GB235840A - - Google Patents
Info
- Publication number
- GB235840A GB235840A GB7481/25A GB748125A GB235840A GB 235840 A GB235840 A GB 235840A GB 7481/25 A GB7481/25 A GB 7481/25A GB 748125 A GB748125 A GB 748125A GB 235840 A GB235840 A GB 235840A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- lamp
- cathode
- auxiliary electrode
- bimetallic strip
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/541—Igniting arrangements, e.g. promoting ionisation for starting using a bimetal switch
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
- G01N33/04—Dairy products
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Discharge Lamp (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
235,840. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen). June 21, 1924, [Convention date]. Discharge gap apparatus.-An arc lamp suitable for the production of oscillations comprises enclosed tungsten electrodes e, f, and an auxiliary electrode i containing oxides and situated so as to make contact with only one of the main electrodes when the lamp is cold. To strike the arc, the other main electrode e may be displaced by a bimetallic strip e<2> heated by a resistance g. This movement is limited by a stop h. Another bimetallic strip i<2>, acting more slowly, then removes the auxiliary electrode i from the main cathode f, which has been heated by the arc. The striking of the arc may be assisted by a third bimetallic strip carrying the cathode f. The auxiliary electrode i may be a disc of tungsten and thoria. Its holder i<1> may be attached to the stem of the cathode f or directly to the lamp-foot. The lamp may also be designed for alternating current. Specification 230,777, [Class 39 (i), Electric lamps, Arc &c]., is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP48308A DE839421C (en) | 1949-07-09 | 1949-07-09 | Device for checking the milk when it is accepted at the dairy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB235840A true GB235840A (en) | 1925-09-17 |
Family
ID=7382978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7481/25A Expired GB235840A (en) | 1949-07-09 | 1925-03-19 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1620397A (en) |
| DE (1) | DE839421C (en) |
| FR (1) | FR25963E (en) |
| GB (1) | GB235840A (en) |
-
1922
- 1922-01-23 FR FR25963D patent/FR25963E/en not_active Expired
-
1925
- 1925-03-19 GB GB7481/25A patent/GB235840A/en not_active Expired
- 1925-03-20 US US17062A patent/US1620397A/en not_active Expired - Lifetime
-
1949
- 1949-07-09 DE DEP48308A patent/DE839421C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1620397A (en) | 1927-03-08 |
| FR25963E (en) | 1923-07-18 |
| DE839421C (en) | 1952-05-19 |
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