IMPROVEMENTS IN THE MANU- OF BRASS TUBES
Year: 1851

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
GREEN, of Birmingham, in the County of Warwick, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by
Her Royal Letters Patent under the Great Seal of the United King-
dom of Great Britain and Ireland, bearing date at Westminster, the
Twenty-fifth day of September, One thousand eight hundred and fifty-
one, in the fifteenth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Charles Green, my exors,
admors, and assigns, Her especial licence, full power, sole privilege and
authority, that I, the said Charles Green, my exors, adiiors, and assigns, or
such others as I, the said Charles Green, my exors, admors, or assigns,
should at any time agree with, and no others, from time to time and at
all times during the term of years therein expressed, should and lawfully
might make, use, exercise, and vend, within England, Wales, and the Town
of Berwick-upon-Tweed, my Invention of "IMPROVEMENTS IN THE MANU-
OF BRASS TUBES;" in which said Letters Patent is contained a
proviso that I, the said Charles Green, shall cause a particular description of
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, to be
inrolled in Her Majesty's High Court of Chancery within six calendar months
next and immediately after the date of the said in part recited Letters Patent,
as in and by the same, reference being thereunto had, will more fully and at
large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said

page_text: Charles Green, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, that is to say :-
My Invention is applicable to the manufacture of brass tubes without joint
or seam, such as are employed in locomotive and other steam boilers. Here-
tofore in making such description of brass tubes, it has been usual to cast tubes
of suitable lengths and thicknesses, varying according to the particular lengths
and thicknesses of the intended finished tubes; and these cast tubes, by
repeated annealing and drawing processes, have been extended or lengthened
out, as is well understood, and such tubes, after undergoing the last drawing
process, have been again annealed and then pickled or treated with dilute acid
to cleanse the surfaces from scale and other matters, and in this state, after
being washed, they have been used in steam boilers. Now according to my
present Invention the cast tubes, after having been extended by drawing
through a succession of dies or holes up to but not including the last process
of drawing, are (after being annealed) to be pickled or treated with diluted
acid, as heretofore practised after the last time of passing or drawing such
tubes through dies or holes; the tubes are then to be washed with cold water
and then boiled in water ten or fifteen minutes, the tubes are theu immersed in
a solution of soap for five or six minutes. I prefer to employ soft soap for the
purpose, and use the same at the rate of five pounds of soft soap to three gal-
lons of water. The tubes are then taken from the solution of soap and drawn
through the last die or hole, suds, or solution of soap, being caused to flow con-
stantly on to the parts of the tube as they come up to the die or hole through
which a tube is being passed. The brass tubes thus made are to be annealed
at their ends in order to prepare them for being fixed in boilers, and I anneal
them for a length of six inches at the ends which are to enter the smoke box,
and for about one and a half inches at the ends which enter the fire box, by
beating them at their ends to a red heat to the extent above stated. By
these means the tubes will be hard and smooth externally, and they will
be stiff and strong, and will give great stability to the boilers in which they
are used.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that what I claim is the
mode herein described of manufacturing brass tubes.
In witness whereof, I, the said Charles Green, have hereunto set my
hand and seal, this Twelth day of March, in the year of our Lord One
thousand eight hundred and fifty-two.
CHARLES (L.S.) GREEN.

page_text: AND BE IT REMEMBERED, that on the Twelfth day of March, in the
year of our Lord 1852, the aforesaid Charles Green came before our said Lady
the Queen in Her Chancery, and acknowledged the Specification aforesaid,
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.