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Old box

Information about locks themselves. Questions, tips and lock diagram information should be posted here.

Old box

Postby vikebo » 6 Aug 2021 11:31

Hello,

New here, and relatively new to lockpicking.

Recently got an old box which used to belong to my grandmother. According to my mother it hasn't been opened since the eighties, and I don't have a key. I don't expect it to contain anything valuable or important, but it would be fun to open it "not-destructively".

What I have found out so far:
The centre part is just a slotted cylinder and it rotates freely 360 degrees. There is a plate about 10 mm behind the front and nothing within key's reach in this space.

Behind the second plate I think I can feel four levers. They are all spring loaded and have longer travel on the left side (CW rotation) than on the right side.
Behind the levers something blocks the pick between 10 and 2 o'clock. Feels fixed with no flex or "springyness". I initially tried this for tensioning.

If I guide the pick outside the range a normal key would reach where the first lever is I can move something larger which is very "springy" and obviously is closely connected to the lid. The lid moves slightly when this manipulated. Again, don't think a key would reach this, but may be wrong.

I've tried tensioning the fixed thing behind the four levers, but all of the levers feel the same regardless of tensioning force. Then I thought maybe the first lever should be tensioned and made a bent tensioner giving better access to the pick. Had problems with the tensioner slipping when using the pick wire so I came up with a more stable contraption. Still same result, if I tension the first lever, the others feel the same regardless of tensioning force.

Not sure how to proceed since all the levers just return by the springs when the force from the pick is removed. Guess I need to apply tension somewhere I've not though of. Any ideas?

Eivind

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vikebo
 
Posts: 2
Joined: 6 Aug 2021 9:50

Re: Old box

Postby billdeserthills » 6 Aug 2021 18:13

I like to impression these locks open, you'll need a steel keyblank and a marker along with a file
billdeserthills
 
Posts: 3827
Joined: 19 Mar 2014 21:11
Location: Arizona

Re: Old box

Postby vikebo » 8 Aug 2021 16:03

Thank you for the suggestion, that would probably have the advantage of turning out a key as well.

Did a first attempt which was unsuccessful. The four levers showed up from the start, but not so easy to distinguish which was clearest. May have to try some other marking materials. After some filing the "fixed" thing beyond the levers started showing up. As a test I tried filing the key down in this area to see if it is actuated by the real key. The keyblank could rotate further for each filing until it made a complete turn without opening the lock. Will make some more keyblanks and try again.

By the way, any specific reason for using steel instead of softer materials for the keyblank?
vikebo
 
Posts: 2
Joined: 6 Aug 2021 9:50

Re: Old box

Postby billdeserthills » 8 Aug 2021 17:27

There is one cut on a steel key that you must never file & it sounds like you found it
billdeserthills
 
Posts: 3827
Joined: 19 Mar 2014 21:11
Location: Arizona


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