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aostling
11-21-2007, 09:00 PM
I saw no chain hardware stores in Peru, just small ferreterķas selling whatever the local people need. Locks, such as shown here, are available in great variety. Almost every street door has a padlock, and few are alike. I thought something like these might make a nice shop project. Does anybody know what the innards might look like?

http://i168.photobucket.com/albums/u183/aostling/lock4.jpg

http://i168.photobucket.com/albums/u183/aostling/lock1.jpg

x39
11-21-2007, 10:53 PM
Interesting. I'd have been inclined to bring a few home with me for closer examination.

aostling
11-21-2007, 11:01 PM
Interesting. I'd have been inclined to bring a few home with me for closer examination.

I could not find the old style padlocks for sale. But I did bring home a conventional padlock, much like this one, having an embossed head of a puma.

http://i168.photobucket.com/albums/u183/aostling/lock5.jpg

Paul Alciatore
11-22-2007, 01:08 AM
I can't be sure for each and every one of the ones you saw, but it is probably a simple mechanism. The key is probably a simple rectangle flag on a shaft. The flag has some cutouts on the three sides to form a pattern. The key goes in a slot and pivots with a hole inside in the rear cover. There is probably a piece the key has to get past while rotating that has a cutout to match the pattern cut into the flag part of the key. After it gets past that piece, it presses against a simple spring loaded catch that holds the shackle closed. This releases the shackle and the lock opens. It probably snaps shut with a sloped catch on the shackle and catch piece so the key is not needed to lock it.

Older houses may still have similar locks even in this country. Not very secure as they are easily picked with a bobby pin or twisted stiff wire. Anything that can get past the blocking piece.

kendall
11-22-2007, 02:11 AM
The internal workings are likely typical 'skeleton' key type, where the only control of which key fits is a series of grooves or bumps in the body of the lock.

The only pic I can find at present is of a mortise lock, which is a very simple lock type, but gives the idea. These, since they appear to be used as serious locks, would (should) be of a more complicated internal construction.

http://www.go-west.co.uk/ad/lockmeister/types.htm

second pic down.

Some of those simple type locks are actually pretty difficult to open, with several gates that each have to be lifted a certain amount to allow the pawl to move.

The super cheap 'zig-zag' key laminated locks are am examle of the simple lock.

don't pay attention to what they say about the cylindrical locks being pick-proof, a universal key can be thrown together in about 5 minutes, and will open nearly any of them you can find.

locks are one of those things that can get pretty fascinating.
I've seen a couple padlocks that took two keys to open, one that the key 'unlocked' a combination dial (without unlocking the wheel it would spin freely)
All three of those were old early 1900's, big and heavy locks, oddest thing is that both the double key types were brought in to me by people in different states to clean them up and make them workable so they could be used on lamps

Ken.

macona
11-22-2007, 02:45 AM
A universal key in the form of the tube from a Bic pen!

kendall
11-22-2007, 01:51 PM
no, that only works on the cheap ones.

Ken.