Re: Lever locks gutted
Posted:
Sun Apr 09, 2017 2:07 amby ratlock
Hi@ Patric star.
When picking it, ( without the benefits of seeing inside). What feels like a 7 lever lock ,isn't a 7 lever lock.
What is being moved in the place of the 7th lever is a plate that moves a floating bolt stump.
If you move it, your pick gets trapped, and you can't get to the 6 actual normal levers.
Capt Dunc pointed out that this also has the effect of foiling any attempt to overlift the lock.
Looking at the lock now, with the benefits of hindsight, you would just tension as normal, and leave the stump plate in position 7 alone, and pick levers 1 to 6 as normal.
Last year when trying to open this, lock. I hadn't enough experience to get an open.
But after coaching from we11ington, and Capt Dunc, can now apply a more reasoned approach to picking a lock, and interpret what's happening on the inside.
Re: Lever locks gutted
Posted:
Sun Apr 09, 2017 10:16 amby ratlock
Here is a cheap 6 detainer lock. Tension in the middle, with 3 detainers either side.
Re: Lever locks gutted
Posted:
Mon Apr 17, 2017 12:01 pmby huxleypig
WE30C. 8 lever lock, with blocker. This pic is actually showing something pretty remarkable. There is finally some light at the end of the tunnel for picking this monster.
Re: Lever locks gutted
Posted:
Mon Apr 17, 2017 12:43 pmby femurat
You overlift the first lever to block the blocker? That's very clever and, to some extent, ironic!
Great idea
Re: Lever locks gutted
Posted:
Mon Apr 17, 2017 1:03 pmby huxleypig
femurat wrote:You overlift the first lever to block the blocker? That's very clever and, to some extent, ironic!
Great idea
It could be any lever and in practicality you'd use the rear one, so you weren't blocking the keyway for your pick tool, this just shows it clearer.
Re: Lever locks gutted
Posted:
Sat May 27, 2017 2:29 pmby MartinHewitt
ratlock wrote:Hi @ Huxleypig. See what you mean with the cuts on the top of the levers. On this lock they dont seem to have a purpose. Maybee in another Tann lock they would.
Here is Two pictures. One fully locked, and One fully unlocked.
The cuts at the top are for the detector functionality. A Tann with detector is shown in Fig. 5.68 in High-Security Mechanical Locks: An Encyclopedic Reference. That is also why there are notches for unlocking it more than unlocked.
Re: Lever locks gutted
Posted:
Sat May 27, 2017 6:10 pmby MartinHewitt
ratlock wrote:Made by the famous Mr Hobbs.
Btw. the bolt stump is movable to the left. This happens when you try to pick the lock and put tension onto the bolt via the curtain. When the stump moves to the left the right end of the brass thingy which can be partly seen behind the bolt moves down. Fully hidden in this photo is the stump on the back plate. This stops the movement of the brass thingy if the right end has been lowered. The stump moves to the right when the levers fall down.
Re: Lever locks gutted
Posted:
Sat Mar 17, 2018 5:27 pmby safecracker33
huxleypig wrote:That Tann 7 lever has an interesting lever shape. Those cutouts on the top, is there nothing that they interact with? Does turning the key in the unlock direction (when already unlocked) put the stump into those gates on the other side?
Those levers will have been used in a detector type lock which is why you have the top cut outs and the cut outs to allow the key to throw the bolt further to the locked position to reset a triggered detector.
Re: Lever locks gutted
Posted:
Sat Mar 17, 2018 9:37 pmby huxleypig
safecracker33 wrote:huxleypig wrote:That Tann 7 lever has an interesting lever shape. Those cutouts on the top, is there nothing that they interact with? Does turning the key in the unlock direction (when already unlocked) put the stump into those gates on the other side?
Those levers will have been used in a detector type lock which is why you have the top cut outs and the cut outs to allow the key to throw the bolt further to the locked position to reset a triggered detector.
Yes, that's why I asked about turning the key in the unlock direction (when already unlocked). I have a few examples of the Chubb detector. The newest, Tann version is definitely the hardest to pick.
Re: Lever locks gutted
Posted:
Sat Dec 22, 2018 2:15 pmby rphillips52
huxleypig wrote:That Tann 7 lever has an interesting lever shape. Those cutouts on the top, is there nothing that they interact with? Does turning the key in the unlock direction (when already unlocked) put the stump into those gates on the other side?
In some other versions of these locks, a Chubb-type detector is fitted. The British Post Office, and possible the army, used quantities of such locks, and similar locks of this footprint were supplied by several makers. There are detail differences internally, especially in the detector.