US2434910A - Electrical impulse sending device - Google Patents

Electrical impulse sending device Download PDF

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Publication number
US2434910A
US2434910A US583478A US58347845A US2434910A US 2434910 A US2434910 A US 2434910A US 583478 A US583478 A US 583478A US 58347845 A US58347845 A US 58347845A US 2434910 A US2434910 A US 2434910A
Authority
US
United States
Prior art keywords
rectifier
finger
contacts
wheel
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US583478A
Other languages
English (en)
Inventor
Deakin Gerald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL70470D priority Critical patent/NL70470C/xx
Priority to BE466097D priority patent/BE466097A/xx
Priority to BE467162D priority patent/BE467162A/xx
Priority to NL70511D priority patent/NL70511C/xx
Priority claimed from US523626A external-priority patent/US2406001A/en
Priority to US527921A priority patent/US2433347A/en
Priority to GB24603/44A priority patent/GB605049A/en
Priority to US583478A priority patent/US2434910A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR938184D priority patent/FR938184A/fr
Priority claimed from US723446A external-priority patent/US2502440A/en
Priority to CH265061D priority patent/CH265061A/fr
Priority to CH269356D priority patent/CH269356A/de
Priority to FR58602D priority patent/FR58602E/fr
Publication of US2434910A publication Critical patent/US2434910A/en
Application granted granted Critical
Priority to DEI3006A priority patent/DE869502C/de
Priority to DEI3002A priority patent/DE857821C/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of DC signals of alternating polarity, coded pulses or impedance dialling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of DC pulses
    • H04Q1/34—Impulse regenerators with mechanical or other non-electrical marking arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Definitions

