- Beholder 2 Picking Lever Locks Oil Rubbed Bronze
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(Redirected from Lever locks)
Step 2 – Understanding How a Lever Lock Functions. A lever lock generally consists of a lever attached to a deadbolt in such a way that neither can move without the latch being raised. Because of this, it’s possible to pick a lock with some wire shaped into a hook and some patience. Step 3 – Shaping the Wires. Shape two wires into. 2) Don't get stuck on one particular answer. For example, in the 'how long it lasts' puzzle above, the players could place the following order: Candle, rose, human, tree, dragon, sundial, moon, raven; saying that the sun (represented by the sundial) will outlast even dragons, and the moon will outlast even it, but that nothing will outlast. Remember: only pick locks that are yours and that are not in use! Contact me at: [email protected] #locksport #lockpicking #locksmith #pentest.
Animation of a lever tumbler lock mechanism
A lever tumbler lock is a type of lock that uses a set of levers to prevent the bolt from moving in the lock.[1] In the simplest form of these, lifting the tumbler above a certain height will allow the bolt to slide past.
The number of levers may vary, but is usually an odd number for a lock that can be opened from each side of the door in order to provide symmetry. A minimum number of levers may be specified to provide an anticipated level of security (see five-lever locks section).
History[edit]
'Double acting' lever tumbler locks were invented in 1778 by Robert Barron of England.[2][3] These required the lever to be lifted to a certain height by having a slot cut in the lever, so lifting the lever too far was as bad as not lifting the lever far enough. This type of lock is still used today, on doors in Europe, Africa, South America and some other parts of the world.
A five-lever lock which is designed to be mortised into a door. The faceplate has been removed to see the inner workings.
Design[edit]
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. A lever will have pockets (or gates) through which the bolt stump (or post or fence) moves during unlocking.[1]
There has not always been universal agreement about which variants of the basic design merit the terms 'lever lock' or 'detainer lock' or both.[4][5][6][7] Some authors use the term 'detainer lock' to refer specifically to variants where the gates are 'open' (i.e. at the edge of the lever), rather than 'closed' (i.e. entirely surrounded by the lever).[8]
Lever locks generally use a bitted key. Some locks used on safes use a double-bitted key, as do some door locks of a type often used in Southern and Eastern Europe.
Three-lever locks[edit]
A three-lever lock is a common type of lever lock, but is generally used for low security applications such as internal doors[9] as their tolerances are much lower (there are fewer combinations of key available, so they are likely to unlock doors they shouldn't).
Five-lever locks[edit]
A five-lever lock is often required for home insurance and often recommended by the police for home security.[10] There are various grades but the current British Standard (BS3621:2007) is usually required for insurance purposes. Locksmith Valerie Olifent notes that, 'The doors of many historic churches still carry an old wooden lock although often you find that a modern 5-lever mortice lock has been installed alongside it to meet insurance requirements.'[11] BS3621:2007 requires a bolt throw of 20 mm rather than the 14 mm of the earlier British Standard.
Most BS3621 locks have anti-pick devices built in to reduce the chance of lock picking, along with hardened bolts and anti-drill plates to reduce risk of physical attack.
Vulnerabilities[edit]
Beholder 2 Picking Lever Locks Oil Rubbed Bronze
A type of lock pick used to pick lever tumbler locks
Lever tumbler locks can be picked with a tool called a curtain pick which is inserted into the keyway of the lock, and a force is applied to the locking bolt. 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).
The Chubb detector lock is a variation of the lever lock which was designed to detect and prevent picking attempts.
Lever locks can be drilled, but usually a template or stencil is required to mark the drilling point, as the lock mechanism is commonly mortised into the door and so it is harder to determine the point at which to drill.
See also[edit]
References[edit]
Wikimedia Commons has media related to Lever tumbler locks. |
- ^ abcRathjen, Joseph (1995). Locksmithing: From Apprentice to Master. McGraw-Hill. pp. 90–93. ISBN0070516456.
Lever tumbler locks are built and operate much differently than the conventional and more popular pin tumbler lock. Although they have their place in high-security applications, such as safe deposit boxes with a double-set tumbler design, they are used mostly for applications that allow a more lenient state of security. Today, they are used mostly for mailboxes, luggage, lockers, and other light security applications..
Their biggest disadvantage, however, is that they do not allow for as many master-key combinations as pin tumbler locks.
In a basic, fixed, lever tumbler lock design, the entire lock is enclosed in a case.. The simple lever lock has three or more lever tumblers that pivot on a post and are pushed into the 'locking' position by springs, which are bound against the case and attached to the tail end of each lever tumbler. When the proper key is inserted into the lock and turned, it raises each tumbler to the point where the fence of the lock's bolt can clear the obstruction or face of each tumbler, which also blocks each tumbler's gate. When all the tumblers are in this position, the fence can be thrown through each tumbler's gate, which pushes the bolt into the retracted position.
In other lever lock designs, a post is connected directly to the bolt. With the lever tumbler lock, when the tumblers are raised to the proper position the post of the bolt will pass through the front gating to the rear gating and hold the bolt in the retracted position.
