender. c
c Relay 6806 prepares the circuits for translating
`
_
A number of safeguards are includedA in the
circuit. For examplaif the marker is in use'with
a sender other than an operator’s sender; relay
202 is not operated. IfV under such a condition
relay 201 operates falsely,v a circuit isclosed from
the registered code and operating the correspond
ground at contact 5'of relay 200, contact of relay
fied patent to;King-McKim-Myers. k
ing to the trouble indicator and closes a circuit
andpornpletion of the call by the same or a dif
winding of relay 2.|-'|Ã to'call in the trouble indi
ing route relay to control the selection of an idle 60 201', back contact of relay 202 to the winding'of
relay 200 and battery. Relay 208 locks under the
outgoing trunk and the extension of the connec
control of'. trouble> indicator4 relay 21|, opens thev
tionto the selected trunk. _These operations take
circuit of relay' 209; grounds conductor 212 lead
place as described in detail Yin the above-identi
The remaining equipment of Fig.. 2` ís `provided 65 over the-back contact of relay 213 to the winding
of relay 214 and battery.
for the purpose ofgdetecting any changes in the
Relay 214 operates relay 215 which closes a cir
code lgey settings for releasing the marker with-_
cuit írom the back contact of relay 20.9 to the
out a troublerecord and permittinga second trial
ferent marker according to the new key setting.
When relay 6808 operated, it., closed a circuit
from groundat its contact. 3, over the back con
tacts of troublerelease relay .5103. and'. release
relay 100| for a. supplementary oir-normal' relay
20 1. .When the marker isc'onnected witnan oper»
cater. When a trouble indicator recordhas been;
made, relay 218 operates, closing a circuit from
ground over its front contact, contact of relay4
2| 1, upper back contact of relay 209 to the wind
ing of relay 5103v to bring about vthe release of
ï the marker.
2,405,230
Both release relay |90 I and trouble release relay
5l03, in operating, open the circuit of relay 20|
so that condenser 206 will not be charged when
the code relays release at the end of a call.
Relay 2i3, which operates when the marker is
means responsive to the subsequent operation of
a _different key in one of said rows, thereby oper
ating or releasing one or more relays in said reg,isters, for operating said error detecting means
to disconnect said selection control circuit from
seized in connection with a second trial, reorder
said key-set.
,
Y
,
call, opens the circuit of relay 2M and short
s 6. Ina telephone system, a manually operable
circuits the winding of relay 209 in order to at
keyfsetcomprising a plurality of rows of locking
tempt to complete the connection in spite of
keys, la‘ selection control device having a corre
`troubles which would otherwise operate either 10 spending plurality of relay registers, means for
relay 2id. or 209 and cause _a trouble release of
associating said selection control device with said
the marker.
- '
>key-set, means responsive to the operation of one
v >What isl claimed is:
_
.
key in each of said rows for operating one or more
1, In a telephone system, manually operable
relays in each of said registers, said registers serv
keys, a selection control device having a plurality
ing to controla selection in accordance With the
of sets of relays, one or more relays being oper
relays operated, error detecting means, means re
ated in each relay set by successive operations of
sponsive to the operation of said register relays
said keys for controlling a particular selection,
for preparing a circuit forsaid error detecting
an error detecting circuit mechanism, means in
means, and means responsive to the subsequent
each relay set for operating said error detecting 20 operation of a different key in one of said rows,
circuit mechanism by the operation of one or
more different relays in a relay set after the relays
in the relay sets have been -operated, and means
inÀ said error detecting circuit mechanism for re
thereby operating or releasing one or more relays
in said registers, for operating Vsaid error detect
ing means to disconnect said selection control
circuit from said key-set.
_
.
,
.
leasing'said selection control device.
,17. In a telephone system, a manually operable
2. In a telephone system, manually operable 25. key-set
comprising a plurality of rows of locking
keys, a selection control device having a plurality
keys, a selection Acontrol device having a'corre
of sets of relays, one or more relays being oper
sponding plurality oi relay registers, means_for
ated in each relay set by successive operations of
said keys forv controlling a particular selection,
associating said selection control device with said i,
key-set, means responsive tothe operation of one
an error detecting circuit mechanism, means in
key in each of said rows for operating one or more
relays in each of said registers, said registers serv
ing to control a selection in accordance with the
relays operated, error detecting means, means re
each relay set for operating said error detecting
circuit mechanism by the operation or release of
one or more different relays in a relay set after
the relays in the relay sets have been operated, 35 sponsive to the operation of said register relays
and means in said error detecting circuit mecha
for preparing a circuit for said error detecting
nism for releasing said selection control device.
means comprising a chain circuit including con
3. In a telephone system, manually operable
tacts on all of said register relays, and means re
keys, a selection control device having a plurality
sponsive
to the subsequent operation of a diiïer
of sets of relays, one or more relays being operated 40
ent
key
in
one of said rows, thereby operating or
in each relay set by successive operations of said
releasing one or more relays in said registers and
keys for controlling a particular selection, an
opening and reclosing said chain circuit, for op
error detecting circuit mechanism, means in each
erating said error detecting means to disconnect
relay set for operating said error detecting circuit
said selection control circuit from said key-set.
mechanism by the operation or release of one or
45
more diiîerent relays in a relay set in response
to a further operation of said manually operable
keys after the relays in the relay set have been
operated, and means in said error detecting cir
cuit mechanism for releasing said selection con
trol device.
