GB431997A - Improved means for conducting current to the carbons of projection arc lamps - Google Patents
Improved means for conducting current to the carbons of projection arc lampsInfo
- Publication number
- GB431997A GB431997A GB35875/34A GB3587534A GB431997A GB 431997 A GB431997 A GB 431997A GB 35875/34 A GB35875/34 A GB 35875/34A GB 3587534 A GB3587534 A GB 3587534A GB 431997 A GB431997 A GB 431997A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon
- lamp
- plunger
- adjustable
- carbons
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B31/00—Electric arc lamps
- H05B31/02—Details
- H05B31/18—Mountings for electrodes; Electrode feeding devices
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
431,997. Arc lamps. ZEISS IKON AKT.-GES., 72, Schandauerstrasse, Dresden, Germany. March 1, 1934, No. 35875. Convention date, March 15, 1933. Divided out of an application under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 17, 1934. [Class 39 (i)] In a projection arc lamp, the current conducting means for the positive carbon comprise a plunger adapted to press the carbon against an abutment which is adjustable so that carbons of different diameters may be mounted with their axes in the optical axis of the lamp. The abutment may be a vertically adjustable prismatic holder 5 against which the carbon is pressed by a plunger 4 actuated by a weighted lever 7. The weight 8 is adjustable on the lever arm to enable the pressure of the plunger to be varied. The holder is supported from the base of the lamp through an insulating layer 12. The Specification as open to inspection under Sect. 91 comprises also a support rigidly connected to and insulated from the base of the lamp so as to hold the carbon in a fixed position and the use of gravity controlled clamping means for the carbon. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE431997X | 1933-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB431997A true GB431997A (en) | 1935-07-18 |
Family
ID=6490479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35875/34A Expired GB431997A (en) | 1933-03-15 | 1934-03-01 | Improved means for conducting current to the carbons of projection arc lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB431997A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1111287B (en) * | 1958-09-23 | 1961-07-20 | Philips Nv | Coal holder with guide for film projector |
-
1934
- 1934-03-01 GB GB35875/34A patent/GB431997A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1111287B (en) * | 1958-09-23 | 1961-07-20 | Philips Nv | Coal holder with guide for film projector |
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