US2713615A - Electronically operated and controlled switch - Google Patents

Electronically operated and controlled switch Download PDF

Info

Publication number
US2713615A
US2713615A US305192A US30519252A US2713615A US 2713615 A US2713615 A US 2713615A US 305192 A US305192 A US 305192A US 30519252 A US30519252 A US 30519252A US 2713615 A US2713615 A US 2713615A
Authority
US
United States
Prior art keywords
wiper
circuit
tube
switch
cathode
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
US305192A
Other languages
English (en)
Inventor
Harold J Mccreary
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
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 BE519234D priority Critical patent/BE519234A/xx
Priority to NL88385D priority patent/NL88385C/xx
Priority to BE520262D priority patent/BE520262A/xx
Priority to NLAANVRAGE7707231,A priority patent/NL179054B/xx
Application filed by Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Priority to US305192A priority patent/US2713615A/en
Priority to FR1077860D priority patent/FR1077860A/fr
Application granted granted Critical
Publication of US2713615A publication Critical patent/US2713615A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H63/00—Details of electrically-operated selector switches
    • H01H63/16—Driving arrangements for multi-position wipers
    • H01H63/18—Driving arrangements for multi-position wipers with step-by-step motion of wiper to a selector position
    • H01H63/20—Driving arrangements for multi-position wipers with step-by-step motion of wiper to a selector position using stepping magnet and ratchet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/02—Multi-position wiper switches
    • H01H67/04—Multi-position wiper switches having wipers movable only in one direction for purpose of selection
    • H01H67/06—Rotary switches, i.e. having angularly movable wipers

