An Improved Device for Securing Doors from the Inside.
Year: 1897

page_text: An Improved Device for Securing Doors from the Inside.
We, JOHN TAYLOR, Builder, and ROBERT JAMESON, Blacksmith, both of Earsden,
Newcastle-on-Tyne, do hereby declare the nature of this invention to be as
follows:
This invention relates to a device which is intended to be applied to doors,
allowing them to be secured from the inside so that they cannot be opened by any
person at the outside.
The device
propose to employ is fitted between the edge of the door and the
door frame, and engages with both after it has been applied. The article consists
of a small plate which is provided with projecting teeth at one end extending
from one side and bevelled. These teeth are adapted to engage with the side of
the door frame when the article is placed in position.
To the other end of this plate a pin is fixed screw threaded and provided with a
head. This pin serves to carry a nut and also a loose sheath formed with a
shoulder. When this is turned to one side it projects from the face of the plate
at the side opposite to the teeth, and the sheath or tube is cut away so as to form
an inner shoulder or notch which fits over the edge of the plate. The plate is pro-
vided with a flange carrying the screwed pin.
When the shoulder is turned round into the position above described, the nut
can be screwed down tightly on the top of the tube. The shoulder is thus held
firmly in position, and cannot be turned round as it engages with the top of the
plate. A small stop is furnished which prevents the shoulder being turned com-
pletely round and holds it out of the way.
The arrangement is applied by placing the toothed plate against the door frame,
the shoulder being first turned out of the way. On closing the door the edge will
After
bear against the plate, and will cause the teeth to project into the frame.
the door is closed the shoulder is turned round and the nut is screwed firmly down.
As the shoulder engages with the edge of the door the latter cannot be forced open,
the teeth biting deeply in the material of the frame. If the door does not fit closely
in the frame, I employ a small plate flanged at one end and furnished with a spike.
This plate is fitted to the edge of the door, the flange being placed over the front
edge. On closing the door this extra plate will bear against the toothed plate
above described and press it tightly against the frame.
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page_text: We, JOHN TAYLOR, Builder, and ROBERT JAMESON, Blacksmith, both of Earsden,
Newcastle-on-Tyne, 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 a device which is intended to be applied to doors,
allowing them to be secured from the inside so that they cannot be opened by any
person at the outside.
The device I propose to employ is fitted between the edge of the door and the
door frame, and engages with both after it has been applied. The article consists
of a small plate which is provided with projecting teeth at one end extending
from one side and bevelled. These teeth are adapted to engage with the side of
the door frame when the article is placed in position.
To the other end of this plate a pin is fixed screw threaded and provided with a
head. This pin serves to carry a nut and also a loose sheath formed with a
shoulder. When this is turned to one side it projects from the face of the plate
at the side opposite to the teeth, and the sheath or tube is cut away so as to form
an inner shoulder or notch which fits over the edge of the plate. The plate is pro-
vided with a flange carrying the screwed pin.
When the shoulder is turned round into the position above described, the nut
can be screwed down tightly on the top of the tube. The shoulder is thus held
firmly in position, and cannot be turned round as it engages with the top of the
plate.
After
The arrangement is applied by placing the toothed plate against the door frame,
the shoulder being first turned out of the way. On closing the door the edge will
bear against the plate, and will cause the teeth to project into the frame.
the door is closed the shoulder is turned round and the nut is screwed firmly down.
As the shoulder engages with the edge of the door the latter cannot be forced open,
the teeth biting deeply in the material of the frame. If the door does not fit closely
in the frame I employ a small plate flanged at one end and furnished with a spike.
This plate is fitted to the edge of the door, the flange being placed over the front
edge. On closing the door this extra plate will bear against the toothed plate
above described and press it tightly against the frame.
Referring to the accompanying drawings
Fig. 1 is an elevation of a device constructed according to this invention.
Fig. 2 is a sectional plan showing the device in position and Fig. 3 is a detail
view.
The small plate a is provided with projecting teeth b at one end extending from
one side and bevelled, these teeth 6 being adapted to engage with the side of the
door frame when the device is placed in position as shown in Fig. 2. A screw
threaded pin c having a head d is attached to the other end of the plate a and upon
it a loose sheath or tube e formed with a shoulder f is arranged and a nut g for
operating same. When the shoulder f is turned to one side it projects from the
face of the plate a at the side opposite to the teeth band the sheath or tube e is
cut away at h so as to form an inner shoulder or notch which fits over the edge of
the plate a.
A flange a¹ is formed on the plate a and to this the screw threaded
When the shoulder f is turned round into position the nut g can be screwed
down tightly on the top of the sheath or tube e. The shoulder f is thus held firmly
in place and cannot be turned round as it engages with the flange a¹ of the plate a.
pin c is attached.

page_text: In use, the device is placed with the toothed plate a against the door frame, and
on closing the door the teeth 6 will be caused to project into the door frame. The
shoulder f is then turned into position and the nut g screwed firmly down.
It will be seen that as the shoulder f engages with the edge of the door the latter
cannot be forced open, the teeth 6 biting deeply in the material of the door frame.
If the door does not fit closely to the frame the small plate j (Fig. 3) provided
with flange k and spike is employed. This plate is fitted to the edge of the door,
the flange k being placed over the front edge. On closing the door this plate j
will bear against the toothed plate a above described and press it tightly against
the door frame.
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 :-
(1) An improved device for securing doors from the inside consisting of a toothed
plate adapted to bite into the door frame, and fitted with a flange and screw threaded
pin, and a tube or sheath upon said screw threaded pin having a shoulder piece
adapted to engage with the edge of the door, a nut being also provided for tighten-
ing up, substantially as described and for the purposes specified.
(2) An improved device for securing doors from the inside consisting of a
plate a having teeth b flange a¹ and screw threaded pin c, tube or sheath e fitted
upon said pine and provided with shoulder f and being notched at h and nut g for
tightening up substantially as described with reference to the accompanying sheet
of illustrative drawings and for the purposes specified.
(3) In connection with the device for securing doors from the inside claimed in
Claims 1 and 2 the plate j having flange k and spike for use when the door does
not fit closely to the frame substantially as described for the purposes specified.
Dated this 21st day of March 1898.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.