GB191225028A - Improvements relating to the Mariners' Compass. - Google Patents

Improvements relating to the Mariners' Compass.

Info

Publication number
GB191225028A
GB191225028A GB191225028DA GB191225028A GB 191225028 A GB191225028 A GB 191225028A GB 191225028D A GB191225028D A GB 191225028DA GB 191225028 A GB191225028 A GB 191225028A
Authority
GB
United Kingdom
Prior art keywords
mariners
compass
improvements relating
compasses
aperture
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
Inventor
William David Whyte
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
Application granted granted Critical
Publication of GB191225028A publication Critical patent/GB191225028A/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
    • G01C17/24—Illumination

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

25,028. Whyte, W. D. Nov. 1. Mariners' compasses.-In compasses illuminated from below where the light is dimmed by a device for reducing the size of the aperture through which the light passes, the aperture-reducing device consists of a pair of semicircular members j, k geared together and operated by means of a handle o on a rod n attached to the member j.
GB191225028D 1912-11-01 1912-11-01 Improvements relating to the Mariners' Compass. Expired GB191225028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191225028T 1912-11-01

Publications (1)

Publication Number Publication Date
GB191225028A true GB191225028A (en) 1913-06-05

Family

ID=32574448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191225028D Expired GB191225028A (en) 1912-11-01 1912-11-01 Improvements relating to the Mariners' Compass.

Country Status (1)

Country Link
GB (1) GB191225028A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424575A (en) * 1944-06-07 1947-07-29 Vincent A Marco Light shutter and dimmer
US2617013A (en) * 1946-11-11 1952-11-04 Gen Electric Co Ltd Light-reflecting simmering shutter for high-pressure metal vapor lamps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424575A (en) * 1944-06-07 1947-07-29 Vincent A Marco Light shutter and dimmer
US2617013A (en) * 1946-11-11 1952-11-04 Gen Electric Co Ltd Light-reflecting simmering shutter for high-pressure metal vapor lamps

Similar Documents

Publication Publication Date Title
GB191225028A (en) Improvements relating to the Mariners' Compass.
GB190920563A (en) Improvements in Mariners' Compasses and like Instruments.
GB191516301A (en) Improvements in Sight Compasses.
GB561784A (en) Distance mileage and route finder for use with globes
FR486332A (en) Aerial compass for use by designers, painters and sculptors
GB191418308A (en) A Sighting Device for Ordnance.
GB191301311A (en) Improvements in Compass Dividers.
GB463778A (en) Self-illuminating magnifier
GB378347A (en) Improvements in or relating to photographic cameras with telemeters
GB191400281A (en) Improvements in or relating to Light Projectors, such as Search Lights and the like.
GB194197A (en) Improvements in or relating to electric torches
GB103013A (en) Improvements in or relating to Regulators for Gas Burners and the like.
FR492782A (en) Aviation compass improvements
FR464238A (en) Ellipsograph compass
GB191230004A (en) An Improved Device for Lighting Gas Lamps & the like.
GB191514584A (en) An Improved Map Reader and Compass.
GB191310212A (en) Improvements in Proportional Drawing Instruments.
GB105140A (en) Improvements in Oil Lamps or Lanterns.
GB191214269A (en) Improvements in Light-projecting Apparatus for Attachment to Small Arms.
GB191300909A (en) Improvements in or relating to Regulators suitable for Gas Burners.
FR458549A (en) Transport device with click device for the representation and projection of inscriptions, advertisements, etc., illuminated by incandescent lamps
GB191106571A (en) An Improvement in Compasses.
GB190912203A (en) Improvements relating to Pocket Magnetic Compasses.
GB190429416A (en) Improvements in and in connection with Clockwork-operated Mechanism for Automatically Lighting and Extinguishing Gas or similar Lights.
FR493980A (en) Lighting device for magnetic compasses, scientific instruments, etc.