Mortice Locks are far more common in the UK and Europe and are widely used particularly on wooden doors rather than uPVC doors. In the UK the Mortice Lock is sometimes referred to as a 'Chubb' lock, this is simply down to Chubb being a brand leader for the Mortice Lock over the last twenty years or so.
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.
Chubb locks, now branded as Union are one of the most popular BS3621 approved deadlocks for front doors in the UK, a great secure popular 5 lever deadlock.
Identifying mortice locks
The locks get their name due to the mortise(a chiselled away section) that has to be cut into the door to fit the lock case. This lock case is usually in the form of a lever lock, although with the advent of the popular cylinder locks, these too can be combined with the mortice housing.
The difference between a mortice deadlock and sash lock is that a mortice sashlock has a latch and bolt to open and close the lock. Where-as a mortice deadlock does not have a latch to open the lock.
5 lever mortice deadlocks are a type of lock that is installed into the door material. The lock can be locked and unlocked using a key, and it has 5 levers to make it more secure. 5 lever mortice dead locks are available in a range of finishes, it can be used on both internal and external doors throughout a building.
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.
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.
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.
UNION brand has an extensive range of lock products for both residential and business properties. It has a presence is in more than 80 countries. The quality locks are produced in England by well-trained team of engineers.
Chubb Locks is a former brand name (expired 2010) of the Mul-T-Lock subsidiary of the Assa Abloy Group, which manufactures locking systems for residential, secure confinement and commercial applications.
Chubb locks, now branded as Union are one of the most popular BS3621 approved deadlocks for front doors in the UK, a great secure popular 5... Chubb Lock Handles, Lever (inside), use key (outside) to suit Union/Chubb 3R35 locks. Now branded as Union.
In 1998 Yale joined Chubb and Union, two other great names in security, thereby consolidating UK lock activities. In August 2010 the Chubb brand was inherited by Yale & UNION. The same trusted Chubb products are still available but under the UNION and Yale brands.
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.
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.
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.
5 lever locks are also generally sold in two sizes: 2.5 inch and 3 inch case sizes. These translate to 44mm and 57mm backset measurements. When choosing the right size for your external door, you will need to consider these factors: The thickness of your door.
Mortise locks are one of the most secure forms of residential hardware available today. What makes mortise locks so much more secure than their cylinder counterparts? A pocket cut into the short edge of the door, allows a longer and thicker mortise box to slide into the door itself, providing superior protection.
Unlike the mortise lock which requires a rectangular pocket to be cut into the door, the deadbolt requires 2 cylindrical holes to be cut into the door (bored cylindrical mounting).
ASEC 5 Lever BS3621 Mortice Locks
The ASEC 5 lever BS3621 Deadlock and Sashlock are probably the most cost-effective lock on the market. They are a copy of the Legge lock range that has now been discontinued but with these ASEC locks available you don't need the Legge range.
In 1818 J Chubb invented and patented the famous Chubb `Detector Lock` as a result of a Government competition to create an un-pickable lock. It was constructed so that if attempts were made to pick it open, the detector mechanism came into operation and rendered the lock inoperable.