US2301894A - Relay - Google Patents

Relay Download PDF

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Publication number
US2301894A
US2301894A US267500A US26750039A US2301894A US 2301894 A US2301894 A US 2301894A US 267500 A US267500 A US 267500A US 26750039 A US26750039 A US 26750039A US 2301894 A US2301894 A US 2301894A
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US
United States
Prior art keywords
arm
spring
armature
abutment
springs
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
US267500A
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English (en)
Inventor
Linderoth Martin Herman
Lundkvist Karl Axel
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of US2301894A publication Critical patent/US2301894A/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
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures

Definitions

  • the present invention relates to relays of the kind which operate step by step.
  • Fig. l is a side elevation of a relay according to the invention.
  • Fig. 2 is a side elevation of a modication, the electromagnet and the armature not being shown.
  • Fig. 3 is a side elevation of a further modification.
  • Fig. 4 a relay according to the invention.
  • Figs. 5 to 7 show in side elevation a further modiiication, which is similar to the arrangement shown in Fig. l, the armature and other eiements being shown in three different positions.
  • Fig. 8 shows in side elevation another embodiment of the invention which operates on the same principle as the relay shown in Figs. 5 to '7.
  • Fig. 9 is a side elevation oi a further embodiment.
  • Fig. 1l is a plan View of a contact spring used in the same embodiment.
  • FIG. l provided with two windings A and B.
  • an arm 2 Pivotally mounted on a plate l serving as a support for the group ci springs is an arm 2, which is provided with an extension 3 and a shoulder
  • the arm 2 is actuated by a spring fl which presses on the extension 3, striving to move the arm 2 to a vertical position.
  • the arm 2 is held in the position shown by an abutment il provided on the contact spring 5 oi the group oi contact springs, said abutment Q pressing against the extension 3.
  • a slit is provided in the spring 5 to render possible movement oi the arm
  • the abutment 9 provided on the spring 5 cannot prevent movement of the arm 2, since after the spring 5 has been lifted said abutment no longer engages the extension
  • the armature returns irom its fully attracted to its intermediate position the spring l will be held in its lifted position by the abutment 8 resting on the shoulder ii oi the arm 2 while the spring 5 will follow the return movement oi the armature, so that when the armature has returned to its intermediate position the contact between the two springs ii and 'i will be interrupted.
  • the armature returns to its position of rest the abutment d on the spring 5 will press against 2 causing said arm to be shifted to the position shown, the Contact spring 'l being at the same time released and permitted to return to its position or" rest.
  • the relay illustrated is in the embodiment shown 1n Figure 2 there is pivotally mounted on the plate which is provided with a pin cess iii into which projects a spring tends to turn the arm i3 counter-clockwise. Movement is prevented by an l an arm I3 i5 and w'th a reil which Said abutment i8 provided on the contact spring 1 as long as said spi. iff occupies its position of rest.
  • the contact spring 5 is moved upwards so as to make contact with the Contact spring 1.
  • both contact springs 5 and 1 will be lifted, so that the abutment I8 will not any longer lock the pin I5.
  • the arm I3 can therefore turn counter-clockwise under the action of the spring I7 until the end of the pin I5 comes under the shoulder I2 on the abutment I8.
  • the spring 1 will come to bear on the pin I5 through the intermediary of the abutment I 8, and when the armature has returned to its intermediate position the Contact between the springs 1 and 5 will be interrupted.
  • the spring 5 will also return to its position of rest, then actuating by means of an abutment I9 provided thereon the arm I3 so that said arm is restored to the position shown.
  • an arm 28 provided with shoulders or abutting surfaces 2I and 22 is pivotally mounted on a spring 23 appertaining to the group of Contact springs.
  • the abutting surfaces 2i and 22 are adapted to cooperate with an abutment 24 provided on the U contact spring 5.
  • the abutment 24 bears on the abutting surface ZI when the armature of the relay occupies its position of rest.
  • the arm 25 will move the ccntact spring 5 upwards, causing the latter to make contact with the contact spring 1.
  • the arm 29 is provided with a projecting pin 25 adapte-d to cooperate with two springs and 21, the spring 26 serving to hold the arm in the position shown when the armature of the relay occupies its position of rest and its intermediate position.
  • the pin 25 will strike against the spring 21, causing the arm 2G to turn counterclockwise, so that the abutment 24 will come to rest against the abutting surface 22.
  • the springs 5 and 1 thus do not follow the armature when i moving from its intermediate to its fully attracted position.
  • Figures 5 to '1 show a further embodiment which is similar to the arrangement shown in Figure l.
  • the arm 35 which is provided with a flange 34, is held in a vertical position under the action of a spring 36, however, when the armature occupies its position of rest ( Figure 5), the spring 1 then resting on the arm 35 through the intermediary of the abutment 31, so that the contact between the springs 5 and 1 is then interrupted.
  • a resilient pin 33 provided on the armature 38 engages the flange 34 of the arm 35, so that the arm is shifted to the position shown in Figure 6 in which position said arm is locked by the abutment 37 Secured on the spring 1.
  • Figure 8 shows another embodiment of the invention, which operates on the same principle as the relay shown in Figure 5.
  • the arm 4U which is pivotally mounted on the pin 4I, is provided with a recess or opening 42 in which an abutment 43 on the spring 1 is received.
  • the arm 4D is held in the position shown by means of a spring wound on the pin 4i, one end 44 of said spring engaging the supporting plate 45 and the other end 4B of said spring engaging an arm 41, which is bent through a right angle and projects through an opening 49 in the arm 43, said bent arm 41 being pivoted on a pin 48 secured in the arm 40.
