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 telegraphy

Info

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
Application number
GB22231/20A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HALL RES CORP
Original Assignee
HALL RES CORP
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HALL RES CORP filed Critical HALL RES CORP
Publication of GB149954A publication Critical patent/GB149954A/en
Expired legal-status Critical Current

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>.
GB22231/20A 1919-08-13 1920-07-26 Improvements in methods of and apparatus for receiving signals by wireless telegraphy Expired GB149954A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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