The 3 Lever Sashbolt Mortice Door Lock is a classically designed, low cost sashlock, which offers additional security for internal doors and outside applications such as sheds. The sashbolt is to be operated by a handle. Available in 64mm (2 ½") and 76mm (3") and in both brass effect and satin finishes.
What is the difference between a 3 lever and 5 lever lock? The difference between a 3 lever lock and a 5 lever lock is that a 3 lever lock is less secure because it has fewer levers which increases the risk of key duplication. Also, a 3 lever lock will NOT be BS3621 approved due to the poor security of the lock.
The three-lever sash lock is designed for internal doors in domestic properties. These locks are best suited for doors needing to be locked for privacy purposes, but where high security is not required - it has fewer levers and therefore key duplication is much easier.
You can check this by looking on the faceplate of the lock, the number of levers should be stamped there.
One of the most readily available and secure types of lock is the mortice lock. These earned their name thanks to the pocket (or mortice) that the bolt slots into, which is cut into the internal face of the doorframe. When the bolt is in the mortice, the door is unable to move and is securely locked.
Whilst not all locks follow the same template, nine times out of ten, other measurements can be correctly assumed based on the case depth. There are many different case depths but the most common sizes are 64mm and 76mm. This is the metric equivalent to 2.5" and 3" lock cases from back in the imperial days.
A lever tumbler lock is a type of lock that uses a set of levers to prevent the bolt from moving in the lock.
Two and three lever mortice locks can be picked relatively easily, because tools can be inserted up into the lock from the key hole from where the burglar can manipulate the levers.
There are two sizes of mortice locks: 21/2” and 3”. If you are installing a mortice lock to a door with a narrow frame, or any door for that matter, it's very important to know what size lock you need.
A mortice (also spelt mortise) is a cavity or slot, usually rectangular, cut into a piece of wood or stone in order to receive a matching insert of the same dimensions.
What is a key-operated multi-point locking system? A multi-point locking system bolts the door into the frame and locks at multiple points at the turn of a key, offering you a high level of security. It's common in more modern houses as you'll usually find this type of lock on UPVC and composite doors.
Deadbolt door locks are the most secure type of key lock and are usually used on a home's exterior door. Available in single- and double-cylinder styles, deadbolts are rated according to their strength from Grade 1 to Grade 3. A Grade 1 is the highest grade and provides the most security.
Anti-snap locks are high security euro lock cylinders that are designed and tested to protect against lock snapping stopping a thief from breaking the lock into two parts. This type of cylinder is usually found on uPVC doors. You may find people refer to Anti-Snap locks as 'Snapsafe Locks' as well.
Lever locks are used extensively in the doors of residential homes as well as commercial buildings. Some homeowner's insurance companies even require their insured customers to have lever locks on all their doors. It's an otherwise basic precautionary measure that protects against break-ins and intrusion.
In lock: Development of modern types. … in England, patented a double-acting tumbler lock. A tumbler is a lever, or pawl, that falls into a slot in the bolt and prevents it being moved until it is raised by the key to exactly the right height out of the slot; the key then slides the bolt.
Backset is measured from the centre of the keyhole to the edge of the lock. Most backsets are commonly measured at either 44mm (for a 64mm (2½”) lock) and 56mm (for a 76mm (3”) lock). Typically a lock adjacent to a glass panel will be 2½” (44mm) and otherwise 3” (56mm), but you should always measure to be sure.
Are mortise door locks universal? Yes, a mortise lock set and mortise door lock is universal and can easily be used to replace most other lock sets, especially on an older door.
A mortice sashlock is a combination of a latch and deadlock. They are used to open and close a door and can also be locked with a key from both sides. The latch is operated by a door knob or handle and you usually cover the key hole with an 'Escutcheon'.
Mortice locks are generally stronger and secure than a bored cylindrical lock. Ironically, installing a Mortice Lock initially can weaken the structure of a typical wooden door, but by choosing a 5 lever Mortice Lock your home will be more secure.
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.
Mortise locks can function in multiple, enigmatic ways. Entrance, classroom, classroom security, office, passage, and storeroom functions are most common for schools and hospitals, however, there are myriad other operations available for locking and unlocking doors.