Definitions

  • This invention relates to an electronically operated and controlled switch of the type which may be used as a selecting switch in a telephone system.
  • One of the objects of this invention is to provide an electronically controlled and operated switch of simple, effective but inexpensive construction and design.
  • Another object of said invention is the simplification and reduction in the equipment needed for the operation and control of a switch to thereby reduce the problems inherent in the manufacture of the switches together with the problems inherent in their use and supervision.
  • a feature of this invention is the electronic means and circuit used to effectuate the stepping of the switch.
  • the switch is of a type used as a rotary linefinder switch in a telephone system wherein it would hunt and find one of a number of lines. Its use is not limited to the rotary type but may be easily adapted to a stepping switch having vertical and rotary motion or linear or radial motion.
  • a particular embodiment and modification of the invention is described, it should be appreciated that the invention is capable of use with any type selecting switch for controlling the operation of the switch to search for a particular object.
  • This embodiment utilizes a thyratron tube having a self-interrupted electromagnetic stepping means in its plate circuit for stepping the switch wiper.
  • the tube When the switch is idle, the tube is extinguished and the electromagnetic stepping means correspondingly inoperative.
  • a circuit is closed in any well known manner to raise the thyratron grid potential to a particular positive value with respect to the cathode to cause the tube to become conductive.
  • the plate circuit of the thyratron is in series with the stepping magnet so that the stepping magnet will not operate unless the thyratron is conducting.
  • the stepping magnet steps the rotary switch wiper in a self-interrupting manner until the switch wiper encounters the desired line.
  • the thyratron plate circuit is open each time the wiper is stepped, because of the self-interrupting springs opening at each step, the thyratron is deionized each time the wiper comes to rest on a new contact. On reaching the desired contact a circuit is completed which raises the positive potential of the cathode with respect to the grid so as to prevent the tube from again becoming conductive and thus prevent the further operation of the stepping magnet.
  • the cathode 10 is connected at a point between resistors 9 and 8.
  • the resistor 9 has a value of approximately ohms
  • the resistor 8 has a value of approximately 820 ohms
  • the resistor 7 a value of approximately 1000 ohms. This arrangement secures a drop in negative potential sufiieient to raise the cathode 10 to a positive potential of 2 /2 volts which is the equivalent of a 2 /2 volt negative potential on the grid.
  • Negative battery of approximately 48 volts is used. Under these conditions the gas in the tube will not ionize and conduct current.
  • resistors 14 and 15 act as a potentiometer. Resistor 15 being approximately 500,000 ohms and resistor 14 being approximately l0,00t) ohms result in a drop of negative potential which is sufiicient to raise the positive potential of a grid approximately 1 volt and thus cause the gas filled thyratron tube 13 to instantaneously ionize and become conductive to thus complete a circuit for operating stepping magnet 4 as follows: negative battery, resistor 9, cathode 10, plate 12, interrupter contact springs 5, winding of stepping magnet 4 to ground.
  • Stepping magnet 4 operates in a self-interrupted manner to step wiper 3 in any well known manner.
  • interrupter contact springs 5 open to break the plate circuit of tube 13 to thereby cause said tube to deionize and stepping magnet 4 to halt operation.
  • interrupter springs 5 close, the aforementioned circuit is again completed and tube 13 again ionizcs to again operate the stepping magnet 4 to thereby cause wiper 3 to be stepped to its next contact. This process is repeated until wiper 3 encounters contact 16 (as contacts 1 are closed in this particular illustration) in the bank contacts to thus short circuit resistor 7 in the cathode circuit.
  • the new cathode circuit will be as follows: negative battery, resistor 9, resistor 8, conductor 6, wiper 3, contact 16, contact 1 to ground. This approximately doubles the drop in negative potential on the cathode to thus bias the grid more negative with As interrupter springs 5 had opened just before wiper 3 encountered contact 16 the tube deionized as previously described and the new negative bias on the grid 11 prevents the ionization of the gas in the tube when interrupter springs 5 close to thus lock wiper 3 to contact 16.
  • a switch having a wiper, bank contacts accessible thereto and a self-interrupted electromagnet for stepping said wiper, means including a conductive electron tube for causing operation of said electromagnct for stepping said wiper over said contacts, said electron tube having plate and cathode circuits, said plate circuit in series with said electromagnet and interrupted when said electromagnet is interrupted to thereby render said tube non-conductive on each step to successive contacts of said bank contacts, and means rendering said tube conductive after each self-interruption of said electromagnet, for operating said electromagnet, said wiper connected to said cathode for preventing said tube from becoming conductive when said electromagnet has stepped said wiper to a predetermined contact to thereby halt the operation of said electromagnet and further stepping of said wiper.
  • a switch having a wiper, bank contacts accessible thereto and an electromagnet, having self-interrupting contacts, for stepping said wiper, means for causing the operation of said electromagnet to step said wiper over said bank contacts including a thyratron tube having a plate, grid and cathode circuits, a source of potential, said cathode circuit connected to said source of potential and having a resistor therein for securing a drop of potential to thereby prevent said tube from conducting current, said grid circuit having a potentiometer therein one end of which is connected to said source of potential thereby providing a specific potential on said grid, means for causing a drop in said specific potential on said grid of sufiicient value to cause said tube to conduct current, said plate circuit, self-interrupting contacts and said electromagnet completin a path for said current whereby said electromagnet is operated, said plate circuit interrupted to halt the flow of said current when said selfinterrupting contacts open in conjunction with said electromagnet stepping said wiper to
  • a stepping switch having a wiper, bank contacts accessible thereto, an clectromagnet having self-interrupting contacts for stepping said wiper, a source of potential, a thyratron tube having plate, grid and cathode circuits, a resistance element in said cathode circuit connected on one end to said source of potential and forming a circuit resulting in a drop of potential of sufiicient value as to prevent said tube from operating, another resistance element in said grid circuit connected on one end to said source of potential and forming a circuit on initiation of operation of said switch resulting in a drop of potential of suflicient value as to cause instantaneous operation of said tube, said electromagnet, self-interrupting contacts and plate forming a series circuit for operating said electromagnet to thereby step said wiper over said contacts on operation of said tube, said tube rendered alternately inoperative and operative on opening and closing of said self-interrupting contacts, said wiper connected to a point in said first resistance element and forming a circuit
  • a self-interrupted electromagnet for stepping said wiper, means for energizing said electromagnet comprising an electronic valve having plate, grid and cathode circuits, said electromagnet in said plate circuit, a circuit for biasing said grid with respect to said cathode to prevent current flow in said tube when said switch is idle, a source of potential, a circuit completed for said grid including said source of potential on initiation of operation of said switch for changing the bias of said grid with respect to said cathode to cause said valve to conduct current, said electromagnet energized thereby for stepping said wiper and for opening said plate circuit to extinguish said valve and thereby deenergizes itself, said valve thereafter conducting current for again energizing said magnet to step said wiper when said plate circuit is again completed, said source of potential connected to one contact of said bank, said wiper connected to said cathode circuit, and a circuit including said source of potential and part of said catho

