GB2210718A - High security alarm bell box - Google Patents
High security alarm bell box Download PDFInfo
- Publication number
- GB2210718A GB2210718A GB8723694A GB8723694A GB2210718A GB 2210718 A GB2210718 A GB 2210718A GB 8723694 A GB8723694 A GB 8723694A GB 8723694 A GB8723694 A GB 8723694A GB 2210718 A GB2210718 A GB 2210718A
- Authority
- GB
- United Kingdom
- Prior art keywords
- box
- attempt
- alarm
- trigger
- drill
- 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.)
- Granted
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
- G08B13/06—Mechanical actuation by tampering with fastening
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
Abstract
The bell box includes one metal box 21 screwed to the wall with a further box (10, Fig. 1, not shown) screwed over the top of existing box without physical contact between the boxes. Microswitches 22 are provided on the inner box and are held down by the outer box. The inner box is fitted with heat sensors 16 and the inner and outer boxes are connected to the positive and negative circuits of the alarm system. Thus, if the outer box is removed the microswitches operate to activate the alarm, if heat is applied to the box the heat sensors activate the alarm and if an attempt is made to drill the outer box, the alarm will be activated if the drill hits the inner box. <IMAGE>
Description
HIGH SECURITY BELLBOX
This invention relates to a high security bell box
Bell boxes are well known security devices, which comprise of a back plate upon which a front cover is placed to form a box which is permanently secured to the wall by four screws and fitted with a micro switch which operates when the front cover is removed from the back plate, or if the back plate is removed from the wall.The box contains a bell or siren self activating unit and battery
Bell boxes are, however, relatively easy to overcome by filling with foam or by setting fire to the contents or by removal from the wall
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which::
Figure (1) shows the outer box cover
Figure (2) illustrates the inner frame which holds the outer box to the wall
Figure (3) shows the lid of the inner box
Figure (4) shows the body of the inner box
Referring to the drawing of the bell box which comprises of a siren mounted within Box (21) which is fitted with two heat sensors (16) and micro contacts (22)
Box (21) is secured to the wall with 4 plastic insulators (20) with raw bolts or similar means (not shown) Lid (18) has grille (15)
Box (21) is secured to lid (18) via holes (17) to nuts (19) with bolts or similar means (not shown)
The frame (12) is secured to the wall over Box (21) through holes (14) which is secured with four screws or similar fixing (not shown)
Outer Box (10) is secured through holes (11) to frame (12) with nuts or bolts (13) or similar means (not shown)
Box (21) has not contact with frame (12) or box lid (10). Micro switches (22) are
held down by box (10).
A positive connection is fitted to the inner box and a negative is connected to the outer box both of these are connected to the positive and negative circuits of the control panel.
Claims (2)
1. The High Security Bell Box comprises of one metal box with a further
metal box with n@ back mounted over the top. The inner box is fitted
with two micro switches, which when the outer box is removed activates
the siren which is mounted within the inner box 2. If any attempt is made to drill the outer box and the drill hits the @@@er box the alarm will trigger 3. If any heat is appl@ed to the cuter box exceedine 40 C, when the @@@er rises to that temperature the alarm will trigger.
4. If any attempt is made to fill the box with foam it will only penetrsate
the inner void.
5. Any attempt to remove the total outer box or lid only will trigger the siren in the inner box which is still secured t@ the wall. Amendments to the claims have been filed as follows 1. The High Security Bell Box comprises of one metal box with a further
metal box with no back, secured separately to the wall over the top.
The inner box is fitted with two micro switches and heat sensors and
when the outer box is removed this activates the siren which is
mounted within the inner box.
If any attempt is made to drill the outer box, and the drill hits
the inner box the alarm will trigger.
If any heat is applied to the outer box exceeding 40 C, when the inner
rises to that temperature the alarm will trigger.
If any attempt is made to fill the box with foam it will only penetrate
the inner void which is sectionalised. This will mean only one
section is filled with foam at any one time and this will not reduce
the sound output of the warning device.
2. Any attempt to remove the total outer box or lid only, will trigger
the siren in the inner box which is still secured to the wall.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8723694A GB2210718B (en) | 1987-10-09 | 1987-10-09 | High security bell box |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8723694A GB2210718B (en) | 1987-10-09 | 1987-10-09 | High security bell box |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8723694D0 GB8723694D0 (en) | 1987-11-11 |
GB2210718A true GB2210718A (en) | 1989-06-14 |
GB2210718B GB2210718B (en) | 1991-06-12 |
Family
ID=10625022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8723694A Expired - Lifetime GB2210718B (en) | 1987-10-09 | 1987-10-09 | High security bell box |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2210718B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2225470A (en) * | 1988-10-14 | 1990-05-30 | Grant Design Limited | Alarm tamper detection device |
GB2389946A (en) * | 2002-06-11 | 2003-12-24 | Cqr Security | A burglar alarm with an interchangeable cover |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB292649A (en) * | 1927-03-09 | 1928-06-11 | Henry John Tibbles | Improvements to electric burglar alarms |
GB2091922A (en) * | 1981-01-27 | 1982-08-04 | Automated Security Holdings | Alarm bell assembly |
GB2174830A (en) * | 1985-04-27 | 1986-11-12 | David Clark | Tamper-proof enclosures |
-
1987
- 1987-10-09 GB GB8723694A patent/GB2210718B/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB292649A (en) * | 1927-03-09 | 1928-06-11 | Henry John Tibbles | Improvements to electric burglar alarms |
GB2091922A (en) * | 1981-01-27 | 1982-08-04 | Automated Security Holdings | Alarm bell assembly |
GB2174830A (en) * | 1985-04-27 | 1986-11-12 | David Clark | Tamper-proof enclosures |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2225470A (en) * | 1988-10-14 | 1990-05-30 | Grant Design Limited | Alarm tamper detection device |
GB2389946A (en) * | 2002-06-11 | 2003-12-24 | Cqr Security | A burglar alarm with an interchangeable cover |
Also Published As
Publication number | Publication date |
---|---|
GB2210718B (en) | 1991-06-12 |
GB8723694D0 (en) | 1987-11-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19981009 |