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Trip wires are frequently used in booby traps — where either a tug on the wire, or the release of tension on it, will trigger the explosives. Soldiers sometimes detect the presence of tripwires by spraying the area with Silly String. It will settle to the ground in areas where there are no wires; where wires are present, the "strings" will ...
The device has a solid bracket for attaching to a post, and a triggering device with tripwire arms. A spring-gun , booby trap gun etc. is a gun , often a shotgun , rigged to fire when a string or other triggering device is tripped by contact of sufficient force to "spring" the trigger so that anyone stumbling over or treading on it would ...
Autocall was founded in 1908 by two businessmen from Shelby Electric Company after they witnessed a demonstration of a unique telegraph system in use at a plant for employee communication while on a business trip. Seeing the need for such a system at their own company, the two designed an automatic version of this system and founded Autocall.
A tripflare is a device used by military forces to secure an area and to guard against infiltration. [1] It consists of tripwire around the area, linked to one or more flares . When the tripwire is triggered, as by someone unsuspectingly disturbing it, the flare is activated and begins burning.
An automatic trip is an action performed by some system, usually a safety instrumented system, programmable logic controller, or distributed control system, to put an industrial process into a safe state. It is triggered by some parameter going into a pre-determined unsafe state.
The Claymore can also be activated by a booby-trap tripwire firing system for use in area denial operations. The Claymore fires steel balls out to about 100 m (110 yd) within a 60° arc in front of the device. It is used primarily in ambushes and as an anti-infiltration device against enemy infantry. It is also used against unarmored vehicles.