GB548511A - Improvements in or relating to theodolites or other angle measuring instruments - Google Patents
Improvements in or relating to theodolites or other angle measuring instrumentsInfo
- Publication number
- GB548511A GB548511A GB1082641A GB1082641A GB548511A GB 548511 A GB548511 A GB 548511A GB 1082641 A GB1082641 A GB 1082641A GB 1082641 A GB1082641 A GB 1082641A GB 548511 A GB548511 A GB 548511A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screws
- boss
- plate
- circle
- circle plate
- 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
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/02—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Pivots And Pivotal Connections (AREA)
- Toys (AREA)
- Milling, Drilling, And Turning Of Wood (AREA)
Abstract
548,511. Theodolites and the like. COOKE, TROUGHTON & SIMMS, Ltd., TAYLOR, E. W., and HARRISON, J. W. Aug. 25, 1941, No. 10826. [Class 97 (ii)] In theodolites and the like the vertical and horizontal circle plates are provided with means for moving the plate in its own plane so as to adjust its centring without removal of the circle plate from its mount. Figs. 3 and 4 show a vertical circle 2 having a boss 11 adapted to fit into the machine end of the transit axis 1 with slight freedom. The boss 11 is provided with a number of saw cuts 12 to provide segmented springy walls to the boss which boss is also provided with screws 15 the points of which are adapted to bear on steel balls 17 arranged in recesses 16 closed by a plate 14 secured in place by screws 13. When adjusting the securing screws 3 are slackened and one or more of the screws 15 are tightened causing the ball or balls to spring out the weakened wall or walls of the boss and so move the circle plate in its own plane in the desired direction, it being understood that the screws 15 at the opposite end of the diameter from those being operated are slackened. The retaining screws 3 are then screwed home. Fig. 7 shows another method in which manipulation of capstan headed screws 22 perform the adjusting movement by bearing on the machined interior face of the transit axis. Fig. 14 shows a method applied to a horizontal circle plate 30. The alidade is rotatably mounted in a socket 27 carried by the fixed base and a sleeve 29 is rotatable around the socket 27. The circle plate 30 is secured to the sleeve 29 by screws 9 which when slackened permit limited movement of the circle plate 30 in its own plane. The required movement is obtained by the manipulation of one or more screws 32 carried by the circle plate the conical ends of which screws bear upon the side of conical recesses 33 in the sleeve 29 to exert a sideways pressure. Specification 518,148 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1082641A GB548511A (en) | 1941-08-25 | 1941-08-25 | Improvements in or relating to theodolites or other angle measuring instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1082641A GB548511A (en) | 1941-08-25 | 1941-08-25 | Improvements in or relating to theodolites or other angle measuring instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB548511A true GB548511A (en) | 1942-10-13 |
Family
ID=9975006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1082641A Expired GB548511A (en) | 1941-08-25 | 1941-08-25 | Improvements in or relating to theodolites or other angle measuring instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB548511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2818652A (en) * | 1953-06-23 | 1958-01-07 | Keuffel & Esser Co | Transit |
-
1941
- 1941-08-25 GB GB1082641A patent/GB548511A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2818652A (en) * | 1953-06-23 | 1958-01-07 | Keuffel & Esser Co | Transit |
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