GB847542A - Improvements in or relating to studio lights - Google Patents
Improvements in or relating to studio lightsInfo
- Publication number
- GB847542A GB847542A GB4042757A GB4042757A GB847542A GB 847542 A GB847542 A GB 847542A GB 4042757 A GB4042757 A GB 4042757A GB 4042757 A GB4042757 A GB 4042757A GB 847542 A GB847542 A GB 847542A
- Authority
- GB
- United Kingdom
- Prior art keywords
- doors
- mounting ring
- ring
- attached
- lens
- 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
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
- F21V11/18—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed movable, e.g. flaps, slides
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Shutters For Cameras (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
847,542. Lantern shutters. GENERAL ELECTRIC CO. Ltd. Nov. 14, 1958 [Dec. 11, 1957], No. 40427/57. Class 75(4). A studio light in the form of a lantern from which light is emitted through a lens has at least one pair of doors foldable over the front of the lens, the doors being carried on a mounting ring which is rotatable about its axis by rack and pinion means. operable from a remote point. The doors 7 are attached bv friction-lockable hinges 8 to the mounting ring 9 which fits into the semicircular members 5 and 6 attached, the former by spot welding and the latter by screws, to the flange 3 on the lens ring 1. Rotation of the mounting ring is effected by rotation of the pinion wheel 13 attached to the spindle 11 which is carried by a bracket 10 fixed to the half-ring 5. The pinion wheel engages either with slots cut into the mounting ring 9 or, as shown, with a rack 14 formed of helically overwound steel cable and attached to the mounting ring. Remote operation is achieved by the use of a pole whose end has a socket engageable with the head 12 of the spindle. The doors, of which the ring may carry an additional pair arranged to be foldable about axes perpendicular to those of the doors shown, may also be opened and closed by the use of a pole, for which purpose the doors and the pole may each carry means engageable with the other. Specification 847,531 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4042757A GB847542A (en) | 1957-12-31 | 1957-12-31 | Improvements in or relating to studio lights |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4042757A GB847542A (en) | 1957-12-31 | 1957-12-31 | Improvements in or relating to studio lights |
Publications (1)
Publication Number | Publication Date |
---|---|
GB847542A true GB847542A (en) | 1960-09-07 |
Family
ID=10414861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4042757A Expired GB847542A (en) | 1957-12-31 | 1957-12-31 | Improvements in or relating to studio lights |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB847542A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2431655A1 (en) * | 1978-07-10 | 1980-02-15 | Arai Akira | VARIABLE MASKING DEVICE FOR LIGHTING PROJECTORS |
DE29705129U1 (en) | 1997-03-20 | 1997-08-07 | Lichttechnik-Vertriebs GmbH Hagenbach & Grill, 80805 München | Lighting device |
-
1957
- 1957-12-31 GB GB4042757A patent/GB847542A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2431655A1 (en) * | 1978-07-10 | 1980-02-15 | Arai Akira | VARIABLE MASKING DEVICE FOR LIGHTING PROJECTORS |
DE29705129U1 (en) | 1997-03-20 | 1997-08-07 | Lichttechnik-Vertriebs GmbH Hagenbach & Grill, 80805 München | Lighting device |
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