GB398923A - Improvements in or relating to fireproof shutters - Google Patents
Improvements in or relating to fireproof shuttersInfo
- Publication number
- GB398923A GB398923A GB954232A GB954232A GB398923A GB 398923 A GB398923 A GB 398923A GB 954232 A GB954232 A GB 954232A GB 954232 A GB954232 A GB 954232A GB 398923 A GB398923 A GB 398923A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- shutter
- bar
- shutters
- rail
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/12—Hinged dampers
- A62C2/14—Hinged dampers with two or more blades
- A62C2/16—Hinged dampers with two or more blades multi-vane roll or fold-up type
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
398,923. Releasing fireproof shutters. POLLARD & CO., Ltd., E. and POLLARD, H. E., 159, St. John Street, London. April 2, 1932, Nos. 9542 and 34041. [Class 47 (ii).] A fireproof roller-shutter of the spring- counterbalanced type is closed by a weight when the latter is released by the fusion of a fusible link, the weight being dislodged automatically during the final closing movement of the shutter. The weight C normally is supported by a bell-crank lever D retained by a cord E and fusible link E<1>. When the link melts, the weight falls and is guided by a guideway G and pin F on to the bottom rail A of the shutter, where its weight closes the shutters. When the latter is nearly closed, a surface H on the guideway G engages a projection C<2> on the weight to remove the latter from the shutter. In a modification, the weight is in the form of a bar pivoted at one end and supported at the other by the fusible link. When the latter melts, the bar swings down and engages the lower rail of the shutter. In modifications of this latter arrangement, suitable for long, narrow shutters, the bar is in two hinged parts. When the bar is released, one part first engages the rail of the shutter, and, subsequently, the second part turns about a fulcrum to engage the rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB954232A GB398923A (en) | 1932-04-02 | 1932-04-02 | Improvements in or relating to fireproof shutters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB954232A GB398923A (en) | 1932-04-02 | 1932-04-02 | Improvements in or relating to fireproof shutters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB398923A true GB398923A (en) | 1933-09-28 |
Family
ID=9874000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB954232A Expired GB398923A (en) | 1932-04-02 | 1932-04-02 | Improvements in or relating to fireproof shutters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB398923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1260748B (en) * | 1953-12-11 | 1968-02-08 | Carl Kauffmann | Arrangement of a roller shutter, which can be closed automatically in the event of fire, as a cover for a means of transport set up for continuous movement, e.g. B. an escalator |
| GB2299363A (en) * | 1995-03-28 | 1996-10-02 | Northern Doors | Roller shutter deployment |
-
1932
- 1932-04-02 GB GB954232A patent/GB398923A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1260748B (en) * | 1953-12-11 | 1968-02-08 | Carl Kauffmann | Arrangement of a roller shutter, which can be closed automatically in the event of fire, as a cover for a means of transport set up for continuous movement, e.g. B. an escalator |
| GB2299363A (en) * | 1995-03-28 | 1996-10-02 | Northern Doors | Roller shutter deployment |
| GB2299363B (en) * | 1995-03-28 | 1997-02-26 | Northern Doors | Roller shutter |
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