  • the arm 40 is actuated by a spring 5G of the group of springs, said spring being provided with an opening 5I through which the arm 4I! projects.
  • the arm 47 cannot prevent the spring 5D from returning to its position of rest, since the same, through the pressure from the right hand edge 52 of the opening 5I in the spring 50, is turned about the pin 4S so that the arm 41 is inserted so far into the opening 49 of the arm 43 against the action of the spring 46 that the bevelled edge 52 of the recess 5I can slide over the outer end of the arm 41. rlhe arm 4i! then remains in its position of rest.
  • Figures 9 to 11 show a further embodiment in which one of the springs 5 is tensioned so as to have a tendency to move in the direction towards the spring 1.
  • the spring 5 When the armature occupies its position of rest, the spring 5 is. depressed by an abutment GI mounted on a spring 52 and provided with a pin which projects through an opening in the spring 5.
  • the tenere fi?” projects through an opening G5 ring 5, sai-d opening being provided with Figure
  • the tongue 'Lili will be positioned in the wider portion of the opening Sii.
  • the armature is attracted to its middle position, the abutment 6I is lifted, releasing the spring 5 sc that the latter contacts with the spring L
  • the arm 53 pivotally mounted on the spring 62 is then also carried upwards, yet without the upper portion of the arm engaging with the abutment G8.
  • Figure 4 is a diagram of connections showing the two windings A and B of a relay connected to a subscriber in an automatic telephone system.
  • the winding A Upon receipt of an incoming call over the lines a. and b the winding A will be energized over the contacts 32 and 33, and the contact between the springs 5 and 'E will then close.
  • the relay C then starts the call finders over the contact 30.
  • the ohmic resistance of the relay C is of sufficient magnitude to prevent the winding B from being energized.
  • the winding B is energized, the armature being moved through the second step to its fully attracted position, interrupting the contacts 3l, 32 and 33.
  • the spring group of the relay comprises also contact springs for the contacts 3
  • contact springs In a step by step operated relay, contact springs, an arm shiftable to two positions and adapted to cooperate with the Contact springs, means striving to shift said arm to a position in which at least one of the springs can rest thereagainst, an armature movable in two steps, means arranged on one of the springs adapted to prevent the arm from taking said position until the armature is shifted from its first to the second step, and means adapted to shift said arm from said position in which said springs can rest thereagainst upon return of the armature to its position of rest from its first step.
  • a step by step operated relay contact springs, a plate serving as a support for the contact springs, an arm shiftable to two positions and adapted to cooperate with said Contact springs, said arm being pivotally mounted on said plate, a spring arranged in the group of the Contact springs and striving to shift said arm to a position in which at least one of the springs can rest thereagainst, an armature movable in two steps, means arranged on one of the springs adapted to prevent the arm from taking said position until the armature is shifted from its first to the second step, and means adapted to shift said arm from said position in which said springs can rest thereagainst upon return of the armature to its position of rest from its rst step.
  • an arm shiftable to two positions, an armature, contact springs, means striving to shift said arm to a position in which at least one of said springs can rest thereagainst, means on the armature adapted to shift said arm from said position on the attraction of the armature to an intermediate position, said contact spring thereby being released and moved to a new position, and means on said springs adapted to lock said arm in the shifted position.
  • an arm shiftable to two positions, contact springs, an abutment arranged on one of the contact springs, means striving to shift said arm to a position in which said abutment can rest thereagainst, an armature, a resilient member mounted on the armature and adapted to shift said arm from said position on the attraction of the armature to an intermediate position, said abutment with said contact spring thereby being released and moved to a new position, and said abutment being adapted to lock said arm in the shifted position.
  • an arm shiftable to two positions, contact springs, an abutment arranged on one of the contact springs, means striving to shift said arm to a position in which said abutment can rest thereagainst, an armature, means adapted to shift said arm from said position on the attraction of the armature to an intermediate position, said abutment with said contact spring thereby being released and moved to a new position, said abutment being adapted to lock said arm in the shifted position, a blade spring arranged in the group of the contact springs and being actuated by said armature and said shifting of said arm being effected by said blade spring.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)
  • Interface Circuits In Exchanges (AREA)
US267500A 1937-11-27 1939-04-12 Relay Expired - Lifetime US2301894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE511563X 1937-11-27

Publications (1)

Publication Number Publication Date
US2301894A true US2301894A (en) 1942-11-10

Family

ID=20310977

Family Applications (1)

Application Number Title Priority Date Filing Date
US267500A Expired - Lifetime US2301894A (en) 1937-11-27 1939-04-12 Relay

Country Status (5)

Country Link
US (1) US2301894A (enrdf_load_stackoverflow)
BE (1) BE431313A (enrdf_load_stackoverflow)
DE (1) DE715383C (enrdf_load_stackoverflow)
FR (1) FR846645A (enrdf_load_stackoverflow)
GB (1) GB511563A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534797A (en) * 1949-10-14 1950-12-19 James A Rugh Switch holding and release mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534797A (en) * 1949-10-14 1950-12-19 James A Rugh Switch holding and release mechanism

Also Published As

Publication number Publication date
FR846645A (fr) 1939-09-21
GB511563A (en) 1939-08-21
DE715383C (de) 1941-12-20
BE431313A (enrdf_load_stackoverflow)

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