The sun. [volume] (New York [N.Y.]) 1833-1916, 1910-06-12

the crack alongside the door and forcing
the door On. OF working through the
crack he could saw the bolts 4 aysfam
II overlapping hanRes and interlockinR
jamhs put "A s'op "a this practice
Then lock zpindles were attacked and
an effort made 10 drill them or drive them
IN Dr pun them out 80 as tn leave an open
ing through which the locks could h.
reachni This VAS quickly stopped by
q change 20 construction
Then CaWe What one expert on tho law
ful side terms the era n niiroglvcerins.
The drill again WAS brought into u-e where
the metal of the safe would admit. and
where the drill could not D. operated the
method Il -souping- was devised
Nv this method a cup ~ putty or similar
substance IL applied 60 the crack and IL
filed with uitroglvcerine The explosive
j. thus allowed 20 run In through the
crack and ~ reaches a point where its
explosion will be ~ sufficient force 20
drive the door on ~ hinges or A. least ~
knOck uut the bolts
b.; the safe makers knew u nitroglyc-
crime and ~ adartabiity even before the
burglars and heRan building a safe on
which the explosive can make little i'm
preston when used by any method yc'
devised
The door ~ the older safe and Il the
small safe which IL uzsi hy the average
tr1desWan. say, Is painted Even II the
maker has h"en unkiBd enough ~ Al the
door fairly olu-e all the veRRman has
- do j. tu -oripe m the uaiut and he
has "a crack ready for l.- Soup The
modern safe door not only ftz tighter
than the Old time maker dreamed 70 door
could 30 made ~ M hut ft- sfesl against
sie"I. th"n" is no painted surface 2" ~
scr4p"d ~
This fitting II the door 10 one ~ the most
important operations in safe coustr1Ir-
ton The door b. M hung that II closes
parallel with the janis which means that
there ~ no necessity Tor allowing closing
space. The sIrflra- thus brought to-
gether arr made 49, perfect as modern
machinery can make them tho l0Ur being
ground into place I'm addition the edges
- the door 10 into the jamh= on an angle
~ that when the door h. closed hv the
mechanical compressOrs on the outside
IL is wedged tightly against the jamhs
There is no crack NJ cr"ylc~ ~ any kind
20 admit even th" hquii soup The
favurite test for the tiRhtuesz - thez.
doors j. 20 arrange q sort - vat. ~ which
the front ~ the safe forms une side. and
% nm 10 with water The experiment
is continued FOR six DAYS and n AZ M. end
~ that time no moisture has made its
way into the safe the safe ls considered
tight
on. ~ the later IDEAS ~ safe building
i-that - rho round door This tho man.
ufirturrrs say D. best where the spare
about the vault Is sufficient Ia allow II 20
swing II necessarily h. larger than the
rectangular door The chief advantage
81 this door II that It's shape admits ~
ia bainR ground INTO place mpre tightly
aAs.ssr - rwrsgNHVF4 aF4HFIF - a
complex piece ~ mechanism. often con
tanning several thousand different pieces
each - which "A made accurate 20
the fhpugluith 81 an inCh. The doors
81 M. largest vaults rim no Ia nearly
two feet 100 thickness and a weight upward
~ twenty tons Tor the door alone IL not
uncommon
One II the biggest manufacturers -
safes in tho country was confronted
with o peculiar demand on the part u a
customer not long ago. The purchaser
feared that ~ massive a door ~ was
ulauned for the vault hc was having con-
-tuIctrd would he diflicult To- swing and IN
-iSts-i that hI- twelve vear-Old daugh-
tsr should hs able Ia open and close u.
Thu. condition WAS included IN the con
tract and the child made the test having
uu trouble In swinging the twenty one
ton door open and back agai n 10 is
place The hinges in a door - such
weight operate On hall bearings
The body ~ the vault itself is usually
built up ~ steel plates bound together
with screwz from the inside % the vault
~ that IN" screws cannot he reached
from the outside The plates themselves
Ir- - two Glasses, those ~ hard and
those NJ softer steel ST in alternately
The steel pf high tensile strength Ia
used tO resist No" effect ~ high explosives
while the other mrs great resisting power
against drilling IN N1tne cases q layer
~ twisted -t"rl liars isadded tOtho plates
on the inside ~ tho vault This network
- the strongest kind ~ steel will break
Guy drill that has survived the attack IN
tn ~ta'l plates and Also adds n the power
~ thee vi" Tor resisting explosives
Where the Outs'd" plates COME togather
~ form the angles and Corners n the safe
or vault massive angles u steel are welded
over The io'nt. the plates themselves first
being welded together The result h
-0Hi steel ho1 with tho door ~ the only
possible chance ~ an opening and that
door b. siE hours wgteTfiRhf Th.s bur
glaT. no h. ever NJ expert stands a poor
show against such construction methoda.
! The professional regulations Of the