US2378986A - Polarized relay - Google Patents

Polarized relay Download PDF

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Publication number
US2378986A
US2378986A US527534A US52753444A US2378986A US 2378986 A US2378986 A US 2378986A US 527534 A US527534 A US 527534A US 52753444 A US52753444 A US 52753444A US 2378986 A US2378986 A US 2378986A
Authority
US
United States
Prior art keywords
yoke
relay
armature
coil
flux
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
US527534A
Other languages
English (en)
Inventor
Jr Emil Dickten
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.)
AT&T Corp
Original Assignee
Bell Telephone 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 NL65085D priority Critical patent/NL65085C/xx
Priority to BE475679D priority patent/BE475679A/xx
Priority claimed from US344898A external-priority patent/US2355909A/en
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US527534A priority patent/US2378986A/en
Application granted granted Critical
Publication of US2378986A publication Critical patent/US2378986A/en
Priority to CH266497D priority patent/CH266497A/fr
Priority to FR950512D priority patent/FR950512A/fr
Priority to GB21766/47A priority patent/GB625531A/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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/72—Driving arrangements between movable part of magnetic circuit and contact for mercury contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2236—Polarised relays comprising pivotable armature, pivoting at extremity or bending point of armature
    • 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
    • H01H51/284—Polarised relays

