Improvements in and relating to Locks.
Year: 1889

page_text: Date of Application, 14th Jan., 1889
Complete Specification Left, 12th Oct., 1889-Accepted, 30th Nov.,
1889
PROVISIONAL SPECIFICATION.
Improvements in and relating to Locks.
I, EDMOND DRAULLETTE, of Rue Chatean Landon Paris, in the Republic of
France, Fire Brigade Lieutenant, do hereby declare the nature of this invention to be
as follows:-
This invention relates to improvements in locks whereby doors, drawers, safes, &c.,
can be opened and closed by means of a handle operated by a key of small size whatever
may be the thickness of these doors, &c. The small key does not itself operate the
bolts, it serves to disengage from the thickness of the door a handle which by means
of the land can simultaneously operate several bolts with very little effect.
In carrying out the invention the apparatus is constructed of a box or case fixed in
the thickness of a door for example; within this box is a moveable handle working
with little friction. This handle is held in the box by a plate and by a flange which
Intter prevents the handle being completely withdrawn from the box.
In the thickness of the door at the four corners of the box are formed recesses;
in these recesses a bolt engages when the handle is pushed towards the interior of the
box to close the door.
The holt is operated by means of a combination of small strips or plates fixed in a
recess formed within the handle.
To operate the small strips, a small key is employed; this key is inserted in an
opening in the handle and turned a quarter of a revolution when the bolt passes
out of the recess; a spring immediately pushes out the handle and by turning this
handle the two ordinary bolts of the lock are operated. This is effected by means of
n spindle fixed on a plate forming part of the handle; the spindle engages in an
opening in a finger of the lock by means of which the two bolts are simultaneously
operated.
In some cases the handle which has just been described is combined with
another handle the whole placed at the centre of a door and not at the edge as in the
preceding case.
The mechanism as well as the operation of the first handle having already been
described it will be sufficient to describe the arrangement of the said handle with the
second handle. At the end of the rod is fixed a small pinion having four teeth;
this pinion gears with a rack on the end of the rod which connects the handles with
the lock.
The second handle, which is hollow, is toothed and engages with a rack formed
integrally with the other rack; two circular recesses formed in this handle-have for
object by means of a catch taking into the said recesses either to keep the gearing
on the second handle in the rack or to remove it therefrom according as it may be
desired to leave the door free to be opened, or so that it cannot be opened from the
inside. This rack forms the end of the rod which simultaneously operates the bolts of
the lock.
•
A small hole formed in the plato which encloses the arrangement allows of the small
key being introduced and the catch raised.
To close a door from the outside it is only necessary to push the first handle into
its recess; the bolt then enters the recess or notch, the small pinion leaves the rack
and passes into the hollow part of the second handle; consequently the movement
It will thus be seen that when
of this rack is independent of the lock-handle.
this lock-handle is forced into its recess the door can only be opened from the
outside by means of the small key which causes the handle to be pushed out.
If it is desired to prevent the door being opened from the inside, the catch is
raised, the second handle is drawn out and the catch allowed to drop into the second

