104 lines
5.1 KiB
Plaintext
104 lines
5.1 KiB
Plaintext
|
|
|
|
|
|
|
|
|
|
|
|
--------------------------------------------------------------------
|
|
TC PUBLICATIONS -- APRIL 29, 1991 -- "Master Combination Locks"
|
|
--------------------------------------------------------------------
|
|
|
|
MASTER COMBINATION LOCKS
|
|
|
|
Almost all combination locks, including safe locks, operate on
|
|
the same basic principle. The dial is turned to a preselected
|
|
series of numbers that line up the unlocking mechanism and allow the
|
|
lock to open. People always lose the combinations for these locks.
|
|
If you have a thorough knowledge of the construction of this
|
|
type of lock you can usually open them quite easily and determine
|
|
the combination. There are four methods commonly used to open
|
|
combination locks, I will briefly discuss all four.
|
|
The first method is called manipulation, which is a highly
|
|
skilled field of locksmithng that ver few are able to master. Safe
|
|
and combination lock manipulation is a specialized field of the
|
|
locksmith trade. The type of locks that you will usually run into
|
|
are the cheap inexpensive ones which aren't worth the time to
|
|
manipulate. Generally manipulation is not even a last resort;
|
|
generally manipulation is always ignored.
|
|
A common method of opening is to drill a small hole in the case
|
|
to trip the locking mechanism, or read the combination. Some locks
|
|
can be opened by rapping the case with a soft face hammer or wooden
|
|
mallet. Others can be opened by codes, but only if you have a code
|
|
book.
|
|
I highly suggest buying a master padlock and peeling the back
|
|
cover off of it to reveal the internal mechanisms. You should be
|
|
able to identify: the shackle, locking pawl, locking dog, and three
|
|
tumbler gates. Each manufacturer will have some variation of the
|
|
actual construction, however, they all operate in almost the same
|
|
manner.
|
|
|
|
DRILLING
|
|
Drill a hole approximately 1/16" in diameter. To find out
|
|
approximately where to drill, draw a line for the 'M' in Master on
|
|
the back of the lock. A straight line for the edge, through the
|
|
'M', and just missing the '.' in WIS on the other side. Now once
|
|
you have the holw drilled, take a pen light, and look in and read
|
|
the tumblers. Through the hole you should be able to see the
|
|
locking pawl and the tumbler gates. Line the tumbler gates up with
|
|
the locking pawl. Do this by first clearing the lock by turning the
|
|
dial knob at least two turns to the right, or clockwise as you face
|
|
the front side. Holding the lock in your left hand, continue
|
|
turning the dial clockwise slowly, and look through the hole you
|
|
drilled in the back. Now stop turning the dial when the gate of the
|
|
first tumbler lines up with the pawl. Now slowly turn the dial in
|
|
the opposite direction, notice the #2 or middle tumbler, does not
|
|
move at first. After one revolution, it will begin to turn.
|
|
Continue turning slowly until the gate of the #2 tumbler lines up
|
|
perfectly with the gate of the first tumbler. Next, reverse the
|
|
dial rotation and slowly turn it clockwise until the gate of the #3
|
|
tumbler lines up with the gates of the #1 and #2 tumblers. Now pull
|
|
out on the shackle and the lock will open if you line up the three
|
|
|
|
|
|
|
|
MASTER COMBINATION LOCKS Page 1
|
|
|
|
|
|
|
|
|
|
TC PUBLICATIONS
|
|
|
|
|
|
|
|
tumblers properly.
|
|
|
|
|
|
RAPPING
|
|
Sometimes you can open these locks by rapping them open by
|
|
hitting them with a soft face hammer or wooden mallet. A sudden
|
|
blow on the opposite side of the locking dog will sometimes depress
|
|
the locking spring and release the dog, allowing the shackle to come
|
|
out.
|
|
|
|
DRILLING METHOD #2 (MASTER)
|
|
On the back right hand side of the lock, draw a 3/8" line down
|
|
from where the shackle meets the lock case(inside of loop, not
|
|
outside!), then draw and 3/8" line at a 90 degree angle to that one.
|
|
Now, if you have drawn your lines right, you should be able to
|
|
drill right next to your pin-point created by the lines. NOTE:
|
|
This will destroy the lock, but it is a fail safe method of opening
|
|
and opening it fast.
|
|
|
|
|
|
CLOSING
|
|
I have seen many small files on the Master combination lock,
|
|
but all of them usually talked about the manipulation method.
|
|
Hopefully some of you out there will read this file and realize that
|
|
these methods really work. This file may be destributed freely, but
|
|
please don't re-write it and take credit for it when you don't have
|
|
any solid facts to back up the fact that you wrote it.
|
|
|
|
--------------------------------------------------------------------
|
|
TC PUBLICATIONS -- APRIL 29, 1991 -- "Master Combination Locks"
|
|
--------------------------------------------------------------------
|