GB349124A - Improvements in or relating to telegraphic installations - Google Patents
Improvements in or relating to telegraphic installationsInfo
- Publication number
- GB349124A GB349124A GB5431/30A GB543130A GB349124A GB 349124 A GB349124 A GB 349124A GB 5431/30 A GB5431/30 A GB 5431/30A GB 543130 A GB543130 A GB 543130A GB 349124 A GB349124 A GB 349124A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- exchange
- wire
- station
- earth
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Structure Of Telephone Exchanges (AREA)
- Alarm Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
349,124. Telegraph exchange systems. SIEMENS & HALSKE AKT.- GES., Siemensstadt, Berlin. Feb. 18, 1930, No. 5431. Convention date, Feb. 19, 1929. Addition to 306,406, [Class 40 (iii), Telegraphs, Electric]. [Class 40 (iii).] An automatic exchange for printing telegraph lines, of the kind described in the parent Specification, is adapted to utilize automatic switches ot standard construction. To this end the four-wire connections internal to the exchange are replaced by two-wire connections together with an earth or other common return, one wire being required for each direction of traffic. Thus outgoing signals from the transmitting relay S1 at the station T1 are received over the line L by the exchange relay E1 and passed to the sending-on relay S<1>3 for another station T3 via earth return, the single wire a, and switch-arm o on its third contact. Similarlv incoming signals from sender S3 at station T3 are received by the receiving relay E<1>1 at station T1 via exchange relay E3, earth return, armature e3, wire a3, switch arm k in its third position, single wire b, and sending-on relay S<1>1.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE317724T | 1928-02-18 | ||
| DES84238D DE587628C (en) | 1928-02-18 | 1928-02-18 | Telegraph system in which the connection of the individual subscriber stations is made by self-connecting exchanges |
| DES86499D DE596041C (en) | 1928-07-06 | 1928-07-06 | Telegraph system, in particular with dialing operation, in which the anchors of the relays used to transmit the telegraph characters (e.g. polarized relays) have two rest positions |
| DES90074D DE640494C (en) | 1929-02-19 | 1929-02-19 | Telegraph system in which separate circuits are provided for the two opposite transmission paths of each connection within the self-access switching center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB349124A true GB349124A (en) | 1931-05-18 |
Family
ID=31950618
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5373/29A Expired GB306406A (en) | 1928-02-18 | 1929-02-18 | Improvements in or relating to telegraphic installations |
| GB6146/29A Expired GB314974A (en) | 1928-02-18 | 1929-02-25 | Improvements in or relating to telegraphic exchange systems |
| GB24987/29A Expired GB317724A (en) | 1928-02-18 | 1929-08-15 | |
| GB5431/30A Expired GB349124A (en) | 1928-02-18 | 1930-02-18 | Improvements in or relating to telegraphic installations |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5373/29A Expired GB306406A (en) | 1928-02-18 | 1929-02-18 | Improvements in or relating to telegraphic installations |
| GB6146/29A Expired GB314974A (en) | 1928-02-18 | 1929-02-25 | Improvements in or relating to telegraphic exchange systems |
| GB24987/29A Expired GB317724A (en) | 1928-02-18 | 1929-08-15 |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US1823978A (en) |
| BE (5) | BE386518A (en) |
| FR (1) | FR669817A (en) |
| GB (4) | GB306406A (en) |
| NL (3) | NL36364C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2468574A (en) * | 1945-03-23 | 1949-04-26 | Teletype Corp | Selective control of printer motors at outlying telegraph stations |
-
0
- BE BE267873D patent/BE267873A/xx unknown
- NL NL37568D patent/NL37568C/xx active
- NL NL35326D patent/NL35326C/xx active
- NL NL36364D patent/NL36364C/xx active
- BE BE358254D patent/BE358254A/xx unknown
- BE BE367873D patent/BE367873A/xx unknown
- BE BE363110D patent/BE363110A/xx unknown
- BE BE386518D patent/BE386518A/xx unknown
-
1929
- 1929-02-18 GB GB5373/29A patent/GB306406A/en not_active Expired
- 1929-02-18 US US340882A patent/US1823978A/en not_active Expired - Lifetime
- 1929-02-18 FR FR669817D patent/FR669817A/en not_active Expired
- 1929-02-25 GB GB6146/29A patent/GB314974A/en not_active Expired
- 1929-08-15 GB GB24987/29A patent/GB317724A/en not_active Expired
-
1930
- 1930-02-18 GB GB5431/30A patent/GB349124A/en not_active Expired
- 1930-02-19 US US429739A patent/US1859776A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1823978A (en) | 1931-09-22 |
| FR669817A (en) | 1929-11-21 |
| NL36364C (en) | |
| GB306406A (en) | 1930-05-19 |
| BE358254A (en) | |
| GB314974A (en) | 1930-05-26 |
| BE363110A (en) | |
| BE386518A (en) | |
| NL37568C (en) | |
| GB317724A (en) | 1930-03-27 |
| NL35326C (en) | |
| US1859776A (en) | 1932-05-24 |
| BE267873A (en) | |
| BE367873A (en) |
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