close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2406001

код для вставки
All@ 209 E4?
ì
G. DEAKIN
2940
ELECTRICAL S‘IGNÀLING SYSTEM
Filed Feb. 24, 1944
`
5 sheets-sheet 1
BY
vAug., ï'
394.
'
.
@.DEAKIN
-
'
"294
ELECTRICAL SIGNALING SYSTEM
Filed F'ebv;Y 24, 1944
.l 5 Sheets-Shes?. 2
Aug. ZÜ, i946.
' ¿www
G. DEAKIN >
i ELECTRICAL SIGNALING SYSTEM
Filed Feb'. 24, 1944
-5 Sheets-Sheet 3
T0 [371970019 JELFG'TOIÉ
THRU E56/.5 TER H11/05E «
TR2
. INVENTOR
gefaaldßea
BY
AGENT
W
Aug. 2Q, ma.
G. DEAKIN
ELECTRICAL SIGNALING SYSTEM
BY
AGENT
~
,400,001
Patented Àug. 20, i946
Unirse' sTATss PATENT oFFlcE
2,406,001
ELECTRICAL SIGNALING SYSTEM
Gerald Deakin, New York, N. Y., assignor to In
ternational Standard Electric Corporation, New
York, N. Y., a corporation of Delaware
Application February 24, 1944, Serial No. 523,626
28 Claims.
(Cl. 179-18)
l
2
This invention relates to new and useful im
alternating current impulsing circuits described
provements in electrical signaling and switching
hereinafter only the back contact of the pulsing
systems and more particularly to improved im
pulse sending and impulse receiving or register
relay is used and as it takes very little energy to
break the back contact the combination vof two
ing arrangements for use in telecommunication ,
switching systems such as automatic and semi
automatic telephone exchanges.
An object of the invention is to increase the
speed and reliability with which control impulses
may be transmitted from a iirst point to a second
point, for example, from a sub-station or the like
to a control exchange or other position where
selecting equipment is located.
what unreliable) to Work on both long and short
lines. On short lines it becomes heavily mag
netized while on long lines it is only partially
magnetized. It must fall off quickly on short
'
With this object in view, I provide an ar
rangement in which upon the extension of a line
to a distant point at which a selective control is
to be exercised, a source of alternating current
oppositely polarized pulsing relays results in a
very high speed dialling circuit.
The stepping relay as at present used in stand
ard systemsfhas to be adjusted (by the tension
ing of a spring which is always dinicult and'some
lines after being heavily magnetized and it must
.1,5 pull up quickly on long lines when weakly mag
is coupled to the line. A signaling device, such
as a dial, is then actuated to periodically reverse
the polarity of a uni-directional current con
ducting device, such as a dry contact rectifier,
in the line circuit. At the distant pointy there is
connected to the line circuit polarized relay
netized, and it must also fall back quickly on
long lines in which appreciable energy may re
main stored in the line due to its capacity which
tends to retard the release of the stepping relay.
In the dialling system according to my inven
tion, these disadvantages are overcome in a sim
ple and efficient manner. When rectified alter
nating current is applied to the dialling circuit
means which responds to the reversals lof polarity
which is provided with a polarized relay, the re
of the current ñow and controls-switching ap 25 lay is pulled up and forced back with equal en
paratus thereat.
ergy and the effect of the residual energy stored
The pulse cycle of the standard interrupter
in long lines is neutralized. When a back con
dial circuit at present used in automatic tele
tact of the kpolarized relay is used for controlling
phone exchange systems consists of a> closure
the selective means only a small amount of en
and an opening of a single stepping relay direct
current circuit with 4a 60/40 ratio of opening to
closure; One digit is recorded per cycle, and the
yopening of the circuit is the useful part of the
cycle; the closure of the circuit represents time
unavoidably wasted to prepare the circuit to re
ceive the next pulse. In alternating current rec
tiñer dialing circuits in accordance with my in
vention the complete pulse cycle consists of two
pulses, a positive pulse and a negative pulse each
ergy is required to operate the circuit, all of
which tends to make the circuit more sensitive
and rapid in response.
These and other features and advantages of
myl invention will be more clearly understood
from the following description of preferred em
bodiments thereof and the appended claims.
In the accompanying drawings:
Fig. 1 is a block schematic drawing showing
one useful in recording a digit as well as in Jp.
clear understanding of the present invention;
assisting the restoration of the relay which is
operated by the preceding pulse of opposite po
larity. For example, in a preferred arrangement
in which two oppositely polarized relays are used
for responding to the pulses, these two relays op
erate on a “push-up, push-back” principle and
thus the complete cycle is used by both relays
while rectification with polarization places the
operation of the two relays 180° out of phase.
Fig. 2 is a circuit diagram of a subscriber set
circuit provided with a rectiiier dial for use in a
The positive and negative pulses consist in fac-t a
sufficient of the layout of an exchange to give a
system in which a direct current loop is present
over the line until dialing commences;
Fig. 3 is a Circuit diagram of a modified sub
scriber set circuit provided with a rectifier dial
for use in a system in which alternating current
is applied to the line as soon as the register is
connected up;
.
