A NEW OR IMPROVED HINGE FOR HANGING AND CLOSING DOORS, GATES, OR WINDOWS
Year: 1858

page_text: LETTERS PATENT to Henry Green, of Liverpool, in the County of
Lancaster, Ironmonger, for the Invention of "A NEW OR IMPROVED
HINGE FOR HANGING AND CLOSING DOORS, GATES, OR WINDOWS."
Şealed the 18th January 1859, and dated the 22nd July 1858.
PROVISIONAL SPECIFICATION left by the said Henry Green, at the Office
of the Commissioners of Patents, with his Petition, on the 22nd July
1858.
I, HENRY GREEN, of Liverpool, in the County of Lancaster, Ironmonger,
do hereby declare the nature of the said Invention for "A NEW OR IMPROVED
HINGE FOR HANGING AND CLOSING DOORS, GATES, OR WINDOWS," to be as
follows:-
My new or improved hinge consists of a box or case containing the
mechanism herein-after described, from the top of which box a vertical shaft
or axis rises, to which the lower edge of the door is attached by an arm or
otherwise. The said box or case is let into the floor under the door, the top
of the said box being flush with the floor. The parts contained in the box
are constructed as follows:-On the lower end of the vertical axis on which
the door turns is a cam, which, when the door is opened in either direction,
bears against a frame which slides in a horizontal or nearly horizontal plane,
moving the said slide from its normal position. A heavy mass or weight of

page_text: metal is hooked to the said slide, and on the motion of the said slide the said
weight is drawn from its original position. The said weight rests upon a
transverse bar carrying a roller to facilitate the motion of the weight over it,
and the position of the said weight is such that, as it is pulled by the sliding
frame, its centre of gravity is raised and made to approach a position
immediately over the said transverse bar. The result of this arrangement is,
that the resistance of the weight to the opening of the door diminishes as the
door opens, and the tendency of the weight to return to its normal position
effects the closing of the door. In order still more effectually to hold the
door in its place when closed, that part of the weight which rests upon the
transverse roller bar is made concave, so that the roller fits thereon and causes
great resistance to the first opening of the door.
The depth of the said
amount of resistance it
concavity may be regulated so as to adjust the
occasions. Instead of a weight, a helical or other spring may be employed to
act upon the before mentioned slide with the same or nearly the same effect.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Green, in the Great Seal Patent Office on the 18th
January 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
GREEN, of Liverpool, in the County of Lancaster, Ironmonger, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of July, in the year of our Lord
One thousand eight hundred and fifty-eight, in the twenty-second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Henry Green, Her special licence that I, the said Henry Green, my, execu-
tors, administrators, and assigns, or such others as I, the said Henry Green, my
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 "A NEW OR IMPROVED HINGE FOR HANGING
AND CLOSING DOORS, GATES, OR WINDOWS," upon the condition (amongst others)
that I, the said Henry Green, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals, should
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

page_text: nied in the Great Seal Patent Once within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Henry Green, do hereby declare the
nature of the said Invention; and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:
My Invention consists of a new or improved hinge for hanging and closing
doors, gates, or windows, constructed in the manner herein-after described and
illustrated in the accompanying Drawing.
The
Figure represents in longitudinal vertical section a hinge constructed
according to my Invention, and Figure 2 represents a plan of the same.
same letters indicate the same parts in both Figures.
My new or improved hinge consists of a box or case of iron a, containing
the mechanism of the hinge herein after described; b is a vertical shaft or
axis, the upper end of which protrudes above the box a, to which said axis b,
the lower edge of the door, gate, or window is attached by screws passing
through the holes c in an arm or lever d fixed on the square upper end of the
said shaft or axis b; or the door, gate, or window may be fixed to the axis b in
any other convenient manner. The door, gate, or window has also a top
centre, as is well understood. The said axis 6 works in a boss or bearing e
made upon the bottom of the case a. The said box or case a is let into the
floor under the door (when the hinge is employed for hanging and closing a
door), the top of the said box being flush with the floor. The mechanism
contained in the box or case is constructed as follows:-On the lower end of
the vertical shaft or axis b is a cam f, the figure of which will be best seen by
referring to Figure 2, which said cam, when the door is opened in either
direction, bears against one or other of the bent or cranked parts g', g', of the
frame g, g, sliding the said frame in a nearly horizontal plane from the
position represented in the Drawing to that indicated in dotted lines in
Figure 1. The said sliding frame g, g, slides in grooves h, h, formed in the
plates i, i, fixed to the case a. A heavy mass or weight of metal k is hooked
by the hook 7 to the sliding frame g, g, the said hook passing over the rod or
cross bar m of the said sliding frame. On the motion of the sliding frame g, g,
the weight or mass of metal k is drawn from the position represented in
Figure 1 to that indicated in dotted lines in the said Figure, the said weight k
bearing, as it moves, against a transverse rod or roller n. The change in the
position of the centre of gravity of the said weight as it is partially drawn
over the roller n, occasions a diminishing resistance as the door, gate, or
window opens. The tendency of the weight to return to the position

page_text: represented in Figure 1 occasions the closing of the door, gate, or window,
when the same is at liberty to move. In order still more effectually to hold
the door, gate, or window in its place when closed, that part o of the hook
which rests upon the transverse roller bar n is made concave, as represented,
so that the said roller bar n fits therein, and causes great resistance to the
first opening of the door, gate, or window. The depth of the said concavity o
may be regulated so as to adjust the amount of resistance it occasions.
Having now described the nature of my Invention, and the manner of
carrying the same into effect, I wish it to be understood, that I do not limit
myself to the precise details herein described and represented, as the same
may be varied without departing from the nature of my Invention; but I
claim as my Invention, the new or improved hinge for hanging and closing
doors, gates, and windows, herein-before described and illustrated in the
accompanying Drawing, that is to say, a hinge in which the mechanism for
hanging and closing the door, gate, or window is acted upon by a weight, as
described and represented.
In witness whereof, I, the said Henry Green, have hereunto set my hand
and seal, this Fourteenth day of January, in the year of our Lord
One thousand eight hundred and fifty-nine.
Witness,
JOHN WOODS.
HENRY GREEN. (L.S.)