GB673920A - Improvements in or relating to electric make and break switches - Google Patents

Improvements in or relating to electric make and break switches

Info

Publication number
GB673920A
GB673920A GB3251349A GB3251349A GB673920A GB 673920 A GB673920 A GB 673920A GB 3251349 A GB3251349 A GB 3251349A GB 3251349 A GB3251349 A GB 3251349A GB 673920 A GB673920 A GB 673920A
Authority
GB
United Kingdom
Prior art keywords
contact
motor
shaft
fixed
pins
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
GB3251349A
Inventor
Derrick Reginald Mallard
Arthur Walter Goodliffe
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.)
Cobham Mission Systems Wimborne Ltd
Original Assignee
Flight Refuelling Ltd
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 Flight Refuelling Ltd filed Critical Flight Refuelling Ltd
Priority to GB3251349A priority Critical patent/GB673920A/en
Publication of GB673920A publication Critical patent/GB673920A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
    • G01S13/781—Secondary Surveillance Radar [SSR] in general
    • G01S13/784—Coders or decoders therefor; Degarbling systems; Defruiting systems
    • 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)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)

Abstract

673,920. Time switches. FLIGHT REFUELLING, Ltd. Dec. 18, 1950. [Dec. 19, 1949] No. 32513/49. Class 38 (v). A switch for making and breaking a circuit, e.g. that of a radar beacon, a number of times at predetermined intervals, comprises a fixed, conducting cylinder 14 having a number of holes 19 into which contact pins 20 may be placed in any desired arrangement, corresponding for example to a group of morse code letters. The cylinder 14 is fixed to an insulating plate 11 which is fixed to a metal mounting plate 10, carrying an electric motor 12 driving a shaft 22 over gearing 13, 23. Mounted on the shaft is a disc 25 comprising an insulating plate 26 having conducting parts 27, 28 recessed into its opposite faces. The part 27 has a hub 29 surrounding the shaft and a contact 30 which is wide enough to engage pins in two adjacent holes simultaneously, so that there is continuous connection between the member 30 and base 14 while the member 30 is passing over pins in adjacent holes, the connection being broken when it passes over unoccupied holes. The motor is started by a relay energized by an impulse from an electronic control circuit, the motor circuit being maintained over contact springs 45, 46, which bear on the upper conducting part 28. The latter has a radial slot 31 which comes into register with contact 46 to stop the motor after one revolution.
GB3251349A 1949-12-19 1949-12-19 Improvements in or relating to electric make and break switches Expired GB673920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3251349A GB673920A (en) 1949-12-19 1949-12-19 Improvements in or relating to electric make and break switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3251349A GB673920A (en) 1949-12-19 1949-12-19 Improvements in or relating to electric make and break switches

Publications (1)

Publication Number Publication Date
GB673920A true GB673920A (en) 1952-06-11

Family

ID=10339746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3251349A Expired GB673920A (en) 1949-12-19 1949-12-19 Improvements in or relating to electric make and break switches

Country Status (1)

Country Link
GB (1) GB673920A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766338A (en) * 1954-05-11 1956-10-09 William F Jamieson Dwell rotor for a distributor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766338A (en) * 1954-05-11 1956-10-09 William F Jamieson Dwell rotor for a distributor

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