Fig. 4 is a circuit diagram of a register for use
of trains of positive and negative pulses at the
with the subscriber set circuit of Fig. 2;
periodicity of the alternating current source, but
Fig. 5 is a circuit diagram of an alternative
for all practical purposes these integrated series
arrangement of the pulsing relays in the register;
of pulses act as though «they were pulses of the
Fig. 6 is a circuit diagram of a modified register
direct current of the proper polarity. In the 55 for use with the subscriber set circuit of Fig. 3;
2,406,001
3
Fig. ‘7 is a circuit diagram of another modified
register for use with the subscriber set circuit
of Fig. 2 but employing mechanical digit and
change-over switches;
Fig. 8 is a plan view of a rectifier dial showing
4
5 in the housing I when driven by a coiled spring
6, one end of which is attached to the finger
wheel 3, while the other rests in a groove in the
housing part I. A segment 'I is attached to shaft
4 by nut 8. A pawl 9 is pivoted to the segment
“I and tends to engage the teeth of a ratchet
wheel I9 under the tension of a spring Iûa..
Ratchet wheel I0 and a gear wheel II are at
on the line 8-9 of Fig. 8;
tached to each other and rotate freely on the
Fig. 10 is a section taken on the line III-_IIB of
10 lower extension of shaft Il. They are held in
Fig. 9;
position by the flat head IIa of a bearing pin I2
Fig. l1 is a section taken on the line II-II of
when «the» lower part 2 housing the rectifier unit
Fig. 9, and
is mounted in position. Ratchet wheel II] has a
Fig. 12 shows a detail of the spring nest in thc
number of teeth corresponding to the number of
rectifier dial.
Referring first to Fig. 2, the subscriber set cir 15 positions of the finger wheel 3. Every other
tooth is relatively long (in a radial sense).
cuit shown therein is apart from the rectifier
When the finger wheel 3 is in its normal position
dial of the usual type. The rectifier dial which
one edge of the segment 'I rests against a back
will be described later in connection with Figs.
stop I3 formed in the housing I and a. raised sur
8 to 12 includes a rotating rectifier R and a home
contact spring nest S. The operation of the rec 20 face I4 on the inner periphery of the housing I
adjacent the stop I3 lifts the pawl 9 so that it
tiiie'r dial from a circuit point of View is as fol
engages only the deep teeth of a ratchet Il).
lows: When the finger wheel is moved off normal
When the finger wheel 3 is rotated by the user,
a pin P3 allows spring B to break contact with
the segment 'I moves clockwise and when it has
spring C which removes a short circuit from the
rectiñer R, and to make contact with spring A 25 moved an angular distance 'equal to'about one
finger hole spacing, the raised surface I4 no longer
which short circuits the induction coil and trans
bears on the pawl 9 and the latter rotates slightly
mitter. Pin PI causes spring F to break `contact
about its pivot so as to engage both the long and
with spring G until shortly before the first finger
the short teeth of the ratchet wheel ID. Should
hole reaches the finger stop; in other words, the
line circuit is momentarily opened each time the 30 the finger wheel be turned a distance equal to
five linger holes, -t'hat is, should the digit 3 be
ñnger wheel is turned to the finger stop. When
dialed, since there is a, space equal to two finger
the finger wheel is released the rectifier R makes
holes between the hole number l and the finger
one-half of a revolution for each finger hole
stop I9, the pawl 9 will engage a short tooth.
passing the linger stop but before the last ñnger
hole passes the finger stop PI again opens con 35 When the finger wheel is released the spring 6
tact between the springs F and Gr thereby mo
will rotate the ratchet wheel III counterclock
mentarily opening the line circuit which causes
wise. As the segment ’I 'approaches its home po
the digit change-over in the register to take
sition, the pawl Il engages the raised surface I4
place. As will be clear from the subsequent de
and thus disengages the short tooth but reen
scription of the rectifier dial, ‘the rectifier is al Ad0 gag’es the next long tooth just before the segment
ways returned to its predetermined position of
‘I comes to rest against the back stop I3. The
polarity. Thus, should an odd digit be dialed the
object of this arrangement is to insure that the
rectiiier is given a half revolution to restore it
rectifier S always returns to its predetermined
to its normal position while contact between
position of polarity.
springs F and G is open.
The home spring nest consists of five springs
From what has been said above it will be seen
A, B, C, F and G, Fig. 10, mounted i-n a block
that when the 'digit 1 is dialed the initial closure
of insulating material 36 fixed to the upper hous
of the line through the rectifier R in its normal
ing I. Two pins PI and P3 are mounted on the
position sends the first pulse to record the digit 1
segment ‘I in such position that when the ñnger
and that when the finger wheel is released the 50 wlheel is moved ofi normal, pin PI opens the
circuit is opened for the change-over before the
contact lbetween springs F and G, whilst pin ‘P3
rectifier reverses the current.
opens the contact between springs B and C and
The sub-station set circuit shown in Fig. 2 is
permits contact to be made between springs A
intended for use with a system incorporating reg
and B. The segment 'I is of insulating material.
isters of the kind shown in Fig. 4, in which a 55
Assume now that the digi-t 1 is dialed. When
direct current loop is present over the subscriber’s
the finger hole plate and finger stop;
Fig. 9 is an elevation partly in section taken
the finger is »placed in hole number "1, Fig. 8, vand
the finger wheel is moved ofic normal, pin PI en
alternative method of operation alternating cur
gages the tip I5 of the extension of spring F,
rent is applied to the subscriber’s line as soon
Figs.
