IMPROVEMENTS IN OBTAINING INPUSIONS OR EXTRACTS FROM COFFEE AND OTHER MATTERS
Year: 1847

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
CAREY, of Church Yard Row, Newington Butts, in the County of Surrey,
Gentleman, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twenty-sixth day of
October, One thousand eight hundred and forty-seven, in the eleventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Charles Carey, my exors, admors, and assigns, Her especial
licence, full power, sole privilege and authority, that I, the said Charles Carey,
my exors, admors, and assigns, or such others as I, the said Charles
Carey, 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 OBTAINING INPUSIONS OR EXTRACTS FROM COFFEE AND OTHER
MATTERS;" in which said Letters Patent is contained a proviso that I, the
said Charles Carey, shall cause a particular description of the nature of
my said Invention, and in what manner the same is to be performed, by an

page_text: DESCRIPTION OF THE DRAWING.
Figure 1 shews an apparatus constructed according to my Invention ;
Figure 2 is a section; Figure 3 is a plan, with the top or cover and moveable
strainer removed; and Figure 4 shews a plan of the moveable strainer sepa-
rately. The apparatus shewn is for obtaining infusions or extracts from coffee
or other matters, suitably arranged or constructed for being placed on a fire or
over a lamp. And I would state, that the shape of the apparatus may be
varied, so long as the peculiar mode of construction or combination of the
parts be retained. a, a, is the external vessel; b is the spout to pour off the
infusion or extract; and c, the cover of the vessel a. Within the vessel a, a
second vessel d, which has at its lower part a finely-perforated plate e, below
which descends the tube f nearly to the bottom of the vessel a, as is shewn;
hence, there is no passage for fluid from the upper to the lower part of the
vessel a, except through the vessel d and the tube f. Over the vessel d is
than the one at e),
placed a moveable strainer 9 (more coarsely perforated
g
which, when in its place, is securely held by the projections g¹ passing under
the small projecting plates h, fixed to the vessel a. When using this appa-
ratus hot or cold water is to be poured into the vessel a, until it comes up to
the lower strainer e, and no higher, as is indicated by the Drawing. Into the
vessel d is to be placed the ground coffee or other matter, from which an infusion
or extract is to be obtained, and the perforated strainer g fastened into its
place, by which the coffee or other matter will be confined in the vessel d;
and i is a cork, which, when the water is boiling, is to be placed in the spout.
In using this apparatus, if cold water is employed, it should be first boiled in
the vessel a (just as in any other open vessel), before charging it with coffee or
putting in the cork, because if the ground coffee remains exposed over the fire
while the cold water is being boiled up, some slight portion of its delicate

page_text: aroma will be lost; indeed, it is at all times as well to heat the water in the
vessel a (even should boiling water be used) before putting in the coffee or
the cork. After the coffee is put in and the spout corked, the less fire given
the more delicate will be the infusion, as the object is not to boil it over again,
which would injure it, but merely to expand the volume of air confined above
it. It should be put on as little fire and as clear as possible, and no flame
should be allowed to rise around the sides of the pot, which, during the action,
remains partly empty of water. Continuing the heat for a short time after the
cork has been introduced, the water will rise up quietly through the tube f,
through the coffee, and up above the moveable strainer g; and immediately on
any evidence of bladders being formed, which will indicate that all the water
above the lower end of the tube has come up, and that air is following, the
apparatus is to be removed from the fire, or the lamp (when one is used) put
out. The pressure of the outer atmosphere will then come into action upon
the liquid, on account of the partial vacuum below, as the lower part of the
vessel a and the air therein cools; and the extract or infusion will be pressed
back through the coffee or other matter confined in the vessel d into the lower
part of the vessel a. The cork is then to be removed, and the extract or
infusion may be poured through the spout, and this will be facilitated by the
ir tube j.
Having thus explained the nature of my Invention, I would state, that I am
aware that various apparatus have before been made for obtaining extracts or
infusions from coffee and other matters by the aid of forcing, water through
them, and then filtering back by atmospheric pressure into a partial vacuum.
I do not therefore claim such means of obtaining extracts or infusions gene-
rally, but only the arrangement herein described. And I would state, that in
the apparatus above explained it will be seen that there is a space between the
vessel d and the vessel a above the water in the vessel a, which space is filled
with air, and such air on the spout being closed expands, and thus is the
water caused to flow up through the coffee contained in the vessel d, as above
explained. And I would wish it to be understood that what I claim as my
Invention is the mode of combining a vessel d with strainers e and 9 within a
vessel a, having an air space to act, as herein described.
In witness whereof, I, the said Charles Carey, have hereunto set my
hand and seal, this Nineteenth day of April, in the year of our Lord
One thousand eight hundred and forty-eight.
CHAS (L.S.) CAREY.

page_text: AND BE IT REMEMBERED, that on the Nineteenth day of April, in the
year of our Lord 1848, the aforesaid Charles Carey came before our said
Lady the Queen in Her 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 s
tenor of the Statute made for that purpose.
Eurolled the Twenty-sixth day of April, in the year of our Lord One
AZONSTANT