IMPROVEMENTS IN PUDDLING FURNACES
Year: 1883

page_text: LETTERS PATENT to John Imray of N° 28 Southampton Buildings Chancery
Lane in the County of Middlesex for an Invention of "IMPROVEMENTS IN
PUDDLING FURNACES" communicated to him from abroad by Pierre Joseph
Dujardin and Jean Baptiste Ferdinand Fredureau both of Paris, France,
Engineers
PROVISIONAL SPECIFICATION left by the said John Imray at the Office
of the Commissioners of Patents on the 31st March 1883.
JOHN IMRAY of N° 28 Southampton Buildings Chancery Lane in the County
of Middlesex "IMPROVEMENTS IN PUDDLING FURNACES" [communicated to him
from abroad by Pierre Joseph Dujardin and Jean Baptiste Ferdinand Fredureau
both of Paris, France, Engineers]
This invention relates to the construction of puddling furnaces specially adapted
for puddling metal fused in separate furnaces or cupolas, and supplied to the
puddling furnaces in a molten state. The principal object of the improvements is
to protect the bed of the furnace and its lining by circulation of water. For this
purpose, at each side of the bed and at its back are formed hollow bridges, and
under the bed is formed a tank. Water from an elevated reservoir, or supplied
by pumping, is conveyed by branch pipes to. the interiors of the hollow bridges,
and from their upper parts siphon pipes convey the overflow to the tank below the
bed, from which another siphon pipe conveys the water to the external trough used
for cooling the puddling tools. Each of the siphon pipes above mentioned is in the
form of an inverted U, its bend being at some height above the furnace, so as to
ensure that the bridges and tank remain filled with water. By thus causing water
to circulate on three sides, and under the bottom of the bed, its lining is rendered
capable of resisting the effects of the heat employed. The bed, along with the
hollow bridges, may be made removeable, so that it can be relined or repaired, but,
in this case, care is taken that the bottom plate of the bed, when in its place, is in
intimate contact with the cover of the tank, so that the heat may be freely
conducted.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Imray in the Great Seal Patent Office on the 26th September
1883.
JOHN IMRAY of N° 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex "IMPROVEMENTS IN PUDDLING FURNACES A communication to me
from abroad by Pierre Joseph Dujardin and Jean Baptiste Ferdinand Fredureau
both of Paris, France, Engineers
This invention relates to the construction of puddling furnaces specially adapted
for puddling metal fused in separate furnaces or cupolas, and supplied to the
puddling furnaces in a molten state. The principal object of the improvements is
to protect the bed of the furnace and its lining by circulation of water. For this
purpose, at each side of the bed and at its back are formed hollow bridges, and under
the bed is formed a tank. Water from an elevated reservoir, or supplied by
pumping, is conveyed by branch pipes to the interiors of the hollow bridges, and
from their upper parts siphon pipes convey their overflow to the tank below the
bed, from which another siphon pipe conveys the water to the external trough used
for cooling the puddling tools. Each of these siphon pipes above mentioned is in
the form of an inverted U, its bend being at some height above the furnace, so as
to ensure that the bridges and tank remain filled with water. By thus causing
water to circulate on three sides, and under the bottom of the bed, its lining is
rendered capable of resisting the effects of the heat employed. The bed, along with
the hollow bridges, may be made removeable, so that it can be relined or repaired,
but, in this case, care is taken that the bottom plate of the bed, when in its place,
is in intimate contact with the cover of the tank, so that the heat may be freely
conducted.
C
from
Fig. 1 of the accompanying drawings is a front view, Fig. 2 is an end view,
Fig. 3 is a longitudinal section on G H, Figs. 4 and 6 are transverse sections on
CD and E F respectively and Fig. 5 is a sectional plan on A. B, of a puddling
furnace according to this invention. A and B are the hollow end bridges and C is
a back hollow bridge connecting them; D is a moveable sole plate under which is
the tank E supplied with the water discharged from A, B and C ;-F is the fire
place and H the bed. K is the pipe supplying water to the funnels a b
which pipes lead to the interiors of A, B and C; and L is the pipe leading the
overflow of E to the trough M for cooling the tools. N is the flue leading to the
boilers or chimney. O is a pipe to shew the water level, and P is a pipe for cooling
the edge of the tank E. The overflow of the channels A, B and C is led to the
tank E by the siphon pipes S S₁S" which extend some height to ensure filling.
The iron sole D rests on the tank E in intimate contact therewith, so as to secure
good conduction.
Having thus described the nature of the said invention and in what manner the
same is to be performed as communicated to me by my foreign correspondents, I
claim:
First. The construction of puddling furnace with the end bridges and back of
its bed made hollow and connected to water supply and discharge pipes,
so as to be kept cool by circulation of water through them, substantially
as herein described.
Second. The construction of puddling furnace with a moveable sole resting on a
tank kent cool by circulation of water through it, substantially as herein

page_text: Third. In a puddling furnace, the combination of the hollow end and back
bridges of the bed, with the tank under the bed and the supply, siphon
and discharge pipes for the circulating water, substantially as herein
described.
In Witness whereof I the said John Imray have. hereunto set my hand and
seal this Twenty Sixth day of September in the year of our Lord One thousand
eight hundred and eighty three.
JOHN IMKAY (LS.)