10 and 12, and Abreaks the normal contact
as the register is connected up. In this case the 60
ybetween springs F and G. Spring F is cut away
subscriber’s set circuit is as illustrated in Fig. 3.
at its lower edge and provided with an inclined
In this arrangement the contact »springs F and
lip
I6. When the hole number 1 has been moved
G shown in Fig. 2, have been omitted as it is
line until dialing actually commences.
In an
an angular distance less than two finger hole
not necessary to open the line circuit when the
65 spaces, pin PI rides over the lip IS, Fig. 12, and
rectifier dial is moved off normal.
disengages the spring F, so that when the finger
The construction of a suitable're’ctifier dial is
' lustrated in Figs. 8 to 12 and will now be de
scribed. Referring first particularly to Figs. 9
and 10, the dial consists of two main parts, an
reaches the finger stop I9 contact between springs
F andG is again made. The three home contact
springs, A, B and C are shown in their normal
upper part I housing the home contact nest HC 70 positions in Fig. 10.> When segment 'I is >moved
off normal pin P3 disengages spring B thereby
and a lower part 2 housing the rotating recticausing Y’contact to ybe broken with spring 'C and
fier S.
made with spring A. The springs A, B and C re
In the upper housing I -is »mounted v'a finger
main inthis .position until the dial returns 'to
wheel 3 provided with the usual finger holes and
attached to a shaft '4 which rotates in a sleeve 75
s:
‘2,406,001
When the linger wheel 3 is released, after it
has moved about three quarters of a finger hole
space, pin Pl reengages the projecting lip I6 of
spring F and again opens the contact between
springs F and G. When segment 'l reaches its Ul
normal position against the back stop I3, contact
between springs F and G is restored.
The lower part 2 houses the rectiner discs S
'6
rectifier dialing since it is believed that this will
enable a clear understanding of the present in
vention without the introduction of unnecessary
complication. When the calling line is picked
up, relay RAR, RBR and RCR operate as de
scribed in the co-pending application referred to
and relay HR is energized over a circuit from
battery, the outer back contact of relay RIR,
Figs. 9 and 1l. These are assembled on a bushing
front Contact of relay RBR, resistor R3 and the
2l of insulating material. Brush Ella is clamped 10 yupper winding of relay HR to ground. Relay
against the rectifier disc on one side of the rec
tiñer unit and brush 2th is clamped against the
disc on the other side by means of nuts 22. A
bearing pin i2 which passes through the bushing
2l has screwed to it a gear wheel 23 and rotates
in bushings 2li attached to the upper and lower
covers of the rectifier housing 2. The bearing l
pin I2 is grooved so that when it is slipped through
the bore of the bushing 2l the rectiiier assembly'
S and brushes 2da and 2gb rotate with the bear~ 20
ing pin l2 and the gear wheel 23.
,
RBR locks up and deenergizes relay RAR as de
scribed in the co-pending application referred
to. Relay HR locks up over both windings in
series with the calling line and over its lowermost
front contact completes a circuit for the slow
release relay RHR. Relay RIR places battery on
both windings of relay DR which are differen
tially disposed, thus relay DR will not operate
as long as both of its windings are energized over
back contacts of relays PR (-|-) and PR (~-).
Relay RHR removes battery from the resistor R3.
Dialling tone is applied over transformer TT.
The circuit remains in this condition until the
The upper and lower brushes 2da and glib rub
against collector rings 2da and 21th mounted on
the inside wall of the housing 2 as shown in Fig.
subscriber commences to dial.
~
Vl1. The external connections are connected to 25
When the finger wheel of the rectifier dial is
the collector rings 2da and Zlib. Gear wheels il
moved from its 'home position the pin P3 opens
and 23 are interconnected by pinions 25 which
contacts B and C and removes a short circuit
are attached to each other and held in position
from the vdial rectifier R and the line circuit is
by a bearing pin 26 mounted in the lower end of
momentarily opened. Relay HR releases but not
the housing portion 2. The ratchet and gear » the slow release relay RJR. When the line cir
wheels are assembled so that when the wheel iii
cuit is closed again, this time through the recti
is inthe position shown in Fig. 10 the rotating
fier Rin the subscriber’s set, current flows in such
rectifier unit S is in the position shown in Fig, l1.
a direction as to energize polarized relay PR (-1-),
The ratio of the various gears is such that the
Fig. 4. This current flows from the 490 cycle,
rectifier unit S makes one complete revolution
50 volt source over a guard lamp GL, back con
when the finger wheel 3 moves an angular dis
tacts of relay HR and RAR a wire, dial rectifier
tance equal to two linger hole spaces.
R at the sub-station, b wire and back contacts of
The setting of brushes 29a and 2Gb, Fig. l1, .is
relays RAR and HR. Relay PR (-l-) Yopens its y
such that when they engage the insulating sur
back contact thus opening one winding of relay
faces 2l. between the collector rings Eta and Zlib
DR and causing it to operate. Relay DR ener
as position 2 of the ratchet wheel passes the nor
gizes relay RSR, which closes a circuit for relay
mal position i on the return journey, the pin Pi
RflR. Relay DR completes a holding circuit for
engages lip l 6 of the spring F and opens the con
relay RHR over a back contact of relay HR.
tact between springs F, and G. Thus the contact
When relay HR closes its back contact, relay DTR
between these springs is opened before the brushes j. operates, locks up and removes dialling tone from
26a and 29h make contact-with the succeeding
the subscriber’s line.
collector rings.
