GB465133A - Improvements in or relating to guards for the contacts of electromagnetic relays such as are used in telephone systems - Google Patents

Improvements in or relating to guards for the contacts of electromagnetic relays such as are used in telephone systems

Info

Publication number
GB465133A
GB465133A GB3022635A GB3022635A GB465133A GB 465133 A GB465133 A GB 465133A GB 3022635 A GB3022635 A GB 3022635A GB 3022635 A GB3022635 A GB 3022635A GB 465133 A GB465133 A GB 465133A
Authority
GB
United Kingdom
Prior art keywords
guard
screw
edge
springs
legs
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
GB3022635A
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
Priority to GB3022635A priority Critical patent/GB465133A/en
Publication of GB465133A publication Critical patent/GB465133A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Telephone Set Structure (AREA)

Abstract

465,133. Light current relays. STANDARD TELEPHONES & CABLES, Ltd., and POWELL, F. G. S. Nov. 1, 1935, No. 30226. [Class 38 (v)] A guard for preventing damage to the contact springs of telephone-type relays is formed as shown in Figs. 1 and 2 of a clip-on member of springy metal which comprises a flat portion 10 and downturned arms 11. As this is placed on the relay, Fig. 3, the arms 11 are sprung apart as by means of a special tool so that inwardly turned bifurcated lugs 15 engage the sides of the yoke 1 and the edge of the coil cheek 16, the portion 10 being pushed forward over the top of the porcelain member 6 and screws 7 and 8 so that a circular hole 14 snaps over the head of the screw 7 and the elongated hole 13 embraces the top of the screw 8 and the upward projection of the member 6. In this position the forward edges of the legs 11 project beyond the ends of the contact springs 5 so that the edge of the cover if pushed towards the springs will encounter the legs 11 of the guard and be prevented from damaging the springs. The hole 14 is slightly larger than the head of the screw 7, Fig. 4, so that if the edge of the cover engages the guard the latter will have a slight free movement to absorb the shock of the impact.
GB3022635A 1935-11-01 1935-11-01 Improvements in or relating to guards for the contacts of electromagnetic relays such as are used in telephone systems Expired GB465133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3022635A GB465133A (en) 1935-11-01 1935-11-01 Improvements in or relating to guards for the contacts of electromagnetic relays such as are used in telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3022635A GB465133A (en) 1935-11-01 1935-11-01 Improvements in or relating to guards for the contacts of electromagnetic relays such as are used in telephone systems

Publications (1)

Publication Number Publication Date
GB465133A true GB465133A (en) 1937-05-03

Family

ID=10304278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3022635A Expired GB465133A (en) 1935-11-01 1935-11-01 Improvements in or relating to guards for the contacts of electromagnetic relays such as are used in telephone systems

Country Status (1)

Country Link
GB (1) GB465133A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426253A (en) * 1942-08-18 1947-08-26 Int Standard Electric Corp Electromagnetic relay
DE948887C (en) * 1952-05-30 1956-09-06 Ericsson Telefon Ab L M Electromagnetic relay

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426253A (en) * 1942-08-18 1947-08-26 Int Standard Electric Corp Electromagnetic relay
DE948887C (en) * 1952-05-30 1956-09-06 Ericsson Telefon Ab L M Electromagnetic relay

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