An Improved Railway Carriage Door Lock.
Year: 1895

page_text: Date of Application, 5th Dec., 1895
Complete Specification Left, 3rd Sept., 1896-Accepted, 14th Nov., 1896
An Improved Railway Carriage Door Lock.
CHARLES EDWARD PERCY GABRIEL trading as Gabriel & Co. 4 and 5 A. B. Row
Birmingham Cabinet and General Brassfounder do hereby declare the nature of
this invention to be as follows:-
The advantages of this lock over other carriage door locks are:-That it is
entirely dust-proof, durable, safe, and not complicated. The lock consists of a
brass shield, and plate bolt tumbler spring action centre-locking and two self-
acting springs. This lock has a double action with one bolt this acts direct through
the lock face in both cases thus enabling the lock to be entirely dust-proof. When
the door handle is turned to the right, and in a horizontal position the tumble is at
right angles to the spring action bar, the bolt projects through the lock face of
an inch, and is then locked and remains in that position by aid of the centre
locking spring pressing the spring action bar against tumbler. When the door
handle stands at an angle of 45 degrees to the right the tumbler is parallel with
the spring action bar the bolt projects of an inch through the lock face and it is
then self-acting, and independant of the centre locking spring through the bolt
coming in contact with the self acting springs. When the door handle is turned
to the left until the bolt stands clear of the lock-face the bottom part of tumble
acts on the spring action bar and compresses the centre locking spring also the top
part of tumbler acts on the bolt and causes the two self-acting springs to be
compressed at the same time and it is then unlocked.
Dated this Fourth day of December 1896.
CHARLES EDWARD PERCY GABRIEL.
An improved Railway Carriage Door LOCK.
1, CHARLES EDWARD PERCY GABRIEL trading as Gabriel and Company,
4 and 5 A. B. Row, Birmingham, Cabinet and General Brassfounder, do hereby
declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :-
The lock consists of a brass shield and plate, bolt, tumbler, spring action, centre
locking and two self acting springs. This lock has a double action with one bolt,
this acts direct through the lock face in both cases thus enabling the lock to be
entirely dust proof. When the door handle is turned to the right and in a hori-
zontal position the tumbler is at right angles to the spring action bar the bolt
projects through the lock face of an inch and is then locked and remains in that
position by aid of the centre locking spring pressing the spring action bar against
tumbler. When the door handle stands at an angle of 45 degrees to the right,
the tumbler is parallel with the spring action bar, the bolt projects of an inch
through the lock face and it is then self acting and independent of the centre
locking spring through the bolt coming in contact with the self acting springs.
1 Dia 21

page_text: When the door handle is turned to the left until the bolt stands clear of the
lock face the bottom part of tumble acts on the spring action bar and compresses
the centre locking spring also the top part of tumbler acts on the bolt and causes
the two self acting springs to be compressed at the same time and it is then
unlocked.
In order to make more clear this my invention I have appended hereunto an
illustrative drawing upon which are figures and numbers of reference, similar
numbers referring throughout the several views to the same thing or part.
In each of the views the cover plate is removed so as to exhibit the mechanism
of the lock.
Fig. 1 shows the lock in its shot and locked position.
Fig. 2 shows the lock in its unlocked but partly shot position, in which the door
may be closed and automatically latched.
Fig. 3 shows the bolt drawn back or unfastened ready for opening the door..
Fig. 4 is a detailed sectional view on line A-B of Fig. 2 showing the bevilled
nose of the bolt, and also the striking plate.
6 is the shield or case in which the various parts are fitted and act. 7, is the
lock face. 8, is the bolt. 9 is the bolt tumbler. 10 is the centre locking bar
spring. 12, 12 are the two side springs which control the self acting motion of the
bolt. 13 is the striking plate.
It will therefore be seen on referring to Fig. 1 that when the handle (not
shown) which operates the tumbler 9 by means of the square hole 14-is turned
to the right, the tumbler has pushed the bolt 8 outwards to it fullest extent, and by
reason of its (the tumbler's) horizontal position the bolt cannot be pushed back-
wards and is therefore locked. Any tendency of the tumbler 9 to move around
is checked by the locking bar 10 being pressed forward by the spring 11 upon
the flat 15 upon the tumbler. In this operation the springs 12, 12 are practically
idle.
By now turning the tumbler backwards towards the left as seen in Fig. 2 the
bar 10 now presses against the flat 16 upon the tumbler, and holds the latter in
that position. In this position the ends 17, 17 of the bolt 8 are touching the
springs 12, 12; hence if the door is closed-independently of turning the handle-
when the bevilled surface 18 of the bolt strikes against the plate 13, the said bolt
is forced inwards and compresses the springs 12, 12, until the bolt can shoot its
way into the slot in the striking plate. Or the bolt may be withdrawn by turning
the tumbler to the left, as shown in Fig. 3.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
:-
1. In a door lock the combination with the bolt 8, and tumbler 9 having flats 15
and 16 and bar 10, of the springs 11, and 12, 12, constructed and operating
substantially as set forth and shown upon the drawings.
2. In a door lock the general combination and arrangement of the parts
constituting this my improved lock all substantially as set forth and shown upon
the drawings.
Dated this 2nd day of September 1896.
CHARLES T. POWELL,
12 Cherry Street, Birmingham, Applicant's Agent.