  • cation 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 first point to a second point, for example, from a substation or the like to a control exchange or other position where selecting equipment is located.
  • the pulse cycle of the standard interrupter dial circuit at present used in automatic telephone exchange systems consists of a closure and an opening of a. single stepping relay direct current circuit with a 60/40 rat o of opening to clo-- sure. One digit is recorded per cycle, and the opening of the circuit is the useful part of the cycle; the closure of the circuit represents time unavo dably wasted to prepare the circuit to receive the next ulse.
  • the compete pulse cycle consists of two pulses, a positive pulse and a negative pulse ea ch one u eful in recording a-digit as well as in assisting the restorat on ,of the relay which is operated by the preceding pulse of opposite polarity.
  • the positive and ne ative pulses consist in fact of tra ns of positive and negative pulses at the periodicity of the alternating current source, but
  • An ob ect of the present invention is the provision of a simple and efiective device for intermittently reversing the polarity of a uni-directional current conducting device in the line circult, a. predetermined and variablenumber of times.
  • Fig. 1 is a circuit diagram of a subscriber set circuit provided with a rectifier dial for use in a system, as described in my copending applica Fig, 6 shows a detail of the spring nest in the rectifier dial.
  • the subscriber set circuit shown therein is apart from the rectifier dial of the usual type.
  • the rectifier dial which will be described later in connection with Figs. 2 to 6 includes a rotatin rectifier R and a home contact spring nest S.
  • the operation of the rectifier dial from a circuit point of view is as fol lows: When the fin er wheel is moved off normal 2.
  • pin P3 allows spring B to break contact with spring C which removes ashort circuit from the rectifier R, and to make contact with s ring A which short circuits the induction coil and tr nsmitter.
  • Pin Pl causes spring F to break contact with spring G until shortly before the first finger hole reachesthe finger stop: in other words, the line circuit is momentari y opened each time the'fin er wheel is turned to the finger stop.
  • Ratchet wheel I and a gear wheel I l are attached't'oeach other and rotate'f'reelv on the lower extensionofshaft li They'areheld hr positionbythe fiat head i'la' of a bearingpi'n I 2" when the lower part 2 housing the-rectifierunit is mounted imposition.
  • Hatchetwheel II has a number of teeth corresponding to the number of positions of the no ger wheel 3. Everyot'her tooth is relatively long (in a radial sense).
  • the segment 1 moves clockwise and-when it has" moved an angular distanceequaI to about one' fingerholespacing the raised surface I l no longer bears on the pawlil and the latter rotates sl ghtly about its pivot so as to" engage both the long and the short teeth of the ratchet wheel Ill.
  • the finger wheel be turned a distance equal to five fingerhol'es; that is; should the'd'igitlrbe dialed; since there i's'a space equal to twofingerholes between the hole number I and the finger stop 19;
  • The-home springnext consists of five springs insulating material 30 fixed to the upper housing I.
  • Two pins PI and P3 are mounted on the se ment 1 in such position that when the finger wheel is moved off normal, pin Pl opens the contact between springs F and'G', whilstpin P3 opens the-contact between springsB and C and permits contact to be made between springs A and B.
  • the segment I is of insulating material.
  • bearing' pin I 2- which passes through the bushing; 2'l has screwed toit a gear wheel-23 and rotatesin bushings 24 attached to the upper and lower covers of the rectifier housing 2;
  • Thebearing pin I2 is grooved so that when it is slipped through the bore of'the bushing 2
  • the external connections are connected to the" collector rings 24a and 24b.
  • G'earwheclsll and 23 are interconnected by pinions 25which are attached toeach other and held in position by a: bearing pin 26 mounted in the lower end of'the housing portion 2.
  • the ratchet and gear wheels are assembled so that when the wheel lB-is in the position shown in Fig. 4 therotatin Titantifier'unit S is in the position shown in Fig. 5.
  • the ratio of the various gears is such that the rectifier unitS makes one complete revolution when the finger wheel 3 moves an angular distance equal to twofinger holespaces;
  • the setting of brushes 20a and 20b; Fig; 5, is such that when they engage the insulating surfaces 2T between the collector rings Zia" and 23b aspositi on 2 of the ratchet wheel passes the normal position I' on the return journey; the pi'nPt engages lip !6 of the spring F and opens the contact between springs Fahd Gi Thus the contact between these springsis opened” before the-- brushes 28a and-20h make contact with theisuc'
  • speed control of a rectifier dial is not critical it is sufiicient to weight the brushes 20a and 2% at their ends so that they act both as governor Wings as Well as collector brushes.
  • rectifier dial of my invention is not to be construed as limited to this construction since many modifications coming within the scope of the appended claims will readily occur to those versed in the art. Moreover as will be appreciated the rectifier dial of my invention is applicable for use in any type of selector system in which the operation of switching apparatus is controlled by trains of impulses.
  • a pulsing device for a telecommunication switching system comprising a uni-directional current conducting element, a pair of contacts for connecting said element in signalling circuit, means for connecting two output electrodes of said element respectively to said contacts and means between said contacts and said element for rotating said element and said means for connecting with respect to said contacts whereby the polarity of said element with respect to said contacts is intermittently reversed a predetermined and variable number of times.
  • a pulsing device for a telecommunication switching system comprising a rectifier, contacts for connecting said rectifier in an external signalling circuit and means between said contacts and said element for rotating said rectifier with respect to said contacts whereby the direction of polarity of said rectifier with respect to said contacts is reversed a predetermined and variable number of times.
  • a pulsing device for a telecommunication switching system comprising a unidirectional current conducting element, contacts for connecting said rectifier in an external signalling circuit, a rotatable member, means for turning said rotatable member a variable angular distance, and means between said contacts and said element under the control of said rotatable member for rotating said element with respect to said contacts whereby the direction of polarity of said element is reversed with respect to said contacts a predetermined number of times dependent upon the extent of the angular movement of said rotatable member.
  • a pulsing device for a telecommunication switching system comprising a dry contact rectifier, contacts for connecting said rectifier in signalling circuit. a rotatable member, manually operable means for turning said rotatable member a variable angular distance, and a commutator device under the control of said rotatable member for rotating said element with respect to said contacts whereby the direction of polarity of said rectifier is reversed with respect to said contacts a predetermined number of times dependent upon the extent of the angular displacement of said rotatable member.
  • a pulsing device for a telecommunication switching system comprising a uni-directional current conducting device, contacts for connecting said device in a signalling circuit, a first rotatable member, a second rotatable member, means for turning said first rotatable member a variable angular distance from a normal position against the tension of a, spring, means for coupling said first rotatable member to said second rotatable member during its return movement to said normal position, and a rotary commutator device controlled by the rotation 01 said second rotatable member for reversing the direction of polarity of said uni-directional current conducting device with respect to said contacts a predetermined number of times dependent upon the extent of the angular displacement of said first rotatable member.
  • a pulsing device according to claim 5 wherein means is provided for insuring that said commutator device always returns to a rest position in which said uni-directional current conducting device has a predetermined polarity with respect to said contacts.
  • a pulsing device for a telecommunication switching system comprising a rotatable finger hole disc, a rotatable ratchet wheel, spring means for returning said disc to a fixed normal position, a pawl for rotating said ratchet wheel during the return movement of said finger hole disc, a rectifier element mounted on a spindle to rotate in bearings, a pair of diametrically arranged brushes mounted on said rectifier element and electrically connected to the two electrodes thereof, a pair of substantially semi-circular segmental contacts adapted to be engaged by said brushes during the rotation of said rectifier element and a mechanical coupling between said ratchet wheel and said spindle.
  • a pulsing device wherein alternate teeth of said ratchet wheel are of increased radial length and means is provided for adjusting the position of said pawl as the said finger hole disc approaches its position of rest so that said pawl always engages a long tooth when the said disc is in its rest position.
  • a pulsing device further comprising a plurality of contact springs, a plate mounted to rotate with said finger disc and a pin mounted on said plate and arranged to actuate said contact springs when said finger disc is moved out of its position of rest.
  • a pulsing device for a telecommunication switching system comprising a rotatable finger hole disc, means for turning said disc a variable angular distance from its normal position against the tension of a spring, a rotatable member, means for coupling said disc to said member during the return movement of the disc to its normal position, a dry contact rectifier, contacts for connecting said rectifier in a signalling circuit and means actuated by said rotatable member on the return movement of said disc to reverse the direc tion of polarity of said rectifier with respect to said contacts a predetermined number of times dependent upon the angular displacement of said disc.
  • a pulsing device in which said pair of contacts for connecting said element in a signalling circuit comprises a pair of essentially semicircular contacts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Telephone Set Structure (AREA)
US583478A 1944-02-24 1945-03-19 Electrical impulse sending device Expired - Lifetime US2434910A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
NL70470D NL70470C (enrdf_load_stackoverflow) 1944-02-24
BE466097D BE466097A (enrdf_load_stackoverflow) 1944-02-24
BE467162D BE467162A (enrdf_load_stackoverflow) 1944-02-24
NL70511D NL70511C (enrdf_load_stackoverflow) 1944-02-24
US527921A US2433347A (en) 1944-02-24 1944-03-24 Telecommunication system
GB24603/44A GB605049A (en) 1944-02-24 1944-12-08 Electrical signalling
US583478A US2434910A (en) 1944-02-24 1945-03-19 Electrical impulse sending device
FR938184D FR938184A (fr) 1944-02-24 1946-03-27 Perfectionnements aux envoyeurs d'appel et appareils analogues
CH265061D CH265061A (fr) 1944-02-24 1947-02-18 Installation de signalisation.
CH269356D CH269356A (de) 1944-02-24 1948-01-12 Signalsendeeinrichtung.
FR58602D FR58602E (fr) 1944-02-24 1948-01-22 Perfectionnements aux envoyeurs d'appel et appareils analogues
DEI3006A DE869502C (de) 1944-02-24 1950-10-01 Stromstossgeber fuer Fernmeldeanlagen
DEI3002A DE857821C (de) 1944-02-24 1950-10-01 Stromstossgeber

