Joseph bates & sons patent lock

[ratlock]

I was just kidding about him beating it. But it sometimes feels like the thing to do.
https://www.youtube.com/watch?v=78b67l_yxUc

[A9B4U]

Great pictures @Ratlock
Good to see them saved : )

[safecracker33]

Thanks for the pics. Seems to be a primitive anti-pressure system, but I don't think it's working properly.

Could you show me what a modern working system looks like.

The recent ones I can think of were Churchill CHAP (Churchill anti pick), but I think they are obsolete now, and the only other modern one I can think of is S&G FAS 6890. I will try to sort you some pictures out.

[ratlock]

Thanks @safecracker33 That would be great.

[MartinHewitt]

What is this anti-pressure device? Is there a difference between the 6880 and the 6890? Or do both (and also the 6860) have this anti-pressure device? I cound not see any difference between the 6880 and the 6890, but may the difference is deep down and can't be seen so easily? Here are photos of a 6860: http://wiki.koksa.org/FAS_vds_Klasse1_verstellbar. I could also make photos of a 6890.

[ratlock]

The anti pressure device on the bates lock was where lever 7 would be.

Instead of being a lever, it moves the bolt stump out of the way, making it impossible to pick.If you leave it alone, you only need to pick the front 6 levers.
It also jammed the pick, if you tried to lift it, like a normal lever.

Capt Dunc pointed out, that it was also a way to stop overlifting the lever pack, and catching the gates as they fall on this particular lock

[MartinHewitt]

I think I know what you mean. In Price wrote in his book something about this.