GB1189801A - Improvements in Fire Warning Cables. - Google Patents
Improvements in Fire Warning Cables.Info
- Publication number
- GB1189801A GB1189801A GB21769A GB21769A GB1189801A GB 1189801 A GB1189801 A GB 1189801A GB 21769 A GB21769 A GB 21769A GB 21769 A GB21769 A GB 21769A GB 1189801 A GB1189801 A GB 1189801A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slug
- gap
- cables
- clip
- pad
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/767—Normally open
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Fire Alarms (AREA)
Abstract
1,189,801. Thermal switches. STANDARD TELEPHONES & CABLES Ltd. 2 Jan., 1969, No. 217/69. Addition to 1,140,726. Heading H1N. An electric cable for a fire-warning system comprises a pair of parallel conductors 2, Fig. 2, which are bridged by a slug 4 of low-melting point metal which enters through a gap 3 in the cable cover on melting. The gap 3 is disposed at one end of the slug 4 to prevent inadvertent operation and is surrounded by a metal clip 7 crimped over a resilient pad 6. In a modification the clip 7 and pad 6 are replaced by a resilient sleeve.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21769A GB1189801A (en) | 1969-01-02 | 1969-01-02 | Improvements in Fire Warning Cables. |
DE19691964879 DE1964879A1 (en) | 1969-01-02 | 1969-12-24 | Fire alarm cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21769A GB1189801A (en) | 1969-01-02 | 1969-01-02 | Improvements in Fire Warning Cables. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1189801A true GB1189801A (en) | 1970-04-29 |
Family
ID=9700483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21769A Expired GB1189801A (en) | 1969-01-02 | 1969-01-02 | Improvements in Fire Warning Cables. |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1964879A1 (en) |
GB (1) | GB1189801A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113782257A (en) * | 2021-09-08 | 2021-12-10 | 中国科学院理化技术研究所 | Fire-proof cable |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3714537A1 (en) * | 1987-04-30 | 1988-11-17 | Sell Rudolf | CONNECTING ELEMENT FOR GAS CONCRETE COMPONENTS |
DE19935439A1 (en) * | 1999-07-28 | 2001-02-15 | Siemens Ag | Sensor cable |
-
1969
- 1969-01-02 GB GB21769A patent/GB1189801A/en not_active Expired
- 1969-12-24 DE DE19691964879 patent/DE1964879A1/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113782257A (en) * | 2021-09-08 | 2021-12-10 | 中国科学院理化技术研究所 | Fire-proof cable |
CN113782257B (en) * | 2021-09-08 | 2024-04-05 | 中国科学院理化技术研究所 | Fire-proof cable |
Also Published As
Publication number | Publication date |
---|---|
DE1964879A1 (en) | 1970-09-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) |