IMPROVEMENTS IN LOCKS FOR RAILWAY AND OTHER CARRIAGE DOORS
Year: 1884

page_text: I, WILLIAM WILKES of Mill Lane Works Bloxwich in the County of Stafford
Railway Carriage Lock Manufacturer do hereby declare the nature of my Invention
for IMPROVEMENTS IN LOCKS FOR RAILWAY AND OTHER CARRIAGE DOORS to be as
follows:-
"
Railway Carriage door locks, to which this Invention refers, I call " Box-spring
locks, from the fact that two sides of the lock are enclosed or boxed up by the
spring. The bolts of the locks are actuated, or turned outward and inward by
force applied to the Handle, and the Bolt when turned outward and inward is held
or retained in the desired position by pressure from the spring.
In locks of this description it is at the present time, the practice to use one
spring in each.
It has been found that such springs do occasionally break, thereby causing
great danger to such persons or passengers, who shall or may be trusting to it for
their safety.
.
Now I propose by my Invention or Improvements, to construct a lock which
shall contain two or more, and my Invention may be briefly stated as follows:-
I propose to use two or more springs of about equal size, shape and strength,
these two or more springs shall be placed side by side, and shall together occupy
the same space, the same position, and perform the same duty as is now performed
by a single spring.
Each of my two or more springs shall be designed to possess sufficient strength
to retain the bolt in the required position, so that in the event of one of the
springs breaking, the second or other springs would still perform the requisite
duty.
My Invention is or consists of the use of two or more springs in the construction
of Railway Carriage.

page_text: I, WILLIAM WILKES of Mill Lane Works Bloxwich in the County of Stafford,
Railway Carriage Lock Manufacturer do hereby declare the nature of my invention
for "IMPROVEMENTS IN LOCKS FOR RAILWAY AND OTHER CARRIAGE DOORS and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
Railway carriage door locks to which this invention refers, I call "Box spring"
locks, from the fact that two sides of the lock are enclosed or boxed up by the
spring.
-
The bolts of the locks are actuated or turned outward and inward by force
applied to the handle, and the bolt when turned outward and inward is held or
retained in the desired position by pressure from the spring.
In lieu of the one spring which is ordinarily used in all locks of this description,
I propose to use two or more springs which shall lie side by side, so that in case
of either one or the other breaking, the others being of sufficient strength will
ensure the lock still remaining in action-a feature which I believe will supply a
long-felt want.
These springs may be applied to outside locks, or locks which are fixed upon the
outside of doors, as well as to locks which are morticed into the doors, and are
applicable to the commonest description of locks as well as those of superior
class.
r
REFERENCE TO DIAGRAMS,
Fig 1-Shews a lock which is to be fixed upon the outside of a railway carriage
door, and having curved springs A lying side by side.
Fig. 2 Is the side view of same.
Fig. 3. Is the staple.
Fig. 4. Shews a lock which is to be morticed into the door.
Fig 5. Is the back view of same.
Fig 6. Shews the springs which lie one upon the other.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is
The application in railway carriage door locks of two or more Box springs which
shall lie side by side substantially as described.
Dated this 21st day of October 1884.
WILLIAM WILKES.