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US523626A US2406001A (en) 1944-02-24 1944-02-24 Electrical signaling system
US583478A US2434910A (en) 1944-02-24 1945-03-19 Electrical impulse sending device
US723446A US2502440A (en) 1947-01-21 1947-01-21 Variable impulse transmitter

Publications (1)

Publication Number Publication Date
US2434910A true US2434910A (en) 1948-01-27

Family

ID=27414872

Family Applications (1)

Application Number Title Priority Date Filing Date
US583478A Expired - Lifetime US2434910A (en) 1944-02-24 1945-03-19 Electrical impulse sending device

Country Status (7)

Country Link
US (1) US2434910A (enrdf_load_stackoverflow)
BE (2) BE467162A (enrdf_load_stackoverflow)
CH (2) CH265061A (enrdf_load_stackoverflow)
DE (1) DE869502C (enrdf_load_stackoverflow)
FR (2) FR938184A (enrdf_load_stackoverflow)
GB (1) GB605049A (enrdf_load_stackoverflow)
NL (1) NL70470C (enrdf_load_stackoverflow)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US316686A (en) * 1885-04-28 van hoevenbeegh
US1251249A (en) * 1915-01-18 1917-12-25 Joseph H Lehman Combined timer, distributer, and current-reversing device.
US1415369A (en) * 1917-10-30 1922-05-09 Joseph H Lehman Electric-current making, breaking, and reversing device
US1743711A (en) * 1925-11-21 1930-01-14 Bell Telephone Labor Inc Supervisory system
US2052057A (en) * 1929-01-04 1936-08-25 Reid Frederick Fire alarm system
US2136630A (en) * 1935-08-13 1938-11-15 Bell Telephone Labor Inc Telephone system
US2259334A (en) * 1937-08-25 1941-10-14 Ass Telephone & Telegraph Co Impulse sending arrangement for use in telephone or like systems

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US316686A (en) * 1885-04-28 van hoevenbeegh
US1251249A (en) * 1915-01-18 1917-12-25 Joseph H Lehman Combined timer, distributer, and current-reversing device.
US1415369A (en) * 1917-10-30 1922-05-09 Joseph H Lehman Electric-current making, breaking, and reversing device
US1743711A (en) * 1925-11-21 1930-01-14 Bell Telephone Labor Inc Supervisory system
US2052057A (en) * 1929-01-04 1936-08-25 Reid Frederick Fire alarm system
US2136630A (en) * 1935-08-13 1938-11-15 Bell Telephone Labor Inc Telephone system
US2259334A (en) * 1937-08-25 1941-10-14 Ass Telephone & Telegraph Co Impulse sending arrangement for use in telephone or like systems

Also Published As

Publication number Publication date
BE467162A (enrdf_load_stackoverflow)
CH269356A (de) 1950-06-30
FR58602E (fr) 1954-03-02
CH265061A (fr) 1949-11-15
NL70470C (enrdf_load_stackoverflow)
FR938184A (fr) 1948-09-07
GB605049A (en) 1948-07-15
DE869502C (de) 1953-03-05
BE466097A (enrdf_load_stackoverflow)

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