'
The ñrst pulse is always a positive pulse. The
As speed control of a rectifier dial is not critical
next pulse is a negative pulse which follows im- ,
it is suñicient to weight the brushes 2da and 26h
mediately after the iirst pulse and causes polar
at their ends so that they act both as governor
ized relay PR (-) to open its back contact and
wings as well as collector brushes.
relay PR (-l-) to close its back Contact. This
The method of operation of theimproved dial
reversal takes place so rapidly that the differen
ing system as applied to an arrangement in which
tial relay DR which is very slightly slow releasing
a direct current loop is present on the subscriber’s
does not fall off. Relay DR thus remains in an
line until dialing commences will now be de- '
unbalanced operated condition until pulsing is
scribed with reference to Figs. 1, 2 and 4.
Referring ñrst to Fig. i, when a calling sub
scriber removes his receiver a circuit is completed
over the switch hook contacts for the line relay
in the subscriber’s line circuit, an R-link starter GO
completed. The second or negative pulse op
erates polarized relay PR (-), which removes a
short circuit from relay CR2 which locks up over
its own front contact, resistor R4, and a front
contact of relay RëiR. The following or third and
and Chooser circuit selects an idle R-link, a reg
positive pulse energizes counting relay CRS and
ister finder associated with which connects up
so on.
an idle register and a B-link finder selects an
When the series of pulses ceases, the line cir
idle B-link having associated therewith a ñrst
cuit is again momentarily opened by the pin Pl
group selector and a second line finder. The 65 of the dial just before it comes to rest, as has
calling line is picked up over the second line
already been explained in the preceding descrip
finder and an idle iirst line finder having access
tion of the construction of the dial. Relays
to the calling line. All these operations take place
PR (+) and PR (_) remain on their back con
in the manner fully described in my co-pending
tacts, thus the differential windings of relay DR
application Serial No. 521,160, ñled February 5, 70 are again closed in parallel and relay DR falls
1944, and form no part of the present invention.
The register shown in Fig. 4 is generally sim
ilar to the register described in my co-pending
off and releases R33. Relay RSR deenergizesre
lay RöiR but before slow release relay RGR breaks
its front contacts, a circuit is momentarily closed
application referred to above and only that part
from battery, outer left back contacts of relay l
of the circuit has been shown which relates to 75 RSR, front contacts of relay RßR, resistor R3 and
2,406,001
closed in my co-pending application above re
ferred to may be adapted for rectiñer diallingusing a subscriber’s set circuit as shown in Fig. 2.
When the register has picked up the calling
line relay RAR releases and relay RBR operates
as described in the co-pending application re
relay RliR over a circuit from ground, front
contacts of RIR, back contacts of relay HRZ,
front contacts of relay RSR, and winding of
relay R4R to battery. Relay RäR locks up over
its front contact and a back contact of relay HR2.
On the ñrst reversal of currentin the line,
relay PR (_) operates and advances switch DI
from position l to position 2. Relay PR (-[-)
makes its back contact and again energizes the
ferred to, after which the subscriber hears the
dialling tone, the primary circuit of which is
closed from a front contact of relay RBR, back
contact of relay DTR, the primary winding of 10 magnet of switch Dl. This continues until the
tone transformer TT and the dialling tone inter
proper number of impulses have been sent in.
rupter DTI to battery. Relay HRi operates over
During the reversal of current which operates
a circuit extending from ground, back contact
relay PR <+) and PR (_) alternately, relay
of relay RIR, front contact of RBR and one
DRI does not break its front contact, at least long
winding of relay HRI to battery. Relay HRi
enough to release relay RBR, since the reversals
connects its second winding from ground to the
take place almost instantaneously.
a wire and connects relay HRZ from battery to
At the end of the series of impulses the 1ine oir
the b wire. Relays HRI and HRZ operate in
cuit is again opened as described with reference
series with the calling line and telephone circuit
vto Fig. 2 whereupon both relays PR (-i-) and PR
with the rectifier R, Fig. 2, short circuited. Relay 20 (_) remain on their baci; contacts and cause the
HRI operates slow release relay RIR which places
release of the diiïerential relay DR which releases
battery on the two windings of a diiîerential relay
relay RSR. Relay RSR opens the circuit or” the
DR and ground on the armatures of the oppo
sitely polarized relays PR (-|-) and PR (_).
magnet of switch PI which advances from posi
tion 1 to position 2. Relay R3R also over a back
Relay DR does not operate at this time as its 25 contact energizes relay HRA over a circuit from
windings are diiferentially disposed. The magnet
ground, front contacts of relay RIR, back con
tacts of relay HR2, back contacts of relay RSR,
front contacts of RGR and one Winding of relay
back contacts of relay PR (-}-), brush A, terminal
HRI to battery. Relay HRI operates and discon
I of the in-control switch PI, terminal Oi, brush 30 nects the alternating current from the a wire and
C of switch DI, winding of magnet DI tc b-attery.
in place thereof connects its second winding from
of the rlrst digit switch Di is energized over a
circuit from ground, front contacts of relay RIR, >
Magnet DI attracts its armature but this switch
is of the well known type which does not advance
its brushes until the de~energization of the mag
net. The circuit remains in this condition until 35
the subscriber dials the ñrst digit. The in-control
switch PI and digit switch DI operate except as
regards the dialling circuit as described in my
co-pending application referred to.
