IMPROVEMENTS IN THE MANUFACTURE OF COPPER TUBES AND OF COPPER-ENDED BRASS TUBES
Year: 1873

page_text: |_ LETTERS PATENT to Edward Mapplebeck, of the Clyde Tube Works,
Abberley Street, Birmingham, for the Invention of "IMPROVEMENTS
IN THE MANUFACTURE OF COPPER TUBES AND OF COPPER-ENDED BRASS
TUBES."
PROVISIONAL SPECIFICATION left by the said Edward Mapplebeck at
the Office of the Commissioners of Patents, with his Petition, on
the 25th June 1873.
I, EDWARD MAPPLEBECK, of the Clyde Tube Works, Abberley Street,
Birmingham, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE MANUFACTURE OF COPPER TUBES AND OF COPPER-ENDED
BRASS TUBES," to be as follows:-
:-
This Invention has for its object to manufacture solid drawn brass.
boiler tubes with an end of copper, and also to improve the manufacture.
of copper tubes. For this purpose, an ingot from which the tube has
subsequently to be drawn is first cast partly of copper and partly of
brass in an ingot mould, such as is now used when casting ingots of

page_text: brass, to be subsequently drawn into tubes. The copper is first poured
into the mould, and then immediately following it the brass by which
means a solid ingot is obtained composed of copper at one end and brass
at the other, and this compound ingot is afterwards drawn down in the
ordinary manner of drawing down brass tubes from ingots.
To manufacture a copper tube the ingot is formed in the same way,
and a tube drawn down from it; the copper portion of the tube may
then be cut off from the brass tube, or the ingot might be divided into
two parts, and each drawn separately.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edward Mapplebeck in the Great Seal Patent Office
on the 24th December 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
MAPPLEBECK, of the Clyde Tube Works, Abberley Street, Birmingham,
send greeting.
'
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fifth day of June, in the year
of our Lord One thousand eight hundred and seventy-three, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Edward Mapplebeck, Her special license
that I, the said Edward Mapplebeck, my executors, administrators, and
assigns, or such others as I, the said Edward Mapplebeck, 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 "IMPROVEMENTS IN
THE MANUFACTURE OF COPPER TUBES AND OF COPPER-ENDED BRASS TUBES," upon
the condition (amongst others) that I, the said Edward Mapplebeck, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, 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 monts next and immediately after the
date of the said Letters. Patent.

page_text: NOW KNOW YE, that I, the said Edward Mapplebeck, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :—
This Invention has for its object to manufacture solid drawn brass
boiler tubes with an end of copper. For this purpose, an ingot from
which the tube has subsequently to be drawn is first cast, partly of
copper and partly of brass in an ingot mould, such as is now used when
casting ingots of brass to be subsequently drawn into tubes. The copper
is first poured into the mould, and then immediately following it the
brass, by which means a solid ingot is obtained composed of copper at
one end and brass at the other, and this compound ingot is afterwards
drawn down in the ordinary manner of drawing down brass tubes from
ingots.
The ingot mould I prefer to form at the top with two lips on opposite
sides, so that one of the metals may be poured into the mould at the lip
on one side, and the other metal on the opposite side.
The operation of casting is as follows:-The copper having been
melted down either in a furnace or in a crucible or casting pot, and the
brass having also been melted down in a crucible or casting pot, and a
row of moulds each fitted as usual with a central core having been sct
up, the moulds are filled in succession by two workmen; one workman
on one side of a mould first pours into it from a ladle a sufficient
quantity of copper to fill up the mould, say for about 5 or 6 inches in
height, and before he has quite completed pouring in this amount of
copper the other workman on the opposite side of the mould commences
to pour
in the brass, and fills the mould, which usually is about 3 or 4
feet in height. The workmen then proceed to fill the next mould, and
so on in succession.
The compound ingots when removed from the moulds are then as
before stated drawn down in the ordinary manner, and if the length of
copper at the end is longer than required a portion of it is cut off, and
the portion so cut away may afterwards be drawn down separately to
form a short length of copper tube.
The length of copper tube required at the end of a brass boiler tube is
ordinarily about 10 or 12 inches, but any desired length of conner tube.

page_text: may be formed in the manner above described at the end of a tube of
brass.
Having thus described the nature of my Invention, and the manner
of performing the same, I would have it understood that I claim, the
manufacture of solid drawn brass tubes with an end of copper, as herein
described.
In witness whereof, I, the said Edward Mapplebeck, have hereunto
set my hand and seal, this Twenty-third day of December, in
the year of our Lord One thousand eight hundred and seventy-
⚫ three.
•
EDWARD MAPPLEBECK. (L.S.)