GB619660A - Improvements in or relating to electro-magnetic interrupters - Google Patents

Improvements in or relating to electro-magnetic interrupters

Info

Publication number
GB619660A
GB619660A GB37409/46A GB3740946A GB619660A GB 619660 A GB619660 A GB 619660A GB 37409/46 A GB37409/46 A GB 37409/46A GB 3740946 A GB3740946 A GB 3740946A GB 619660 A GB619660 A GB 619660A
Authority
GB
United Kingdom
Prior art keywords
contact
springs
snaps
armature
dead
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
Application number
GB37409/46A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB619660A publication Critical patent/GB619660A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Abstract

619,660. Electromagnetic interrupters. STANDARD TELEPHONES & CABLES, Ltd. Dec. 19, 1946, No. 37409. Convention date, May 31, 1944. [Class 38(v)] An electromagnetic interrupter with a lowfrequency has a contact member 1 pivoted on a fixed member 2 and controlled by a dead-centre spring 3. The contact 1 lies between two contact springs 4, 5 that are connected by an insulating piece 6. With the parts in the position shown, a circuit is completed through the contacts 1, 4 to the electromagnet 9 which attracts its armature 8 causing a stud 13 to press the springs 4, 5 to the left carrying the arm 1 over its dead-centre position so that it snaps from the contact 4 to the contact 5. This short-circuits the coil and introduces a resistance 14 in its place. The springs 4, 5 then move back under their own bias carrying the arm 1 back over the deadcentre position so that it snaps from 4 to 5 and the cycle recommences. A copper ring 10 may delay the rate of change of flux. The armature may also operate other contact springs.
GB37409/46A 1944-05-31 1946-12-19 Improvements in or relating to electro-magnetic interrupters Expired GB619660A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR619660X 1944-05-31

Publications (1)

Publication Number Publication Date
GB619660A true GB619660A (en) 1949-03-11

Family

ID=8983838

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37409/46A Expired GB619660A (en) 1944-05-31 1946-12-19 Improvements in or relating to electro-magnetic interrupters

Country Status (1)

Country Link
GB (1) GB619660A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349353A (en) * 1965-08-16 1967-10-24 Automatic Elect Lab Snap action type relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349353A (en) * 1965-08-16 1967-10-24 Automatic Elect Lab Snap action type relay

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