IMPROVEMENTS IN THE APPARATUS USED IN THE CONCENTRATION OF SULPHURIC ACID
Year: 1845

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDEN
THOMAS JONES, of Bristol, Manufacturing Chemist, send greeting..
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters under the Great Seal of Great Britain, bearing date at West-
minster, the Twenty-seventh day of November, in the ninth year of Her reign,
did, for. Herself, Her heirs and successors, give and grant unto me, the said
Eden Thomas Jones, my exors, adiñors, and assigns, Her especial licence, full
power, sole privilege and authority, that I, the said Eden Thomas Jones, my
exors, adñiors, and assigns, or such others as I, the said Eden Thomas Jones,
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
APPARATUS USED IN THE CONCENTRATION OF SULPHURIC ACID;" in which said Letters
Patent is contained a proviso, that I; the said Eden Thomas Jones, shall cause a
particular description of the nature of my said Invention, and in what manner
the same is to be performed, to be inrolled in Her said Majesty's High Court
of Chancery within six calendar months next and immediately after the date.

page_text: 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
Eden Thomas Jones, 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 description thereof, that is to say:-
In the common process of concentrating sulphuric acid, when glass vessels
are used for that purpose, considerable inconvenience and uncertainty have
been experienced, from the frequent breaking of the glass vessels in the
operation, the consequent loss of the acid, to the great annoyance of the
neighborhood, and from the necessity of maintaining a high degree of tem-
perature in the laboratory for the purpose of defending the glass vessels from
all drafts or currents of cold air, which invariably prove so destructive to the
glass vessels when considerably heated.
To remedy these inconveniences attending the old process, I apply a vessel,
which I call a protector, of sheet iron or tin, or of any other suitable material
not liable to be injured by the heat of the process; the form of which is
immaterial; it may be cylindrical, or square, or of any other figure, provided
it completely envelopes the glass retort or vessel when at work. These covers
or protectors are for the purpose of defending the glass vessels from injury,
especially from currents of cold air. The covers or protectors are made from
four or five inches of greater diameter and height than the glass retorts, and
inclose a volume or atmosphere of hot air all round the retort during the
operation. By this means the process is shortened, a considerable saving
in fuel and labour is effected, and the glass vessels last longer.
would remark that I do not confine myself to the details here given so
long as the glass retorts used in this manufacture are protected when at work
by covering them so as to prevent the prejudicial effects arising from the
contact of cold air.
And I wish it to be understood that what I claim as my Invention is, the
protecting vessels of glass or glass retorts used in the concentration of sulphuric
acid for the purpose of defending them from the injurious effects of cold air,
as described.
In witness whereof, I, the said Eden Thomas Jones, have hereunto set
my hand and seal, this Twentieth day of February, in the year of our
Lord One thousand eight hundred and forty-six.
E. T. (Ls.) JONES.

page_text: AND BE IT REMEMBERED, that on the Twentieth day of February, in
the year of our Lord 1846, the aforesaid Eden Thomas Jones 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.
Enrolled the Twenty-seventh day of May, in the year of our Lord One
thousand eight hundred and forty-six.