US1749331A - Polar neutral relay - Google Patents

Polar neutral relay Download PDF

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Publication number
US1749331A
US1749331A US305408A US30540828A US1749331A US 1749331 A US1749331 A US 1749331A US 305408 A US305408 A US 305408A US 30540828 A US30540828 A US 30540828A US 1749331 A US1749331 A US 1749331A
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US
United States
Prior art keywords
polar
spaced
armature
magnetic
arm
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
US305408A
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English (en)
Inventor
Oscar S Field
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.)
SPX Technologies Inc
Original Assignee
General Railway Signal Co
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 General Railway Signal Co filed Critical General Railway Signal Co
Priority to US305408A priority Critical patent/US1749331A/en
Priority to GB23415/29A priority patent/GB318916A/en
Priority to FR679936D priority patent/FR679936A/fr
Priority to DEG77232D priority patent/DE518416C/de
Application granted granted Critical
Publication of US1749331A publication Critical patent/US1749331A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature

Definitions

  • FIG. 1 is a top plan view, with parts shown in section, ofa relay constructed in accord ance with this invention.
  • Fig. 2 is a side elevational view, with parts shownin section of the relay of Fig. 1.
  • Fig.3 isa sectional view on line 3--3 of Fig. 1, viewed in the direction of the arrows.
  • Fig. 4 is a sectional View, with parts omitted forclearness, on line 14 of Fig. 2, viewed in the direction of the arrows.
  • Fig-5 is a sectional view, with partsomitted for clearness, on line 5-5 of Fig. 11, viewed in the direction of the arrows.
  • Fig. .6 is a sectional view, with parts omitted for clearness, on the line 6-4) of Fig. 1 viewed in the direction of the arrows.
  • Fig. 7 is a fragmentary view showing a detail of the neutral armature mounting.
  • the relay comprises a top plate 1 of insulating material to which is connected, in water tight relationship, a casing 2, preferably of glass or other transparent material, the two members 1 and 2 being connected together by bolts 3 and nuts 4.
  • a neutral armature 15 mounted on trunnions 16 which turn in bearingslT in a support bracket 18 which is adjustably supported from the plate SP by means of threaded studs 19 and upper and lower nuts 20 and- 21, whereby the back gap betweenthe neutral armature and its pole shoes can be readily adjusted.
  • a support bracket SB of magnetic material is connected by screws 22 to the support
  • On the cores 6 and 7 are coils plate and is right angular'in form, with a horizontal arm 23 and a vertical arm 24.
  • the horizontal arm 23 has two upstanding hollow bosses 25 which are received in openings in the support plate as shownin Fig. 1.
  • the vertical arm 24 has connected to its lower end by screws 26, a yoke 27 of non-magnetic material, in which yoke is adjustably mounted a spindle'28.
  • a polar armature PA which is right angular in shape to correspond with thatof the support: bracket SB.
  • This polar armature PA hasa vertical leg 31 mounted on spindle 28, asshown in Fig. 4, by a nut 32, and is positioned to have a horizontal arm 33 between the poleshoes 8 and 9 of the electro-magnets.
  • the above described magnetic structure furnishes .a good magnetic. path for both the.
  • the electro-magnetic flux produced by energization of the windings 11 passes downwardly through one of the cores, such as 7, across between the pole shoes 8 and 9 and the horizontal arm 33 of the polar armature PA, then up through the other core, such as 6, and across the back strap 14.
  • one of the cores such as 7, across between the pole shoes 8 and 9 and the horizontal arm 33 of the polar armature PA, then up through the other core, such as 6, and across the back strap 14.
  • the direction of flow of flux is reversed, on reverse energization of the windings.
  • the permanent magnets 29 are positioned so as to each have the same polarity at the upper end, as for example north, as indicated by the reference letters N in Fig. 4.
  • the flow of flux from each permanent magnet passes upwardly through the permanent magnet, through the back strap 14, down through one or the other of the electro-magnet cores, 6 or 7, depending on the particular direction of energization of the windings 11, through an electromagnet pole shoe, to the horizontal arm 33 of the polar armature PA, and thence back to the lower end of the permanent magnet, through the air gaps between the horizontal and vertical arms 33 and 31 of polar armature PA, and the corres onding arms 23 and 24 of support bracket SF.
  • a plurality of contact fingers 34 is connected to the neutral armature 15, each finger comprising two main parts, 35 and 36, articulated to each other and biased apart by a spring 37.
  • the member 35 carries a movable front contact 38 of silver mesh or the like to cooperate with a fixed front contact 39 of carbon or the like, while the member 36 carries a movable back contact 40 of. coin silver, or the like, to cooperate with a fixed back contact 41 of coin silver, for example.
