GB191227002A - Improvements in and relating to Theft Alarm Boxes and the like. - Google Patents
Improvements in and relating to Theft Alarm Boxes and the like.Info
- Publication number
- GB191227002A GB191227002A GB191227002DA GB191227002A GB 191227002 A GB191227002 A GB 191227002A GB 191227002D A GB191227002D A GB 191227002DA GB 191227002 A GB191227002 A GB 191227002A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- spring
- box
- pin
- contact
- 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
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
- G08B13/149—Mechanical actuation by lifting or attempted removal of hand-portable articles with electric, magnetic, capacitive switch actuation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
27,002. Brydone, R. M. Nov. 23. Theft alarms. - A n alarm circuit, adapted to be closed by a contact spring k, remains open so long as a pin t projecting through the bottom a of a cash-box or the like is resting on the surface of the table or other support. When, however, the box is lifted, the controlling-spring o carrying the dome r guided by the cone s bends downwards and closes the contact k by means of the pin q. The spring k while the circuit is open is frictionally gripped at its edge by an arm of the spring-controlled lever u which is pivoted on a bracket v. When the spring k is depressed, the short arm of the lever it retains it in that position. The spring o and lever u can be reset by means of the lever x, the handle of which projects through a slot into an upper compartment of the box. The lever x may be adapted to be turned from outside by means of a key shown in Figs. 6 and 7, and provided with two grooves 3 which register with a projection in the keyhole, so that the key can only be withdrawn in the extreme positions of the lever x. In modifications, the pin t may rest on a false bottom supported by studs which project through the true bottom a of the box; or the bottom a may in this case consist of resilient fabric.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191227002T | 1912-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191227002A true GB191227002A (en) | 1913-05-01 |
Family
ID=32575184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191227002D Expired GB191227002A (en) | 1912-11-23 | 1912-11-23 | Improvements in and relating to Theft Alarm Boxes and the like. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191227002A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696668A (en) * | 2019-10-17 | 2020-01-17 | 重庆国翰能源发展有限公司 | Electricity larceny prevention and leakage system based on charging pile |
| CN113030538A (en) * | 2021-03-09 | 2021-06-25 | 陆美玲 | Ammeter case that ammeter was difficult for stealing |
-
1912
- 1912-11-23 GB GB191227002D patent/GB191227002A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696668A (en) * | 2019-10-17 | 2020-01-17 | 重庆国翰能源发展有限公司 | Electricity larceny prevention and leakage system based on charging pile |
| CN110696668B (en) * | 2019-10-17 | 2023-02-28 | 重庆国翰能源发展有限公司 | Electricity larceny prevention and leakage system based on charging pile |
| CN113030538A (en) * | 2021-03-09 | 2021-06-25 | 陆美玲 | Ammeter case that ammeter was difficult for stealing |
| CN113030538B (en) * | 2021-03-09 | 2022-09-27 | 北京合众科创科技有限公司 | Ammeter case that ammeter was difficult for stealing |
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