GB665728A - Improvements in or relating to x-ray apparatus - Google Patents
Improvements in or relating to x-ray apparatusInfo
- Publication number
- GB665728A GB665728A GB8285/51A GB828551A GB665728A GB 665728 A GB665728 A GB 665728A GB 8285/51 A GB8285/51 A GB 8285/51A GB 828551 A GB828551 A GB 828551A GB 665728 A GB665728 A GB 665728A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- screen
- plate
- rod
- knob
- 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
- 230000006835 compression Effects 0.000 abstract 3
- 238000007906 compression Methods 0.000 abstract 3
- 238000002594 fluoroscopy Methods 0.000 abstract 3
- 238000002601 radiography Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
- A61B6/447—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit or the detector unit being mounted to counterpoise or springs
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
665,728. X - ray apparatus. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. May 2, 1949 [May 29, 1948], No. 8285/51. Divided out of 665,692. Class 98 (i). The apparatus comprises a table 21, Fig. 1, pivoted on a base 31 and swingable through 180 degrees so as to lie horizontally while exposing one side or the other or to stand in a vertical plane, support means on the table for an X-ray tube 23 and an associated fluorescent screen 69, a screen counterbalancing assembly mounted on the support means and comprising a hollow column 72, a compression spring housed in the column, slotted members confining and adjusting the compression of the spring, a rod movable in the spring and carrying transverse pins, one of the spring-confining members carrying a guide for one of the pins, an arm carrying the fluorescent screen and pivoted to the column intermediate its ends, a collar rotatable on the rod, a knob and pointer assembly secured to the end of the rod beyond the collar, means pivotally connecting one end of the screen-carrying arm to the collar, the knob serving to turn the rod to adjust it with respect to the slotted spring-confining members, whereby the screen may be released from the spring and allowed to move freely in vertical fluoroscopy, balanced by the spring for horizontal fluoroscopy, or locked to prevent it dropping on the floor when the apparatus is used for horizontal radiography. The support means may consist of a carriage 26 movable on longitudinal tracks attached to the table, and a second carriage movable transversely in tracks on the carriage 26 and supporting column 72 and X-ray tube 23. The tube 72, Fig. 7, contains a spring 73 trapped between plates 74, 75. Plate 74 is fixed on threaded rods (not shown) fixed to an end-plate 79, by which the compression of spring 73 can be adjusted, while plate 75 rests on a spacer tube 76 fixed within the lower end of tube 72. An arm 87 supporting the screen is pivoted at 102 to lugs on tube 72 and has a forked end pivoted to a block 103 carrying a dial 92. A rod 86, with a knob 89 and pointer 88, passes freely through block 103, a slot 100 in the closed top of tube 72, and slots in plates 74, 75. A spring 104 presses block 103 against knob 89. Rod 86 has short cross-bars 93, 94 which pass freely through the slabs in plates 74, 75 in certain angular positions of the rod. When the apparatus is used for fluoroscopy with the table horizontal and the screen uppermost (as shown in Fig. 7) rod 86 is turned by knob 89 to a position indicated by pointer 88 such that bar 93 passes freely through a slot in plate 74, but bar 94 lifts plate 75 to compress spring 73 when the screen is moved downwards, thus counterbalancing the screen. Before turning the table to its second horizontal position, the screen is moved downwardly until bar 93 is above plate 74. Knob 89 is then turned to a second position, wherein neither bar can pass through a plate. When the table is turned to its second horizontal position for radiography, the screen is thus held in a fixed position clear of the floor. When the table is to be used in a vertical position, knob 89 is turned to a third position in which bar 93 passes through a second slot, at an angle to the first, in plate 74, and bar 94 passes through a slot in plate 75 to slide freely in a guide 98. In this position spring 73 has no effect. Specifications 665,692 and 665,729 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US665728XA | 1948-05-29 | 1948-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB665728A true GB665728A (en) | 1952-01-30 |
Family
ID=22070353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8285/51A Expired GB665728A (en) | 1948-05-29 | 1949-05-02 | Improvements in or relating to x-ray apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB665728A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5211704A (en) * | 1991-07-15 | 1993-05-18 | Manufacturing Technology And Conversion International, Inc. | Process and apparatus for heating fluids employing a pulse combustor |
US5255634A (en) * | 1991-04-22 | 1993-10-26 | Manufacturing And Technology Conversion International, Inc. | Pulsed atmospheric fluidized bed combustor apparatus |
US5909654A (en) * | 1995-03-17 | 1999-06-01 | Hesboel; Rolf | Method for the volume reduction and processing of nuclear waste |
-
1949
- 1949-05-02 GB GB8285/51A patent/GB665728A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5255634A (en) * | 1991-04-22 | 1993-10-26 | Manufacturing And Technology Conversion International, Inc. | Pulsed atmospheric fluidized bed combustor apparatus |
US5211704A (en) * | 1991-07-15 | 1993-05-18 | Manufacturing Technology And Conversion International, Inc. | Process and apparatus for heating fluids employing a pulse combustor |
US5909654A (en) * | 1995-03-17 | 1999-06-01 | Hesboel; Rolf | Method for the volume reduction and processing of nuclear waste |
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