  • Each bar 42 Fixed to move with the vertical arm 31 of the polar armature, and the connected spindle 28, are carrier bars 42 extending in opposite directions to the two ends of the relay.
  • Each bar 42 carries an insulating block 43, to each of which are connected two contact fingers 44, each having mounted at its end a movable front contact 45 of silver mesh, and a movable back contact 46 of carbon.
  • These contacts 45 and 46 cooperate respectively with a fixed front contact 47, of a carbon block, and a fixed back contact 48 of silver mesh.
  • the magnetic reluctance and flux density of the polar magnetic path is reduced to a minimum, which results in a much more economical and certain operation of the relay generally and more particularly of the polar contacts with which difficulties are more generally encountered than with the neutral contacts.
  • brackets 49 For supporting the relay from a wall or the like, two brackets 49 are provided, as shown in Figs. 1 and 2.
  • a pair of spaced electromagnets including spaced pole shoes, a pair of spaced permanent magnets adjacent said electromagnets, and a back yoke magnetically connecting together one end of each of said magnets.
  • a pair of spaced electromagnets including spaced pole shoes, a pair of spaced permanent magnets adjacent said electromagnets, a back yoke magnetically connecting together one end of each of said magnets, an angular support bracket of magnetic material having a horizontal arm receiving the other ends of said permanent magnets and a depending plate like arm presenting abroad face of relatively large area, and a pivoted polar armature magnetically cooperating with said pole shoes and said angular support bracket.
  • a pair of spaced electromagnets including spaced pole shoes, a pair of spaced permanent magnets adjacent said electromagnets, a back yoke magnetically connecting together one end of each of said magnets, an angular support bracket of magnetic material having a horizontal arm receiving the other ends of said permanent magnets and a depending plate like arm presenting a broad face of relatively large area, and a pivoted polar armature of angular form, having a horizontal arm positioned to swing sidewise between said pole shoes and a depending plate like arm parallel with, and spaced by but a narrow gap from, said broad face of said depending plate like arm, whereby to afiord a much better magnetic path between the permanent magnets and the electromagnets by way of said polar armature than by any path excluding said polar armature.
  • a pair of spaced electromagnets including spaced pole shoes, a pair of spaced permanent magnets adjacent said electromagnets, a back yoke n'iagnetically connecting together one end of each of said magnets, an angular support bracket of magnetic material having a horizontal arm receiving the other ends of said permanent magnet and a depending plate like arm presenting. a broad face of relatively large area, a pivoted polar armature magnetically cooperating with said pole shoes and said support bracket, a pivot yoke fixed to the lower end of said depending arm of said support bracket, a spindle adjustably mounted in said pivot yoke, and means mounting said polar armature on said spindle.
  • a pair of spaced electromagnets including spaced pole shoes, a pair of spaced permanent magnets adjacent said electromagnets, a back yoke magnetically connecting together one end of each of said magnets, an angular support bracket of magnetic material having a horizontal arm receiving the other ends of said permanent magnets and a depending plate like arm presenting a broad face of relatively large area, a pivoted polar armature of angular form having a horizontal arm positioned to swing sidewise between said pole shoes and a depending plate like arm parallel with, and spaced by but a narrow gap from, the broad face of said depending arm of said bracket, whereby to afford a much better magnetic path between the permanent and the electromagnets by way of said polar armature than by any path excluding said polar armature, a pivot yoke lined to the low er end of said depending arm of said bracket, a spindle adjustably mounted in said yoke, and means mounting said polar armature on said spindle
  • a support plate in combination, two elongated spaced electromagnets mounted in said plate in a common plane, two spaced elongated permanent magnets mounted in said plate in a plane at substan tially right angles to said common plane, a back strap magnetically connecting together one end of each magnet, and cooperating polar and neutral armatures.
  • a support plate in combination, two elongated spaced electromagnets mounted in said plate in a common plane, two spaced elongated permanent magnets mounted in said plate in a plane at substantially right angles to said common plane, a back strap .magnetically connecting together one end. of each magnet, spaced pole pieces on said electromagnets, a magnetic support bracket having a horizontal arm receiveing the other ends of said permanent magnets and a depending vertical arm, and a pivoted polar ar mature cooperating with said pole shoes and said magnetic support bracket.
