IMPROVEMENTS IN METAL DOORS
Year: 1872

page_text: LETTERS PATENT to Henry Royall Minns, of Stapleton Road, in the
City and County of Bristol, for the Invention of "IMPROVEMENTS
IN METAL DOORS."
Sealed the 23rd August 1872, and dated the 24th February 1872.
PROVISIONAL SPECIFICATION left by the said Henry Royall Minns
at the Office of the Commissioners of Patents, with his Petition,
on the 24th February 1872.
I, HENRY ROYALL MINNS, of Stapleton Road, in the City and
County of Bristol, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN METAL DOORS," to be as follows:-
This Invention consists in manufacturing metal doors in the following
manner I take two plates or sheets of metal of the entire size the
door is required to be, and by hydraulic pressure stamp or cut out at
one operation spaces to receive panels, which may be fixed thereto near
their edges by screws or rivets with flush heads. I propose to form the

page_text: aforesaid panels by stamping them by hydraulic pressure with their
mouldings complete, the panel and mouldings of each panel being
formed of one entire piece of sheet metal. The aforesaid plates, which
are to form the two sides of the door when fitted with their panels, I
proceed to connect together at their edges by strips of channelled metal,
and connect the parts together by screws. I also rivet or otherwise fix
or attach socket pieces to one plate of the door, and hooked staples to
the other plate, so that when the two aforesaid plates are hooked
together (previous to connecting them together at their edges) the said
hooks and staples serve as stiffening pieces to prevent the plates of the
door from bulging or "sagging."
I would here observe that instead of the aforesaid hooks and sockets,
short pieces of tubing may be employed to stiffen the door, and a screw
or rivet be passed through each tube for holding the tube in position,
and connecting the two plates of the door together previous to com-
pleting the edges of the door as above described.
Another mode of forming the edges of metal doors is as follows:-I
take two strips of stout plate or hoop iron of different widths. In using
these pieces to form the edges of the door it is necessary to turn or bend
over the edges of the aforesaid plates to receive screws for connecting
the parts together.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Royall Minns in the Great Seal Patent
Office on the 23rd August 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
ROYALL MINNS, of Stapleton Road, in the City and County of Bristol,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of February, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Henry Royall Minns, Her
special licence that I, the said Henry Royall Minns, my executors,

page_text: administrators, and assigns, or such others as I, the said Henry
Royall Minns, 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 "IMPROVEMENTS IN METAL DOORS," upon the condition
(amongst
that I,
that I, the said Henry Royall Minns, my
executors or administrators, by an instrument 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 filed in the
Great Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent.
others)
NOW KNOW YE, that I, the said Henry Royall Minns, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, that is to say :—
-
This Invention consists in manufacturing metal doors in the following
manner I take two plates or sheets of metal of the entire size the
door is required to be, and by hydraulic pressure stamp or cut out at
one operation spaces to receive panels which may be fixed thereto near
their edges by screws or rivets with flush heads. I propose to form the
aforesaid panels by stamping them by hydraulic pressure with their
mouldings complete, the panel and mouldings of each panel being
formed of one entire piece of sheet metal. The aforesaid plates, which
are to form the two sides of the door when fitted with their panels, I
proceed to connect together at their edges by strips of channelled metal,
and connect the parts together by screws. I also rivet or otherwise fix
or attach socket pieces to one plate of the door and hooked staples to
the other plate, so that when the two aforesaid plates are hooked
together (previous to connecting them together at their edges) the said
hooks and staples serve as stiffening pieces to prevent the plates of the
door from bulging or "sagging."
I would here observe that instead of the aforesaid hooks and sockets,
short pieces of tubing may be employed to stiffen the door, and a screw
or rivet be passed through each tube for holding the tube in position,

page_text: their panels, I proceed to connect together at their edges by strips of
channelled metal D, shewn at Figures 3 and 7, and connect the
parts A, B, D, together by screws at a. I also rivet or otherwise fix or
attach socket pieces 6 to one plate of the door and hooked staples c to
the other plate, so that when the two aforesaid plates A and B are
hooked together, as at Figure 2, previous to connecting them together
at their edges, the said hooks and staples serve as stiffening pieces to
prevent the plates of the door from bulging or "sagging."
I would here observe that instead of the aforesaid hooks and sockets b
and c short pieces of tubing d, shewn at Figures 4 and 5, may be
employed to stiffen the door, and a screw or revit be passed through
each tube for holding the tube in position, and connecting the two
plates A and B of the door together previous to completing the edges of
the door, as above described.
Figures 5 and 6 shew another mode of forming the edges of metal
doors as follows:-e, f, mark two strips of stout plate or hoop iron of
different widths, the piece e being the narrowest. In using these pieces
to form the edges of the door it is necessary to turn or bend over the
edges of the aforesaid plates A and B, as at g, to receive screws, as at h
O for connecting the parts e, f, g, together.
)
Having now fully described and set forth the nature and object of my
said Invention for "Improvements in Metal Doors," together with the
means by which it may be effected, I would remark in conclusion that
I hereby declare my Invention to consist in, and I claim,-
First. Stamping spaces for panels out of sheets of metal of the size to
form a door.
Secondly. Forming panels with mouldings out of one entire piece of
metal by stamping, thus forming the whole door, or connecting and
fixing the said panels to the spaces intended to receive them.
Thirdly. Stiffening the front and back plates of metal doors by
hooking them together at their inner sides, or using short pieces of
tubing with a Screw rivet passed through each tube instead of

page_text: Fourthly. The use of channelled iron or strips of hoop iron for
completing the edges of metal doors, substantially as above described.
In witness whereof, I, the said Henry Royall Minns, have here-
unto set my hand and seal, this Twenty-first day of August,
in the year of our Lord One thousand eight hundred and
seventy-two.
HENRY ROYALL MINNS. (L.S.)