Improvements in or connected with Door or other Looks.
Year: 1899

page_text: Date of Application, 28th Oct., 1899
Complete Specification Left, 22nd Dec., 1899- Accepted, 10th Feb., 1900
Improvements in or connected with Door or other Looks.
I, MAXIME EUGÈNE LORME, of 9, Bread Street Hill, in the City of London,
Merchant, do hereby declare the nature of this invention, a communication to me
from abroad by Tiraid Decayeux, of Escarbotin, in the Department of the Somme,
in the Republic of Fiance, Manufacturer to be as followe:-
The invention has for its object to provide a double fronted stock or box lock
of the latch lock type which may be placed in any situation according to requie-
ments and so as to work to the right on to the left.
This lock is characterised by the complete symmetry of the two sides of the
box the absence of a bevel or incline on the bolt, the application of a bevel or
incline to the staking plate or staple and the combination of various internal
mechanical parts.
It is also characterised by a new form of adjustable escutcheon which will
adapt itself to doors of variable thickness.
The lock according to one arrangement comprises essentially an exterior box
formed in two parts which must be identical in outline on account of the method
of joining the same.
This box is provided with two openings on each face two of which are intended
for the passage of fixing screws, the third hole accommodates a hollow drum
or barrel which carries an offset or driver in the square hole of which barrel engages
the spindle of the handle by means of which the bolt is retracted, the fourth
hole is reserved for the passage of the key of the locking device which allows
the bolt to be locked in the closed position of the door
The openings traverse bosses formed on the box concentric with the outline
thereof
The two parts of the box are guided together by means of two steady pins or
studs and aie forced together by the aid of one or more screws
In the central part of the box slides the mam bolt unprovided with an inclined
oi bevelled end that is formed square and presenting simply a slight rounding on
its extreme edges
A spring mounted on a square stud or spindle fixed on one half of the box acts
in a constant manner on the main bolt in such a direction as to project it from
the box
The main bolt is operated by means of an arm, lever, offset or driver fixed with
tue spring drum
The latter is subjected to the action of a strong spring fixed on the same pillar
as the other sping and which acts in such a manner as to energetically tuin or
aise the knob on handle of the spindle when it is engaged in the square hole of
the spring drum of the driver.
In order to allow the main bolt to be locked in the closed position of the door
a small auxilliary lock is placed in the upper part of the box the auxilliary bolt of

page_text: which comes into vertical engagement with a corresponding mortise or recess of
the main bolt of the lock.
This small auxilliary lock is enclosed within a box and the auxiliary bolt is
guided at its upper part by a pillar and at its lower part by a column and the wall
of the box
This auxiliary bolt is acted upon by the aid of a key bit which must correspond
to the profile of one or several tumblers pivoted on the pillar.
The two entrances to this small lock are provided with tubular guides which
occupy corresponding openings of the box
In order to fit the lock to a door it is necessary to form in the door for the
passage of the spindle of the knob or handle and the locking key two holes corre-
sponding with the bosses or projections or the lock may be placed on one side of
the door and the lock is fixed to the wood by means of two screws placed through
the holes provided for that purpose.
In consequence of the symmetrical shape of the exterior of the box and of
the arrangement of the bolt, the lock may be applied to either a right or left
hand door.
in another arrangement of the device the mechanism above described for locking
the bolt is dispensed with
The stuking plate or staple destined to receive the bolt of the lock is provided
with an inclined surface compelling the bolt to shoot back when the door is closed
and this inclined surface may be formed in several ways
For example the striking plate or staple may be provided in front with a
conical projection fixed thereto by means of a screw
This stinking plate or staple is symmetric in shape being provided with double
inclines and consequently can be fixed to the left on night as occasion demands
According to another example the striking plate or staple is provided with a
Fingle inclined plane and can also be placed in such a position that it will act
to the left on to the right
According to a further improvement the escutcheon of the lock is so constructed
that it will allow of being easily fitted to doors of different thickness
The escutcheon is formed of a plate and a tube fixed with one another.
This tube at its inner end and for a short distance therefiom is formed of a
reduced outside diameter
This reduced part engages and more or less enters into the tubular barrel of the
lock according to the thickness of the door
As a modification of this device the tube is formed seperate from the plate and
slides through an aperture in the latter the projection of the tube being regulated
according to the thickness of the door and upon which the plate 18 adjusted
or fixed by means of a set screw
The light is reserved to modify the forms, materials, and dimensions of the
different parts constituting the improved lock provided that their action and
relative ai angement remain as above specified
Dated this 28th day of October 1899
improvements in or connected with Door or other Locks.
I, MAXIME EUGENF LORME, of 9, Bread Street Hill, in the City of London,
Merchant, do hereby declare the nature of this invention a communication to me