8. In a telephone system, a manually operable
key-set comprising a plurality of rows of locking
keys, a selection control device having a plurality
of relay registers, a trouble indicator, means re
sponsive to the operation of one key in each of
50 said rows for operating one or more relays in
4. In a telephone system, a manually operable
key-set comprising a plurality of rows of locking
keys, a selection control device having a plurality
of relay registers, means responsive to the opera 55`
each of said registers, said registers serving to
control a selection in accordance with the relays
operated, error detecting means, means respon
sive to the subsequent operation of a different
key in one of said rows, thereby operating or re
tion of one key in each of said rows for operating
leasing
one or more relays in said registers, for
one or more relays in each of said registers, said
operating said error detecting means and for
registers serving to control a selection in accord
altering the selection to be controlled by said
ance with the relays operated, error detecting
registers, means normally responsive to the al
means, and means responsive to the subsequent 60
teration of a selection to connect said selection
operation of a different key in one of said rows,
control device with said trouble recorder, said
thereby operating or releasing one or more relays
trouble recorder effective to restore said selection
in said registers, for operating said error detect
control device, and means under the control of
ing means to restore said selection control circuit
to normal.
'
5. In a telephone system, a manually operable
key-set comprising a plurality of rows of locking
keys, a selection control device having a corre
65
said error detecting means to restore said selec
tion control circuit to normal independent of said
trouble recorder.
` 9. In a telephone system, a manually operable
rey-set comprising a plurality of rows of locking
keys,
a selection control device having a plurality
associating said selection control device with said 70
of relay registers, a trouble indicator, means re
key-set, means responsive to the operation of one
sponsive to the operation of one key in each of
key in each of said rows for operating one or
spending plurality of relay registers, means for ’
more relays in each of said registers, said registers
serving to control a selection in accordance with
said rows for operating one or more relays in
each of said registers, said registers serving to
control a selection in accordance with the relays
the relays operated, error detecting means, and 75 operated,
error detecting means, means responsive
2,405,230
7
8
normally responsive to the alteration of a selec
tion to connect said selection control device with
ing said charging circuit eiîective, a discharge
circuit for said condenser independent of said
rectifier and means operative in said discharge
circuit to cause the disconnection of. said selection
control circuit from said key-set,
11’; In a telephone system, a manually operable
key-set comprising a plurality of rows of'locking
said trouble recorder, said' trouble recorder effec
tive to‘restore said selection control device, and
sponding plurality of relay registers, means for
to the subsequentoperation of adíñ'erent key in
one. of said' rows, thereby operating or releasing
one or more relays in said registers, for operating
said error detecting means and for altering the
selectionV to be controlled by said registers, means
keys, a selection control device having a corre
associating said selection control device with said
key-set, means responsiveto the operation of one
key in each of~said rows for operating one or
more relays in each of said registers, said regis
trouble recorder.
y
ters serving to control a selection in accordance
1U. In a teleptone system, a manually operable
key-setl comprising a plurality of rows of locking 15 with the relays operated, a condenser, a rectliier,
means under the control of said error detecting
means to restore said selection control circuit to
normal and to prevent the operation of’ said
keys, `a. selection control device having a corre
spending' plurality of relay registers, means for
'associating said selection control device with said
means responsive to the operation of said register
relays for preparing a charging circuit for said
condenser in series with said rectiiier, a chain
circuit including contacts on all of said register
key-set, means responsive to the operation of one
key- in-:each of` said rows for operating one or more 20 relays for rendering said charging circuit ineffec
relays in each of said registers, said registers
serving to control arselection in accordance with
the relays operated, a. condenser, a rectiñer, a
chain circuit including contacts on all of said
tive, means responsive to the subsequent opera
tion of a different key in one of said rows, thereby
operating or releasing one or more relays in said
registers and opening and reclosing said chain
register relays, means operated over said chain 25 circuit, for rendering said charging circuit effec
tive, a discharge circuit for said- condenser inde
circuit to prepare a charging circuit for said con
pendentY of said rectiiier and means operative. in
denser in series with said rectifier, means respon
said discharge circuit to cause the disconnection
sive to the subsequent operation. of a different key
of said selection control circuit from said key-set.
in one of said rows to open and reclose said chain
OSCAR MYERS. circuit, the opening of said chain circuit render 30
Документ
Категория
Без категории
Просмотров
0
Размер файла
718 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа