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US2999140A - Electro-magnetic coordinate switch - Google Patents

Electro-magnetic coordinate switch Download PDF

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Publication number
US2999140A
US2999140A US773441A US77344158A US2999140A US 2999140 A US2999140 A US 2999140A US 773441 A US773441 A US 773441A US 77344158 A US77344158 A US 77344158A US 2999140 A US2999140 A US 2999140A
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US
United States
Prior art keywords
bars
magnetic
contact
coordinate
windings
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
US773441A
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English (en)
Inventor
Dumousseau Claude Rene Jean
Touraton Emile
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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US2999140A publication Critical patent/US2999140A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/281—Mounting of the relay; Encapsulating; Details of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/30—Co-ordinate-type selector switches with field of co-ordinate coil acting directly upon magnetic leaf spring or reed-type contact member

Definitions

  • This invention relates to electromagnetic coordinate switches, and more particularly to the type of switch in which the magnetic fields, used to control selectively the closing of .an electric contact, act directly on the contact elements. It concerns in particular coordinate switches using sealed contacts, known usually in the art under the name of reed relay.
  • the directly actuated contacts known as reed contacts which are commercially available, are made up of two blades made of magnetic material, arranged inside a sealed glass tube and which may contain an inert gas.
  • the two blades are arranged in such a way that their free ends overlap but are spaced slightly apart from each other. When one contact of such type is placed in a magnetic field of suitable intensity, the two blades come into contact.
  • the :free ends of the blades may be provided with precious metal contacts, as it is well known in the contactor or the electromagnetic relay technique. A description of this type of device will be found in the .French Patent No. 852,275.
  • one of the objects of the present invention is the provision of a coordinate switch which per mits selective connections between 11 inputs and p outputs, and is of simple construction, especially from the point of view of the magnetic circuits used for the control of the elementary contacts.
  • FIG. 1 is a graph showing the operating characteristics of a known type of relay
  • FIG. 2 is a front elevation partly in section of a reed relay coordinate switch arrangement according to the invention.
  • FIG. 3 is a plan view partly in section of the multiconnected reed relay arrangement according to the invention.
  • FIG. 1 there is shown a graph of the operating characteristics of a known type of reed relay and whose ordinate is calibrated in ampere turns.
  • the graph shows curves of sample relays which have been tested and in which the margin of operation occurs between the range of 47.5 and 75 ampere turns.
  • the number of ampere turns may be decreased and as long as the magnetomotive force is not decreased nited States Patent below the value which would be developed by 20 ampere turns the relay will remain actuated.
  • the maintaining force is considerably less than the operating force.
  • FIGS. 2 and 3 there is shown one embodiment of our invention which consists of a coordinate switch comprising individual reed relays arranged in rows of ten each and actuated by common magnetic means, which will be later described in detail. It should be understood that more or fewer than 100 individual reed relays may be utilized without departing from the scope of our invention.
  • FIG. 2 is a front elevation, partly in section, of a coordinate switch device and which consists of a rectangular frame 1 made of magnetic material. In addition to supporting the elements making up the device, the frame acts as a magnetic shield for the whole assembly.
  • the individual reed relays which comprise an envelope, such as C10, in FIG. 3, are made of non-magnetic material through whose opposite ends a pair of contact blades 3, 4 are positioned. The free ends of the blades 3, 4 overlap but are spaced from each other a predetermined distance.
  • the overlapping portions may be provided with suitable contact material, such as a rare metal.
  • each envelope may be filled with an inert gas under suitable pressure and which gas will inhibit arcing of the contacts.
  • Each blade 4 is brought out at one end of its envelope and is mounted on a magnetic bar, such as N10, which extends transversely across the row of envelopes, shown in FIG. 3. It should be understood that there is a separate bar N11 N19 for the other rows of envelopes shown in FIG. 2.
  • the upper blades 3 are similarly mounted to bars N1 N9, as shown in FIG. 3. It will be seen that the bars N1 N9 are normal to the bars N10 N19. Each of the bars N10, N11, etc., cooperate with their individual windings B10, B11, etc., and these windings are shown to be staggered in FIG. 2, so that the bars may be nested more closely together.
  • the several bars extend through opposite sides of the frame .1 through magnetic joints 6. The frame 1 thus acts as a magnetic yoke for the several bars N1 N19.
  • first common winding 11 extending over all of the horizontal bars N10 N19 adjacent one end thereof, and there is a corresponding common winding 12 extending over the opposite ends of the same bars and their respective energizing windings.
  • common windings 13 and 14 extending over the windings Bi B9 and the corresponding windings at the other end of the bars N1 N9, respectively.
  • the common coils 11 and 13 are shown in section.
  • the several bars in both groups of horizontal and vertical bars may be electrically insulated from the frame 1 by any suitable means.
  • One such means would include a ferrite bushing (not shown) surrounding each bar at the opening 6 in the frame '1.
  • a ferrite bushing may be inserted in each of the bars at coordinate points so that the terminal ends of the contacts 3, 4:, may pass therethrough and separate electrical leads may be attached thereto. This gives an added advantage in that more than one pair of contacts in a row may remain actuated while the electrical circuits controlled thereby are mutually isolated.
  • This embodiment is not illustrated, but it will be apparent to those skilled in the art as to how this may be accomplished.
  • the embodiment shown in the rawing uses the several bars in each group as electrical conductors.
  • An electromagnetic coordinate switch comprising ,a switch frame, a group of spaced horizontal magnetic a separate one of said contact sets at each coordinate point of said horizontal and vertical bars and in fluxtransfer relation therewith, the selective energization of the said individual coil means associated with any horizontal and any vertical bar causing the generated flux to traverse the associated bars and operate the contact set located at the coordinate points thereof, and the energization of the said common flux, generating coil means associated with each group of horizontal and vertical bars causing the flux generated thereby to traverse all of said horizontal and vertical bars to maintain the operated contact set in operated condition after the said individual coil means are de-energized.
  • said common coil means comprises a pair of windings disposed on opposite portions of the bars of said groups, respectively, and adjacent opposite sides of said frame, each of said common coil windings extending over the individual coil windings adjacent the same side of said frame as said common coil winding.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
US773441A 1957-12-03 1958-11-12 Electro-magnetic coordinate switch Expired - Lifetime US2999140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR752918 1957-12-03

