GB244593A - Improvements in magnetic compasses - Google Patents
Improvements in magnetic compassesInfo
- Publication number
- GB244593A GB244593A GB31948/25A GB3194825A GB244593A GB 244593 A GB244593 A GB 244593A GB 31948/25 A GB31948/25 A GB 31948/25A GB 3194825 A GB3194825 A GB 3194825A GB 244593 A GB244593 A GB 244593A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bowl
- rim
- card
- compass
- course
- 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
- G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Food-Manufacturing Devices (AREA)
- Toys (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
244,593. Escallier, P. Dec. 18, 1924, [Convention date]. Mariners' and aeronautical compasses. - For facilitating the reading of a compass, particularly on an aeroplane, and enabling the pilot to follow a given course, the compass bowl 3 is rotatably mounted within a fixed bowl 1 and is provided, at the level of the card 6, with a rim 7. On the card 6 is drawn a part of a distinctive figure, such as an aeroplane 8. the remainder of which is drawn on the rim 7. The bowl 3 is also provided with a graduated rim 10 and the bowl 1 carries an index 2 which can be adjusted around an arc 20 to compensate for compass errors. The bowl 3 can be rotated by a worm 4 engaging a gear 5, the worm spindle 15 being provided with a ratchet 14 urged by a spring 16 against a detent 17 to look the gear after adjustment. To steer to a given course the bowl 3 is turned until the pointer 2 indicates the course on the scale 10, and the pilot then steers so that the figure 8 is always unbroken. To indicate the direction in which to steer when the desired course is not being followed, the part 23 of the card 6 and the corresponding part 22 of the rim 7 are coloured, and the part 22 is also marked with the letters G (left) and D (right). In a modification, spur gearing is provided for rotating the bowl 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR244593X | 1924-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB244593A true GB244593A (en) | 1927-02-10 |
Family
ID=8883550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31948/25A Expired GB244593A (en) | 1924-12-18 | 1925-12-17 | Improvements in magnetic compasses |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB244593A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2293239A (en) * | 1994-09-15 | 1996-03-20 | Fredun Ruston | Correction of errors in a magnetic compass |
| CN105157689A (en) * | 2015-09-21 | 2015-12-16 | 哈尔滨光学仪器股份有限公司 | Compass with hidden magnetic needle braking device and braking method |
-
1925
- 1925-12-17 GB GB31948/25A patent/GB244593A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2293239A (en) * | 1994-09-15 | 1996-03-20 | Fredun Ruston | Correction of errors in a magnetic compass |
| GB2293239B (en) * | 1994-09-15 | 1999-03-10 | Fredun Ruston | True magnetic compass |
| CN105157689A (en) * | 2015-09-21 | 2015-12-16 | 哈尔滨光学仪器股份有限公司 | Compass with hidden magnetic needle braking device and braking method |
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