AN IMPROVEMENT IN THE COMPOUNDING OF DIFFERENT SPECIES OF METALS
Year: 1822

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
VAZIE, of Chasewater Mine, in the Parish of Kenwyn, in the County of
Cornwall, Civil Engineer, send greeting.
WHEREAS His most Excellent Majesty King George the Fourth did, by
His Letters Patent under the Great Seal of His United Kingdom, bearing
date at Westminster, the Third day of September 1822, in the third year of
His Majesty's reign, give and grant unto me, the said Robert Vazie, my exors,
adiñors, and assigns, His especial licence, full power, sole privilege and
authority, that I, the said Robert Vazie, my exors, adñors, and assigns, during
the term of years therein mentioned, should and lawfully might make, use,
exercise, and vend, within England, Wales, and the Town of Berwick-upon-
Tweed, my Invention of "AN IMPROVEMENT IN THE COMPOUNDING OF DIFFERENT
SPECIES OF METALS;" in which said Letters Patent there is contained a
proviso that if I, the said Robert Vazie, shall not particularly describe and
ascertain the nature of my said Invention, and in what manner the same
is to be performed, by an instrument in writing under my hand and seal,
and cause the same to be inrolled in His Majesty's High Court of Chancery
within six calendar months next and immediately after the date of the said
Letters Patent, that then the said Letters Patent, and all liberties and.
advantages whatsoever thereby granted, shall utterly, cease, determine, and
become void (as in and by the same), relation being thereunto had, will more
fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Robert Vazie, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are particularly described
and ascertained in and by the following description thereof (that is to say):-
1st, I put cast iron of any required quantity into a reverberatory, or blast,
or other furnace, and with the aid of fuel reduce the said metal to a fluid;
when the said fuel is nearly ready to be drawn out of the furnace I put the
quantity of brass intended to be mixed with the cast iron gently into the
furnace, after which the mass is intimately mixed by stirring the same together,
and as soon as the ebulition has subsided,, the compounding of the different
species of metals, as far as respects this process, is completed; the fluid metal
may then be cast into any required form.
2nd, when only a part of the quantity of the fluid iron which may be in
the furnace is intended to be compounded, the brass is melted seperately, and
is then intimately mixed with the fluid iron, either in the ladle into which it
may have been drawn, or in the channel connected with the mould wherein
the article is intended to be formed, by stirring the same together; the metal is
then in a proper state to be cast.
3rd, by another process the fluid iron is drawn into a ladle, or the channel
connected with the mould, and the brass in a solid state is put gently into the
said ladle or channel, and the mass is then intimately mixod by stirring the
same together; the casting is then proceeded with.
4th, or by another process the brass in a solid state is put into the ladle or
channel connected with the mould in the first instance, and the fluid iron is
afterwards drawn into the said ladle or channel; but the second process
is preferable to either the third or fourth. The proportion of the brass to the
iron differs with the nature of the castings required in pumps for the use of
mines where the water is of a corrosive quality, and decomposes cast iron
alone. One part of brass to one hundred parts of iron has been proved to
improve the metal, but in the forming of cylinders for steam engines, working
barrels for pumps, boxes for carriage wheels, bearers for axes, cog wheels,
and other articles intended to sustain friction, and for divers other purposes,
the proportion of the brass to the iron is more or less than one part in one
hundred parts; the compounding of the different species of metals being alike
in all these cases.
In witness whereof, I, the said Robert Vazie, have hereunto set my
hand and seal, this Twenty-fifth day of February, One thousand eight
hundred and twenty-three.
ROBT
(L.S.) VAZIE.

page_text: AND BE IT REMEMBERED, that on the Twenty-fifth day of February, in
the year of our Lord 1823, the aforesaid Robert Vazie came before our said
Lord the King in His Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Inrolled the Twenty-seventh day of February in the year of our Lord