GB548512A - Improvements in or relating to theodolites and other angle measuring instruments - Google Patents
Improvements in or relating to theodolites and other angle measuring instrumentsInfo
- Publication number
- GB548512A GB548512A GB1082741A GB1082741A GB548512A GB 548512 A GB548512 A GB 548512A GB 1082741 A GB1082741 A GB 1082741A GB 1082741 A GB1082741 A GB 1082741A GB 548512 A GB548512 A GB 548512A
- Authority
- GB
- United Kingdom
- Prior art keywords
- socket
- spigot
- circle
- triback
- alidade
- 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
- G01C1/00—Measuring angles
- G01C1/02—Theodolites
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Pivots And Pivotal Connections (AREA)
- Forging (AREA)
Abstract
548,512. Theodolites and the like. COOKE, TROUGHTON & SIMMS, Ltd., and TAYLOR, E. W. Aug. 25, 1941, No. 10827. [Class 97 (ii)] The vertical bearings of the three relatively rotatable parts of a theodolite or the like are arranged so that the four cylindrical bearing surfaces lie on the surface of a single cylinder, two of the bearing surfaces being continuous. The upper and lower continuous bearing surfaces of a spigot 1, Fig. 1, carried by the alidade 2 are engaged respectively by the circle socket 5 carrying the circle and by the socket 3 secured to the fixed triback or base 4. The spigot 1 is provided with a ball thrust bearing 7 arranged between it and a plate 6 and the spigot 1 is retained by a central screw 8. The circle socket 5 carries a depending skirt 10 on which are arranged clamping rings 11, 12 and dies 13, 14 operated by knurled heads 15, 16 and floating links 19 ... 21 the casings 17, 18 of which are secured respectively to the alidade and the triback. Fig. 4 shows an arrangement in which the spigot 1 is secured to the fixed triback or base, the socket 3 to the alidade 2 and the socket 3a to the circle 23, the ball thrust bearing 7a being arranged at the top as shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1082741A GB548512A (en) | 1941-08-25 | 1941-08-25 | Improvements in or relating to theodolites and other angle measuring instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1082741A GB548512A (en) | 1941-08-25 | 1941-08-25 | Improvements in or relating to theodolites and other angle measuring instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB548512A true GB548512A (en) | 1942-10-13 |
Family
ID=9975028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1082741A Expired GB548512A (en) | 1941-08-25 | 1941-08-25 | Improvements in or relating to theodolites and other angle measuring instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB548512A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2647320A (en) * | 1950-09-15 | 1953-08-04 | Keuffel & Esser Co | Theodolite |
| US2667693A (en) * | 1949-03-05 | 1954-02-02 | Keuffel & Esser Co | Surveying instrument |
| US2915826A (en) * | 1959-12-08 | Bruscaglioni |
-
1941
- 1941-08-25 GB GB1082741A patent/GB548512A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2915826A (en) * | 1959-12-08 | Bruscaglioni | ||
| US2667693A (en) * | 1949-03-05 | 1954-02-02 | Keuffel & Esser Co | Surveying instrument |
| US2647320A (en) * | 1950-09-15 | 1953-08-04 | Keuffel & Esser Co | Theodolite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1508928A (en) | Lens-holder assembly | |
| GB548512A (en) | Improvements in or relating to theodolites and other angle measuring instruments | |
| GB556379A (en) | Improvements in or relating to builder's levels | |
| GB771735A (en) | Improvements in level and inclination indicators | |
| GB518148A (en) | Improvements in or relating to mounts for graduated circle plates | |
| GB1098100A (en) | Improvements in or relating to bearing assemblies | |
| FR1084412A (en) | Water-based paint with improved freezing stability | |
| GB1233823A (en) | ||
| GB1394953A (en) | Drawing instruments | |
| GB569560A (en) | An improved sine plate | |
| SU75957A1 (en) | An overview tool for demonstrating the position of a slant line to a plane. | |
| GB675335A (en) | Improvements in or relating to magnetic compasses | |
| GB779610A (en) | Inclinometers | |
| JPS51111356A (en) | Scale for sectional surveying | |
| GB123914A (en) | Improvements in or relating to Stands or Supports for Philosophical, Scientific or like Instruments. | |
| GB544241A (en) | An improved pendulum type level | |
| GB843285A (en) | Improvements in surveying equipment | |
| GB1149167A (en) | Compass | |
| GB548513A (en) | Improvements in or relating to theodolites and other angle measuring instruments | |
| GB677094A (en) | Improvements relating to beam compasses | |
| JPS51126170A (en) | Tripod for surveying equipment | |
| GB913616A (en) | Device for levelling instruments | |
| GB195302A (en) | Improvements in or connected with mining dials, theodolites, and such like | |
| AU478138A (en) | force of -gravity, eg 'for the purpose of prospecting ores, useful minerals and other subterrestrial localities, by accurate measuring of relative -deflections of the plumb line | |
| GB539257A (en) | Improved binnacle top for taking bearings |