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnets (AREA)
US305192A 1952-08-19 1952-08-19 Electronically operated and controlled switch Expired - Lifetime US2713615A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE519234D BE519234A (zh) 1952-08-19
NL88385D NL88385C (zh) 1952-08-19
BE520262D BE520262A (zh) 1952-08-19
NLAANVRAGE7707231,A NL179054B (nl) 1952-08-19 Werkwijze voor de omzetting van een alkylpiperidine tot een cyanopyridine.
US305192A US2713615A (en) 1952-08-19 1952-08-19 Electronically operated and controlled switch
FR1077860D FR1077860A (fr) 1952-08-19 1953-05-27 Circuit d'arrêt à action rapide pour commutateur à grande vitesse, notamment poursystèmes téléphoniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US305192A US2713615A (en) 1952-08-19 1952-08-19 Electronically operated and controlled switch

Publications (1)

Publication Number Publication Date
US2713615A true US2713615A (en) 1955-07-19

Family

ID=23179727

Family Applications (1)

Application Number Title Priority Date Filing Date
US305192A Expired - Lifetime US2713615A (en) 1952-08-19 1952-08-19 Electronically operated and controlled switch

Country Status (4)

Country Link
US (1) US2713615A (zh)
BE (2) BE519234A (zh)
FR (1) FR1077860A (zh)
NL (2) NL88385C (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955164A (en) * 1957-02-13 1960-10-04 Automatic Elect Lab Transistorized stopping circuit for electromagnetic switch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2242776A (en) * 1939-04-25 1941-05-20 Bell Telephone Labor Inc Telephone system
US2354682A (en) * 1943-05-06 1944-08-01 Int Standard Electric Corp Electric selection controlling circuit
US2502415A (en) * 1943-08-31 1950-04-04 Int Standard Electric Corp Line finder allotter circuit for telephone exchanges
US2616980A (en) * 1948-04-26 1952-11-04 Hartford Nat Bank & Trust Co Flip-flop circuit for operating a switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2242776A (en) * 1939-04-25 1941-05-20 Bell Telephone Labor Inc Telephone system
US2354682A (en) * 1943-05-06 1944-08-01 Int Standard Electric Corp Electric selection controlling circuit
US2502415A (en) * 1943-08-31 1950-04-04 Int Standard Electric Corp Line finder allotter circuit for telephone exchanges
US2616980A (en) * 1948-04-26 1952-11-04 Hartford Nat Bank & Trust Co Flip-flop circuit for operating a switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955164A (en) * 1957-02-13 1960-10-04 Automatic Elect Lab Transistorized stopping circuit for electromagnetic switch

Also Published As

Publication number Publication date
NL179054B (nl)
FR1077860A (fr) 1954-11-12
NL88385C (zh)
BE520262A (zh)
BE519234A (zh)

Similar Documents

Publication Publication Date Title
USRE22794E (en) G deakin
US2124410A (en) Relay apparatus
US2713615A (en) Electronically operated and controlled switch
US3239722A (en) Electrical control system
ES295718A1 (es) Dispositivo de red de conexiën
US3469151A (en) Multiple channel cut-off means
US2552174A (en) Automatic alarm selector
US2682019A (en) Fast stopping circuit for high-speed switches
US2577137A (en) Time-delay circuit
US2262458A (en) Electrical signaling or control system
US2454780A (en) Telecommunication switching system
US2082123A (en) Circuit control arrangements
US2691699A (en) Electronic stop control for motordriven switches having two-drive magnets
US3441809A (en) Electronic channel cut-off means
US2171348A (en) Electric valve time delay relay
US2304613A (en) Delayed operation circuit
US2524300A (en) Remote control system
US2327791A (en) Time delay apparatus
US1726163A (en) Time-measuring device
US2663763A (en) Time-limiting circuit arrangement
US2919309A (en) Electronic finder
US2052273A (en) Remote control circuit
US3538393A (en) Switching circuit
US2058170A (en) Marginal control of gas-filled tubes
US2834923A (en) Control circuits for rotary stepping switches