page_text: notch; by pulling out this handle the teeth are disengaged from the rack which
consequently cannot be operated by the handle.
The lock-handle can operate several locks at a time where more than one lock is
employed as with certain safes.
Dated the 14th day of January 1889.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Locks.
I, EDMOND DRAULLETTE, of Rue Chateau Landon, Paris, in the Republic of
France, Fire Brigade Lieutenant, 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 :-
This invention relates to improvements in locks whereby doors, drawers, safes, etc.,
can be opened and closed by means of a handle operated by a koy of small size
whatever may be the thickness of those doors, etc. The small key does not itself
operate the bolts, it serves to disengage from a recess in the door a handle which can
then be grasped by the land and operated so as to simultaneously actuate several
bolts with very little effort.
In the accompanying drawing,
Figure 1 is a vertical section shewing the locking handle in its closed position or
the position which it occupies when located in its recess, the said handle being
arranged to directly actuate a lock on the edge of a door.
Figure 2 is a similar view but shewing the handle in its open position.
Figure 3 is a face view of the handle.
Figure 4 is an elevation shewing the interior mechanism of the said handle.
Figure 5 is an elevation of the key.
Figure 6 is an elevation showing the interior mechanism of the lock.
Fig. 7 is a section of an arrangement in which a locking handle and an inside
handle are placed in the middle of the door.
Figure 8 is a sectional elevation shewing the arrangement by means of which the
operation of the inside handle can be prevented.
Figure 9 is an elevation of the mechanism of the handle placed inside and in the
middle of a door for operating the two bolts of a lock.
In carrying out the invention (which I will first describe by reference to figures 1
to 6) the apparatus is constructed of a box or case a fixed in the thickness of a
door, for example; within this box is a movable handle 6 working with little
friction. The handle is held in the box a by a plate c and by a flange d,
which latter forms a stop to prevent the handle from being completely withdrawn
from the box.
In the thickness of the door at the four corners of the box a are formed recesses e
(figures 1, 2 and 4); in these recesses a bolt f engages when the handle is pushed
towards the interior of the box to close the door as shewn in figure 1. The bolt f is
operated by means of a combination of small strips or plates 9 placed in a recess
formed within the handle b.
To operate the small strips 9 when requiring to release the handle a small key
(figure 5) is employed; the key is inserted in an opening in the handle and turned
a quarter of a revolution, when the bolt passes out of the recess e; a spring i
immediately pushes out the handle b into the position shewn in figure 2 and by turning
this handle the two bolts of the lock A on the inner side of the door are operated.
This is effected by means of a spindle k fixed on a plate forming part of the handle;
the spindle k engages in a hole m in a finger n of the lock by means of which the
two bolts (figure 6) are simultaneously operated.
In some cases (as illustrated in figures 7, 8 and 9) the handle & which has just been

page_text: described is combined with another handle, the whole placed at the centre of a door
and not at the edge as in the preceding case.
The mechanism as well as the operation of the handle having already been
described it will be sufficient to describe the arrangement of the said handle with the
second handle o.
At the end of the spindle k is fixed a small pinion p having four teeth (figures 7
and 9); this pinion gears with a rack q on the end of the rod which connects the
handles with the lock W.
The handle ი,
which is hollow, is toothed at s and engages with a rack t formed
integral with the rack g; two circular grooves u formed in this handle have for object,
by means of a catch(figures 7 and 8) taking into the said grooves, either to keep
the teeth in the rack or to disengage them therefrom according as it may be desired
to leave the door free to be opened, or so that it cannot be opened from the inside.
This rack is situated at the end of the rod which simultaneously operates the two
bolts of the lock W. (figure 9).
r
A small hole z formed in the plate which encloses the mechanism allows of the
small key being introduced and the catch being thereby raised.
To close a door from the outside (the parts being in the position shewn in figures 7,
8 and 9) it is only necessary to push the handle b into its recess; the bolt then
enters the recesse and the small pinion p leaves the rack and passes into the
hollow part of the handle o; consequently the movement of this rack is independent
of the locking handle b. It will thus be seen that when this locking handle is
forced into its recess the door can only be opened from the outside by means of
the small key which causes the bandle to be pushed out.
If it is desired to prevent the door being opened from the inside, the catch n
is raised from the groove in which it is shewn in figure 7, the handle o is pulled
and the catch allowed to drop into the other groove; by pulling the handle o the
teeth saro disengaged from the rack which consequently cannot be operated by the
handle.
The locking handle as described and shewn in the drawings may be arranged
to simultaneously operate several locks as in the case of certain safes and strong
rooms.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
(1) A lock adapted to be operated by a movable handle, that is to say, a handle
which can be pushed into, withdrawn from, and turned freely in a box or case fitted
into a door, substantially as hereinbefore described.
(2) The application of the handle referred to in claim 1 directly to the lock described
with reference to figure 6, or the combination of such handle, placed in the middle of
a door with another handle (as illustrated in figure 7,) arranged to operate the two
bolts of a lock described with reference to figure 9.
(3) The improvements in and relating to locks, substantially as hereinbefore
described with reference to the accompanying drawings.
Dated the 12th day of October food.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.