The digit
ground to the a wire and over another change
over contact disconnects the relays PR (+) and
PR (_) and in place thereof connects relay HRZ
from battery to the b wire. When the dial comes
to rest andcloses the line circuit with‘the rec
tiñer short circuited, relay HR2 operates in se
ries with the calling line and the second winding
of relay HRI. Relay HR2 opens the locking cir
switches are, however, provided with an extra 40 cuit of relay RllR and the circuit of the Íirst wind
bank, as shown at C, whilst the in-control switch
ing of relay HRI. Relays HRI and HRZ remain
PI has an additional bank shown at Ai.
energized in series until the dial is again pulled
When the subscriber starts to dial the ñrst
for the next selection, after which the second
digit the line circuit is momentarily opened, as
digit switch is advanced in the same manner as
described in connection with Fig. 2. This releases
the digit switch DI. It will be seen that during
relays HRI and HRZ. Relay HRI places alter
hating current on the a wire and connects the
two polarized relays PR (-{-) and PR (_) in
multiple to the l? wire. Relay HR! closes the
circuit of relay DTR which operates and locks
up over a iront Contact of relay RI R. The dial
ling tone is thus removed from the calling line
during the remainder of the connection. Relay
RIR is a slo-w release relay which controls the
release of the register and performs other func- »
tions as described in my co-pending application
referred to. It does not fall olf during the short
time the line circuit is open when the dial is
the 25 to 50 milli-seconds the line circuit is opened
at the end of each selection, the following opera
tions take place in the order given: Relay DR re
leases, relay RBR releases, relay HRI operates.
All this can easily take place in the minimum per
missible time of 25 milli-seconds. The 1ine circuit
need remain closed 15 milli-seconds to cause relay
HRZ to break its back Contact and release relay
RllR.
Although the invention has been described as
applied to a multi-potential selector system of the
kind described in my copending application Serial
No, 521,160, filed February 5, 1944, it will be ap
pulled to the finger stop. After the momentary
preciated that it is equally applicable to any type
opening of the line the circuit is again closed at GI)
of selector system in which the operation of
this time through the rectifier', as described in
switching apparatus is controlled by trains of elec
connection with Fig. 2. The ñrst pulse is always
trical pulses.
a positive pulse and thus relay PR (-|-) operates.
Moreover
while
the
detailed
description
spe
In so doing it deßenergizes magnet DI which
_ciñcally describes subscriber dialling circuits, the
advances the first digit switch from position 0 to
invention is cf course equally applicable to im
position l. In position l the magnet DI is again
pulsing
over inter-of?ce trunks. In such an ar
energized, this time over the back contact of relay
rangement as applied to a system as disclosed in
PR (_) and brush .AI of switch PI. The opening
my co-pending application referred to,vthe im
of the back contact of relay PR (+) unbalances
pulsing mechanism corresponding to the dial
the differential relay DR which operates and
would be located in the A-register and the im
energizes relay RSR. Relay RSR closes an ener
pulse responding mechanism would be located inv
gizing circuit for the magnet of the in-control
the T-register. The scope of the invention is,
switch PI but the brushes of this switch are not
therefore, only to be construed as defined in the
advanced. Relay RSR retains energized relay
appended claims and numerous modiiications
RIR and over another front contact energizes
2,406,001
12
within the spirit of the invention will be readily
apparent to those skilled in the art.
What is claimed is:
l. In an electrical signaling system, a signaling
nating current, means for coupling said source of
alternating current to said signaling circuit, a
circuit, a uni-directional current conducting ele
ment, means for connecting said element in said
signaling circuit, a source of alternating current,
means for coupling said source of alternating cur
rent to said signaling circuit, means responsive to
direction of current flow, means for connecting l()
said last mentioned means to said circuit, means
second point, back contacts for each of said re
lays, means for intermittently reversing the con
nection of polarity of said uni-directional current
pair of oppositely polarized relays, means for con
necting said pair of relays to said circuit at said
for intermittently reversing the connection of po
larity of said uni-directional current conducting
element in said circuit and selective means con
`
means including said back contacts.
‘7. In a telecommunication system, an impuls
ing circuit extending between first and second
points, a uni-directional current conducting ele
ment, means for connecting said element in said`
impulsing circuit at said ñrst point, a source of
alternating current, means for coupling said
source of alternating current to said impulsing
circuit-- polarized relay means, means for con
necting said polarized relay means to said im
pulsing circuit at said second point, means for
trollable by said means responsive to direction of
current flow.
conducting element in said circuit, selective
means, and circuits for controlling said selective
'
2. In an electrical signaling system, a signaling
circuit, a, uni-directional current conducting ele
ment, means for connecting said element in said
signaling circuit, a source- of alternating current,
periodically reversing the connection of polarity
means for coupling said source of alternating cur
of said uni-directional current conducting ele
ment in said impulsing circuit, selective means
at said second point and means for actuating said
selective means under the control of said polar
ized relay means.
rent to said signaling circuit, polarized relay
means, means for connecting said polarized relay
means to said circuit, means for intermittently re
versing the connection of polarity of said uni
directional current conducting element in said
8. In a telecommunication system, >an impuls
circuit and selective means controllable by said
ing circuit extending between first and second
polarized relay means.
points, a uni-directional current conducting ele
3. In an electrical signaling system, a signaling
circuit extending between ñrst and second points, 30 ment, means for connecting said element in said
impulsing circuit at said first point, a source of
a uni-directional current conducting element,
alternating current, means for coupling said
means for connecting said element in said signal
source of alternating current to said impulsing
ing circuit at said ñrst point, a source of alter
circuit, a pair of oppositely polarized relays,
nating current, means for coupling said source of
means for connecting said pair of relays to said
alternating current to said signaling circuit, di
circuit at said second point, back contacts for
rection of current responsive means connected to
eacn of said relays, means for periodically revers
said circuit -at said second point, means for in
ing the connection of polarity of said uni-direc
termittently reversing the connection of polarity
tional current conducting element in said impulsm
of said uni-directional current conducting ele
ing circuit, selective means at said second point
ment in said circuit and selective means con
and circuits for controlling said selective means
trollable by said direction of current responsive
including said back contacts.
means.
