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2. Warded lock - Wikipedia

   en.wikipedia.org/wiki/Warded_lock

   Double-sided ward locks nearly always have perfectly symmetrical bits. For single-sided locks, a cylindrical post is typically located in the center of the lock. Its purpose is to provide a point of leverage and pivot for rotating the key, and to help correctly align the key with the wards. The key has a corresponding hole which fits over the post.

3. Lever tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Lever_tumbler_lock

   The lock is made up of levers (usually made out of non-ferrous metals). Each lever needs to be lifted to a specific height by the key in order for the locking bolt to move. [1] Typically, the belly of the lever is cut away to various depths to provide different combinations, or the gate is cut in a different location, to provide differs.

4. Deadbolt - Wikipedia

   en.wikipedia.org/wiki/Deadbolt

   Door with two locks, one in the doorknob and a separate deadbolt. 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

5. Wafer tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Wafer_tumbler_lock

   A wafer tumbler lock is a type of lock that uses a set of flat wafers to prevent the lock from opening unless the correct key is inserted. This type of lock is similar to the pin tumbler lock and works on a similar principle. However, unlike the pin tumbler lock, where each pin consists of two or more pieces, each wafer in the lock is a single ...

6. Garston Lock - Wikipedia

   en.wikipedia.org/wiki/Garston_Lock

   One of only two remaining working examples of turf sided locks on the canal [2] (the other being Monkey Marsh Lock [3]), Garston Lock has been described as needing "more water to operate than the now more common brick or stone-sided variety" as the sloping sides increase the volume of the lock. [4] The two sets of lock gates work differently ...

7. Latch - Wikipedia

   en.wikipedia.org/wiki/Latch

   A slam latch uses a spring and is activated by the shutting or slamming of a door. Like all latches, a slam latch is a mechanism to hold a door closed. The slam latch derives its name from its ability to slam doors and drawers shut without damaging the latch. A slam latch is rugged and ideal for industrial, agricultural and construction ...