GB728140A - Improvements in and relating to louvre ventilators - Google Patents
Improvements in and relating to louvre ventilatorsInfo
- Publication number
- GB728140A GB728140A GB831352A GB831352A GB728140A GB 728140 A GB728140 A GB 728140A GB 831352 A GB831352 A GB 831352A GB 831352 A GB831352 A GB 831352A GB 728140 A GB728140 A GB 728140A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- louvres
- locking
- ventilator
- pivoted
- 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
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B7/08—Louvre doors, windows or grilles
- E06B7/084—Louvre doors, windows or grilles with rotatable lamellae
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Air-Flow Control Members (AREA)
Abstract
728,140. Ventilators. COOPER & CO., Ltd., H. W. March 30, 1953 [April 1, 1952], No. 8313/52. Class 137. A ventilator of the kind comprising one, or more, louvres 5 carried by supports 4 pivoted at 3 to a frame 1, mounted in an opening, e.g. in a wall, is provided with locking means including a lever 9 which is automatically brought into a looking position when the ventilator is shut, the arrangement being such that any force applied directly to the louvres to pivot them open will only tend to urge further the lever into its locking position. The lever 9, pivoted at 10 to a bar 8 linking arms 6 on the support 4, is provided with a cam-shaped nose portion 11 adapted to cooperate with an abutment stud 12 on a side member of the frame 1, a coil spring 13, mounted on the lever 9 adjacent the pivot 10, urging a finger 15 against the stud 12 to rotate the lever 9 anti-clockwise into its locking position. A cord 16 connected to the upper end of the lever 9, when pulled downward, rotates the nose 11 out of locking engagement with the stud 12 until it abuts a pin 17 on the frame 1, whereupon the pin acts as a fulcrum and further rotation of the lever moves the link bar 8 downward to open the louvres. More than one locking arrangement may be fitted to a ventilator, and the louvres may be pivoted about vertical axes in which case spring means are provided to urge the louvres into their closed position. Remote control means may be provided to operate the louvres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB831352A GB728140A (en) | 1952-04-01 | 1952-04-01 | Improvements in and relating to louvre ventilators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB831352A GB728140A (en) | 1952-04-01 | 1952-04-01 | Improvements in and relating to louvre ventilators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB728140A true GB728140A (en) | 1955-04-13 |
Family
ID=9850133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB831352A Expired GB728140A (en) | 1952-04-01 | 1952-04-01 | Improvements in and relating to louvre ventilators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB728140A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2120378A (en) * | 1982-05-08 | 1983-11-30 | Ho Chan Chung | Ventilators for doors |
| GB2208541B (en) * | 1987-08-06 | 1991-10-09 | Mamas Stavrou | A system for controlling the slats of a shutter and a shutter which includes such a system |
-
1952
- 1952-04-01 GB GB831352A patent/GB728140A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2120378A (en) * | 1982-05-08 | 1983-11-30 | Ho Chan Chung | Ventilators for doors |
| GB2208541B (en) * | 1987-08-06 | 1991-10-09 | Mamas Stavrou | A system for controlling the slats of a shutter and a shutter which includes such a system |
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