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The Swing rifle was a design developed by a number of target shooting enthusiasts who came together in 1970 at Bisley. The design's primary instigators were George Swenson and Laurie Ingram. [ 1 ] At the time target rifle competition in the UK was dominated by designs based on military actions such as those of the Lee–Enfield and Mauser 1898 .
A deadbolt or deadlock is a type of lock morticed into a wooden door where a bolt is thrown into the door frame, using a key from either side, to secure the door. [ 1 ] It is distinct from a spring bolt lock because a deadbolt can only be opened by a key or handle.
Swing Mk4 bolt action target rifle A Kelbly rifle action bolt that has been oiled to run smoothly A US Marine extracts a spent round from an M40A3 using a bolt-action mechanism Bolt action is a type of manual firearm action that is operated by directly manipulating the turn-bolt via a bolt handle , most commonly placed on the right-hand side of ...
swing bar lock. A door security restrictor, aka a door swing bar lock, is a newer device intended to replace door chains. It consists of a U-shaped bar that attaches to a hinge on the doorframe, and a knob on the door. The bar swings over the knob to restrict the full opening of the door.
Crash bar doors in a school, with upper vertical rod latches. A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar.
A latch bolt is an extremely common latch type, typically part of a lockset. It is a spring-loaded bolt with an angled edge. [1] [2] When the door is pushed closed, the angled edge of the latch bolt engages with the lip of the strike plate; a spring allows the bolt to retract. Once the door is fully closed, the bolt automatically extends into ...
This example has two bolts: a sprung latch at the top, and a locking bolt at the bottom. Right: the box keep, installed in the doorjamb. A mortise lock (also spelled mortice lock in British English ) is a lock that requires a pocket—the mortise —to be cut into the edge of the door or piece of furniture into which the lock is to be fitted.
Locking was achieved by a solid bolt head and three bolt lugs. The bolt head was designed to be removable thus allowing the owner to vary the head space by replacing the head. The bolt head is of the floating type whereby it is a loose fit in the bolt tube and held in place by a pin, the firing pin passing through a hole in that pin.
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