Definitions

  • This invention relates to an electromagnetic device and more particularly to a polarized relay of the type covered by my Patent No. 2,355,909 issued on August 15, 1944, of which the present application is a division.
  • One embodiment of the polarized relay described in the above-mentioned patent is a twoarmature structure having a core that terminates in a. soft iron U-shaped member or yoke which is kept normally saturated by a permanent magnet secured between the legs thereof.
  • An armature is provided on either side of the core which is normally unaffected by the force of the magnet since the armature, being separated by an air-' gap from a leg of the yoke, the latter oifers the flux. of themagnet a path of lower reluctance through itself and the magnet than through the the core produced by the current flowing in one direction opposes the permanent magnet flux in one leg of the yoke and aids the permanent magnet flux in the other leg of the yoke.
  • the permanent magnet provides sufiicient flux to normally maintain the iron of the yoke in the region of the non-linear portion of the saturation curve, the net increase in flux in the one leg of the yokewhere it is aided by the coil flux is negligible and the armature adjacent to it i unaffected.
  • the permanent magnet flux is opposed by the coil flux and an operating flux passes through the air-gap into the armature adjacent to this leg of the yoke causing it to become operated.
  • each armature of the relay is subjected to magnetic influence only when current flows through the coil and not otherwise, resulting thereby in a rugged and efiicient polarized relay.
  • the object of the present invention is to provide a relay structure of the same general polarized type as that described in the above-mentioned patent except that the armatures thereof are of the sealed-in contact type.
  • Fig. 1 is a perspective view of a relay embodying the invention
  • Fig.2 shows, in cross-section, a mercury type switch element applicable to the relay as an armature thereof; and I Fig. 3 shows, in cross-section, a magnetic type switch element which is also applicable to the relay as an armature thereof.
  • the relay comprises a supporting member or heel-piece 35 having a rear upturned ear 36 by which the relay may he supported on a relay mounting rack, and two ears 3! upturned on each side from the rear edges of the member 35 for supporting pile-ups of terminal lugs.
  • Each pile-up comprises three T- shaped lugs 38 which serve as terminals to which the terminals of the coil 39 and the terminals of the switch elements 40 and 4
  • the terminal lugs of these pile-ups are secured to the outer faces of the ears 3'!
  • screws 42 which extend through holes in the clamping plate 43, in the lugs 38 and into threaded holes in the ears 31, the lugs being insulated from the-ears 31, from the plates 43 and from each other by interposed strips of insulating material, and further insulated from the screws 42 by the usual sleeves of insulating material which surround the screws.
  • the forward end of the supporting member 35 is widened out to form a lower pole-piece -44.
  • Supported upon the member 35 intermediate its ends is a vertically extending core upon which the coil 39 is mounted and upon the upper end of the core the member 45 is secured both.
  • member 45 and core 39 being secured to the member 35 by the screw 46 or other suitable means.
  • Secured by its base to the outwardly extending end of member 45 by screw is an iron yoke ,the
  • a brace 52 of non-magnetic material is interposed between the members 35 and 45.
  • the upper end of the brace is provided 'with lugs 53 engaged between the shoulders 54 of the member 52 and the rear edge of the yoke 41 while the lower end of the brace is provided with lugs which engage in notches in the edges of the men1 ber 35 for holding the brace in its assembled position.
  • a permanent bar magnet 56 Suitably secured between the legs 43 and 49 of the yoke 41 is a permanent bar magnet 56.
  • the yok 41 serves as a keeper for magnet 56 and is so proportioned that it is normally practically saturated by the flux flowing therethrough from the magnet 56.
  • are provided with aligned embossed holes in which are positioned two sealed switch elements 40 and 4
  • These elements may be of any desired magnetically operable type, two such types suitable for use in the relay structure being disclosed in Figs. 2 and 3.
  • the armature-contact element disclosed in Fig. 2 may be of the type disclosed in Patent No. 2,247,493 issued to H. C. Harrison and C. E. Pollard on July 1, 1941.
  • This element comprises a tubular glass vessel 51 into the upper and lower ends of which are sealed the terminals 59 and 56.
  • the lower portion of the vessel is filled with a pool of mercury 60 into which the inner end of the lower terminal 58 extends and upon which an annular iron armature 6
  • the inner end of the upper terminal 59 extends downwardly inside of the armature 6
  • the vessel 51 is evacuated before it is sealed and is refilled with a gas such as hydrogen. If switch elements of this type are used in the relay, they are so positioned in the aligned holes in the pole-pieces thereof that the lower ends of their armatures 6
  • This relay if provided with switch elements of the type just described, functions as follows:
