AN IMPROVE- MENT IN THE MODE OF UNITING DIFFERENT METALS, SUCH AS IRON AND COPPER, OR ALLOYS, TO FORM COMPOUND METALLIC CASTINGS
Year: 1865

page_text: LETTERS PATENT to George Nimmo, of Jersey City, in the State of New
Jersey, United States of America, for the Invention of "AN IMPROVE-
MENT IN THE MODE OF UNITING DIFFERENT METALS, SUCH AS IRON AND COPPER,
PROVISIONAL SPECIFICATION left by the said George Nimmo at the
Office of the Commissioners of Patents, with his Petition, on the 19th
July 1865.
I, GEORGE NIMMO, of Jersey City, in the State of New Jersey, United
States of America, do hereby declare the nature of the said Invention for "AN
IMPROVEMENT IN THE MODE OF UNITING DIFFERENT METALS, SUCH AS IRON AND
COPPER, OR ALLOYS, TO FORM COMPOUND METALLIC CASTINGS," to be as follows:-
Alloys have heretofore been extensively produced, and in a great variety,
by fusing together different metals. There are, however, many metals and scrap
pieces that are not adapted for use in alloys, such, for instance, as iron and steel
shavings, borings, and turnings. I have discovered that these may be made
use of for producing a compound metal of great beauty, and possessing con-
siderable strength, the same being particularly adapted for shafts, columns,.
and machine frames. The material employed is molten copper, brass, or any
suitable alloy, which I use for brazing together pieces of iron or other cheap
metal, such as boiler maker's pnnchings, shavings of wrought or cast iron,
or steel chips, filings, pieces, or scraps. I take these and subject them to a
high degree of heat, so that they are almost at a welding temperature. I then
turn them into a mould, prepared as usual in sand or otherwise, of the shape
of the article to be produced, and immediately pour upon such heated pieces
of iron or other metal brass or copper in a molten state, the effect of which

page_text: is to braze the said pieces of baser metal together, and form one solid mass
that may be turned, planed, ground, polished, or otherwise worked or finished;
and the mottled appearance of this compound metal is such as to produce
great beauty, and render the same particularly adapted to ornamental columns,
shafts, wheels, and frames, where a homogeneous metal is not indispensable.
I therefore intend to employ this compound metal wherever the same is
available, and it will be apparent that it is much cheaper than articles made
of brass or copper alone.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Nimmo in the Great Seal Patent Office on the 16th
January 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
Nouve, of Jersey City, in the State of New Jersey, United States of America,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of July, in the year of our Lord One
thousand eight hundred and sixty-five, in the twenty-ninth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the
said George Nimmo, Her special license that I, the said George Nimmo,
my executors, administrators, and assigns, or such others as I, the said George
Nimmo, 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 "AN IMPROVEMENT IN THE MODE OF
UNITING DIFFERENT METALS, SUCH AS IRON AND COPPER, OR ALLOYS, TO FORM
COMPOUND METALLIC CASTINGS," upon the condition (amongst others) that I, the
said George Nimmo, by an instrument in writing under my hand and seal,
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 George Nimmo, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement (that is to say):-
Alloys have heretofore been extensively produced, and in a great variety, by

page_text: fusing together different metals. There are, however, many metals and scrap
pieces that are not adapted for use in alloys, such, for instance, as iron and steel
shavings, borings, turnings, &c. I have discovered that these may be made
use of for producing a compound metal of great beauty, and possessing con-
siderable strength, the same being particularly adapted for shafts, columns,
machine frames, &c. The material employed is molten copper, brass, or any
suitable alloy, which I use for brazing together pieces of iron or other cheap
metal, such as boiler maker's punchings, shavings of wrought or cast iron, or
steel chips, filings, pieces, or scraps. I take these and subject them to a high
degree of heat, so that they are almost at a welding temperature. I then turn
them into a mould, prepared as usual in sand or otherwise, of the shape of the
article to be produced, and immediately pour upon such heated pieces of iron
or other metal brass or copper in a molten state, the effect of which is to
braze the said pieces of baser metal together and form one solid mass that
may be turned, planed, ground, polished, or otherwise worked or finished:
and the mottled appearance of this compound metal is such as to produce
great beauty, and render the same particularly adapted to ornamental columns,
shafts, wheels, frames, &c., where a homogeneous metal is not indispensable.
I therefore intend to employ this compound metal wherever the same is
available, and it will be apparent that it is much cheaper than articles made
of brass or copper alone.
What I claim and desire to secure by Letters Patent is, the compound
metal formed in the manner specified.
In witness whereof, I, the said George Nimmo, have hereunto set my
hand and seal, this Fourteenth day of December, in the year of our
Lord One thousand eight hundred and sixty-five.
Witnesses,
CHA. H. SMITH,
119 & 121, Nassau St.,
New York.
GEO. D. WALKER,
119 & 121, Nassau St.,
N. York.
GEORGE NIMMO. (L.S.)