The part into which the key is pushed is a cylinder, able to revolve in a larger cylinder outside it, which is fixed. The key cylinder has an arm on the inner end which moves the bolt of the lock when the key is turned. In the key cylinder is a row of upright holes, which are opposite an equal number of holes in the outside cylinder when the key slot is vertical. There are pins of various lengths in the holes, and springs above the upper ones to push each pair downwards.
When a key is pushed into the lock it drives. the pins upwards. If the correct key is used, the top of every lower pin and the bottom of every upper pin will be flush with the joint between the two cylinders, and the key cylinder is free to turn. A wrong key will drive one or more pins up too far, or not far enough, so that the two cylinders are locked together, and it is impossible to turn the key.
by And Drewson 7 years ago
What is a bump key?
by James Kenny 6 years ago
How do you get a broken key out of a lock?
by MarieLB 2 years ago
Is Truth perceived as a Lock on Freedom or perceived as a Key to it?Not much to add to the above really.
by Charlu 5 years ago
Should there be laws governing guns in a home that are not under lock and key?
by FROGGY2722 8 years ago
WHAT DOES THE SOUND OF A KEY GOING INTO A LOCK MEAN WITH NO VISIBLE KEY?
by George S McChristian 5 years ago
Has there ever been a V8 set up to fire on 2 cylinders at a time?Has there ever been a V8 set up to fire on 2 cylinders at the same time? Like 2, four cylinder engines with 1 crank shaft? It could also be a V6, V10, etc etc. My thoughts are that it could give the engine more hp and/or torque...
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