Automatic Age

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