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2. Lewis (lifting appliance) - Wikipedia

   en.wikipedia.org/wiki/Lewis_(lifting_appliance)

   The external lewis, kerb lifter or slab lifter is a type of lifting device used in the stonemasonry trade since Medieval times. The external lewis was originally shaped like a pair of scissor-tongs, and swung from a treadwheel crane. [3] This type of tong device has been known as dogs and the holes in the stone as dog holes for many centuries.

3. Chubb detector lock - Wikipedia

   en.wikipedia.org/wiki/Chubb_detector_lock

   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 ...

4. Category:Locks (security device) - Wikipedia

   en.wikipedia.org/wiki/Category:Locks_(security...

   Download QR code; Print/export Download as PDF; ... (security device)" ... This list may not reflect recent changes. Lock and key; 0–9. 5 lever lock; A. Arrow lock ...

5. Electronic lock - Wikipedia

   en.wikipedia.org/wiki/Electronic_lock

   The key contains a power supply device, usually a rechargeable battery or a replaceable battery in the key, used to drive the system to work; it also includes an electronic storage and control device for storing the identification code of the lock. The software is used to set and modify the data of each key and lock. [2]

6. Trapped-key interlocking - Wikipedia

   en.wikipedia.org/wiki/Trapped-key_interlocking

   Releasing the key indicates that the interlocked device has been made safe; the interlocked device cannot be re-energized until the key has been returned and operated to retract the bolt. Some complex sequences use key exchange blocks or boxes, that allow alternative sequences of operation.

7. Combination lock - Wikipedia

   en.wikipedia.org/wiki/Combination_lock

   A Wordlock letter combination lock.. A combination lock is a type of locking device in which a sequence of symbols, usually numbers, is used to open the lock. The sequence may be entered using a single rotating dial which interacts with several discs or cams, by using a set of several rotating discs with inscribed symbols which directly interact with the locking mechanism, or through an ...

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Safety wire - Wikipedia

   en.wikipedia.org/wiki/Safety_wire

   A safety wire is used to ensure proper security for a fastener. The wire needed is long enough to reach from a fixed location to a hole in the removable fastener, such as a pin — a clevis fastener, sometimes a linchpin or hitch-pin through a clevis yoke for instance — and the wire pulled back upon itself, parallel to its other end, then twisted, a single end inserted through a fastener ...