IMPROVEMENTS IN WORKING OR TREATING WHAT IS KNOWN AS SIEMENS' DIRECT IRON
Year: 1879

page_text: LETTERS PATENT to Bristow Hunt, of Serle Street, Lincoln's Inn, in the
County of Middlesex, Gentleman, for the Invention of "IMPROVEMENTS IN
WORKING OR TREATING WHAT IS KNOWN AS SIEMENS' DIRECT IRON." A com-
munication from abroad by Elbridge Wheeler, of Philadelphia, Pennsylvania, in
the United States of America.
Sealed the 22nd June 1880, and dated the 31st December 1879.
PROVISIONAL SPECIFICATION left by the said Bristow Hunt at the Office
of the Commissioners of Patents on the 31st December 1879.
BRISTOW HUNT, of Serle Street, Lincoln's Inn, in the County of Middlesex,
Gentleman, "IMPROVEMENTS IN WORKING OR TREATING WHAT IS KNOWN AS
SIEMENS DIRECT IRON." (A communication from abroad by Elbridge Wheeler, of
Philadelphia, Pennsylvania, in the United States of America.)
This Invention relates to the working of what is known as Dr. Siemens' direct
bloom or direct iron, which is made direct from the ore by Dr. Siemens' process.
This iron, which is of very pure quality, is especially useful for conversion into
cast steel, but the blooms being large difficulty has been experienced in reducing
the metal without waste into the small pieces necessary for placing in crucibles.
It has heretofore been impracticable moreover to weld this metal and to roll it
into bars.
The Invention consists of a process hereinafter described of rolling this metal
into bars, so that the latter may be cut to proper sizes for placing into crucibles
and for conversion into cast steel; also in rolling the metal into merchant or
other bars which are not only more economical but superior in quality to bars of
the best refined iron.
It is proposed to carry out this Invention in the following manner :-A bloom or
ball of the Siemens' direct iron is taken and enveloped in a tight cover of ordinary
wrought iron; it is then subjected in a furnace to the same heat as an ordinary pile
of wrought iron requires. The wrought iron clothing of the bloom prevents the
disintegration of the latter by heat, and when the clothed bloom has been heated
to the proper degree it can be removed from the furnace and reduced by hammering
or rolling or both.
The bars may either be cut into lengths for conversion into steel, or the bloom
can be converted directly into merchant or other bars which are of the superior
quality above referred to.
The wrought iron clothing of the bloom may be made in different ways it may;
for instance, be made of wrought iron plates properly bound together, or of bars
properly secured.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Bristow Hunt in the Great Seal Patent Office on the 30th June
1880.
BRISTOW HUNT, of Serle Street, Lincoln's Inn, in the County of Middlesex,
Gentleman. "IMPROVEMENTS IN WORKING OR TREATING WHAT IS KNOWN AS
SIEMENS' DIRECT IRON." (A communication from abroad by Elbridge Wheeler, of
Philadelphia, Pennsylvania, in the United States of America.)
This Invention relates to the working of what is known as Dr. Siemens' direct
bloom or direct iron, which is made direct from the ore by Dr. Siemens' process.
This iron, which is of very pure quality, is especially useful for conversion into
cast steel, but the blooms being large difficulty has been experienced in reducing
the metal without waste into the small pieces necessary for placing in crucibles. It
has heretofore been impracticable moreover to weld this metal and to roll it into
bars.
This Invention consists of a process, hereinafter described, of rolling this metal
into bars, so that the latter may be cut to proper sizes for placing into crucibles,
and for conversion into cast steel; also in rolling the metal into merchant or other
bars, which are not only more economical, but superior in quality to bars of the
best refined iron.
It is proposed to carry out this Invention in the following manner :-
A bloom or ball of the Siemens' direct iron is taken and enveloped in a tight
cover of ordinary wrought iron, and is then subjected in a furnace to the same heat
as an ordinary pile of wrought iron requires. The wrought iron clothing of the
bloom prevents the disintegration of the latter by heat, and when the clothed
bloom has been heated to the proper degree, it can be removed from the furnace
and reduced by hammering or rolling, or both.
The bars may either be cut into lengths for conversion into steel, or the bloom
can be converted directly into merchant or other bars which are of the superior
quality above referred to.
The wrought iron clothing of the bloom may be made in different ways; it may, 3
for instance, be made of wrought iron plates properly bound together, or of bars
properly secured.
Having now described the nature and object of the said Invention, together
with the manner in which the same is to be or may be performed or carried into
practical effect, I would remark in conclusion that I claim as the Invention com- 3
municated to me by the said Elbridge Wheeler,-
The herein before described method or mode of treating the direct bloom or direct
iron of Dr. Siemens, the same consisting in enveloping the metal in wrought iron,
then heating the enveloped metal, and finally reducing the mass by hammering, or
rolling, or both, substantially as set forth.
In witness whereof, I, the said Bristow Hunt, have hereunto set my hand
and seal, this Thirtieth day of June, in the year of our Lord One thousand
sight hundred and sight
BRISTOW HUNT. (L.S.)