GB558187A - A method of and means for obtaining a remote indication of movement - Google Patents

A method of and means for obtaining a remote indication of movement

Info

Publication number
GB558187A
GB558187A GB740942A GB740942A GB558187A GB 558187 A GB558187 A GB 558187A GB 740942 A GB740942 A GB 740942A GB 740942 A GB740942 A GB 740942A GB 558187 A GB558187 A GB 558187A
Authority
GB
United Kingdom
Prior art keywords
lamp
compass
cell
photo
mirror
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
GB740942A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB740942A priority Critical patent/GB558187A/en
Publication of GB558187A publication Critical patent/GB558187A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
    • G01C17/20—Observing the compass card or needle
    • G01C17/26—Observing the compass card or needle using electric pick-offs for transmission to final indicator, e.g. photocell

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

558,187. Photo-electric compass reading apparatus. HATAY, C. G. June 1, 1942, Nos. 7409 and 12589. [Class 40 (iii)] A magnetic compass comprising a magnet assembly immersed in liquid in a bowl is scanned by a rotating light beam in association with a photo-electric cell to produce cyclic electric pulses the phase of which is detected to indicate the position of the magnetic compass at a distance. In the arrangement shown in Fig. 1, light from a lamp 11 is directed to an annular mirror 8 in the compass bowl 6, and is reflected to an inclined mirror 7 on the magnet assembly 1, then to a fixed inclined mirror 20, and finally to a photo-electric cell 23. The lamp 11 is rotated by a motor 16, so that once in each revolution the light reaches the cell 23, the moment this occurs depending on the position of the mirror 7 and magnet assembly 1. In another arrangement, Fig. 6, the lamp 64 and the cell 73 are in axial alignment with the compass bowl 57 ; the light path is indicated by the arrows 67 ... 72 ; and the scanning is performed by the rotation of the lamp structure 65. The distant indications may be given by a stroboscopic device 77 synchronized with the rotation of the lamp structure 65. Several modifications are described.
GB740942A 1942-06-01 1942-06-01 A method of and means for obtaining a remote indication of movement Expired GB558187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB740942A GB558187A (en) 1942-06-01 1942-06-01 A method of and means for obtaining a remote indication of movement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB740942A GB558187A (en) 1942-06-01 1942-06-01 A method of and means for obtaining a remote indication of movement

Publications (1)

Publication Number Publication Date
GB558187A true GB558187A (en) 1943-12-24

Family

ID=9832565

Family Applications (1)

Application Number Title Priority Date Filing Date
GB740942A Expired GB558187A (en) 1942-06-01 1942-06-01 A method of and means for obtaining a remote indication of movement

Country Status (1)

Country Link
GB (1) GB558187A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688250A (en) * 1954-03-09 1954-09-07 Us Commerce Meter for determining the direction and velocity of water currents

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688250A (en) * 1954-03-09 1954-09-07 Us Commerce Meter for determining the direction and velocity of water currents

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