page_text: from abroad by Tiraid Decayeux, of Escarbotin, in the Department of the Somme,
in the Republic of France, Manufacturer, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
The invention has for its object to provide a double fronted stock or box lock
of the latch lock type which may be placed in any situation according to require-
ments and so as to work to the right or to the left
This lock is characterised by the complete symmetry of the two sides of the
box the absence of a bevel or incline on the bolt, the application of a bevel or
incline to the striking plate or staple and the combination of various internal
mechanical parts
it is also characterised by a new form of adjustable escutcheon which will
odant itself to doors of variable thicknesя
And in order that the said invention may be clearly understood and readily
carried into effect I will proceed aided by the accompanying drawings fully to
describe the same
DESCRIPTION OF THE DRAWINGS
Figure 1 is a front elevation of a lock constructed according to the present
Invention and showing the main bolt projected
Figure 2 is a similar view with part of the box or case removed
Figure 3 is a vertical transverse section taken on the line 1-1 of Figure 1
Figure 4 is a font view of the striking plate or staple employed in connection
with the lock
Figure 5 is a longitudinal section taken on the line 2-2 of Figure 4
Figure 6 is a front view of a striking plate on staple illustrating a modification.
Figure 7 is a front view of the escutcheon employed in connection with the
lock
Figure 8 is a vertical transverse section thereof taken on the line 3-3 of
Figure 7
Figure 9 is a similar view to Figure 8 illustrating a modification and
Figure 10 is a similar view to Figure 2 illustrating a modified form of lock and
showing the bolt retiacted
In the several figures like parts are indicated by similar letters of reference
Referring to Figures 1 to 3, a represents the box or case of the lock which is
formed of two equal parts having a line of junction centrally and longitudinally
of the lock and these two parts are formed indentical in outline in consequence of
the method of joining the same
The box a is provided with two holes al concentric with the outline thereof
and intended for the passage of fixing screws and these holes are formed with
countersinks at both ends to receive the heads of the fixing screws so that said
screws may be inserted from either end according to which face of the lock is
placed away from the door
Above the lower screw holes a¹ each part of the box or case is formed with an
apertured boss a for the purpose hereinafter described and above that with a
boss a provided with a keyhole therein for the passage of the key of the locking
device which permits the main bolt to be locked in the closed position of the
door and to which reference will be made later on and these bosses and openings are
concentric with the general outline of the hox a
The two parts of the box a are guided together by means of steady pins or
studs a' and they are fixed and held together by the aid of screws as
Within the bosses a ia mounted by its reduced ends a hollow dium or barrel b
the large diameter of which at 1 takes a beaung against the inner faces of the
two parts of the case and the drum or barrel b carries an offset or driver which
actuates the main holt e as hereinafter described and the hole 6 through the drum
or barrel is formed square to receive the correspondingly shaped spindle of the
handle by means of which the main bolt e 18 retracted.

page_text: The boss a is at the centre thereof provided with tubular guides a in which
slides tha main bolt c which is formed square and unprovided with the usual
inclined or bevelled end to act in conjunction with the striking plate or staple
but the end of the bolte is formed square and presents merely a slight rounding
on its extreme edges
In order to project the main bolt from the box or case a a spring is coiled
around and by one end fixed to a square stud fixed in a recess e¹ in the main
bolte whilst its other end engages a stud a fixed with one part of the case a and the
spring is thus caused to act in a constant manner upon the main bolt in such
a direction as to project it from the box
It will be obvious that the spring might be carried by a stud such as a' upon
the box and by its free end act against the stud e but the arrangement previously
described is the preferred one
In order to retract the main bolt the end of the offset or diver b³ works in
the recess c¹ of the holt cand by its facet 6* 18 adapted to engage the rear, wall of
said necess when the handle of the spindle (not shown) fitting the square hole b
of the dium is turned in the required direction, the extent of motion of the bolt o
being limited by a stud or projection, and this retracted position of the parts may
be seen on reference to Figure 10
1B
The drum bis subjected to the action of a strong spring + which is coiled around
the same and at one end is fixed thereto whilst its other end is fixed with the stud
or pillar and the office of this spring is to forcibly tuin on raise to its normal
position the knob o handle of the operating spindle which passes through the
square hole of the dumb when the further rotation of the parts is arrested by
the end of the offset or dive b³ coming against the case or box a adjacent to the
guide a
In order to enable the main bolt e to be locked when projected in the closed
position of the door a small auxiliary lock is placed in the upper part of the box a
and consists of a bolt d adapted to come into vertical engagement with a corre-
sponding mortice or recess in the main bolt c
The auxiliary bolt d is at its upper part slotted on forked to engage a stud or
pillai fixed with the box a and by which it is guided in its movements whilst
at its lower end it is guided by a column on stud and the wall of the box a
and the auxiliar bolt is adapted to he acted upon by a key bit which must
correspond with the profile of one or several tumbles or levers di pirotted on the
pilla and adapted to engage the pin on stud on the bolt d
The bosses a on each part of the box a in which are provided the keyholes of
the auxiliary lock are formed of considerable depth so that the keyholes form
tubular guides to the key
In order to fit the lock to a door it is necessair to form in the door, for the
passage of the spindle of the knob or handle, which occupies the square hole b³,
and the key of the auxiliary lock from the outside of the door two holes coure-
sponding with the bosses or projections a² a³, or the lock may be arranged to
operate from one side only of the door in which case simple recesses would be pro-
vided in the door to receive said bosses and the lock 19 in either case fixed to the
wood by means of screws passed through the holes a¹
In consequence of the symmetrical shape of the exterior of the box a and of the
arrangement of the main bolt e the lock may be applied to either a right or left
hand dooi
C
In the examples given at Figures 1 to 6 which represent the stinking plate or
staple of the lock said striking plate or staple e which is provided with a socket e
intended to receive the bolt of the lock is formed with an mclined surface
against which the bolt stakes and which compels the bolt to shoot back or retue
when the door is closed and the incline may if deed be formed separate from
and fixed with the staple by means of a screw et as indicated at Figure 6 the incline
being provided with a shoulder e³ to engage a corresponding ecess in the staple
so as to steady the same and prevent it turning

