IMPROVEMENTS IN ROTARY PUDDLING FURNACES
Year: 1870

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," Southampton Buildings, London, for the Invention of
"IMPROVEMENTS IN ROTARY PUDDLING FURNACES."-A. communication
from abroad by Samuel Danks, of Cincinnati, Ohio, United States
of America.
Sealed the 18th October 1870, and dated the 2nd September 1870..

page_text: LOOy I wwwvery 100000
Patent for the same, and have made solemn Declaration that it has been
communicated to me from abroad by Samuel Danks, of Cincinnati, Ohio,
United States of America.
NOW KNOW YE, that I, the said George Haseltine, do hereby
declare that the following Complete Specification, under my hand and
seal, fully describes and ascertains the nature of the said Invention, and .
in what manner the same is to be performed, in and by the following
statement, reference being had to the accompanying Drawing, forming
a part of this Specification:
:—
My Invention consists in the construction and arrangement of series
of pipes for the conveyance of water, steam, air, or other suitable
cooling substance close to the passages to and from the rotary refining
chamber and projecting corners and surfaces of puddling furnaces, and
_to_a_water, steam,-or_air_casing-surrounding-the-refining-chamber,-for
the purpose of reducing the temperature of those parts of the furnace
most exposed to intense heat; and also to annular metallic facings
attached to the refining chamber for its protection from excessive heat.
Figure 1 is a longitudinal section of a rotary puddling furnace,.
having my improvements connected therewith.
Figure 2 is a one-half section and one-half elevation of the fire-bridge,
the annular water collar, and the steam, water, or air casing as seen
from the grate.
Figure 3 is a sectional elevation of the shiftable piece K, the section
being taken through the annular pipe 7.
A represents the rotary refining chamber of the puddling furnace.
It consists of a cylinder constructed of suitable refractory material; its
ends are of the form of truncated cones. B, B, are rollers arranged
beneath the chamber, which they support, while permitting its free
rotation, accomplished by means of gearing, with a motor. The
bridge C has encased within it a coil of pipes D, for the conveyance of
water, steam, air, or other cooling substance. The first return of the
coil of pipes D is carried through the arch over the passage from the
grate to the refining chamber, as shown in Fig. 1. This pipe is
connected with the spiral pipe F, encased in the annular water, steam,
or air collar G, which is secured to the bridge end of the grate a, or
about the hot air passage, of which the bridge C forms the lower edge
or face. The conically concave face of the annular water, steam, or

page_text: air collar is of a form adapting it to fit closely the surface of the end of
the refining chamber. A discharge pipe H is connected with the last
return of the spiral pipe F in the annular collar G, and terminates at
an opening in or near the top of the water, steam, or air casing I,
which is constructed of thin metal, having its edges turned in toward
the refining chamber, which it entirely surrounds, without being in
immediate contact with it. The mouth of the shiftable piece K, which
is in immediate contact with the end of the refining chamber A furthest
removed from the grate, is constructed with an annular pipe 1 in
the edge thereof, the cooling substance being supplied to it through
the feed pipe . The inner conical faces of the ends of the refining
chamber A are covered with the annular metal facings L secured in
place by bolts or screws. The outside face of the shiftable piece K
is protected from the heat by the steam, water, or air chamber k.
The edges and faces of the opening from the grate to the rotary
refining chamber over the bridge C, and also the ends of the chamber
A and movable section of the smoke flue are the parts of the puddling
furnace subjected to the more intense heat, and consequently are
quickly destroyed. To prevent the rapid destruction of the exposed
parts of the furnace, I have in close proximity with them a series
of pipes or confined channels for the conveyance of water, steam,
air, or other cooling substance, which flows freely or may be forced
to circulate through said ducts that a low temperature may be insured.
The current of cooling substance having passed through the coil
in the bridge C is conveyed by the pipe J over the opening from
the grate a to the chamber A into the spiral pipe F in the annular
collar G, reducing the temperature of the parts by and through which
it passes, and is emptied from the discharge pipe H upon the top of the
rotary refining chamber A, over the surface of which it spreads,
diminishing its temperature. Finally, the steam or gases evolved from
the cooling substance in its passage through the pipes escapes under
the edges of the casing I, and the fluid part sinking to the lowest part
of the casing I overflows its edges and escapes into a suitable receptacle.
A cooling substance, such as water, steam, or air, is introduced into
the chamber k, which is constructed upon the outer face of the shiftable
piece K furthest removed from the grate, thence it is conducted by
the pipe into the annular pipe or chamber located in one edge of
the shiftable piece K and in contact with the metallic ring L, or in the
absence thereof with the edge of the refining chamber A. The cooling

page_text: substance is carried off after its passage through the ring 7 by the waste
pipe and discharged into the water, steam, or air chamber between
the casing I and the rotary refining chamber A. The facings L are
attached in a secure manner either to the interior conical ends of the
refining chamber A, or to the exterior thereof by bolts or screws. The
facings may for convenience in handling be constructed in sections.
They serve as an additional protection to the ends of the refining
chamber A. Each end of the rotary refining chamber A may be
protected by an annular collar G from the action of the heat.
Having thus fully described the said Invention, as communicated to
me by my foreign correspondent, I wish it understood that I claim,—
First. The annular water, steam, or air collar G constructed sub-
stantially as herein shown and described, for the purpose of preserving
a low temperature of one or each of the ends of the rotary refining
chamber of puddling furnaces with which the collar is in contact.
Second: The water, steam, or air pipe J located in the arch of the
passage from the grate a to the refining chamber A, substantially as and
for the purpose set forth.
Third. The water, steam, or air casing I constructed substantially in
the manner and for the purpose herein shown and described. .
Fourth. The water, steam, or air chamber k located upon the outside
face of the shiftable picce K, as and for the purpose set forth.
Fifth. The annular metallic facings L secured to the conical ends of
the rotary refining chamber A, substantially in the manner and for the
purpose specified.
In witness whereof, I, the said George Haseltine, have hereunto
set my hand and seal, this Second day of September, in the year
of our Lord One thousand eight hundred and seventy.
Witness,
W. ROBT. LAKE.
GEORGE HASELTINE. (L.S.)