9. An impulsing circuit according to claim 8,
4. In an electrical signaling system, a signaling
wherein said selective means comprises a chain
circuit extending between iirst and second points.
of counting relays, a set of code relays, circuits
a uni-directional current conducting element,
for said code relays controlled by said counting
means for connecting said element in said sig
relays and circuits for successively energizing said
naling circuit at said first point, a source of al
counting relays responsive to the alternate open
ternating current, means for coupling said source
ing of said back contacts of said polarized relays.
of alternating current to said signaling circuit,
l0. In a telephone system, a sub-station cir
polarized relay means, means for connecting said
cuit, a register controller, means for completing
polarized relay means to said circuit at said sec
an impulsing circuit between said sub-station cir
ond point, means for intermittently reversing the
cuit and said register controller, a signaling de
connection of polarity of said uni-directional cur
vice including a uni-directional current conduct
rent conducting element in said circuit and se
lective means controllable by said polarized relay 55 ing element in said sub-station circuit, a source
of alternating current, means for coupling said
source of alternating current to said impulsing
5. In an electrical signaling system, a signaling
circuit extending between first and second points,
circuit at said register controller, polarized relay
a uni-directional current conducting element,
means at said register controller, means for con
means for connecting said element in said signal 60 necting said polarized relay means to said im
ing circuit at said first point, a source of alter->
pulsing circuit, means included in said signaling
nating current, means for coupling said source of
device for reversing the connection of polarity
alternating current to said signaling circuit, a
of said uni-directional current conducting ele
pair of oppositely polarized relays, means for con
ment in said impulsing circuit a variable and pre
necting sai-d pair of relays to said circuit at said 65 determined number of times, digit storing means
second point, means `for intermittently reversing
in said register controller and means for actu
the connection of polarity of said uni-directional
ating said digit storing means under the control
current conducting element in said circuit, and
of said polarized relay means.
selective means controllable by said pair of po
ll. In a telephone system, a sub-station circuit,
means.
larized relays.
'
t
Y
.
'
_
6. In an electrical signaling system, a signaling
circuit extending between ñrst and second points,
a uni-directional current conducting element,
means for Vconnecting said element in said signal
ing circuit at said ñrst point, a source of alter
70
a register controller, means for completing an im
pulsing circuit between said sub-station circuit
and said 'register controller, a signaling device
including a uni-directional current conducting
element in said sub-station circuit, a source of
2,406,001
13
alternating current, means for coupling said
source of alternating current to said impulsing
circuit at said register controller, a pair of oppo
sitely polarized relays, means for connecting said
pair of oppositely polarized relays to said impuls
ing circuit at said register controller, back con
tacts for each of said relays, means included in
said signaling device for reversing the connection
14l
ing means over circuits including said back con
tacts.
l5. In a telecommunication system, an impuls
ing circuit comprising tWo conductors extending
between first and second points, a uni-directional
current conducting element, means for connect
ing said element in said impulsing circuit at said
first point, a source of alternating current at said
of polarity of said uni-directional current con
second point, a line relay and polarized relay
ducting element in said impulsing circuit a vari 10 means at said second point, means for connecting
able and predetermined number of times, digit
said line relay to said impulsing circuit at said
storing means in said register controller and
second point, a signaling device at said first point,
means for actuating said digit storing means over
means responsive to initial operation of said sig
circuits including said back contacts.
naling device to open momentarily said impulsing
12. In a telecommunication system, an impuls 15 circuit to cause said line relay to connect said
ing circuit extending between ñrst and second
source of alternating current to one of said con
points, a uni-directional current conducting ele
ductors and to connect said polarized relay means
ment, means for connecting said element in said
to the other of said conductors at said second
impulsing circuit at said first point, a source of
point, means responsive to further operation of
alternating current, a signaling device at said 20 said signaling device for reversing the connection
ñrst point, means responsive to initial operation
of polarity of said uni-directional current con
of said signaling device for connecting said source
ducting element in said impulsing circuit a vari
of alternating current to said impulsing circuit
able and predetermined number of times, selec
at said second point, means responsive to fur
tive means at said second point and means for
ther operation of said signaling device for revers
actuating said selective means under the control
ing the connection of polarity of said uni-direc
` of said polarized relay means.
tional current conducting element in said impuls
16. In an electrical signaling system, a signal
ing circuit a variable and predetermined number
ing circuit, a uni-directional current conducting
of times, means responsive to direction of cur
element, means for connecting said element in
rent flow, means for connecting said last men 30 said signaling circuit, a source of alternating cur
tioned means to said impulsing circuit at said
rent, meansfor coupling said source of alternat
seco-ncl point, selective means at said second point
ing current to said signaling circuit, a pair of re
and means for actuating said selective means un
lays, means for connecting each of said relays to
der the control of said means responsive to di
said signaling circuit over oppositely poled recti
rection of current flow.