  • the normally permanent magnet flux flows through the yoke 41 and the operating flux produced by the energization of the coil 39 will tend to flow from the pole-piece 50 to the polepiece 44 across the air-gaps between the armature 6
  • the force due to the flux operates the armature 6
  • may also be of the type disclosed, as another example, in Patent No. 2,289,830 issued to W. B. Ellwood on July 14, 1942.
  • This switch element disclosed in Fig. 3, comprises a glass vessel 62 into the upper and lower ends of which are sealed the terminals 64 and 63 to the inner ends of which are welded the reeds 66 and 65, respectively, of magnetic material.
  • the overlapping ends of these reeds are normally out of engagement and may be provided with contact surfaces of any suitable metal having good electrical conductivity.
  • the vessel is evacuated before it is sealed and is refilled with a gas such as helium or any other suitable inert gas.
  • switch elements of this type are used in the relay, they are so positioned in the aligned holes in the pole-pieces thereof that the gaps between the ends of the reeds 65 and 66 are centrally located with respect to the upper and lower pole-pieces as disclosed in Fig. 3.
  • a relay structure which may take other forms besides the one illustrated and described, has been devised which permits simple, compact and inexpensive mechanical construction since only a small bar magnet and a small yoke, or keeper, is required to direct operating flux to either one of two working gaps; that a relay structure is provided which produces a pull on the armature which is essentially proportional to the square of the operating current, thus permitting easy adjustment when close operate and non-operate requirements must be met, and whereby a small change in current produces a large change in pull compared with the usual polarized relay having a pull directly proportional to the operating current; that a relay structure is provided which is not subject to false operation even on excess current, and that the provision of a permanent magnet with a yoke, or keeper, produces an ideal magnetic condition in which the permanent magnet has no tendency to demagnetize and thus destroy the efficiency of the relay, and in which the armatures of the relay are normally not subject to the force of the magnet.
  • a core parallelly disposed polar extensions therefor, a yoke of magnetic material secured to the free end of one 0
  • a core parallelly disposed polar extensions therefor, a yoke of magnetic material secured to the free end of one of said extensions having the ends of its depending arms extended parallel to the end of the other of said extensions, a permanent magnet interconnecting the legs of said yoke, switching elements disposed in aligned openings in the extensions of said yoke legs and in said other polar extension, each of said elements comprising a sealed vessel having therein a movable armature and contacts engageable by the movement of said armature, and a coil on said core energizable to cause the selective operation of said switch elements dependent upon the polarity of the current applied to said coil,
  • a core parallelly disposed polar extensions therefor, a yoke of magnetic material secured to the free end of one of said extensions having the ends of its depending arms extending parallel to the end of the other of said extensions, a permanent magnet interconnecting the legs of said yoke, switching elements disposed in aligned openings in the extensions of said yoke legs and in ,said other polar extension, each of said elements comprising a sealed vessel having therein a pool of mercury, an armature floated on the pool of mercury and contacts engageable through said mercury by the displacement of said mercury upon the movement of said armature and a coil on said core energizable to cause the selective operation of said switch elements dependent upon the polarity of the current applied to said coil.
  • a core parallelly disposed polar extensions therefor, a yoke of magnetic material secured to the free end of one of said extensions having the ends of its depending legs extending parallel to the end of the other of said extensions, a permanent magnet interconnecting the legs of said yoke, switching elements disposed in aligned openings in the extensions of said yoke legs and in said other polar extension, each of said elements comprising a sealed vessel having two terminals sealed through the ends of said vessel and reeds of magnetic material secured Within said vessel to the inner ends of said terminals with their free ends overlapping and normally out of engagement and a coil on said core energizable to cause the selective attraction of the reeds of said switch elements dependent upon the polarity of the current applied to said coil.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
US527534A 1940-07-11 1944-03-22 Polarized relay Expired - Lifetime US2378986A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL65085D NL65085C (en(2012)) 1940-07-11
BE475679D BE475679A (en(2012)) 1940-07-11
US527534A US2378986A (en) 1940-07-11 1944-03-22 Polarized relay
CH266497D CH266497A (fr) 1940-07-11 1947-07-29 Relais polarisé.
FR950512D FR950512A (fr) 1940-07-11 1947-07-30 Relais polarisé
GB21766/47A GB625531A (en) 1940-07-11 1947-08-07 Improvements in or relating to electromagnetic relays

