GB706378A - Improvements in x-ray apparatus - Google Patents
Improvements in x-ray apparatusInfo
- Publication number
- GB706378A GB706378A GB1204852A GB1204852A GB706378A GB 706378 A GB706378 A GB 706378A GB 1204852 A GB1204852 A GB 1204852A GB 1204852 A GB1204852 A GB 1204852A GB 706378 A GB706378 A GB 706378A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plates
- worm
- pinion
- ray
- shutter
- 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
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
- G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Gear Transmission (AREA)
Abstract
706,378. X-ray apparatus. ELECTRONIC & X-RAY APPLICATIONS, Ltd., TUNNICLIFFE. E. A. J., and WAY, R. F. May 12, 1952, No. 12048/52. Class 98(1) In a shutter for X-ray apparatus, the movable plates are coupled to a continuously operable driving component through a resilent slipping drive device, the resilient component of which is loaded by drive reaction set up by movement of the plates to their closed position or their arrival at that closed position and which acts to hold the plates in that position when drive ceases. As shown in Fig. 1, shutter plates 1, la, are slidable'in guides 3, 4 over an X-ray transparent window 24 in the bottom of a tray 23, and are connected to pivoted levers 7, 8 so as to move equally in opposite directions. Lever 8 is bolted to a pinion 10. An electric motor 17, Fig. 4, drives a shaft 15 through gearing 16. A worm 14 rotatably mounted on shaft 15 is held between friction discs 18, 19 urged towards each other by springs 20, 21. When the shutter plates are being closed, worm 14 drives a pinion 13 fast with a pinion 12 driving pinion 10. When the plates abut, worm 14 moves along shaft 15, compressing one of the springs, until the friction discs 18, 19 slip. When the motor is switched off the spring action on worm 14 presses the plates together. Similar action takes place when the plates have been separated as far as they will go by reversing motor 17. A second similar pair of plates and driving means is mounted in a tray similar to 23, and the trays are mounted with their open ends together and with the directions of movement of the two pairs of plates at right-angles. The driving motors are operated by separate switches. Alternatively, both pairs of plates may be driven by a single motor. The shutter assembly may be mounted, together with an X-ray tube and a fluorescent screen, on a movable carriage in an X-ray apparatus.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1204852A GB706378A (en) | 1952-05-12 | 1952-05-12 | Improvements in x-ray apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1204852A GB706378A (en) | 1952-05-12 | 1952-05-12 | Improvements in x-ray apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB706378A true GB706378A (en) | 1954-03-31 |
Family
ID=9997490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1204852A Expired GB706378A (en) | 1952-05-12 | 1952-05-12 | Improvements in x-ray apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB706378A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2911537A (en) * | 1958-03-24 | 1959-11-03 | F R Machine Works Inc | X-ray cone assembly |
US3048700A (en) * | 1959-09-24 | 1962-08-07 | Westinghouse Electric Corp | X-ray shutter apparatus |
US3287561A (en) * | 1964-06-11 | 1966-11-22 | Westinghouse Electric Corp | X-ray shutter apparatus with rotary mounting means and specific means for rotating the shutter apparatus thereon |
-
1952
- 1952-05-12 GB GB1204852A patent/GB706378A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2911537A (en) * | 1958-03-24 | 1959-11-03 | F R Machine Works Inc | X-ray cone assembly |
US3048700A (en) * | 1959-09-24 | 1962-08-07 | Westinghouse Electric Corp | X-ray shutter apparatus |
US3287561A (en) * | 1964-06-11 | 1966-11-22 | Westinghouse Electric Corp | X-ray shutter apparatus with rotary mounting means and specific means for rotating the shutter apparatus thereon |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES301776A1 (en) | Improvements in appliances propelled by force drive. (Machine-translation by Google Translate, not legally binding) | |
GB706378A (en) | Improvements in x-ray apparatus | |
CA923336A (en) | Friction drive mechanism | |
FR2422085A1 (en) | Large valve drive transmission mechanism - has epicyclic gear train with spring loaded worm on splines meshing with sun-wheel actuating detector | |
CA979881A (en) | Drive mechanism for manually operated sheet winches | |
GB970427A (en) | A driving mechanism for toys | |
GB1301785A (en) | ||
SU125513A1 (en) | Drive to manual winches | |
US1916383A (en) | Stereoscopic plate shifter | |
GB1224232A (en) | Mechanism for effecting relative movement between the mechanism and a member | |
US1697333A (en) | Holdback | |
GB685451A (en) | Improvements in apparatus for producing radiographs | |
CA919944A (en) | Friction drive mechanism | |
ES363745A1 (en) | Belt shifting device | |
US1806617A (en) | Synchronized photographic | |
SU406527A1 (en) | DEVICE FOR LECTION DEMONSTRATION | |
GB706082A (en) | Improvements in or relating to x-ray machine and diaphragm assembly therefor | |
GB897234A (en) | Mechanism for adjusting zoom lens assembly | |
US1819819A (en) | Mechanically synchronized shaft | |
GB1106636A (en) | Mechanical drive arrangement | |
GB599450A (en) | Improvements in or relating to mechanical actuator mechanism | |
ES204879A3 (en) | Improvements in clutch mechanisms (Machine-translation by Google Translate, not legally binding) | |
ES428628A1 (en) | Lift door operator apparatus | |
ES296030A1 (en) | Time switch (Machine-translation by Google Translate, not legally binding) | |
GB608756A (en) | Improvements in control mechanisms for wing flaps and hyper-lifting devices for aircraft |