GB149954A - Improvements in methods of and apparatus for receiving signals by wireless telegraphy - Google Patents
Improvements in methods of and apparatus for receiving signals by wireless telegraphyInfo
- Publication number
- GB149954A GB149954A GB22231/20A GB2223120A GB149954A GB 149954 A GB149954 A GB 149954A GB 22231/20 A GB22231/20 A GB 22231/20A GB 2223120 A GB2223120 A GB 2223120A GB 149954 A GB149954 A GB 149954A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- resonator
- jet
- coil
- hall
- 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
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
149,954. Hall Research Corporation, (Assignees of Hall, R. E.). Aug. 13, 1919, [Convention date]. Telephonic relays, repeaters, and translators.-In a thermoelectric relay described for use in a wireless receiver, low-frequency impulses in the anode circuit of the heterodyne receiver energize the magnet 10 and cause the resonator 46 to vibrate. A jet of air is normally directed along the axis of the coil 26, which is composed of fine Wollaston wire and connected in series wth the relay 67 and battery B<2>. Air-pulses in the resonator 46 produced by its vibration deflect the jet upon the wire, lowering its temperature and resistance, and causing an increased current to operate the relay 67, which closes its contact at S'. Switches are furnished for including an ammeter 24 and telephone T in the circuit traversing the coil 26, to provide a visual and an aural indication of current variations therein. The relay 67 may be short-circuited by a switch S<2>.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US149954XA | 1919-08-13 | 1919-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB149954A true GB149954A (en) | 1922-01-26 |
Family
ID=21768980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22231/20A Expired GB149954A (en) | 1919-08-13 | 1920-07-26 | Improvements in methods of and apparatus for receiving signals by wireless telegraphy |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB149954A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4776147A (en) * | 1986-12-17 | 1988-10-11 | International Paper Company | High capacity continuous package seam and tab folding and tacking apparatus |
-
1920
- 1920-07-26 GB GB22231/20A patent/GB149954A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4776147A (en) * | 1986-12-17 | 1988-10-11 | International Paper Company | High capacity continuous package seam and tab folding and tacking apparatus |
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