![]() The discs are separated by nylon or plastic discs that allow them to turn independently. In order to open the lock, the discs turn and stop in a preprogrammed position or notch. The type of key can be seen in the diagram below.Ī way to get around ward locks is the skeleton key that has a single cut out capable of bypassing all of the wards.Ĭombination locks are opened by aligning a succession of discs in the proper order, with the most common combination locks having an internal mechanism of interconnected discs. For places that need more security, the number of wards is complex and intricate, making it very difficult to open a door without the key. The key of a ward lock has cut out sections that are capable of passing through the wards. The earliest form of key lock was the warded lock, or ward lock, which used a set of obstructions called wards. They can have extra security measures that prevent the bolt from being retracted without engaging the lock. Strike plates are made of heavy duty metal and require a great deal of force to be removed. It is attached to the door frame and comes in several varieties depending on the required level of security. The strike plate is where the plunger or bolt is inserted into the frame of the door. The latch on the deadbolt key lock below can be seen on the left of the image. It is the portion of a key lock that extends into the door frame and must be perfectly matched in order to securely fit into the strike. The name that is used depends on the manufacturer and the designer of the lock. The part of the lock that moves into the strike plate has several names, which include latch, bolt, and plunger. It is the body of the lock and in rotational locks it is round. The key cylinder is where the key is inserted to move the pins to retract the plunger from the striker. Note that the pins have notches cut below their top that have to be precisely and carefully machined. ![]() In the image below, the tiny pins can be seen resting on the teeth of the key, with the second set of pins and springs placed above them. The most difficult part of the manufacture of a key lock is the pins, which have to have exceptionally precise tolerances within ± 0.001 of an inch. This function can be seen in the diagram below. When the correct leveled key is inserted, it is allowed to rotate by the pins, which impede a key with incorrect levels. Inside the key mechanism are pins that line up with the levels of the key. In a normal five tumbler lock, there are 1024 different possible combinations of levels. Keys have five high points that are cut at differing levels, which are identified by numbers that can number from one to seven. The casing for the key lock can be made of a variety of materials including brass, chrome, steel, nickel, and alloys of those metals.įor standard tumbler key locks, the key is made first. The metals used to make key locks include brass and zinc for the internal mechanism, with steel for the cam that protrudes from the lock into the striker on the door frame. Unlike locks purchased at the local home improvement store, high security locks are required to meet an established set of standards and are capable of performing in the most abusive conditions. They are engineered from high quality materials that ensure a secure and perfect fit. ![]() Locks that are designed for a special purpose begin with an understanding of the application where they will be placed. The materials used to produce a lock determine whether the lock is low security grade or high security grade since low security grade locks are made of inexpensive materials and are mass produced. They come in designs, forms, and configurations to specifically fit the needs of an application and are carefully installed to ensure smooth operation and efficiency. The various types of locks have a similar function: keeping things in or out. Over the last hundred years, locks have become very sophisticated with programming, electronic mechanisms, and various forms of automatic locking methods. Prior to the modern age, all locks were mechanical and used levers, wheels, gears, and cams. Lock mechanisms can be categorized as key operated, combination, or electric. The mechanism of a lock is the internal structure of a lock, which can be warded, pin tumbler, spindle, or disk tumbler. The term lock is used to describe any type of device that is attached as an extra security measure and includes a long list of padlocks, combination locks, door locks, dead bolts, restraining bolts, electric locks, and key locks. The mechanism of a lock holds or moves a latch, bolt, or shackle away from or into the lock position. They are metal devices that prevent entry or access for privacy, security, or safety reasons. A lock is a mechanism designed to connect an opening to its frame using a latch, solid cylinder, bolt, or some other form of a solid metal plunger that extends into the strike.
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