Chubb detector lock

The Chubb (also tumbler lock (abbreviation: called ZH) or tosisches Castle ) is named after its inventor, Jeremiah Chubb, who has developed it out of the tumbler.

It comprises a plurality of blocking tumblers, which are lifted by the key bit stepped so that the bolt can be moved. The bolt is pre- closed by turning the key twice ( double speed ) as a rule. The possibility of variation consist in the number of different key blade shapes and the different cuts of the key bit.

The key which can be kept at first glance for a simple locker key or tumbler, has at the end of the beard, however, some spikes. These prongs raise the tumbler in a certain amount and give the bolt free. Are the spikes in the key too high or too low, then it can not open the lock.

Chubbschlösser with case and built-in AC have the peculiarity that the tumblers only block the transport bar, but not the operation of the trap. So if the door is inadvertently shut and locked, you can open it with a sufficiently stable Dietrich, so that, where appropriate, eliminates the need to key emergency service.

In Germany Chubbschlösser for apartment doors and front doors were common only to the 1950 's and 1960's, because they have a relatively bulky and bulky compared to key cylinder locks; for room doors again they are too expensive. In Germany they are used in the private sector frequently in the form of block locks for arming of burglar alarm systems.

There are also further developed safe and complicated Chubbschlösser that are often used for prison cell doors, lockers and safes. The high-quality and complex types are considered to be extremely safe.

Modern Chubbschlösser in front doors are particularly common in the UK and Scandinavia. There they are considered much safer than cylindrical locks.

• Door lock