US1644601A - Vacuum discharge tube - Google Patents
Vacuum discharge tube Download PDFInfo
- Publication number
- US1644601A US1644601A US170680A US17068027A US1644601A US 1644601 A US1644601 A US 1644601A US 170680 A US170680 A US 170680A US 17068027 A US17068027 A US 17068027A US 1644601 A US1644601 A US 1644601A
- Authority
- US
- United States
- Prior art keywords
- tube
- wall
- vacuum discharge
- plate
- metal
- 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
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000010445 mica Substances 0.000 description 4
- 229910052618 mica group Inorganic materials 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000021302 gastroesophageal reflux disease Diseases 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/186—Getter supports
Definitions
- ()ur invention relates to improvements, in vacuum discharge tubes such for example as radio tubes, and the method of manufacturing the same. More particularly our invention relates to tubes of the type the wall of which is internally coated with metal.
- One of the objects of the improvements is toprovide a tube and a method of manufacturing the same, in which a part of the Wall is transparent while the main part thereof is coated with metal, so that the inner part of the tube can be inspected through the said transparent portion of the wall.
- Fig. 1 is a sectional elevation showing our improved tube
- Fig. 2 is an elevation of the tube.
- our improved tube consists of a glowing cathode 3, a grid 4 and a tubular anode 5, the said parts being connected with suitable terminals as is known in radio tubes.
- the portion 6 of the wall of the tube is provided internally with acoating of a suitable metal, which portion is opaque, while the portion 7 of the tube is transparent, so that the inner parts of the tube can be inspected throu h the portion 7.
- the transparent portion may be rovided at any suitable palt of the wall, t ough ordinarily we prfifer to provide the same at the top of the tu e.
- the method of our invention for providing the wall with a transparent portion, is as follows. We place a small thin plate 8 of a suitable material such as mica on the portion 7 of the wall while applying the metal coating 6. Therefore the said plate protects the part 7 from the metal being applied to the wall. It will be understood that when applying the'metal coating to the wall,
- the tube is turned upside down.
- the plate drops from the portion 7, and it is left at a part of the tube where it does not interfere with the operation.
- Fig. 1 we have shown the plate at the left hand bottom part of the tube.
- the said protective plate is adaptedto absorb a portion of the gas, such as hydrogen, used for filling the tube, so that after partial evacuation of the tube andconsumption of the hydrogen in the course of the operation thereof, the said hydrogen is regenerated from the mica plate.
- the gas such as hydrogen
- the herein described method of coatin vacuum discharge tubes with metal, whic consists in loosely placing a protective plate adapted to absorb gas on a portion of the wall of the tube, precipitating metal contained within the tube, and removing said plate from the Wall of the tube.
- the herein described method of coating vacuum discharge tubes with metal which consists in, loosely placing a protective plate of mica on a portion of the wall of the tube, precipitating metal contained within 1 the tube. and removing said plate from the wall of the tube.
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Description
' 1 644 601 1927' AP. HANS-GERD NICKEL ET AL VACUUM PISCHARGE TUBE Filed Feb 24. 1927 I 3 Fi .1.
l l l l M2 Alla in 42 Patented Oct. 4, 1927.
UNITED STATES PATENT OFFICE.
ALBERT PAUL HANS GERD NICKEL, OF CHARLOTTENBURG, AND JOHANNES JOACHIM SPANNER, OF BERLIN, GERMANY.
VACUUM DISCHARGE TUBE.
Application filed February 24, 1927, Serial No. 170,680, and in Germany September 9,1924.
()ur invention relates to improvements, in vacuum discharge tubes such for example as radio tubes, and the method of manufacturing the same. More particularly our invention relates to tubes of the type the wall of which is internally coated with metal. One of the objects of the improvements is toprovide a tube and a method of manufacturing the same, in which a part of the Wall is transparent while the main part thereof is coated with metal, so that the inner part of the tube can be inspected through the said transparent portion of the wall.
The invention is shown in the accompanying drawing, in which Fig. 1, is a sectional elevation showing our improved tube,
Fig. 2, is an elevation of the tube. I
As shown in Fig. 1 our improved tube consists of a glowing cathode 3, a grid 4 and a tubular anode 5, the said parts being connected with suitable terminals as is known in radio tubes. The portion 6 of the wall of the tube is provided internally with acoating of a suitable metal, which portion is opaque, while the portion 7 of the tube is transparent, so that the inner parts of the tube can be inspected throu h the portion 7. We wish it to be understoo that the transparent portion may be rovided at any suitable palt of the wall, t ough ordinarily we prfifer to provide the same at the top of the tu e.
The method of our invention, for providing the wall with a transparent portion, is as follows. We place a small thin plate 8 of a suitable material such as mica on the portion 7 of the wall while applying the metal coating 6. Therefore the said plate protects the part 7 from the metal being applied to the wall. It will be understood that when applying the'metal coating to the wall,
the tube is turned upside down. Thus when turning the tube after coating the wall thereof. the plate drops from the portion 7, and it is left at a part of the tube where it does not interfere with the operation. In Fig. 1 we have shown the plate at the left hand bottom part of the tube.
By providing a plate of a suitable material. such for example as mica, graphite, etc., the said protective plate is adaptedto absorb a portion of the gas, such as hydrogen, used for filling the tube, so that after partial evacuation of the tube andconsumption of the hydrogen in the course of the operation thereof, the said hydrogen is regenerated from the mica plate.
We claim:
1. The herein described method of coating vacuum discharge tubes with metal, which consists in loosely placing a. protective plate on a portion of the wall of the tube, precipitating metal contained within the tube, and reinoving said plate from the wallet the tu e.
2. The herein described method of coatin vacuum discharge tubes with metal, whic consists in loosely placing a protective plate adapted to absorb gas on a portion of the wall of the tube, precipitating metal contained within the tube, and removing said plate from the Wall of the tube.
3. The herein described method of coating vacuum discharge tubes with metal, which consists in, loosely placing a protective plate of mica on a portion of the wall of the tube, precipitating metal contained within 1 the tube. and removing said plate from the wall of the tube.
In testimony whereof we hereunto afiix our signatures.
ALBERT PAUL IIANSGERD NICKEL JOIIANNE S JOACHIM SPANNER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1644601X | 1924-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1644601A true US1644601A (en) | 1927-10-04 |
Family
ID=7738055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US170680A Expired - Lifetime US1644601A (en) | 1924-09-09 | 1927-02-24 | Vacuum discharge tube |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1644601A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3069580A (en) * | 1953-10-28 | 1962-12-18 | Sylvania Electric Prod | Fluorescent lamp |
-
1927
- 1927-02-24 US US170680A patent/US1644601A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3069580A (en) * | 1953-10-28 | 1962-12-18 | Sylvania Electric Prod | Fluorescent lamp |
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