Improvements in Locks, and in Electric Signalling Apparatus for Use in connection therewith.
Year: 1895

page_text: Date of Application, 24th May, 1895
Complete Specification Left, 24th Feb., 1896-Accepted, 24th May, 1896
PROVISIONAL SPECIFICATION.
Improvements in Locks, and in Electric Signalling Apparatus for
Use in connection therewith.
I LOUIS DEFERT, of 150 Rue du Temple, Paris, in the Republic of France,
Police Commissary's Secretary, do hereby declare the nature of this invention to
be as follows:-
This invention for an improved electric lock has for its object a lock with an
electric staple producing signals at a distance by means of a tablet without replacing
button.
These two parts (lock and staple) combined signal by means of any suitable
alarm.
ist. The entrance and departure of a resident, by the opening or closing of a
double circuit and by physical evidence in the displacement of an electric shutter,
an automatic electrical indication at a great distance;
2nd. The introduction of a false key or foreign substances into the lock, made
impossible and announced-complete unpickability;
3rd. Putting in operation the alarm signals when burglary takes place by
bearing pushing crowbar &c.; whether these attempts are made on the doors or
windows or on the furniture;
4th. Preventing the electric conducting wires being cut without putting alarm
signals in operation.
The lock comprises an ordinary box but carries inside three bolts. One bolt is
enclosed in the box by a metallic plate which prevents this latter being picked
through the key hole. Another bolt partially covered with insulating material
announces the entrance or exit of the resident, while another bolt with two holes
is the only one which is closed from the inside and without carrying with it the
second mentioned bolt, whilst these bolts open and close together, but from the
outside only, carried one with the other by means of a tenon sliding in a groove of
the upper lever. The last mentioned bolt carries in the direction of its action a
copper addition completely insulated from the bolt and against which rests a contact
also insulated from the lock this latter carries two pieces the projections on which
correspond to the wards of the key. These projections could of course be placed
differently and have any desired shape.
This lock as just described is completed by a staple with independent base plate
acting as a commutator. The staple proper necessarily presents three openings
corresponding to the three bolts, it carries two metallic surfaces which correspond
to the break buttons forming a part of a base plate. These buttons are spring
mounted and bear on the surfaces of the staple; in the case of a separation, no
matter how minute it may be, of this latter, the buttons which were held back,
bear against contacts which cause an alarm.
The said base plate carries furthermore contacts corresponding to the entrance
bolt and which sends a current to all the exits, doors, windows and furniture when
the bolt bears thereon. This plate, as also the contacts, receive the necessary
currents through wires supplied by any battery. The arrangement of these
contacts is not absolute, these latter may indeed be fitted in the staple itself.
An indicating tablet gives the entrance and exit of a resident by means of a
bell or any other alarm, either at a short or long distance, at the same time that it
actuates a rotating disc, pivoted or oscillating about an axis and the position or
ID 21

page_text: colour of which is as agreed and corresponds either to the presence or absence of
the resident.
This arrangement consists of an electro magnet which attracts its armature
which is connected by a metallic wire to a ratchet lever with counterweight which
takes up one tooth on a ratchet. This ratchet is keyed on the same spindle as a
toothed wheel gearing into a pinion on the axis of which is fitted a disc; this latter
is divided into four parts of two different colours one of which indicates the
presence and the other the absence of the resident.
Dated this 24th day of May 1895
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.
Improvements in Locks, and in Electric Signalling Apparatus for
Use in connection therewith.
I LOUIS DEFERT, of 150 Rue du Temple, Paris, in the Republic of France,
Police Commissary's Secretary, 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 for improvements in locks and in electric signalling apparatus for
use in connection therewith, has for its object a lock with an electric staple
producing signals at a distance by means of a tablet without replacing button.
These two parts (lock and staple) combined, signal by means of any suitable
alarm―
1st. The entrance and departure of a resident by the opening or closing of a
double circuit and by physical evidence in the displacement of an electric shutter ;
an automatic electrical indication at a great distance.
2. The introduction of a false key or foreign substances into the lock made
impossible and announced; complete unpickability.
3. Putting in operation the alarm signals when burglary takes place by bearing,
pushing, crowbar &c. whether these attempts are made on the doors or windows or
on the furniture.
4. Preventing the electric conducting wires being cut without putting alarm
signals in operation.
Referring to the accompanying drawings:
Fig. 1 is an elevation showing the interior of the lock.
Fig. 2 is an elevation of the two upper bolts.
Fig. 3 is an elevation and plan of a base plate used in connection with the staple
for making contact with the bolts.
Figs. 4 and 5 are elevation and plan respectively of an indicator arrangement.
Fig. 6 is an indicating tablet.
Fig. 7 is a part elevation of the lock staple.
The upper bolt A, only acting when it is controlled from the outside by the
proper key acting on it, at the same time as on the central bolt B, by means of the
projections h, ¹ (Fig. 2) of the plate h' attached thereto.
In any one of these movements the end of the bolt A, which is partially
covered on its lower and upper surfaces with an insulating material a (Figs. 1
and 2) completes an electric circuit by its contacts with the contact pieces e, e
connected to the spring contact plate d and e² connected to plate D all arranged
on the special contact carrying plate D (Fig. 3) independent of the staple and
fixed under this latter on the door jamb.
The said contact carrying plate D (Fig. 3) is permanently connected to one
pole of an electric battery and carries the insulated spring contact plate d' whose

