GB242826A - Improvements in fine adjustment mechanisms applicable to scientific instruments, surveying instruments and the like - Google Patents
Improvements in fine adjustment mechanisms applicable to scientific instruments, surveying instruments and the likeInfo
- Publication number
- GB242826A GB242826A GB150225A GB150225A GB242826A GB 242826 A GB242826 A GB 242826A GB 150225 A GB150225 A GB 150225A GB 150225 A GB150225 A GB 150225A GB 242826 A GB242826 A GB 242826A
- Authority
- GB
- United Kingdom
- Prior art keywords
- instruments
- cap
- screw
- watts
- fork
- 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
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
- G01C9/26—Details
- G01C9/28—Mountings
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Details Of Measuring And Other Instruments (AREA)
Abstract
242,826. Watts & Son, Ltd., E. R., and Watts, G. W. Jan. 17, 1925. Angle-measuring instruments.-In a different-screw fine-adjustment for scientific instruments &c., the body to be adjusted and one of the members of the differential screw are so shaped that when they are pressed together they engage to prevent relative rotation between them. The Figures show the application of the invention to the spirit level of a surveying instrument, the level 2 being secured in a metal casing 4 having end caps 5, 6. The cap 6 is pivotally mounted in the support 1 between a screw 8 and spring 7. The cap 5 is forked, and each arm of the fork is formed on its under-side with a V-shaped recess 14 which receives one of the cylindrical bars 15 provided on the head 16 of the axially-movable member 17 of the differential screw comprising also an internally and externally threaded sleeve 18 engaging in the support 1. The head 16 is of such diameter that it fits accurately between the forks 5. Springs 10, 11 press the fork into engagement with the bars 15. The mounting of the cap 6 prevents the occurrence of strain due to changes of temperature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB150225A GB242826A (en) | 1925-01-17 | 1925-01-17 | Improvements in fine adjustment mechanisms applicable to scientific instruments, surveying instruments and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB150225A GB242826A (en) | 1925-01-17 | 1925-01-17 | Improvements in fine adjustment mechanisms applicable to scientific instruments, surveying instruments and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB242826A true GB242826A (en) | 1925-11-19 |
Family
ID=9723099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB150225A Expired GB242826A (en) | 1925-01-17 | 1925-01-17 | Improvements in fine adjustment mechanisms applicable to scientific instruments, surveying instruments and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB242826A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2668358A (en) * | 1949-09-16 | 1954-02-09 | Chicago Bridge & Iron Co | Apparatus for gauging |
US3122840A (en) * | 1960-08-08 | 1964-03-03 | Karstens Edward Siegfried | Precision leveling device |
EP0145125A2 (en) * | 1983-08-30 | 1985-06-19 | Sperry Corporation | Tilt sensor null adjusting apparatus |
CN102941508A (en) * | 2012-11-09 | 2013-02-27 | 无锡华联精工机械有限公司 | Detecting and tracking micro-adjusting mechanism of circular seam back chipping and edge milling machine |
CN112762905A (en) * | 2020-12-28 | 2021-05-07 | 杨新倩 | Engineering measuring device and using method thereof |
CN114578506A (en) * | 2022-05-09 | 2022-06-03 | 上海隐冠半导体技术有限公司 | Target mirror adjusting device and method and straightness measuring device |
-
1925
- 1925-01-17 GB GB150225A patent/GB242826A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2668358A (en) * | 1949-09-16 | 1954-02-09 | Chicago Bridge & Iron Co | Apparatus for gauging |
US3122840A (en) * | 1960-08-08 | 1964-03-03 | Karstens Edward Siegfried | Precision leveling device |
EP0145125A2 (en) * | 1983-08-30 | 1985-06-19 | Sperry Corporation | Tilt sensor null adjusting apparatus |
US4567666A (en) * | 1983-08-30 | 1986-02-04 | Sperry Corporation | Tilt sensor null adjusting apparatus |
EP0145125A3 (en) * | 1983-08-30 | 1986-12-10 | Sperry Corporation | Tilt sensor null adjusting apparatus |
CN102941508A (en) * | 2012-11-09 | 2013-02-27 | 无锡华联精工机械有限公司 | Detecting and tracking micro-adjusting mechanism of circular seam back chipping and edge milling machine |
CN102941508B (en) * | 2012-11-09 | 2015-01-28 | 无锡华联精工机械有限公司 | Detecting and tracking micro-adjusting mechanism of circular seam back chipping and edge milling machine |
CN112762905A (en) * | 2020-12-28 | 2021-05-07 | 杨新倩 | Engineering measuring device and using method thereof |
CN114578506A (en) * | 2022-05-09 | 2022-06-03 | 上海隐冠半导体技术有限公司 | Target mirror adjusting device and method and straightness measuring device |
CN114578506B (en) * | 2022-05-09 | 2022-09-20 | 上海隐冠半导体技术有限公司 | Target mirror adjusting device and method and straightness measuring device |
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