IMPROVEMENTS IN DOOR FASTENERS
Year: 1873

page_text: LETTERS PATENT to Henry Jubber, of 1, Clanricarde Gardens,
Kensington, in the County of Middlesex, for the Invention of
" IMPROVEMENTS IN DOOR FASTENERS."
PROVISIONAL SPECIFICATION left by the said Henry Jubber at the
Office of the Commissioners of Patents, with his Petition, on the
10th November 1873.
I, HENRY JUBBER, of 1, Olanricarde Gardens, Kensington, in the
County of Middlesex, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN DOOR FASTENERS," to be as follows:—
This Invention has for its object improvements in door fasteners.
For the purpose of obtaining a portable door fastener I form a gun-
metal wedge, through a tapped hole in which a steel screw passes. To
fasten a door opening inwardly the wedge is pushed underneath it as far
as it will go and the screw is then turned so as to make its end project
a short distance from the under surface of the wedge and enters the floor
or surface on which the wedge rests. For the purpose of fastening a

page_text: door opening outwardly a lever is fitted into a recess on the under side
of the wedge, the wedge is inserted under the door as before and the
screw being entered into another screw hole in the wedge depresses one
end of a steel lever, raising to a corresponding extent its other end,
which is contained in a slot passing completely through the wedge; on
this end of the lever a steel plate rests, it has ratchet-like teeth formed
on its upper surface; the toothed plate is fitted into a recess on the top
face of the wedge, and when out of use it lies in this recess just beneath
the face of the wedge, but when the screw and lever act upon it the end
of the toothed plate nearest to the apex of the wedge is raised out of the
recess whilst the plate still bears upon the wedge at the end nearest the
head or broader end of the wedge; the plate being thus raised the teeth
penetrate the under side of the door and hold it securely. There is a
third hole in the wedge which serves to hold the screw when out of use.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Jubber in the Great Seal Patent Office on
the 8th May 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
JUBBER, of 1, Olanricarde Gardens, Kensington, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of November, in the year
of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Henry Jubber, Her special
licence that I, the said Henry Jubber, my executors, administrators,
and assigns, or such others as I, the said Henry Jubber, executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN DOOR FASTENERS," upon the condition (amongst others) that I, the
said Henry Jubber, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should

page_text: particularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Henry Jubber, do hereby declare
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement thereof, that is to say :-
This Invention has for its object improvements in door fasteners.
For the purpose of obtaining a portable door fastener I form a metal
wedge through a tapped hole in which a steel screw passes. To fasten a
door opening inwardly the wedge is pushed underneath it as far as it will
go and the screw is then turned so as to make its end project a short
distance from the under surface of the wedge and enter the floor or
surface on which the wedge rests. For the purpose of fastening a
door opening outwardly a lever is fitted into a recess on the under side
of the wedge, the wedge is inserted under the door as before, and the
screw being entered into another screw hole in the wedge depresses one
end of a steel lever raising to a corresponding extent its other end which
is contained in a slot passing completely through the wedge, and has
ratchet-like teeth formed on its upper surface just beneath the face of
the wedge; but when the screw and lever act upon it the end of the
toothed plate nearest to the apex of the wedge is raised out of the recess
whilst the plate still bears upon the wedge at the end nearest the head,
the teeth then penetrate the under side of the door and hold it securely.
There is a third hole in the wedge which serves to hold the screw when
out of use.
In order that my Invention may be fully understood I have shewn in
the Drawings hereunto annexed various views of a door fastener con-
structed as above described.
Figure 1 shews a side view, Figure 2 a plan, and Figure 3 an under
side view of the fastener when out of use.
Figure 4 shews a longitudinal section of the fastener when in use for
securing a door opening inwards.

page_text: a is the metal wedge; b, the steel screw; 6', 6', are plates pin-jointed
to it to serve as a handle by which the screw may be turned; c is the
lever which lies in a slot in the wedge a; and d are the teeth formed at
its end.
When the fastener is out of use the steel screw 6 may be screwed into
a hole tapped for it in the end of the wedge, as shown at Figures 1, 2,
and 3, and the plates 6¹ turned into a position to lie alongside of the
wedge, as shewn in these Figures.
When the fastener is required to be used the plates 6¹ are turned so as
to project outwards from the screw, and by means of them the screw
may be unscrewed from the base of the wedge.
When the door to be fastened opens inwards the point of the wedge is
inserted under the door and the screw is screwed into the hole 6ª formed
through the wedge until the point of the screw has entered sufficiently
into the floor, as shewn at Figure 4. If the door to be fastened opens
outwards the wedge is similarly inserted under the door, and the screw
screwed into the hole 6 in the wedge; the point of the screw then
passes down through a slot in the end of the lever o and enters the floor
until the end of the screw thread comes against the lever, the lever will
then turn outwards, as shewn at Figure 5, and the teeth upon it will be
forced into the under side of the door and get a firm hold upon it.
In the Drawings the upper end of the screw 6 is shewn to be formed
into a key suitable for opening the locks of railway carriage doors, but
the screw may, if desired, be formed without such key.
Having thus described the nature of my Invention, and the manner of
carrying the same into effect, I would have it understood that I claim
the construction of door fasteners, substantially as above described.
In witness whereof, I, the said Henry Jubber, have hereunto set
my hand and seal, this Seventh day of May, in the year of our
Lord One thousand eight hundred and seventy-four