GB314690A - Improved device for safeguarding shop windows and the like - Google Patents
Improved device for safeguarding shop windows and the likeInfo
- Publication number
- GB314690A GB314690A GB2069628A GB2069628A GB314690A GB 314690 A GB314690 A GB 314690A GB 2069628 A GB2069628 A GB 2069628A GB 2069628 A GB2069628 A GB 2069628A GB 314690 A GB314690 A GB 314690A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shutter
- electromagnet
- catch
- rod
- controlled
- 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
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/008—Alarm setting and unsetting, i.e. arming or disarming of the security system
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
314,690. Soper, H. N. July 17, 1928. Window-guards.-A shutter 6 adapted to be interposed to protect the goods in a shop window when the glass is broken, and of the kind which is held open by a catch controlled by an electromagnet, is controlled by current from a battery &c. passing through an easily broken coating, film, or strips of conductor 2 on the window. The catch is released by the interruption of the circuit when the pane is broken. In the arrangement shown in Figs. 3 and 4, the spring-controlled catch 20, pivoted at 21, supports the pin 22 on the shutter 6 and is held by a rod 18. The rod 18 is withdrawn by the spring 14 and lever 12 when the electromagnet 9 is de-energized by breakage of the glass and releases the armature stop 11 from the lever. The conducting strips may consist of silver nitrate, gold-leaf, or an amalgam of tin and mercury &c. The shutter may have a winding handle 7 and a non-return ratchet 8. The shutter is preferably composed of steel slats and may be gravity or spring actuated. The electromagnet may be actuated through a relay. Contacts 26 in an alarm-bell circuit 25 may be released and close automatically by actuation of the rod 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2069628A GB314690A (en) | 1928-07-17 | 1928-07-17 | Improved device for safeguarding shop windows and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2069628A GB314690A (en) | 1928-07-17 | 1928-07-17 | Improved device for safeguarding shop windows and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB314690A true GB314690A (en) | 1929-07-04 |
Family
ID=10150157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2069628A Expired GB314690A (en) | 1928-07-17 | 1928-07-17 | Improved device for safeguarding shop windows and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB314690A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015194938A3 (en) * | 2014-04-23 | 2016-02-18 | VAN ZELM, Jolanda | Shutter assembly |
-
1928
- 1928-07-17 GB GB2069628A patent/GB314690A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015194938A3 (en) * | 2014-04-23 | 2016-02-18 | VAN ZELM, Jolanda | Shutter assembly |
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