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US344898A US2355909A (en) 1940-07-11 1940-07-11 Polarized relay
US527534A US2378986A (en) 1940-07-11 1944-03-22 Polarized relay

Publications (1)

Publication Number Publication Date
US2378986A true US2378986A (en) 1945-06-26

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ID=26994154

Family Applications (1)

Application Number Title Priority Date Filing Date
US527534A Expired - Lifetime US2378986A (en) 1940-07-11 1944-03-22 Polarized relay

Country Status (6)

Country Link
US (1) US2378986A (en(2012))
BE (1) BE475679A (en(2012))
CH (1) CH266497A (en(2012))
FR (1) FR950512A (en(2012))
GB (1) GB625531A (en(2012))
NL (1) NL65085C (en(2012))

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606981A (en) * 1946-07-05 1952-08-12 F K G Fritz Kesselring Gerateb Magnetic switching device of the cartridge or plug-type
US2633488A (en) * 1948-04-16 1953-03-31 Honeywell Regulator Co Electromagnetic relay
DE1044975B (de) * 1955-02-18 1958-11-27 Western Electric Co Quecksilberschalter fuer elektrische Leitungen
US2877315A (en) * 1956-06-19 1959-03-10 Bell Telephone Labor Inc Electromagnetic relay
US2877316A (en) * 1956-06-19 1959-03-10 Bell Telephone Labor Inc Electromagnetic relay
US2889424A (en) * 1957-12-31 1959-06-02 Bell Telephone Labor Inc Relay
US2892051A (en) * 1956-02-20 1959-06-23 Gems Company Flow indicator
US2902558A (en) * 1955-02-17 1959-09-01 Bell Telephone Labor Inc Laminated core dry reed relay
US2919322A (en) * 1958-10-01 1959-12-29 Link Aviation Inc Low noise contact modulator
US2922855A (en) * 1955-01-31 1960-01-26 Giannini Controls Corp Magnetic switch device
US2973414A (en) * 1956-07-06 1961-02-28 Toledo Scale Corp Cutoff device for weighing scales
US2978556A (en) * 1958-05-06 1961-04-04 Siemens And Halske Ag Berlin A Sealed-in contact relay
US2985733A (en) * 1959-02-19 1961-05-23 Bell Telephone Labor Inc High leakage resistance electromagnetic relay
US2992306A (en) * 1959-07-01 1961-07-11 Bell Telephone Labor Inc Magnetically controlled switching device
US3002067A (en) * 1959-07-01 1961-09-26 Bell Telephone Labor Inc Magnetically biased switch
US3014102A (en) * 1957-04-09 1961-12-19 Int Standard Electric Corp Electro magnetic switch apparatus
US3015707A (en) * 1957-11-19 1962-01-02 Bell Telephone Labor Inc Relay
US3061696A (en) * 1958-10-29 1962-10-30 Bell Telephone Labor Inc Switching device
US3190984A (en) * 1963-02-21 1965-06-22 Bell Telephone Labor Inc Sealed contact transfer switch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE532641A (en(2012)) * 1953-10-19
US2850595A (en) * 1954-02-18 1958-09-02 Gen Telephone Lab Inc Polarized relay
USRE24998E (en) * 1955-07-08 1961-06-06 carpenter

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606981A (en) * 1946-07-05 1952-08-12 F K G Fritz Kesselring Gerateb Magnetic switching device of the cartridge or plug-type
US2633488A (en) * 1948-04-16 1953-03-31 Honeywell Regulator Co Electromagnetic relay
US2922855A (en) * 1955-01-31 1960-01-26 Giannini Controls Corp Magnetic switch device
US2902558A (en) * 1955-02-17 1959-09-01 Bell Telephone Labor Inc Laminated core dry reed relay
DE1044975B (de) * 1955-02-18 1958-11-27 Western Electric Co Quecksilberschalter fuer elektrische Leitungen
US2892051A (en) * 1956-02-20 1959-06-23 Gems Company Flow indicator
US2877315A (en) * 1956-06-19 1959-03-10 Bell Telephone Labor Inc Electromagnetic relay
US2877316A (en) * 1956-06-19 1959-03-10 Bell Telephone Labor Inc Electromagnetic relay
US2973414A (en) * 1956-07-06 1961-02-28 Toledo Scale Corp Cutoff device for weighing scales
US3014102A (en) * 1957-04-09 1961-12-19 Int Standard Electric Corp Electro magnetic switch apparatus
US3015707A (en) * 1957-11-19 1962-01-02 Bell Telephone Labor Inc Relay
US2889424A (en) * 1957-12-31 1959-06-02 Bell Telephone Labor Inc Relay
US2978556A (en) * 1958-05-06 1961-04-04 Siemens And Halske Ag Berlin A Sealed-in contact relay
US2919322A (en) * 1958-10-01 1959-12-29 Link Aviation Inc Low noise contact modulator
US3061696A (en) * 1958-10-29 1962-10-30 Bell Telephone Labor Inc Switching device
US2985733A (en) * 1959-02-19 1961-05-23 Bell Telephone Labor Inc High leakage resistance electromagnetic relay
US2992306A (en) * 1959-07-01 1961-07-11 Bell Telephone Labor Inc Magnetically controlled switching device
US2995637A (en) * 1959-07-01 1961-08-08 Bell Telephone Labor Inc Electrical switching devices
US3002067A (en) * 1959-07-01 1961-09-26 Bell Telephone Labor Inc Magnetically biased switch
US3002066A (en) * 1959-07-01 1961-09-26 Bell Telephone Labor Inc Magnetically controlled switching device
US3190984A (en) * 1963-02-21 1965-06-22 Bell Telephone Labor Inc Sealed contact transfer switch

Also Published As

Publication number Publication date
NL65085C (en(2012))
BE475679A (en(2012))
FR950512A (fr) 1949-09-29
GB625531A (en) 1949-06-29
CH266497A (fr) 1950-01-31

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