US579808A - Reflector for focusing cathode-rays - Google Patents
Reflector for focusing cathode-rays Download PDFInfo
- Publication number
- US579808A US579808A US579808DA US579808A US 579808 A US579808 A US 579808A US 579808D A US579808D A US 579808DA US 579808 A US579808 A US 579808A
- Authority
- US
- United States
- Prior art keywords
- rays
- reflector
- cathode
- lead
- focuser
- 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 - Lifetime
Links
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 6
- 229910052718 tin Inorganic materials 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- 239000004744 fabric Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 206010012335 Dependence Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
Images
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
- G21K1/06—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction or reflection, e.g. monochromators
Definitions
- My invention relates to an improved reflector for focusing the X or cathode rays part of this specififrom a Grookes tube directly onto a focal body,
- the image may be projected upon a iluoroscopic screen.
- the cathode-rays of a Crookes tube cannot penetrate a dense substance, such as leador platinum, andadvantage is taken of such fact by locating the tube in a lead-lined box with a front opening, so that the X-rays, instead of being absorbed by the lead, will be reflected onto the focal object in front of a iiuoroscopic screen.
- the power of ⁇ chie focuser will be increased, as the velvet: will absorb other rays in its field, .which would interfere with the X-rays and cause the shadows to be deeper or more pronounced on the fluoroscopic screen.
- the invention consists 1n the novel construction and combination of parts hereinafter fully described and claimed.
- Figure l is a side elevation of a focuser or reflector constructed in accordance with my invention.
- Fig. 2 is a central longitudinal section.
- the reference-numeral 1 designates the reflector, made of a concavoconvex shell of lead or other similar material, or in the form of a concave semisphere.
- This lead on its inner side isprovided with a shell or a lining 2, of tin or other similar material, which in turn is covered with apile fabric 3, such as dark velvet.
- the numeral 4 designates the Crookes tube.
- pins 5 At opposite sides of the reector are pins 5, to which are pivoted legs' or supports 6, h eld in place thereon by screw-knobs 7. These pins form pivots which turn in the legs vto allow the reector to ignates a counterba'lance-weight.
- The'combination with the 'focuser consisting of the concavo-convex'leaden shell, the inner shell of tin, and the velvet lining, of the'Orookes tube located in the concavity be adjusted.
- the numeral 8 des-y of the focuser or reflector; substantially as described.
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Luminescent Compositions (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Description
(No Model.)
R.4 M. RUSSELL. RBFLEGTOR FOR FOGUSING GATHODB RAYS.
No. 579,808.` Patented Mar. 30, 1897.y
It i f" @v1/hmmm Q UNITED STATES PATENT Gerlos.
RALPH MORGAN RUssELL,- or BIRMINGHAM, ALABAMA.
REFLEGTOR FOR FOCUSiNG CATHODE-RAYS.
SPECIFICATION forming` part of Letters Patent No. 579,808, dated March 30, 1897. Application led September 15, 189'6. Serial No. 605,927. (No model.)
hereby declare that the following is a full,
clear, and exact description of theinvention, which will enable others skilled in the art to which it appertains to make and use the same,
reference being had to the accompanying drawings, which form a cation.
My invention relates to an improved reflector for focusing the X or cathode rays part of this specififrom a Grookes tube directly onto a focal body,
whereby the image may be projected upon a iluoroscopic screen.
-As is now known, the cathode-rays of a Crookes tube cannot penetrate a dense substance, such as leador platinum, andadvantage is taken of such fact by locating the tube in a lead-lined box with a front opening, so that the X-rays, instead of being absorbed by the lead, will be reflected onto the focal object in front of a iiuoroscopic screen.
I have found by vexperiment that lead alone will not perfectly reflect the X` or cathode rays,for while it possesses sufficient density it should also have a certain degree of springiness or resiliency to cause perfect reflex action, so that the rays will more thoroughly penetrate the focal object.
I have found by experiment that by making the reflector `of a dense material, such as lead, zinc, platinum, or nickel, concavo convex in form, and lining it with 'a dense springy or resilient substance, such as tin,
steel, or iron, the. X-rays fr om a Crookes tube located in the reiiector are more properly focused on a focal object than when lead or platinum is used alone. p I have also found that by lining the focuser or reflector with a pile fabric of a dark coloi,sucht'as purple,
, dark blue, or black velvet, the power of `chie focuser will be increased, as the velvet: will absorb other rays in its field, .whichwould interfere with the X-rays and cause the shadows to be deeper or more pronounced on the fluoroscopic screen.
The invention consists 1n the novel construction and combination of parts hereinafter fully described and claimed.
In the accompanying drawings, Figure lis a side elevation of a focuser or reflector constructed in accordance with my invention.' Fig. 2 is a central longitudinal section. Fig.
,3 is a front view.
In the said drawings the reference-numeral 1 designates the reflector, made of a concavoconvex shell of lead or other similar material, or in the form of a concave semisphere. This lead on its inner side isprovided with a shell or a lining 2, of tin or other similar material, which in turn is covered with apile fabric 3, such as dark velvet. The numeral 4 designates the Crookes tube. At opposite sides of the reector are pins 5, to which are pivoted legs' or supports 6, h eld in place thereon by screw-knobs 7. These pins form pivots which turn in the legs vto allow the reector to ignates a counterba'lance-weight.
The'operation will be readily understood from the foregoing.
Havingthus fully described my invention 1. As an improved article a focuser for X or cathode rays, consisting of the outer concavo-convex shell `of lead or other inelastic metal, and an inner shell or lining of tin` or other elastic metal,substantially as described.
2. The'combination with the 'focuser consisting of the concavo-convex'leaden shell, the inner shell of tin, and the velvet lining, of the'Orookes tube located in the concavity be adjusted. The numeral 8 des-y of the focuser or reflector; substantially as described.
In testimony that I claim the foregoing'as my own I vhave hereunto affixed my signature in presence of'two witnesses. RALPH MORGAN RUSSELL.
-Witnesses:
R. H. TEACH, T. B. S'roUGn.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US579808A true US579808A (en) | 1897-03-30 |
Family
ID=2648487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US579808D Expired - Lifetime US579808A (en) | Reflector for focusing cathode-rays |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US579808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128716Y1 (en) * | 1975-04-08 | 1976-07-20 |
-
0
- US US579808D patent/US579808A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128716Y1 (en) * | 1975-04-08 | 1976-07-20 |
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