GB378251A - Apparatus for automatic production and transmission of telegraphic or radiotelegraphic signals - Google Patents
Apparatus for automatic production and transmission of telegraphic or radiotelegraphic signalsInfo
- Publication number
- GB378251A GB378251A GB27871/31A GB2787131A GB378251A GB 378251 A GB378251 A GB 378251A GB 27871/31 A GB27871/31 A GB 27871/31A GB 2787131 A GB2787131 A GB 2787131A GB 378251 A GB378251 A GB 378251A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brush
- drum
- signalling
- roller
- magnet
- 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
- H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
- H04L15/04—Apparatus or circuits at the transmitting end
- H04L15/22—Apparatus or circuits for sending one or a restricted number of signals, e.g. distress signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
- Brushes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR583405X | 1930-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB378251A true GB378251A (en) | 1932-08-11 |
Family
ID=8958656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27871/31A Expired GB378251A (en) | 1930-10-08 | 1931-10-07 | Apparatus for automatic production and transmission of telegraphic or radiotelegraphic signals |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE583405C (fr) |
| FR (2) | FR703473A (fr) |
| GB (1) | GB378251A (fr) |
-
1930
- 1930-10-08 FR FR703473D patent/FR703473A/fr not_active Expired
- 1930-11-21 DE DE1930583405D patent/DE583405C/de not_active Expired
-
1931
- 1931-09-09 FR FR40719D patent/FR40719E/fr not_active Expired
- 1931-10-07 GB GB27871/31A patent/GB378251A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR40719E (fr) | 1932-08-22 |
| FR703473A (fr) | 1931-04-30 |
| DE583405C (de) | 1933-09-04 |
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