  • a support plate in combination, two elongated spaced electromagnets mounted in said plate in a common plane, two spaced elongated permanent magnets mounted in said plate in a plane at substantially right angles to said common plane, a hack strap magnetically connecting together one end of each magnet, spaced-pole pieces on said electromagnets, a magnetic support bracket having a horizontal arm receiving the other ends of said permanent magnets and a depending vertical arm, and a pivoted polar armature having a horizontal arm, positioned to swing between said pole pieces and a vertical arm, said arms of said polar armature paralleling the corresponding arms of said magnetic bracket and being spaced therefrom by only a relatively narrow air gap.
  • a support plate in combination, two elongated spaced electromagnets mounted in said plate in a common plane, two
  • spaced elongated rmanent magnets mounted in said plate 1n a plane at substantiall right angles to said common plane, a bac to the lower end of saiddepen strap magnetically connecting together one end of each magnet, spaced pole-pieces on said electromagnets, a magnetic support bracket having a horizontal arm receiving theother ends of said permanent magnets and a depending vertical arm, and a ivoted polar armature having a horizont arm, positioned to swing between said pole pieces, and a vertical arm, said arms of said polar armature paralleling the corresponding arms of said ma netic bracket and being spaced therefrom y only a relatively narrow air gap, said vertical arms being of broad plate like formation, withtheir faces opposing, to thereby furnish alow reluctance ath therebetween for permanent magnet ux.
  • a support plate in combination, two elongated spaced electroma ets mounted in said plate in a common p ane, two spaced elongated permanent magnets mounted in said late in a plane at substantially right anges to said common plane, a back strap magnetically connectin together one end of each magnet, space pole pieces on said electromagnets, a magnetic support bracket hav' a horizontal arm recelving the other en of said permanent magnets and a depending vertical arm, a pivoted polar armature having a horizontal arm, positioned to swing between said pole pieces, and a vertical arm, said arms of said polar armature (paralleling the correspondmg armsof sai magnetic bracket and being spaced therefrom b only a relatively narrow air gap, a spin e mounted on the vertical arm of said polar armature, a yoke, means adjustably mounting said spindle in said yoke, and means connectininsaidyoke g arm of the support bracket.
  • a support plate in combination, a support plate, two elon ated spaced electromagnets mounted in said plate ina common plane, two spaced elongated permanent magnets mounted in said plate --in a plane at substantially right angles to said common plane, a back strap magnetically eonneetin t together one end of each magnet, spae pole pieces on said electro-magiets, a magnetic support bracket having a horizontal arm receiving the other ends of said ermanent magnets and a depending vertica arm, a'pivoted polar armature having a horizontal arm, posi tinned to swing between said pole pieces, and a vertical arm, said arms of said polar armature paralleling the corresponding arms of said magnetic bracket and being spaced therefrom by only a relatively narrow air ap, said vertical arms being of broad plate ike formation, with their faces opposi to thereby furnish a low reluctance path t erebetween for permanent magnet flux, a spindle mounted in the vertical arm of said
  • a relay in combination, spaced electromagnets having spaced pole shoes adjacent spaced permanent magnets, a back yoke connecting together one end of each magnet, a magnetic bracket connecting together the other ends of said permanent magnets, a pivoted neutral armature positioned to contact with the faces of said pole shoes on energization of said electromagnets, and a pivoted neutral armature positioned to swing a: sidewise between the: inner sides of said pole shoes and between'said magnetic bracket and said neutral armature.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
US305408A 1928-09-12 1928-09-12 Polar neutral relay Expired - Lifetime US1749331A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US305408A US1749331A (en) 1928-09-12 1928-09-12 Polar neutral relay
GB23415/29A GB318916A (en) 1928-09-12 1929-07-30 Improvements relating to electrical relays
FR679936D FR679936A (fr) 1928-09-12 1929-08-06 Perfectionnements aux relais électriques
DEG77232D DE518416C (de) 1928-09-12 1929-08-16 Elektromagnetisches Relais

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US305408A US1749331A (en) 1928-09-12 1928-09-12 Polar neutral relay

Publications (1)

Publication Number Publication Date
US1749331A true US1749331A (en) 1930-03-04

Family

ID=23180659

Family Applications (1)

Application Number Title Priority Date Filing Date
US305408A Expired - Lifetime US1749331A (en) 1928-09-12 1928-09-12 Polar neutral relay

Country Status (4)

Country Link
US (1) US1749331A (fr)
DE (1) DE518416C (fr)
FR (1) FR679936A (fr)
GB (1) GB318916A (fr)

Also Published As

Publication number Publication date
FR679936A (fr) 1930-04-23
GB318916A (en) 1930-05-01
DE518416C (de) 1931-02-18

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