Improvements in Railway-carriage Door Locks, partly applicable to other Locks.
Year: 1899

page_text: Date of Application, 12th Apr., 1899-Accepted, 20th May, 1899
Improvements in Railway-carriage Door Locks, partly applicable to
other Locks.
We, FELIX JONES and JOHN SLATER FOSTER, of the Firm of Jones and Foster,
39, Bloomsbury Street, Birmingham, in the County of Warwick, Railway Carriage
Furniture Manufacturers, and WILLIAM HENRY APPLEBY, of 21, High Street,
Bloxwich, Lock Manufacturer, do hereby declare the nature of our said invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
Our invention has for its object improvements in locks which are specially
applicable to railway carriage doors and which are simplified and more substantial
in construction and less liable for the various parts to become deranged.
In order that our invention may be clearly understood and more easily carried
into practical effect we have appended hereunto a double sized sheet of drawings
upon which we have illustrated an example of a railway carriage door lock.
Figúre is a view of our lock complete fitted in a railway carriage door.
Figure 2 is a view of our lock with the front plate removed showing the position
of the bolt when the door is closed.
Figure 3 is an end view of Figure 2.
Figure 4 is a similar view to Figure 2 showing the position of the bolt when
the door is open.
Figure 5 is an end view of the bolt or catch plate.
Figure 6 is an enlarged view of the lever which operates the bolt.
Figure 7 is an enlarged view of our new spring for locks.
In carrying our invention into practice we form the box or case A of our lock
in the usual manner and on the pivot a¹ we mount the lever B which is held in its
normal position by the spring S, one end of which is fixed in the slot the other
end bearing against the side of the box as clearly shewn at Figures 2 and 4.
This lever B is formed with the nose piece or catch 62 for retaining or holding the
bolt D in its unlocked position that is when the door is open as clearly shewn at
Figure 4. The bolt D is provided with the shoulders which form the axis for
this bolt to work upon and these shoulders d¹ take their bearing in holes formed
in the sides of the box or case A. The top edge of the bolt D is scolloped or
rounded out at to receive the rounded end or nose c¹ of the lever E which lever
is mounted on the pivot a and is held in its normal position by the spring or
springs S¹ one end or ends of which are fixed in the slot e the other end or ends
bearing against the side of the case or box A. The bolt D is formed with the
square hole to receive the spindle F which operates the bolt 1). It will easily
be seen that when the spindle F is turned in the direction of the arrow that the
nose piece formed on the end of the bolt which protrudes through the slot a³
in the end plate at will come in contact with the nose piece or catch 62 on the
lever B thereby raising this lever but as soon as the nose piece has passed the
catch 6 the lever B drops into its normal position by the action of the spring S

page_text: thus holding the bolt D up in the position it assumes when the door is open as
clearly shewn at Figure 4.
The socket plate H which is let into the side of the frame J in which the door K
fits is formed with the inclined slot h¹ as clearly shewn at Figure 5. This inclined
slot is arranged so that when the door is closed and the end 5 of the lever B,
which protrudes through the slot a in the end plate at and which is formed with
an inclined surface as clearly shewn at Figure 3, rides upon the lower surface of
this inclined slot thus raising the lever B and releasing the bolt D which is forced
down and held there by the lever E through the action of the spring or springs S¹
thereby locking the door as shewn at Figures 1 and 2.
Hitherto when it has been necessary to employ more than one spring for operat-
ing the lever or levers of a lock they have been formed so as to fit one within the
other and when putting the parts of the lock together it has been found difficult
to fit these springs in position. Now according to our invention we form two or
more of these springs from one piece of flat steel which we bend or fold into equal
lengths that is to say when forming two springs $3 as shewn at Figure.7 we bend
the steel at s so that one half fits into the other and when the steel has been bent
into the required shape it forms two springs united together at sit will be evident
that three or more such springs may be made from one piece of flat steel in a like
manner and that these springs are suitable for any kind of locks.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is;-
CLAIMS.
First: The improvements in locks consisting essentially in the lever such as E
pivoted at one end to the box or case A the other end being formed with a rounded
nose piece and bearing upon the bolt such as D in combination with the lever B
all arranged in the manner and for the purpose substantially as herein set forth
and as shewn upon the accompanying sheet of drawings.
Second: In railway carriage door locks the lever E for operating the bolt D
in combination with the spring or springs S₁ in the manner substantially as herein
set forth and as shewn upon the accompanying sheet of drawings.
Third:-Springs for railway carriage doors and other locks formed from one
piece of metal in the manner substantially as herein set forth and as shewn upon
the accompanying sheet of drawings.
Dated this 10th day of Anril 1800.
FELIX JONES.
JOHN SLATER FOSTER.
WILLIAM HENRY APPLEBY,
By George Barker,
.
Fellow of the Chartered Institute of Patent Agents,
Agent for Applicants, 77, Colmore Row, Birmingham.