ñer elements, means for intermittently reversing
13. In a telecommunication system, :an impuls
the connection of polarity of said uni-directional
ing circuit extending between ñrst and second
current conducting element in said circuit and
points, a uni-directional current conducting ele
selective means controllable by said relays.
ment, means for connecting said element in said
17. In an electrical signaling system, a signal
impulsing circuit at said ñrst point, a source of di) ing circuit extending between ñrst and second
alternating current, a signaling device at said
points, a uni-directional current conducting ele
first point, means responsive to initial operation
ment, means for connecting said element insaid
of said signaling device for connecting said source
signaling circuit at said ñrst point, a source of
of alternating current to said impulsing circuit
alternating current, means for coupling said
at said second point, means responsive to further
source of alternating current to said signaling
operation of said signaling device for reversing
circuit, a pair of relays, means for connecting each
the connection of polarity of said uni-directional
of said relays to said signaling circuit at said sec
current conducting element in said impulsing cir
ond point over oppositely poled rectiiier elements,
cuit a variable and predetermined number of
means for intermittently reversing the connec
times, a pair of oppositely polarized relays, means
tion of polarity of said uni-directional current
for connecting said pair of relays to said impuls
conducting element in said circuit and selective
ing circuit at said second point, back contacts
means controllable by said relays.
for each of said relays, selective means at said
18. In a telephone system, a sub-station circuit,
second point and circuits for controlling said se
a register controller, means for completing an
lective means including said back contacts.
impulsing circuit between said sub-station circuit
14. In a telephone system, a sub-station circuit,
and said register controllen'a signaling device
a register controller, means for completing an
including a uni-directional current conducting
impulsing circuit between said sub-station cir
eîement in said sub-station circuit, a source of
cuit and said register controller, a signaling de
alternating current, means for coupling said
vice including a uni-directional current conduct G O source of alternating current of said impulsing
ing element in said sub-station circuit, a source
circuit at said register controller responsive to
of alternating current, means responsive to an
the completion of said impulsing circuit, relay
initial operation of said signaling device for con
means at said register controller responsive to
necting said source of alternating current to said
direction of current ñow, means for connecting
impulsing circuit at said register controller, means
said relay means to said impulsing circuit, means
responsive to a further operation of said signal
included in said signaling device for reversing the
ing device for reversing the connection of polarity
connection of polarity of said uni-directional cur
of said uni-directional current conducting ele
rent conducting element in said impulsing circuit
ment in said impulsing circuit a variable and
a variable and predetermined number or" times,
predetermined number of times, a pair of oppo 70 digit storing means in said register controller and
sitely polarized relays, means for connecting said
means for actuating said digit storing means
pair of polarized relays to said impulsing circuit
under the control of said relay means.
at said register controller, back contacts for each
19. In a telecommunication system, an impuls
of said relays, digit storing means in said register
ing circuit extending between iirst and second
controller and means for actuating said digit stor 75 points, a uni-directional current conducting ele
2,406,001
15Y
16
ment, means for connecting said element in said
inipulsing circuit at said first point, a source of
alternating current, means for coupling said
source or" alternating current to said impulsing
circuit, a pair of pulsing relays responsive to op
posite directions of current flow, means for con
necting said relays to said impulsing circuit at
said second point, ñrst and second selective means
lay means from said ñrst selective means to said
at said second point, means for periodically re
versing the direction of polarityof said uni-direc
tional current conducting element in said impuls
ing circuit a predetermined and Variable nurnber
of times, means for actuating said first selective
means under the control of said pair of relays, a
differential relay having a pair of windings, means
for alternately energizing the said windings under
the control of said pair of pulsing relays during
the transmission of impulses to hold said difieren
tial relay operated, and means actuated by the
relapse of said differential relay on the termina
tion of the transmission of impulses for transfer
ring the control exercised by said pair of pulsing
relays from said first selective means to said sec
ond selective means.
20. In a telecommunication system, an impuls
ing circuit extending between iirst and second
points, a uni-directional current conducting ele
ment, means for connecting said element in said
second selective means.
22. A signaling system` according to claim 12
further comprising means for normally short
ircuiting said uni-directional current conducting
element, means for removing said short-circuit
when said signaling device is initially operated
and means for momentarily opening said im
pulsing circuit during the `further operation of
10 said signaling device.
23. In a telecommunication system an impuls
ing circuit extending between ñrst and second
points, a uni-directional current conducting ele
ment, means for connecting said element in said
impulsing circuit at said iirst point, a source of
alternating current, means for coupling said
source of alternating current to said impulsing
circuit, a pair of relays responsive to opposite
directions of current iiow, means for connecting
said relays to said impulsing circuit at said second
point, means for periodically reversing the con
nection of polarity of said uni-directional current
conducting element in said impulsing circuit, a
selector switch at sai@l second point and means for
actuating said selector switch under the control
of said pair of relays.
