GB191417021A - Improvements in and relating to a Registering Compass. - Google Patents

Improvements in and relating to a Registering Compass.

Info

Publication number
GB191417021A
GB191417021A GB191417021DA GB191417021A GB 191417021 A GB191417021 A GB 191417021A GB 191417021D A GB191417021D A GB 191417021DA GB 191417021 A GB191417021 A GB 191417021A
Authority
GB
United Kingdom
Prior art keywords
compass
registering
bore
hollow
relating
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 - Lifetime
Application number
Inventor
Gerard Eric
Lohest Max
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 of GB191417021A publication Critical patent/GB191417021A/en
Application filed by Individual filed Critical Individual
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Abstract

17,021. GÚrard, E., and Lohest, M. July 17, 1913, [Convention date]. Void [Published under Sect. 91 of the Act]. Magnetic compasses.-A registering-compass for use in bore-holes comprises a hollow compass needle 3 carrying a radio-active mass 10, which acts upon a light sensitive surface 11 to produce a record after the lapse of a considerable time, for example, half an hour. The compass proper is carried upon a heavy cylinder 1, which is hollow at the base and provided with grooves 6 for causing the adhesion of a plastic mass, such as clay, used for taking a. cast of the bottom of the bore-hole and so determining the requisite direction by means of the recorded position of the compass needle.
GB191417021D 1913-07-17 1914-07-17 Improvements in and relating to a Registering Compass. Expired - Lifetime GB191417021A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE191417021X 1913-07-17

Publications (1)

Publication Number Publication Date
GB191417021A true GB191417021A (en)

Family

ID=32330735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191417021D Expired - Lifetime GB191417021A (en) 1913-07-17 1914-07-17 Improvements in and relating to a Registering Compass.

Country Status (1)

Country Link
GB (1) GB191417021A (en)

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