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1994-07-17
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Sanctuary ----------------< The Lockpicking Series >--------------------- S
Sanctuar --------------------------------------------------------------- Sa
Sanctua ------------------------< Chapter 3 >-------------------------- San
Sanctu --------------------------------------------------------------- Sanc
Sanct -------------------< Written by Havok Halcyon >---------------- Sanct
Sanc --------------------------------------------------------------- Sanctu
San --------------< From the HELLFIRE Bulletin Board System >------ Sanctua
Sa --------------------------------------------------------------- Sanctuar
S ----------------------< And the City of Sanctuary >------------ Sanctuary
HELLFIRE BBS - 908-495-3926
------------
Sanctuary is always looking for new writers, dist. sites, and couriers
E-Mail either:
Red - Sysop of Hellfire, World Head Quarters of Sanctuary, or
Havok Halcyon - Chief Editor and Co-Founder of Sanctuary
if you are interested in becoming any of the above. Both people can be
reached on Hellfire BBS.
<:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:>
-=> FUTILE AND POINTLESS DISCLAIMER <=-
-=> <=-
-=> Yes, I've included yet another WONDERFUL disclaimer in <=-
-=> this new phile. Even though I think these things are <=-
-=> quite futile and pointless (see title), I have chosen <=-
-=> to put one in because I'm going to assume (like other <=-
-=> writers) that they serve SOME purpose. Even though by <=-
-=> the g'ments actions, it would appear that I am wrong. <=-
-=> So here goes.... Don't pick..uh..locks..yea, locks.. <=-
-=> Breaking and entering is VERY illegal, so don't do it <=-
-=> because you will risk years in prison and heavy fines <=-
-=> if you attempt it and are CAUGHT. The info contained <=-
-=> herein is for informational purposes ONLY so that you <=-
-=> can all better yourselves and become well rounded and <=-
-=> intelligent. NOT, I repeat, NOT so that you can have <=-
-=> the ability to break into things and steal stuff. OK? <=-
-=> <=-
<:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:><:>
PLEASE, feel free to distribute this phile all over the continental United
States as well as the rest of the world (If you're in that international
kinda mood). ...
Intro
-----
Within this brand new, (or real old phile, depending on when you
get/read it) we're gonna discuss part 5, Lever Tumbler Locks. Part 6,
which will involve Pin Tumbler Locks, like the locks used in car doors, was
supposed to be here, but was pushed back slightly due to schedule changes.
It WILL be in the next phile of the series however..
Since I won't be compiling any other works into this chapter, it will
be a bit smaller than the previous philes, but hopefully just as good. If
you missed the first two, they can be had from Hellfire, as well as any
other SANctuary philes. We'll start off with a little introduction to
Lever Locks... A word of warning. If you haven't read the first two
philes, I would recommend you reading them before this one, or at least
reading them sometime in the near future. I have written these philes in a
way so that people who have already read my older philes, do not have to
deal with re-reading things they already know.
----------
- PART 5 - Lever Tumbler Locks
----------
The next type of lock we will be covering in this series is going to
be the lever lock. Even though it is not seen too often, we wouldn't want
you to be dumbfounded the few times you do run into it. Technically, this
was the next lock developed after the warded lock, it was in fact made to
replace the warded lock, so you can assume that they are fairly alike.
Uses
----
A place where you WILL see this lock would be safety deposit boxes.
But, since it is incredibly hard to pick when it is being used as a lock on
a safety deposit box, most locksmith's use a "nose puller" to open the
lock. This involves screwing a sheet metal screw into the key way of the
box and pulling the door off the box. Some places where you will also find
lever locks would be older office equipment, chests, cabinets, luggage
locks, etc. Some early mortise locks are lever locks also.
Keyway
------
Lever locks have a unique look to them. They are a slot cut into the
face of a metal cylinder with a matching slot on the collar or the lock
cylinder.
---------
- -
- -
- [] [] <--- sometimes additional slots are cut
- [] - in the collar
- [] <--- Keyway
----[]---
Figure 1: Lever Lock Keyway View
This cylinder or barrel or thimble or nose rises above the mounting
surface, usually. It is unusual in the way that the face is free to rotate
even when the key is not inserted. The key, once inside the cylinder,
usually moves the boltwork directly, just like warded locks.
The Keys
--------
The keys that are used to open these locks are often called flat keys.
Why? Because that is exactly what they are. They are flat stamped keys
with no side warding cuts whatsoever. The one cut they have, called the
throat cut, is near the bow of the key. The key has varying rectangular
depths near the tip that move the retainers to their varied height in the
lock.
Time for Operation
------------------
As stated before, lever locks are much like disc tumbler locks. So,
as in disc locks, the disc is the varying heights mechanisms while in lever
locks it is the lever mechanism. Here the lever is moved to varying
heights against a spring by a key, and then the bolt stump is free to be
pushed through the aligned slots in the interior of levers from one cutout
area to another.
In a lever lock, the key engages the bolt just as it would disks in
disc lock. But in a lever lock, the key elevates the tumblers by rotation
not my being shoved into a lock like a disc tumbler (figures 2 &3).
__
| |__
| |__
_______________| |
________________________|
Figure 2: Key Blade (end of key) of a Lever Lock Key
__________________________________
| |
| __________ |<---(as you turn key, this entire lever
|___________| + |___________| moves up.)
Figure 3: Lever in a lever lock.
Notice the shape of the key end. By the way, with this type of lock,
the key end will always consist of rectangular cuts and no wedge profiles.
You would insert the key into the lock on its side so that it lies flat.
The small area marked with a plus (figure 3. The plus means nothing, it is
only a marker.) is where the key would be inserted into. (The lever,
figure 3, is inside the lock.) As you turn the key, you would lift up the
lever bar just as you would be lifting up a disk.
The cylinder itself holds the key at the proper height in relationship
to the levers and rotates the key on an axis. The tumblers will come in
stacks of two, three, all the way up to fifteen. Each tumbler having a
common pivot point and an individual spring. So when the key reaches is
TDC (top dead center) it lifts each tumbler to its correct height based on
the levels and depths of each key bitting as well as the levels of the
gates (the area cutout on the bottom of the lever). If you have been
following closely, you should be able to realize that this type of lock is
much the same as a disc but uses retangular cuts and levers instead of
wedge cuts and discs.
One small note to remember is that all lever l