GB179930A - Improvements in or relating to telephone systems - Google Patents
Improvements in or relating to telephone systemsInfo
- Publication number
- GB179930A GB179930A GB12869/22A GB1286922A GB179930A GB 179930 A GB179930 A GB 179930A GB 12869/22 A GB12869/22 A GB 12869/22A GB 1286922 A GB1286922 A GB 1286922A GB 179930 A GB179930 A GB 179930A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- relays
- relating
- telephone systems
- automatic telephone
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Percussion Or Vibration Massage (AREA)
- Telephone Set Structure (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
179,930. Automatic Telephone Manufacturing Co., Ltd., (Assignees of Lomax, C. E.). May 14, 1921, [Convention date]. Relays.-The relays 100, 101, 102 of an automatic telephone selector are mounted close together, with their poles disposed as shown at the foot of Fig. 2, for the purpose of influencing each other's operation by magnetic leakage. For example, the leakage flux from the line relay 100, which becomes saturated at the termination of the impulses, assists the energization of the relay 102. This effect is enhanced by providing the relay 100 with a brass heel piece. Specification 199,042 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US469414A US1674652A (en) | 1921-05-14 | 1921-05-14 | Automatic telephone system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB179930A true GB179930A (en) | 1923-08-07 |
Family
ID=23863694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12869/22A Expired GB179930A (en) | 1921-05-14 | 1922-05-06 | Improvements in or relating to telephone systems |
Country Status (3)
Country | Link |
---|---|
US (1) | US1674652A (en) |
FR (1) | FR550784A (en) |
GB (1) | GB179930A (en) |
-
0
- FR FR550784D patent/FR550784A/fr not_active Expired
-
1921
- 1921-05-14 US US469414A patent/US1674652A/en not_active Expired - Lifetime
-
1922
- 1922-05-06 GB GB12869/22A patent/GB179930A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR550784A (en) | 1923-03-20 |
US1674652A (en) | 1928-06-26 |
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