AN IMPROVED APPARATUS FOR EVAPORATING SYRUPS AND SACCHA; RINE JUICES, WHICH IS ALSO APPLICABLE TO OTHER PURPOSES
Year: 1833

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ANDREW
URE, of 13, Charlotte Street, in the Parish of Saint George, Bloomsbury, in
the County of Middlesex, Doctor of Medicine, send greeting.
WHEREAS His present most Excellent Majesty King William the
Fourth, by His Letters Patent under the Great Seal of Great Britain, bear-
ing date at Westminster, the. Twentieth day of June, One thousand eight
hundred and thirty-three, and in the third year of His reign, did, for Himself,
His heirs and successors, give and grant unto me, the said Andrew Ure, Ilis
especial licence, full power, sole privilege and authority, that I, the said
Andrew Ure, my executors, administrators, and assigns, or such others as I,
the said Andrew Ure, my executors, administrators, 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 mentioned, should and lawfully might make, use,
exercise, and vend, within England, Wales, and the Town of Berwick-upon-
Tweed, and also in all His Majesty's Colonies and Plantations abroad, my
Invention of "AN IMPROVED APPARATUS FOR EVAPORATING SYRUPS AND SACCHA;
RINE JUICES, WHICH IS ALSO APPLICABLE TO OTHER PURPOSES;" in which said
Letters Patent is contained a proviso obliging me, the said Andrew Ure, by
an instrument in writing under my hand and seal, to 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 His 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 there-
unto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Andrew Ure, do hereby declare that the nature of my said Invention for

page_text: evaporating syrups and saccharine juices, which is also applicable to other
purposes, to be a chemical apparatus wherein certain chemical menstrua are
made to serve as agents for regulating and modifying the operation of caloric
or heat upon various forms of matter, and whereby the influence of high tem-
peratures on these forms of matter may be obtained in definite degrees without
the accidents and dangers to which steam and oil as media of heat are liable.
This combination of chemical menstrua, with suitable vessels for containing
and applying them, I denominate my improved apparatus. And in further
compliance with the said proviso, I do describe the manner in which my said
Invention is to be performed, by the following explanation thereof :-
First, I fix one pan within another so as to leave an intermediate space
between the two pans, into which space I put my hot-bath liquid medium
consisting of a strong solution of caustic potash or caustic soda, or of a mix-
ture of these two alkalis. The purer the said simple or compound alkaline
solution is so much the better; but it will form a good calorific medium,
though it may contain a little carbonated alkali, neutro-saline matter, or other
impurity. When the inner pan has the surface of its bottom, or of its bottom
and sides, amplified by corrugation with angular or curvilinear ridges and
furrows, it constitutes the form of the double-pan apparatus, which I prefer
for evaporating syrups, saccharine juices, and in general all liquids which
require to be heated under a regulated temperature, or are injured by exposure
in a single pan to the heat of a naked fire. A double pan of this kind covered
with a proper capital will constitute an excellent alembic for the distillation of
fermented worts or wash, especially those containing rye. The bath space of
the said double pan should be provided with a safety tube for discharging any
redundant steam which may occasionally proceed from the medium by undue
firing. The upper extremity of this tube should terminate in a water trap or
water valve, so as to cut off the open communication between the bath and
the atmosphere, because the carbonic acid in the air would eventually carbo-
nate the alkaline solution, and impair its properties as a liquid-bath medium.
To each double bath pan I attach one or more thermometers, having their
bulbs plunged into the medium in order to show its temperature; and as the
boiling temperature of the alkaline solution depends on its state of dilution, I
regulate that temperature by introducing a little water into the bottom or
centre of the bath through a perforated pipe plunged into it, and connected at
its top with a funnel or cistern of any kind. To ensure permanency to the
constitution of the alkaline bath, the water valve or water-trap cistern attached
to the end of the safety pipe above specified should be charged with water
mixed with lime, kept in a milky state by continual agitation. The said
medium may also be applied to evaporation, to oven heating, and to other pur-