What? you want to drill open my Lockwood lock?
Nearly all the domestic range of Lockwood pin tumbler locks use a specific anti-bump lock cylinder.
The lock cylinder not only makes bumping much harder but it also makes the locks harder to pick open. Good for security, but when you lock the keys inside your home unlocking the door might be a bit harder then the average lock.
When these locks hit the market even we had troubles opening them. They are a challenge to open if you are not very skilled in lock picking! For a small change in design Lockwood did quite a good job at making their locks much harder to open.
So the question you might be asking is why are locksmiths still drilling open these locks when the keys are locked inside or lost?
Well, you would have to ask the person who comes to open your lock armed with a drill that question. I could guess, that they haven’t taken the time to gain the skills they require to pick open locks?
I would definitely ask if the locksmith you call to open your door can open your lock without any damage and without drilling the lock open. It might not sound like a big deal, but it will take much longer to drill open these locks and cost you for a replacement lock.
So how can you tell which locks have anti-bump cylinders? Currently they are in all the domestic range of Lockwood pin tumbler locks and as far as I have seen Whitco use an anti-bump cylinder configuration as well. It is not only Lockwood and brand name locks that use anti-bump cylinders. Many locksmiths also add anti-bump cylinders to standard looking locks to increase security as well as registered keyed locks.