24. 1n a telecommunication system, an impuls
ing circuit extending between ñrst and second
points, a uni-directional current conducting ele
alternating current, means for coupling said 30 ment, means for connecting said element in said
impulsing circuit at said ñrst point, a source of
source of alternating current to said impulsing
alternating current, means for connecting said
circuit, a pair of cppositely polarized relays, means
source of alternating current to said impulsing
for connecting said relays to said impulsing cir
circuit, a pair of relays responsive to opposite
cuit at said second point, back contacts for said
directions of current flow, means for connecting
relays, first and second selective `mea-ns at said
said relays to said ímpulsing circuit at said second
second point, means for periodically reversing the
point, means for periodically reversing the con
connection of polarity of said uni-directional cur
nection of polarity of said uni-directional cur
rent conducting element in said impulsing circuit
rent conducting element in said impulsing cir
a predetermined and variable number of times,
circuits including said back contacts for control 40 cuit, a selector switch at said second point, a
control magnet for said selector switch, and av
ling the actuation of said first and second selec
circuit for said control magnet directly controlled
tive means, a diñerential relay having a pair of
by contacts actuated by said pair of relays.
windings, means under the control of said back
25. In a. telecommunication system, an impuls
contacts for alternately energizing the windings
ing circuit extending between first and second
or' said differential relay during the transmission '
points, a uni-directional current conducting ele
of impulses to hold said diiîerential relay oper
ment, means for connecting said, element in said
ated, and means actuated by the relapse of said
impulsing circuit at said ñrst point, a source of
differential relay on the termination of the trans
alternating current, means for connecting said
mission of impulses for transferring the control
source of alternating current to said impulsing
"30
exercised by said pair of polarized relays from
circuit, a pair of relays responsive to opposite
saidh ñrst selective means to said second selective
directions of current now, back contacts for each
means.
of said relays, means for connecting said relays
21. In a telecommunication system, an impuls
to said impulsing circuit at said second point,
ing circuit extending between first and second
means for periodicahy reversingr the connection
points, an impulsing device, means for connecting
of polarity of said uni-directional current con
said impulsing device to said impulsing circuit at
ducting element in said impulsing circuit, a selec
said ñrst point, impulse responding relay means
tor switch at said second point, a control magnet
at said second point, means for connecting said
for said selector switch and circuits for said con
impulse responding relay means to said impulsing
trol magnet extending over said back contacts of
circuit, first and second selective means at said
said relays.
second point, means for actuating said impulsing
26. In a telecommunication system an impuls
device to send a predetermined and variable num
ing circuit extending between ñrst and second
ber of impulses over said impulsing circuit, means
points, a uni-directional current conducting ele
for actuating said first and second selective
ment, means for connecting said element in said
means under the control of said impulse respond
impulsing circuit at said first point, a source of
ing relay means, a diíerentia-l relay having a
alternating current, means for connecting said
pair of windings, means for alternately energiz
source of alternating current to said impulsing
ing said windings under the control of said im
circuit, a pair of oppositely polarized relays, means
for connecting said relays to said impulsing cir
pulse responding relay means during the trans
cuit at said second point, means for reversing the
mission oí impulses to hold said differential re
lay operated, and means actuated by the relapse
connection of polarity of said uni-directional cur
rent conducting element in said impulsing circuit
of said differential relay on the termination of
a predetermined and variable number of times,
the transmission of impulses for transferring the
iirst and second selector switches at said second
control exercised by said impulse responding re
impulsing circuit at said first point, a source oi
2,406,001
17
18
point, control switch for transferring a control
exercised by said polarized relays from said first
switch to said second switch, a differential relay
having a pair of windings, means for alternately
energizing the said windings under the control of
said pair of polarized relays during the trans
mission of impulses, and means actuated by the
relapse of said differential relay on the termina
tion of the transmission of impulses to operate
transmission of a train of impulses, means for
momentarily opening said line circuit at the end
of said train of impulses, and means actuated by
the resultant relapse of said differential relay to
advance said in-control switch to transfer the
control from said iirst digit switch to said second
digit switch.
28. In a telecommunication system, an impuls
ing circuit extending between ñrst and second
said control switch.
Hl points, a rectifier, means for connecting said
27. In a telephone system a line circuit, a
rectiñer in said impulsing circuit at said first
register controller, means for completing an im
point, a source of alternating current, means for
pulsing circuit between said line circuit and said
register controller, a signaling device including a
connecting said source of alternating current to
said impulsing circuit at said second point, a pair
rectifier in said line circuit, a. source of alternat 15 of relays responsive to opposite directions of cur
ing current, means for coupling said source of
rent ñow, means for connecting said relays to said
alternating current to said line circuit at said
impulsing circuit at said second point, ñrst and
register controller, a pair of oppositely polarized
second selective means at said second point,
relays at said register controller, means for con
means for intermittently reversing the connection
necting said polarized relays to said line circuit, 20 of polarity of said rectifier in said impulsing cir
means in said signaling device for reversing the
cuit a predetermined and variable number of
connection of polarity of said rectifier in said line
times, circuits including contacts of said pair of
circuit a variable and predetermined number of
relays for actuating said ñrst and second selective
times, first and second digit storing switches in
means, means for momentarily opening said line
said register controller, an in-control switch for
circuit
on the termination of a series of rectifier
transferring the control by said polarized relays 25 reversals, and means responsive to said opening
from said ñrst switch to said second switch, a
for transferring the control by said polarized re
differential relay having a pair of windings, means
lays from said first selective means to said second
for alternately energizing the said windings under
selective means.
the control of said polarized relays during the 30
GERALD DEAKIN.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 737 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа