IMPROVE- MENTA IN THE CONSTRUCTION OR DOORE FOR PunaLive BD
Year: 1873

page_text: LETTERS PATENT to Robert Bowman Richardson, of Gateshead, in
the County of Durham, Ironfounder, for the Invention of "IMPROVE-
MENTA IN THE CONSTRUCTION OR DOORE FOR PunaLive BD "
Sealed the 9th April 1874, and dated the 10th October 1873.
PROVISIONAL SPECIFICATION left by the said Robert Bowman
Richardson at the Office of the Commissioners of Patents, with
his Petition, on the 10th October 1873.
I, ROBERT BOWMAN RICHARDSON, of Gateshead, in the County of
Durham, Ironfounder, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN THE CONSTRUCTION OF DOORS FOR PUDDLING FURNACES,”
to be as follows:-
This Invention consists in the construction of doors for puddling
furnaces, whereby they are made more durable and economical than
hitherto.
That portion of the door in which is formed the "rabble hole" instead
of being cast with the door as heretofore is made separate and apart
therefrom, and attached thereto by means of dovetails. This moveable

page_text: piece is made sufficiently large to protect those parts of the door around
the "rabble hole" from burning, and the inside face of the moveable
piece, and also the edges of the "rabble hole" which are exposed to the
action of the heat are chilled so as to offer greater resistance thereto.
The moveable piece is provided on its exterior with lugs or projections,
similar lugs being formed on the exterior face of the door, and through
which lugs a pin or cotter is passed for the purpose of keeping the
moveable piece in its position.
When the moveable piece is burnt away around the "rabble hole"
the pin or cotter is removed and the moveable piece taken from the 1
door, and another placed in lieu thercof, thus obviating the necessity of
replacing the whole door when that portion around the "rabble hole"
becomes destroyed by the heat.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Robert Bowman Richardson in the Great Seal
Patent Office on the 9th April 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
BOWMAN RICHARDSON, of Gateshead, in the County of Durham,
Ironfounder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of October, 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 Robert Bowman Richardson,
Her special licence that I, the said Robert Bowman Richardson, my
executors, administrators, and assigns, or such others as I, the said
Robert Bowman Richardson, 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 THE CONSTRUCTION OF DOORS FOR
PUDDLING FURNACES," upon the condition (amongst others) that I, the said
Robert Bowman Richardson, my executors or administrators, by an

page_text: 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 immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Robert Bowman Richardson, 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, that is to say :—
My said Invention consists in the construction of doors for puddling
furnaces, whereby they are made more durable and economical than
heretofore.
That portion of the door in which is formed the "rabble hole" is
made separate and apart from the main portion of the door. This
moveable piece is provided with a groove, by preference dovetailed on
its outer edges, and into which groove the sides and top edges of the
aperture in the door to which the moveable piece is applied fit. The
moveable piece is made sufficiently large to protect those parts of the
door which are usually first destroyed, the internal flange of the groove
completely covering the framework around the aperture of the door.
The whole of the inside face of the moveable piece together with the
edges of the "rabble hole" which are exposed to the action of the heat
are chilled so as to offer greater resistance thereto.
The moveable piece is provided on its exterior with lugs or projections,
similar lugs or projections being formed on the exterior face of the door,
and through which lugs a pin or cotter is passed for the purpose of
keeping the moveable piece in its position.
When the moveable piece is burnt away and destroyed by the heat it
can be removed from the door by taking out the pin or cotter, and
another piece placed in lieu thereof, thus obviating the necessity of
replacing the whole door when that portion around the "rabble hole
is destroyed by the heat.
"
Having thus described and ascertained the nature of my said Invention
and in what manner the same is to be performed, I would observe in
conclusion that what I consider novel and original, and therefore claim

page_text: as constituting the Invention secured to me by the herein-before in
part recited Letters Patent is, the construction of doors for puddling
furnaces with the chilled moveable piece connected therewith in the
manner and for the purposes herein-before set forth and described, or any
mere modifications thereof.
In witness whereof, I, the said Robert Bowman Richardson, have
hereunto set my hand and seal, this Seventh day of April, in
the year of our Lord One thousand eight hundred and seventy-
four.
ROBERT BOWMAN RICHARDSON. (L.s.)