GB639562A - Improvements in and relating to lamp holders for circular tubular electric lamps - Google Patents
Improvements in and relating to lamp holders for circular tubular electric lampsInfo
- Publication number
- GB639562A GB639562A GB9893/47A GB989347A GB639562A GB 639562 A GB639562 A GB 639562A GB 9893/47 A GB9893/47 A GB 9893/47A GB 989347 A GB989347 A GB 989347A GB 639562 A GB639562 A GB 639562A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- head
- relating
- lamp holders
- electric lamps
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
- F21S6/002—Table lamps, e.g. for ambient lighting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/05—Two-pole devices
- H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
- H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
- F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Clamps And Clips (AREA)
Abstract
639,562. Tubular lamp fittings. BRITISH THOMSON-HOUSTON CO., Ltd. April 14, 1947, No. 9893. Convention date, April 15, 1946. [Class 75 (iv)] [Also in Group XXXVI] A holder base 4 for a circular lamp is provided with arms 3 which carry a socket 2 (see Group XXXVI) and supporting clamps to support the lamp. Each clamp comprises a collar 21 secured on its arm by a set screw 23 and provided with a guide bracket 27 in which the clamp head 24 is pivoted. A spring 29 engaging the bracket is rereceived in a recess 28 in the head to force its curved surface 26 against the lamp. The head is also provided with stops 32 which engage the collar 21 and prevent it moving too far. Specifications 618,128 and 620,289 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US639562XA | 1946-04-15 | 1946-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB639562A true GB639562A (en) | 1950-06-28 |
Family
ID=22052582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9893/47A Expired GB639562A (en) | 1946-04-15 | 1947-04-14 | Improvements in and relating to lamp holders for circular tubular electric lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB639562A (en) |
-
1947
- 1947-04-14 GB GB9893/47A patent/GB639562A/en not_active Expired
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