GB251429A - Method and device for detecting and locating ores by electromagnetic means - Google Patents

Method and device for detecting and locating ores by electromagnetic means

Info

Publication number
GB251429A
GB251429A GB1104625A GB1104625A GB251429A GB 251429 A GB251429 A GB 251429A GB 1104625 A GB1104625 A GB 1104625A GB 1104625 A GB1104625 A GB 1104625A GB 251429 A GB251429 A GB 251429A
Authority
GB
United Kingdom
Prior art keywords
field
frame
plane
telephone
frames
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
GB1104625A
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.)
ELEK SK MALMLETNING AB
Original Assignee
ELEK SK MALMLETNING AB
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 ELEK SK MALMLETNING AB filed Critical ELEK SK MALMLETNING AB
Priority to GB1104625A priority Critical patent/GB251429A/en
Publication of GB251429A publication Critical patent/GB251429A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils

Abstract

251,429. Marks, E. C. R., (Aktiebolaget Elektrisk Malmletning). April 28, 1925. Locating conductors; magnetic tests. -Cores &c. are located by the disturbance they cause to an alternating magnetic field made to penetrate the ground, the ratio between the strength of the field at two points being determined by employing two test coils wound on frames I, II, and connected in opposition. In parallel with these frames is connected a telephone receiver or galvanometer T through an amplifier F. The frame I is placed at one of the points to be examined and its plane is varied until no sound is heard in the telephone T, indicating that the plane of the coil coincides with the direction of the field. The frame is then turned through a right-angle, so that its plane is at right-angles to the field. The frame II is then placed at the second point to be examined, connected in opposition to the frame I, and turned until no sound is given in the telephone T. The strength of the field is calculated from the angle between the plane of the frame II and the direction of the field. Instead of rotating the coil II, a variable inductance L may be connected in parallel or in series with the frame, and adjusted until no indication is given in the telephone. The ratio between the strengths of field at the positions of the two frames may then be calculated.
GB1104625A 1925-04-28 1925-04-28 Method and device for detecting and locating ores by electromagnetic means Expired GB251429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1104625A GB251429A (en) 1925-04-28 1925-04-28 Method and device for detecting and locating ores by electromagnetic means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1104625A GB251429A (en) 1925-04-28 1925-04-28 Method and device for detecting and locating ores by electromagnetic means

Publications (1)

Publication Number Publication Date
GB251429A true GB251429A (en) 1926-05-06

Family

ID=9979007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1104625A Expired GB251429A (en) 1925-04-28 1925-04-28 Method and device for detecting and locating ores by electromagnetic means

Country Status (1)

Country Link
GB (1) GB251429A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999004294A1 (en) * 1997-07-16 1999-01-28 Radiodetection Limited Locating concealed conductors
EP1189076A2 (en) * 2000-09-15 2002-03-20 Firma Ing. Klaus Ebinger Method for locating objects and detecting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999004294A1 (en) * 1997-07-16 1999-01-28 Radiodetection Limited Locating concealed conductors
US6297736B1 (en) 1997-07-16 2001-10-02 Radiodetection Limited Locating concealed conductors
EP1189076A2 (en) * 2000-09-15 2002-03-20 Firma Ing. Klaus Ebinger Method for locating objects and detecting device
EP1189076A3 (en) * 2000-09-15 2003-05-07 Firma Ing. Klaus Ebinger Method for locating objects and detecting device

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