Publications (1)

Publication Number Publication Date
US2999140A true US2999140A (en) 1961-09-05

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ID=8705201

Family Applications (1)

Application Number Title Priority Date Filing Date
US773441A Expired - Lifetime US2999140A (en) 1957-12-03 1958-11-12 Electro-magnetic coordinate switch

Country Status (5)

Country Link
US (1) US2999140A (fr)
BE (1) BE573527R (fr)
CH (1) CH370127A (fr)
FR (1) FR1191307A (fr)
GB (1) GB887026A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348075A (en) * 1964-07-22 1967-10-17 Bell Telephone Labor Inc Circuit identifier

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110269421A (zh) * 2019-06-24 2019-09-24 无锡市启冠健康科技有限公司 一种矫正坐姿的学习椅

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2187115A (en) * 1939-03-02 1940-01-16 Bell Telephone Labor Inc Switching device
US2397123A (en) * 1943-04-30 1946-03-26 Bell Telephone Labor Inc Contact operation
US2535400A (en) * 1949-08-25 1950-12-26 Bell Telephone Labor Inc Multicontact dry reed relay
US2630506A (en) * 1949-12-30 1953-03-03 Bell Telephone Labor Inc Relay
US2821597A (en) * 1955-03-18 1958-01-28 Bell Telephone Labor Inc Register relay
US2836676A (en) * 1955-02-17 1958-05-27 Bell Telephone Labor Inc Sealed magnetic relay
US2902558A (en) * 1955-02-17 1959-09-01 Bell Telephone Labor Inc Laminated core dry reed relay

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2187115A (en) * 1939-03-02 1940-01-16 Bell Telephone Labor Inc Switching device
US2397123A (en) * 1943-04-30 1946-03-26 Bell Telephone Labor Inc Contact operation
US2535400A (en) * 1949-08-25 1950-12-26 Bell Telephone Labor Inc Multicontact dry reed relay
US2630506A (en) * 1949-12-30 1953-03-03 Bell Telephone Labor Inc Relay
US2836676A (en) * 1955-02-17 1958-05-27 Bell Telephone Labor Inc Sealed magnetic relay
US2902558A (en) * 1955-02-17 1959-09-01 Bell Telephone Labor Inc Laminated core dry reed relay
US2821597A (en) * 1955-03-18 1958-01-28 Bell Telephone Labor Inc Register relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348075A (en) * 1964-07-22 1967-10-17 Bell Telephone Labor Inc Circuit identifier

Also Published As

Publication number Publication date
GB887026A (en) 1962-01-10
FR1191307A (fr) 1959-10-19
CH370127A (de) 1963-06-30
BE573527R (fr) 1959-06-03

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