page_text: contacts d³ are normally kept open by the pressure of buttons or studs d', of
insulating material, which rest on the projections d of the staple, the said contact
plate D being connected to the remaining pole of the said battery. The contact f
is connected to plate D while contact is insulated therefrom and connected to
the spring contact plate d³. A gong or other signalling device is placed in the
battery line to give an alarm on the closing the circuit.
From the outside, the bolt A is withdrawn, inside the lock, at the same time
as B, by the key acting on projections and h³. From the interior, and in the
same case, the key acts simultaneously on the superposed projections i, of the
plates and h forming part of the double turn bolts A and B.
The bolt B is actuated either from the inside or the outside by the key and
through the intermediation of the projections formed on the plate forming part
thereof. This bolt carries, on the outer side, a metal plate c insulated by ebonite
or other insulating material c^. On this plate c rests a contact c¹ (Fig. 1) forming
part of a metal piece k completely insulated from the mechanism and the lock
casing by the insulating block k¹ and on which are fixed teeth or projections c³ ³
corresponding with the projections and depressions of the key bit. This arrange-
ment is made in order to signal the insertion of false keys which would necessarily
make contact with the insulated projections ce on the one part and with the
barrel pin I and the casing on the other part and thereby complete the electric
circuit through plate D of the staple (Fig. 3) by the contacts ff, the one f resting
on the insulated part c and the other f resting on the bolt B.
The third bolt or spring latch C has no influence on the alarm or signalling
parts; it is however characterised by its unpickability, a result obtained by its
isolation in the lower part of the lock by means of the fixed metal division plate D
(Fig. 1) preventing the approach of false keys or pick locks which might be
introduced into the body of the lock. This bolt, which is constantly urged into
into the closing or projecting position by a spring D¹, is opened from inside by the
knob D' and from the outside by the key, which acts on an elbow lever / pivotted'
at to the plate * of the bolt B, the lower arm of the lever engaging in the
rod m which connects the bolt to the knob D'.
In the annexed drawing (Fig. 1) o is the pivot about which oscillate the tumbler
levers of having opposing springs forcing them continuously against the studs p p²,
the stud p being solid with the plate h* and p¹ being solid with the plate h³.
The two plates h³ and h' are guided in thin rectilineal movement by a stud b
rivetted to the casing and which engages in a groove cut in each of these plates.
In case of forcing or a slight separation, made by any means whatever, and no
matter how slight, of the door jamb and the staple (this latter being held back by
the bolts) the buttons d' would be caused to leave the surfaces d and consequently
the circuit of the electric current would be completed through contacts d', putting
in action the alarm adopted.
It will be understood that the various parts of the lock, as also those of the
plate D of the staple, are suitably arranged, either in insulation or in contact, in
order to complete the at the right moment. This arrangement may be combined
with windows or with any method of closing doors, drawers &c. &c.
Figs. 4, 5 and 6 in the annexed drawings show as an example an arrangement of
indicating tablet, giving the entrance and exit of a resident by means of a bell or
any other alarm, either at a short or long distance, at the same time that it actuates
a rotating disc, pivotted or oscillating about an axis, and the position or colour of
which may be as agreed and corresponds either to the presence or absence of the
resident.
In order to more clearly explain this system we show an example of a rotating
disc making a quarter of a turn, always in the same direction at each entrance
or exit.
This arrangement consists of an electro magnet E which attracts its armature E¹
which is connected by a metallic wire to a ratchet lever F with counterweight g
which takes up one tooth on a ratchet wheel F¹. This ratchet wheel is keyed on

page_text: the same spindle as a toothed wheel G gearing into a pinion G' on the axis of
which is fitted the disc J; this latter is divided into four parts of two different
colours one of which indicates the presence and the other the absence of the
resident.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. A lock made unpickable by the application of a plate enclosing the half-turn
bolt this lock being arranged with three bolts of which one indicates by a bell or
any other alarm, the entrance and exit of the resident and another bolt (that in the
centre) starting the current and thereby the alarm when a false key is introduced.
2. The lock as hereinbefore described in combination with a staple and base
plate, with contacts corresponding to the bolts above mentioned, receiving current
from any battery; this plate being provided with break buttons causing the alarm,
substantially as described.
3. An indicating tablet showing entrance and exit of the resident characterised
by an electro magnet actuating a disc with a rotating movement, oscillating or
pivoting through a ratchet lever actuating a ratchet, a toothed wheel and a
pinion.
4. An improved electric lock arranged constructed and operating substantially
as described in the foregoing Specification and illustrated in the drawings hereunto
annexed.
Dated this 24th day of February 1896.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.