Full Protection
CHICAGO Locks
ACE
t h e
Sectional View of
Tumbler Mechanism
LOCK
VER a year ago Chicago Lock
Company pioneered the new
e
Principles of lock construction
LOr£iVely fea-tured in the ACE
'-'K. Today it is regularly used by
Manufacturers of Underwriters’
Automobile Safety Locks,
com ln
Chicago Area, insurance
fate^an^e‘s a^ow 2 0 % off their usual
S a J? 011 theft insurance when ACE
^TY locks are installed.
O
Lgoj •
coin machine builders now
locks as standard equip-
sistjJ ^Pe,rators everywhere are in-
pu * 011 ACE locks for replacement
oaft °8es% It prevents dishonest lo-
in g »
owners from frequently “Milk-
•—a gQe’ CCish boxes at 2 o’clock A. M.
^an tiUrce'
^oss ^ar more serious
le °ne-shot professional thief.
Its Hgyv f
the Apr t e cylindrical key makes
It c ' LOCK positively thief proof.
Ca ^e drilled or sheared open
as
pic^ed within the lim-
°ratoriG
Underwriters’ Lab-
every .®* It is readily adaptable to
^e. t*eq .UaJ^on where cylinder locks
^ices
Write for specifications,
complete information.
ne ^ A p p N E R S — ask about the
Automobile Door Lock!
No. 4019
C
No. 4032
Dimension A 13/16"
1
SIZE — % In. diameter and
• 15/16 in. length.
0
D R ILL PROOF— Ace o y lin -
d e r has hardened steel shell
and hardened steel center.
Z .
„
>5 *
No. 551CX
Dimension
A = l"
SHEAR
PROOF — Steel
center p lug has no center
key s lo t, and is a tta che d
to in n e r brass plug w ith
safety shear brake p in .
4
5
•
•
PIC K PROOF — The Ace
Lock has passed the severe
picking test, and cannot be
pioked within the timo limit
as set by the Underwriters’
Laboratories.
TUM BLERS — Seven tum-
biers located In a circle
around plug, some mush
room or spool type, making
it very difficult If .possible
to pick. Tumblers will snap
into Place at every eighth
turn ot lock, requiring four
picking operations If one-
half turn is accomplished.
6
7
KEY—Sturdy and vory diffl-
• cult to duplicato. Lock can
be made so key is remov
able when unlocked, in most
any desired po«ition.
K E Y C H A N G E S — Aoe
* cyiindor has sevon b r a s s
t u m b le r s , all working In
brass w it h seven dopths,
giving unlimited key changes.
Listed under U N D E R W R IT
ERS’ LABORATORIES Re-
oxamination Service.
Look F or The
R O U N D KEY
L o c k c o m p a n y
Ven u e .
h i c a g o
L O C K S are
used extensively
by a ll le a d in g
coin m a c h in e
m an ufac ture rs,
yet w ith th e ir
alm ost in f in it e
num ber of se
cret-coded key-
changes, fraudu-
1 e n t duplication
is a practical im
p o s s ib ility . All
code-numbers are
kept secret on
locks for coin
machines, and the
design and engi
neering principle
of the lock per
mits a variety of
key - changes al
m ost b e y o n d
h um an compre
hension.
--------------- —
Los Angeles Office
R O L A N D E. LO O P
815
E.
Washington
St.
h ttp: //www. a r6ad e-muse u m. co