88 
HOUSE AND GARDEN 
April, 1912 
Locks and their Uses 
A lock is as strong as its bolt—but its security is entirely dependent 
upon how W'eil its mechanism is protected against attack through the 
keyhole. 
If any one of a dozen keys will open your lock, of what use is its 
strong bolt? 
If the merest tyro and sneak thief can pick your lock in two minutes, 
of what use is your lock? 
These are the reasons why all the ingenuity of lockmaking has 
led, not in the direction of stronger locks, but in the search for 
a mechanism which would absolutely prevent the lock from being 
opened by any means save its own key. 
Warded Locks 
The simplest form of pro¬ 
tecting the lock mechanism is 
found in the warded lock. Pro¬ 
jections in the keyhole prevent 
the entrance of any key not 
having corresponding grooves 
in the key. h'urther projections 
cised, how'ever, not to choose too cheap a lock, as it will quickly be- 
come useless and have to be replaced. 
In case it is desired to have additional security, it is always very 
easy to add a Yale Cylinder Night Latch to a door. This is a form 
of Yale Cylinder Lock in which the bolt is automatically shot, thus 
possessing the advantage of not requiring the insertion of the key in 
order to lock it. . 
The Yale Cylinder Night Latch, in a wide variety of forms, is also 
frequently added to outside doors, kitchen doors, cellar doors or any 
door where access to the house might be made. The Yale Cylinder is 
also incorporated into even the most elaborate designs for door sets, 
Kcywaj's of Wnrded Locks 
inside the lock prevent the key 
from turning, unless it fits ex¬ 
actly, but the number of varia¬ 
tions practical in the shape of 
the key is so small that gen¬ 
erally one out of every four is 
a duplicate. 
The warded lock key of your 
next door neighbor is quite 
likeh' to fit one of your locks. 
Lever Tumbler Locks 
Then comes the lever tumbler 
lock in which a greater number 
of key changes and much great- 
A Yale Cylinder Night Latch 
on 
outside 
Interior of a Lever Tumbler Lock 
er security is obtained by using 
a number of flat tumblers. This 
type of lock is largely used for 
inside doors in residences, for 
which purpose it is well adapt¬ 
ed. It offers satisfactory se¬ 
curity against picking or acci¬ 
dental interchange of keys. 
Cylinder Locks 
Ihe first lock to offer an absolute key control and a perfectly pro¬ 
tected mechanism was the Yale Cylinder Lock, now known as the 
symbol of lock security throughout the civilized world. 
Locks and 
Hardware are 
so well known 
because they 
are so well 
made. 
Yale & Towne Mfg. Co. 
9 Murray St., New York 
Each Yale Cylinder Lock requires 
possibly open it, and no record exists 
where a sneak thief has succeeded 
in picking a Yale Cylinder Lock. 
For- the interior of your house, it 
does not matter much whether the 
key to the dining room will also un¬ 
lock the nursery door. For that rea¬ 
son interior doors in most houses 
are fitted with a good grade of lever- 
tumbler lock. Care should be exer- 
a different 
other can 
A Vale Cylinder cut open to show how the key 
when inserted sets the pins so the bolt may 
be throw’D 
such as are used 
entrance doors. 
There are Yale Cylinder 
Locks for sideboard drawers 
and cupboards, pantries, closets, 
bureaus and desks, for trunks 
and boxes. You will always 
find a Yale Cylinder Lock for 
V'our purpose. 
Padlocks 
The mechanism of the \ale 
Cylinder Lock is also found in 
padlock form, and many of the 
best automobiles are to-day 
completely equipped with Yale 
Cylinder Locks before they 
leave the works. 
Another great advantage 
offered by the Yale Cylinder 
Lock is found in the master 
key. You may have any num¬ 
ber of Yale Cylinder Locks, 
for each of which a different 
key is required by your serv- 
. l5 , or employees, and yet y 
may carry one key which will 
open every lock. 
This also does away with the 
necessity for carrying a huge 
bunch of keys, a service which 
is greatly appreciated bj' every 
man. 
It must be remembered that 
lock security is exactly what 
the words indicate. The or¬ 
dinary door may be battered 
in or broken from its hinges, 
but this is not the method pur¬ 
sued by sneak thieves and burglars. The success of their opera¬ 
tion depends entirely upon stealth and the absence of noise, which 
is sure to lead to their discovery. 
This is all the more reason why it is essential to have j-our outer 
doors protected by Yale Cylinder Locks. They cannot possibly be 
picked or false-keyed by a sneak thief. He is apt to give up the job 
in disgust the moment he sees the name “Yale” on the key plate of 
your door. That little word is in itself almost an insurance against 
theft. The thief knows only too well that the one way to get by a 
Yale Cylinder Lock is to break down the door, and to this he never 
resorts. 
Most helpful in the selection of locks and hardware of all kinds will 
be our little book entitled “Yale Hardware for Your Home.” W'e 
shall be glad to send you a copy free if y'ou will send us your name. 
iiHiiiii 
In writing to adrertisers please mention House and Garden. 
