GB1336565A - Levelling apparatus - Google Patents
Levelling apparatusInfo
- Publication number
- GB1336565A GB1336565A GB1336565DA GB1336565A GB 1336565 A GB1336565 A GB 1336565A GB 1336565D A GB1336565D A GB 1336565DA GB 1336565 A GB1336565 A GB 1336565A
- Authority
- GB
- United Kingdom
- Prior art keywords
- staff
- tape
- tube
- dec
- extending
- 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
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/04—Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Adhesive Tape Dispensing Devices (AREA)
Abstract
1336565 Levels J I DAVIES and B JONES 9 Dec 1970 [11 Dec 1969] 60416/69 Heading G1F A liquid level comprises a transparent tube 22 mounted on a staff 12 and connected by a flexible tube 10 to a liquid reservoir 11, with a pointer 19 or a scale (34), Figs. 3 and 4, (not shown) longitudinally movable on the staff relative to the transparent tube. As shown, the staff is a square-section aluminium tube 15 with chamfered ends 16, and the transparent tube 22 has an integral longitudinal flange 23 by which it is clamped to the staff. A valve at the free end of the tube 22 or at its junction with the flexible tube allows retention of the liquid in the system during transport. The reservoir 11 has a closeable breather. In Figs. 3 and 4, (not shown) an endless flexible tape (34) passes round pulleys (35, 36) near the ends of the staff, one run of the tape extending through the tubular staff and the other run extending along a channel-shaped guide (33) on one face of the staff. The tape carries two scales extending in opposite directions from a common zero, at which point a plastics block (39) is attached to the tape to act as a grip for moving the tape.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6041669 | 1969-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1336565A true GB1336565A (en) | 1973-11-07 |
Family
ID=10485569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1336565D Expired GB1336565A (en) | 1969-12-11 | 1969-12-11 | Levelling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1336565A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2283818A (en) * | 1993-11-10 | 1995-05-17 | John Ashworth | Level-indicating device |
-
1969
- 1969-12-11 GB GB1336565D patent/GB1336565A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2283818A (en) * | 1993-11-10 | 1995-05-17 | John Ashworth | Level-indicating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| PE20 | Patent expired after termination of 20 years |