GB558501A - An improved interval mether and indicator therefor - Google Patents

An improved interval mether and indicator therefor

Info

Publication number
GB558501A
GB558501A GB1224342A GB1224342A GB558501A GB 558501 A GB558501 A GB 558501A GB 1224342 A GB1224342 A GB 1224342A GB 1224342 A GB1224342 A GB 1224342A GB 558501 A GB558501 A GB 558501A
Authority
GB
United Kingdom
Prior art keywords
time
shutter
bars
neon tube
received
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
GB1224342A
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.)
TIMOTHY FRANK BLUDWORTH
Original Assignee
TIMOTHY FRANK BLUDWORTH
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 TIMOTHY FRANK BLUDWORTH filed Critical TIMOTHY FRANK BLUDWORTH
Priority to GB1224342A priority Critical patent/GB558501A/en
Publication of GB558501A publication Critical patent/GB558501A/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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

558,501. Measuring short time-intervals; indicating apparatus. HUGHES & SON, Ltd., H. (Bludworth, T. F.). Aug. 31, 1942, No. 12243. [Class 106 (iv)] [Also in Group XVIII] A device for indicating short timeintervals comprises a stack of light transmitting bars having inner and outer ends and means to illuminate the inner end of at least one of said bars at the end of the measured interval of time. The device is shown as applied to echo-sounding apparatus in which a semi-cylindrical shutter 14 is rotated by a constant speed motor, and when in the position shown in Fig. 2 closes contacts to light a neon tube 6 and to send a sound impulse from a transmitter 1, Fig. 1. The signal is reflected from the ocean bed and is received by a receiver 3 and amplifier 5 to extinguish the neon tube 6, at which time the shutter has uncovered a number of bars 13 of translucent material, of which the ends adjacent a scale 10 have been glowing to indicate the depth. Alternatively the neon tube is flashed only when the signal is received. In a modification, the shutter is cylindrical with a small aperture illuminating only one bar at a time.
GB1224342A 1942-08-31 1942-08-31 An improved interval mether and indicator therefor Expired GB558501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1224342A GB558501A (en) 1942-08-31 1942-08-31 An improved interval mether and indicator therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1224342A GB558501A (en) 1942-08-31 1942-08-31 An improved interval mether and indicator therefor

Publications (1)

Publication Number Publication Date
GB558501A true GB558501A (en) 1944-01-07

Family

ID=10001005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1224342A Expired GB558501A (en) 1942-08-31 1942-08-31 An improved interval mether and indicator therefor

Country Status (1)

Country Link
GB (1) GB558501A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1235605B (en) * 1961-05-23 1967-03-02 British Aircraft Corp Ltd Measuring device for precise optical determination of the displacement of two parts that can move relative to one another

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1235605B (en) * 1961-05-23 1967-03-02 British Aircraft Corp Ltd Measuring device for precise optical determination of the displacement of two parts that can move relative to one another

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