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A Chubb detector lock is a lever tumbler lock with an integral security feature, a re-locking device, which frustrates unauthorised access attempts and indicates to the lock's owner that it has been interfered with. When someone tries to pick the lock or to open it using the wrong key, the lock is designed to jam in a locked state until ...
Again, the term refers to the lock mechanism, so a lock can be both a mortise lock and a lever tumbler lock. In the modern lever tumbler lock, the key moves a series of levers that allow the bolt to move in the door. [5] Pin tumbler lock, commonly used for mortise locks in the US. The next major innovation to mortise lock mechanisms came in 1865.
The pick is then used to lift each lever inside the lock to the correct height so that the locking bolt can pass. Higher security lever locks (such as the five-lever) usually have notches cut into the levers. These catch the locking bolt and prevent it from moving if picking is attempted (similar to the security pins in a pin tumbler lock).
Casemate-mounted 5"/50 caliber gun on the USS North Dakota. A casemate is an armoured structure consisting of a static primary surface incorporating a limited-traverse gun mount: typically, this takes the form of either a gun mounted through a fixed armour plate (typically seen on tank destroyers and assault guns) or a mount consisting of a partial cylinder of armour "sandwiched" between ...
It may also refer to a gun's lock which uses slow match to ignite the powder charge. [6] [7] The matchlock was a lever mechanism that simplified the ergonomics of firing. Slow match would be held clear of the flash pan in a spring-loaded pivoting arm (the serpentine). Depressing the firing lever would dip the burning match into the flash pan.
Protector Medium Caliber RWS is designed as a vehicle turret for 20 to 50 mm autocannons, with coaxial machinegun of 5.56 to 7.62 mm. Specifications (including weapons and ammo): [11] Sea Protector The USCGC Sea Devil (WPB-87368) with an M2 Browning.50 Caliber Machine Gun. Sea Protector is developed for naval applications. [12]
Attaching the barrel to the receiver using a barrel nut and a barrel with a shoulder is an alternative to action threads, which has been used in firearms such as the Sten gun and AR-15. Hand tools Quick barrel change systems is an increasingly popular alternative, as seen in for example SIG Sauer 200 STR, Roessler Titan or Blaser R8.
A gun carriage is a frame or a mount that supports the gun barrel of an artillery piece, allowing it to be maneuvered and fired. These platforms often had wheels so that the artillery pieces could be moved more easily. [1] Gun carriages are also used on ships to facilitate the movement and aiming of large cannons and guns. [2]