GB617785A - Improvements in or relating to angle measuring instruments - Google Patents
Improvements in or relating to angle measuring instrumentsInfo
- Publication number
- GB617785A GB617785A GB17406/46A GB1740646A GB617785A GB 617785 A GB617785 A GB 617785A GB 17406/46 A GB17406/46 A GB 17406/46A GB 1740646 A GB1740646 A GB 1740646A GB 617785 A GB617785 A GB 617785A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- pendulum
- switches
- contact
- switch
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10
Abstract
617,785. Gravity switches. BROWNING, R. O. June 11, 1946, No. 17406. Convention date, June 16, 1945. [Class 38 (v)] [Also in Group XX] A pair of gravity switches is mounted on a pendulum forming part of a sextant or like instrument to control an electric circuit whereby the motion of the pendulum relative to the instrument is arrested or its position recorded when passing through the vertical. As shown, each switch comprises a housing 107 containing a fluid 111 such as mercury on which is supported a conductor 112 having projections 113, 114. The projection 114 is pivotally engaged by a rod 116 and the projection 113 is adapted to contact a rod 108 when the switch is horizontal or tilted towards the rod. In the form shown, the contact is made by the switch between the leads 102 and 103 connected to the rod 108 and the mercury. In another.form, the contact is made between the rods 108 and 116, the latter being connected to a mounting strap 128. The two switches are mounted on the pendulum bob in opposite directions and connected in series. Another pair of switches may be arranged on the bob at right angles to the first and connected in series with them to ensure that the sextant reading is taken when the pendulum is in a true vertical position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US617785XA | 1945-06-16 | 1945-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB617785A true GB617785A (en) | 1949-02-11 |
Family
ID=22038081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17406/46A Expired GB617785A (en) | 1945-06-16 | 1946-06-11 | Improvements in or relating to angle measuring instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB617785A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987007713A1 (en) * | 1986-06-04 | 1987-12-17 | Rolf Winter | Angular measurement device |
| CN105509719A (en) * | 2016-01-12 | 2016-04-20 | 同济大学 | Portable multifunctional rock-soil body structure reconstruction auxiliary tool |
-
1946
- 1946-06-11 GB GB17406/46A patent/GB617785A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987007713A1 (en) * | 1986-06-04 | 1987-12-17 | Rolf Winter | Angular measurement device |
| CN105509719A (en) * | 2016-01-12 | 2016-04-20 | 同济大学 | Portable multifunctional rock-soil body structure reconstruction auxiliary tool |
| CN105509719B (en) * | 2016-01-12 | 2017-11-07 | 同济大学 | A kind of Portable multifunctional Rock-soil Mass Structure rebuilds aid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR981785A (en) | Electrical signal translator systems | |
| CA930266A (en) | Frictionless rocker arm fulcrum assembly | |
| JPS522784A (en) | Mass analyzing device | |
| GB617785A (en) | Improvements in or relating to angle measuring instruments | |
| SU114133A1 (en) | Potentiometric linear acceleration sensor | |
| SU138662A1 (en) | Electromagnetic measuring device | |
| JPS5239142A (en) | Electrical device of fully equipped shipment type | |
| SU813131A1 (en) | Contact measuring head | |
| ES82184U (en) | Ball holder device for electrical measuring devices (Machine-translation by Google Translate, not legally binding) | |
| FR924481A (en) | Improvements to the order of series or electrical contact systems | |
| CH253362A (en) | Tuning device comprising an oscillating circuit. | |
| FR1108534A (en) | Improvements to devices indicating the amplitude frequency response of an electrical circuit | |
| CA428170A (en) | D'arsonval electrical measuring instrument | |
| FR952682A (en) | Electrical measurement systems | |
| FR932175A (en) | Self-balancing electrical indicating, recording or measuring control devices | |
| AU128396B2 (en) | Improvements in instruments for measuring the frequency ofan electrical oscillation | |
| RU92006485A (en) | HORIZON INDICATOR | |
| AU126108B2 (en) | Improvements in or relating to circuit arrangements for limiting the amplitude variations ofan electrical oscillation | |
| AU126767B2 (en) | Improvements in or relating to self-balancing electrical measuring, recording, indicating or controlling systems | |
| CA492253A (en) | Circuit arrangements for stabilising the amplitude of electrical oscillations | |
| CA430847A (en) | Electrical measuring instrument | |
| CA427278A (en) | Electrical measuring instrument | |
| CA429602A (en) | Electrical measuring or indicating system | |
| CA441044A (en) | Electrical cut-out housing | |
| AU673846A (en) | Improvements in or relating to self-balancing electrical measuring, recording, indicating or controlling systems |