There are two different ways that the lever lock bolt can be thrown. In some lever locks, the end, or uncut, portion of the key that acts as a bolt throw will make contact with a bolt throw notch cut into the bolt. The other method is to use a trunnion with a talon built on the bottom of it. In both instances, when the key is turned contact is made with the bolt throw notch of the bolt, which allows it to be retracted.
Different types of lever locks have different tumbler designs. [Simple] lever [tumblers] with one gate [rely] on the obstruction built onto the face or front of the tumbler and its tumbler trap to lock the bolt into either the locked or unlocked position. [Other types] of lever tumbler [use] a front and rear gate to trap the bolt into either position.
Some lever tumblers have serrated saddles, or bellies, others have false gates. These varying designs make it more difficult to pick a lever tumbler lock. Lever tumblers with false gates usually are reserved for high-security units. - ^'The history of locks'. London Locksmiths Ltd. Retrieved 8 November 2011.
- ^Bellis, Mary (8 November 2011). 'The History of Locks'. About.com Inventors. About.com. Retrieved 8 November 2011.
- ^Priess, Peter J. (26 September 1979). A Study of Surface-Mounted Door Locks from a Number of Archeological Sites in Canada. National Historic Parks & Sites. ISBN9780660101804 – via Google Books.
- ^Price, George (1856). 'A Treatise on Fire and Thief-proof Depositories, and Locks and Keys'. Simpkin, Marshall and Company – via Google Books.
- ^Friend, Mick (2004). The Encyclopaedia for Locksmiths. Authors On Line Ltd. ISBN9780755201174 – via Google Books.
- ^Pulford, Graham (17 October 2007). High-Security Mechanical Locks: An Encyclopedic Reference. Butterworth-Heinemann. ISBN9780080555867 – via Google Books.
- ^Tobias, Marc Weber (1 January 2000). LOCKS, SAFES, AND SECURITY: An International Police Reference Two Volumes (2nd Ed.). Charles C Thomas Publisher. ISBN9780398083304 – via Google Books.
- ^'Lockshop Warehouse'.
2 & 3 lever mortice locks are generally only recommended for use on internal doors as they do not provide adequate levels of security externally
- ^'Insurance company requirements | The Crime Prevention Website'. thecrimepreventionwebsite.com. Retrieved 13 March 2016.
- ^'The Ancient Art of the Locksmith' http://www.buildingconservation.com/articles/locks/locks.htm
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Eye of the Beholder 2 - The Crimson Outpost
By Daniel D'Agostino, 2011-11-19
Crimson Tower Access
![Picking Picking](https://www.amigareviews.leveluphost.com/pic/eyeofthebeholder2-a.png)
Using the Stone Dagger on the portal at the end of Level 5of the Azure Tower takes you to the Priests' Quarters, the crossroads between thetowers. Just round the corner from the portal is the door with the crimson lock thatyou couldn't open earlier. Using the Crimson Key, open this door.
Just inside and to the right, another barrier is before you. Put the Eye of Talon,Hilt of Talon, and Talon's Tongue in the carving. This will cause it to melt away,leaving the newly forged +4 Talon (sword), the most powerful weapon in the game.
As you proceed to the west, there are three routes you can take. The southernmost westpassage has two pressure plates, and looks like a dead end. The northernmost westpassage has one pressure plate. Between these is a staircase going down to the west.
Downstairs
Beholder 2 Picking Lever Locks Latches
Going down the central staircase, you face some priests (one of which hurls a fireball).In this area you find a Mage Scroll of True Seeing (Mage Level 6), and also notice thepit in the ceiling.
Crimson Tower Outpost
Go back upstairs, and this time take the northern passage west. Stepping on the pressureplate triggers a fireball to be shot at you, but it remains sunken. Stepping on it a secondtime resets it, so only each odd-numbered time you step on it will throw a fireball.The pit after the fireball trap drops you downstairs, so time itright and go up the stairs to an isolated part of the Crimson Tower (I call this theCrimson Tower Outpost, but it's also known as the North Talon Tower). A copy protectonis triggered as you go up the stairs.
The beautifully decorated halls are already an indication that you must be gettingclose to your goal. Mages in this area are quite powerful and can cast spells likeMagic Missile and Fireball, but are not hard to kill. One of them drops a Crimson Ring,which you should pick up. A couple of levers in this area turn off the invisibleteleporters that can get you lost pretty quickly.
Beholder 2 Picking Lever Locks
In the northwest corner of the level is a niche that transforms anything you putin it into a glass sphere. You need three glass spheres, so if you used up any ofthe three you found earlier in the game, you can use the niche to make up for thedifference. Either way, once you have three glass spheres and the Crimson Ring, thereis nothing more to do here, so go back downstairs to access theCrimson Tower proper.
Crimson Level 1 Access
From the Crimson Outpost, cross the pit andthe pressure plate (quickly to avoid the fireball) so you are back at the mainarea giving access to the Crimson Tower. Webvideohunter pro 6 0 8. At the south end are two pressure platesleading westward to what looks like a dead end. Drop something on both pressureplates to open up the passage.
Beholder 2 Picking Lever Locks Padlocks
Priests guarding the stairs to the Crimson Tower greet you with a fireball. Youshould respond in turn using spells of mass destruction. Once they are out of theway, go upstairs to Crimson Tower Level 1.