GB661702A - Improvements in teleprinter telegraph systems - Google Patents
Improvements in teleprinter telegraph systemsInfo
- Publication number
- GB661702A GB661702A GB1035949A GB1035949A GB661702A GB 661702 A GB661702 A GB 661702A GB 1035949 A GB1035949 A GB 1035949A GB 1035949 A GB1035949 A GB 1035949A GB 661702 A GB661702 A GB 661702A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signals
- shaft
- bar
- transmitter
- various stations
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
661,702. Telegraph systems. CREED & CO., Ltd. April 17, 1950 [April 19, 1949], No. 10359/49. Class 40 (iii). In a telegraph system having a number of teleprinter stations some or all of which may be selected for simultaneous operation, as in a party-line or omnibus system, each station is provided with an answer-back device and comprises means whereby station identification signals sent by the respective answer-back devices are transmitted in a pre-arranged sequence. In one embodiment the answerback device of Specification 351,018 in which a shaft A carries a drum provided with rows of projections corresponding to the coded signals and a cam member F operating a bar to rock a universal bar D to release a transmitter for each code signal, the members F at the various stations T1, T2, T3... are provided with operating portions (1,2) (4,5) (7,8) ... The members F at the various stations are released simultaneously, and restricted or shortened identification signals are transmitted in sequence. In addition the cams F may be arranged to close a pair of contacts during corresponding different portions of their revolutions. A second arrangement comprises a modification of the answer-back device of Specification 452,446 in which a shaft A carrying a drum having wards corresponding to the signals is rotated slowly relatively to the speed of a shaft C controlling the signal transmitter. After shaft A has commenced rotation a cam K allows a lever H to move anticlockwise so that a lever C1 moves to the right and operates a bar F to release the signal transmitter, the lever C1 being operated to control the transmitter for each code combination of the identification signal. The cams K at the various stations T1, T2, T3 ... are shaped as shown in Fig. 5, so that the recessed portions permitting the actuation of the bar F by the cam B are restricted to provide a shortened identification signal and are angularly displaced so that the signals are sent in succession from the various stations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1035949A GB661702A (en) | 1949-04-19 | 1949-04-19 | Improvements in teleprinter telegraph systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1035949A GB661702A (en) | 1949-04-19 | 1949-04-19 | Improvements in teleprinter telegraph systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB661702A true GB661702A (en) | 1951-11-28 |
Family
ID=9966391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1035949A Expired GB661702A (en) | 1949-04-19 | 1949-04-19 | Improvements in teleprinter telegraph systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB661702A (en) |
-
1949
- 1949-04-19 GB GB1035949A patent/GB661702A/en not_active Expired
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