page_text: The inclined face of the striking plate or staple may if desired take a
1ounded or conical shape and nught be in the form of a quarter of a sphere
although a more gradual 11se is preferable
By reason of the striking plate or staple e being symmetrical in shape it can be
fixed to the left or night and utilized for either a left or right hand door as
occasion demands
In the example given at Figures 7 to 9 is shown the escutcheon of the loch
which is constructed in such manner that it will allow of being easily fitted to doois
of different thickness.
According to the aangement shown at Figures 7 and 8 the escutcheon 15
formed of a centrally apertured plate with which is formed or fixed a tubular
key hole guide or cannon f provided with a longitudinal slot f² to receive the key
bit and at its inne end for a short distance exteriorly formed of a reduced
diameter which reduced pait engages and more or less enteis into the tubulai
boss a3 according to the thickness of the door
At Figure 9 a modification of this device is shown in which the tube or cannon f¹
is formed separate from the plate f and slides though the central aperture of the
latter the projection of the tube f being regulated according to the thickness
of the dooi to which the plate is fixed by means of a set screw f³ screwing
through a threaded hole in a boss ft formed with the plate f and impinging on the
tube f.
In the example given at Figure 10 which represents a lock with its bolt cm a
ietiacted position the auxiliary bolt d and co-acting mechanism for locking the
main bolt are dispensed with and the shape and dimensions of the box oi case a
are modified accordingly
The night is reserved to modify the forms materials and dimensions of the various
parts constituting the improved lock provided that then action and relative
allangement iemain as above specified
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
-
1. A stock lock for placing in a position to act either to the right or to the left,
by diawing or pushing comprising a box the symmetrical ends of which are pio-
vided with bosses or projections around the key holes, a bolt unprovided with
bevels also symmetine on its vertical faces, a spring driver provided with a square
hole for carving the door handle, a recoil spring to the bolt, a recoil spring to the
driver, in combination with a small locking device, placed in the upper part of the
box, the bolt of which, worked by means of a key is moveable vei tically so as to
engage and lock the main bolt of the lock in its projected position substantially
as herein shown and described with respect to liguies 1, 2 and 3
2 In a stock lock of the character referred to in Claim 1, the combination of a
box having symmetrical ends with symmetrical bosses or projections, of a bolt
unprovided with bevels, of a spring diver with a square hole, and of recoil springs
to the bolt and the diver, the whole forming a loch which may be so situated as
to act to the night or to the left by diawing or pushing but without locking
mechanism substantially as herein shown and described with respect to Figure 10.
3 In a stock lock of the character referred to in Claims 1 and 2 the combina-
tion with the lock of a staple provided with a conical or inclined surface destined
to make the unbevelled bolt of the lock recoil or retract when the door is closed
substantially as herein shown and described with respect to Figures 4, 5 and 6.
4. In a stock lock of the character referred to in Claims 1 and 2, the combina-
tion with the lock of an escutcheon having a fixed keyhole guide or cannon the
extremity of which is of such a diameter that it may engage more or less the
exterior keyhole of the lock according to the thickness of the door substantially as
helen shown and described with respect to Figures 7 and 8.
5. In a stock lock of the character referred to in Claims 1 and 2 the combina-

page_text: tion with the lock of an escutcheon having a moveable keyhole guide or cannon
which can be fixed by the aid of a set screw in variable positions according to the
tluckness of the door substantially as herein shown and described with respect to
Figure 9,
Dated this 22nd day of Decembar 1800
WHITE & WOODINGTON,
Roonis 221-225 Bukbeck Bank Chambers,
Southampton Buildings, London, Agents