GB973106A - - Google Patents
Info
- Publication number
- GB973106A GB973106A GB973106DA GB973106A GB 973106 A GB973106 A GB 973106A GB 973106D A GB973106D A GB 973106DA GB 973106 A GB973106 A GB 973106A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- april
- coil
- screw
- seismographs
- 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.)
- Active
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- Geophysics And Detection Of Objects (AREA)
Abstract
973,106. Seismographs; measuring electrically. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 11, 1962 [April 24, 1961], No. 13989/62 Headings G1J and G1N. In a transportable seismographic apparatus, the rocking lever 1b has a pair of pivots 4, mounted on a cross-piece 3, which,when the apparatus is not in use, may be held clear of their thrust bearings 5 by means of a screw 17 which clamps the end of the lever against abutments 19 of the supporting frame. In use, the lever 1b, which is forked is loaded by slidably adjustable weights 15, locked in position by screw 16, and a tension spring 13 passing between the forks and acting between a rod 14 integral with lever 1b and an upper adjustable supporting bracket. The floating end of the lever 1b has a portion 1a, connected to it through a toggle-joint 1c, which supports a coil 2 within the pot of a permanent magnet 2a, movement of the coil 2 giving the output signal.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB973106A true GB973106A (en) |
Family
ID=1754461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB973106D Active GB973106A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB973106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012039681A1 (en) * | 2010-09-22 | 2012-03-29 | National University Of Singapore | Vibration detector and method |
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0
- GB GB973106D patent/GB973106A/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012039681A1 (en) * | 2010-09-22 | 2012-03-29 | National University Of Singapore | Vibration detector and method |
| US9297915B2 (en) | 2010-09-22 | 2016-03-29 | National University Of Singapore | Vibration detector and method |
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