GB810588A - Improvements in telephone subscriber's sets - Google Patents
Improvements in telephone subscriber's setsInfo
- Publication number
- GB810588A GB810588A GB744856A GB744856A GB810588A GB 810588 A GB810588 A GB 810588A GB 744856 A GB744856 A GB 744856A GB 744856 A GB744856 A GB 744856A GB 810588 A GB810588 A GB 810588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- polepieces
- electromagnet
- sets
- limb
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/04—Supports for telephone transmitters or receivers
- H04M1/06—Hooks; Cradles
- H04M1/08—Hooks; Cradles associated with switches operated by the weight of the receiver or hand-set
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Telephone Set Structure (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
810,588. Electric bells. STANDARD TELEPHONES & CABLES Ltd. (Standard Electrica S.A.). March 9, 1956, No. 7448/56. Class 13. [Also in Group XXXIX] A bell comprises an electromagnet with polepieces 8 and 9 clamped to core 59 which has a return limb 77. Brass spacers 76 and air gaps separate the limb 77 from the core 59 and the polepieces 8 and 9. A permanent magnet 60 polarizes the core of the electromagnet. A clapper arm 61 is mounted by a spring 63 on an adjustable bracket 62 and oscillates between two gongs.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2487157A GB810589A (en) | 1956-03-09 | 1956-03-09 | Improvements in or relating to light-current contact-making pile-ups |
| GB744856A GB810588A (en) | 1956-03-09 | 1956-03-09 | Improvements in telephone subscriber's sets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB744856A GB810588A (en) | 1956-03-09 | 1956-03-09 | Improvements in telephone subscriber's sets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB810588A true GB810588A (en) | 1959-03-18 |
Family
ID=9833277
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2487157A Expired GB810589A (en) | 1956-03-09 | 1956-03-09 | Improvements in or relating to light-current contact-making pile-ups |
| GB744856A Expired GB810588A (en) | 1956-03-09 | 1956-03-09 | Improvements in telephone subscriber's sets |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2487157A Expired GB810589A (en) | 1956-03-09 | 1956-03-09 | Improvements in or relating to light-current contact-making pile-ups |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB810589A (en) |
-
1956
- 1956-03-09 GB GB2487157A patent/GB810589A/en not_active Expired
- 1956-03-09 GB GB744856A patent/GB810588A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB810589A (en) | 1959-03-18 |
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