IMPROVEMENTS IN MAKING INFUSIONS OF TEA, COFFEE, AND OTHER MATERIALS
Year: 1845

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDOUARD
LOYSEL DE LA LANTAIS, of Walsingham Place, Kennington Road, in the
County of Surrey, Engineer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Sixteenth day of January, in the eighth year of Her reign, did, for
Ierself, Her heirs and successors, give and grant unto me, the said Edouard
Loysel de la Lantais, Her especial licence, full power, sole privilege and
authority, that I, the said Edouard Loysel de la Lantais, my exors, adiñors,
and assigns, and such others as I, the said Edouard Loysel de la Lantais,
my exors, adñiors, 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 MAKING INFUSIONS OF TEA, COFFEE, AND OTHER MATERIALS;" in which
Letters Patent is contained a proviso that I, the said Edouard Loysel de la
Lantais, shall cause a particular description of the nature of my said Invnetion,
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 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.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Edouard Loysel de la Lantais, do hereby declare that the nature of my
Invention, and the manner in which the same is to be performed, are fully
described and ascertained in and by the following statement thereof, reference
being had to the Drawings hereunto annexed, and to the figures and letters
marked thereon (that is to say) :-
My Invention relates to improvements in arranging apparatus for making
infusions of tea, coffee, and other materials. And in order that the Invention
may be most fully understood. and readily carried into effect, I will proceed to
describe the means-pursued by me.
.
DESCRIPTION OF THE DRAWINGS.
Figures 1 and 2 shew two sections of apparatus suitable for making infusions
of coffee according to my Invention; Figure 3 is a plan thereof; Figures 4
and 5, showing some of the parts separately. a is the external vessel, which
is to be placed over a fire in order to heat the water. This vessel a has a
handle b and a spout c, the end of the spout being capable of being closed by a
plug or stopper d, the object of which will be hereafter explained. Instead of
a spout an ordinary tap may be employed. In the vessel a is fixed.the vessel
e, part of the lower portion of which at fis perforated with fine holes, and the
vessel e is divided into two compartments by the perforated strainer g, placed
over the lower compartment of the vessel e,. as is shown.h is a hollow float,
which rises when the extract flows into the vessel e, and thus indicates by the
stem h how much of the fluid is in that vessel. i is a vessel which is inverted,
and placed over the upper part of the vessels a and e, and the projection i¹
around the outside, together with the upper, part of the vessel i, produce a cover
for the vessel e, and there are slotted openings j, j, by which the inverted
vessel i can be fastened securely on the top of the vessel e, there being also an
opening at in the projecting flange i, for receiving the plug 7, such hole k
corresponding with the filling hole of the vessel a, the object of which will be
better understood when I come to describe the mode of using the apparatus.
Under the bottom of the vessel e, and communicating therewith at f, is affixed
a bent pipe n; this bent pipe ascends nearly to the top of the vessel a, and
descends nearly to the bottom thereof, all which is clearly shown in the
Drawing, and it is in, respect to the manner in which the water is caused to
flow into the vessel e by means of this bent tube, combined with suitable
vessels, that constitutes the novelty, of this part of my Invention. In using this
apparatus the vessel i is removed from the vessel e, and the vessel i becomes a
measure and a funnel for measuring and introducing the water into the vessel a.

page_text: When about to obtain an, infusion of coffee, the coffee (in a. ground state). is
to be put in the lower part of the vessel e, and it is to be covered by the
strainer g. The funnel i is then to be inserted into the filling hole of the
vessel a (as is, indicated for, that purpose, by dotted. lines, the stopper being
inserted into, the spout); cold water is to be introduced into the funnel i; but, as
it will not flow into the vessel a till the stopper is removed from the spout, the
filling of the vessel i may be accomplished to any desired extent, so as to
measure a proper quantity of water for the quantity of coffee put in the vessel
e, according as the extract is required to be stronger or weaker. The stopper
being removed from the spout the water will flow into the vessel a, when the
stopper is to be reinserted in the spout, and the float introduced into the
vessel e upon the perforated strainer 9, and the vessel i inverted and closed
over the vessel e, when the stopper is to be introduced through the opening k
of the inverted vessel i, into the filling opening in the top of the vessel a. The
apparatus in this condition is then to be placed on the fire, and the water
becoming hot, will, before boiling, cause the air contained between the two
vessels a and e to expand, which expansion, will force some of the water to
flow through the bent tube into the vessel e; and the heat being increased;
steam will be produced, the water will be forced thereby through the bent
tube and up through the coffee in the vessel e, the stem of the float indicating
how much of the water has flowed in. When the float. has risen up to the
highest point which is marked in the Drawing, the apparatus is to be removed
from the fire, and, by the cooling which will quickly take place in the vessel a,
the extract in the vessel e will, by the pressure of the air, flow back through
the ground coffee and into the vessel a, from which it may be poured as
wanted, the stopper being previously removed from the spout.
I will now describe the second part of my Invention, which is intended more
particularly for making infusions or extracts of tea and other materials. This
apparatus, so far as the use of the bent pipe or passage n, is similar to that
above described. Figure 6 shows a vertical section of apparatus constructed
according to this part of my Invention. s is a stand for the apparatus, and t
is a heater of iron, which is supported on a block of brick v, fixed in the stand,
as is shewn. Figure 7 shews a suitable vessel or funnel for introducing the
water into the outer vessel o, within which vessel o is fixed the vessel p; the
shape of these vessels have the outward appearance of a teapot, but the shape
may be varied. One end of the bent pipe n enters into the lower part of the
vessel p, the other end descending into the water in the vessel o to near its
bottom. At the bend of the pipe n is applied a cock or tap, the plug of which
is so formed as, when turned in one direction, to allow of the funnel Figure 7

page_text: being inserted in the opening q. Hot water being put into that funnel it will flow
into the vessel o, and when the, temperature of the water has been raised by
the heater steam will rush freely from the opening 9; the cock is then to be
closed, and the pressure of the steam contained between the outer vessel o and
the inner vessel p upon the surface of the water will cause the water to ascend
one limb, and then descend the other limb of the bent pipe n, and enter the
vessel p, and therein produce an infusion of tea. When the plug of the tap is
turned for receiving water into the vessel o, the passage between the two limbs
of the bent pipe n is closed; but when turned off or reversed, the communica-
tion between the two limbs of the bent pipe n is opened; r is a cover to the
vessel p. The details of the various parts shewn by the Drawing will enable a
workman readily to understand the nature of the same.
Having thus described the nature of my Invention, and the manner in which
the same is to be performed, I would remark, that I do not confine myself to
the details, so long as the peculiar character of either part of my Invention be
retained; but what I claim is, the mode of arranging the apparatus above
described for making infusions of coffee and tea, and other materials, by
applying the bent pipe or passage n with other suitable apparatus, as above
described.
In witness whereof, I, the said Edouard Loysel de la Lantais, have
hereunto set my hand and seal, this Tenth day of June, in the year
WILLS, Extra.
E. J. LOYSEL (L.S.) DE LA LANTAIS.
AND BE IT REMEMBERED, that on the Tenth day of June, in the year
of our Lord 1845, the aforesaid Edouard Loysel de la Lantais 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 Eighteenth day of June, in the year of our Lord Onc
thousand eight hundred and forty-five.