Preparing a Dry Saccharated Extract of Tea, from which a Cup of Tea can be Made in a Few Seconds by the Addition of Boiling Water.
Year: 1887

page_text: Date of Application, 21st Mar., 1887
Complete Left, 21st Dec., 1887
Complete Accepted, 20th Jan., 1888
Preparing a Dry Saccharated Extract of Tea, from which a Cup of
Tea can be Made in a Few Seconds by the Addition of Boiling
Water.
I THOMAS KERFOOT Manufacturing Pharmaceutical Chemist Berry Street London
Road Manchester do hereby declare the nature of this invention to he as follows:-
Good sound Tea, is exhausted by infusion in boiling distilled water and the clear
infusion so obtained is evaporated at a low temperature by means of a water bath,
or preferably in Vacuo, until it has the consistency of a thin extract, this extract is
then mixed with coarsely powdered loaf sugar in the proportion of one pound of
sugar to every pound weight of Tea used. The mixture of sugar and extract is then
spread upon glazed earthenware plates to a depth of about half an inch, and dried in
a hot air chamber at a temperature of about 80 degrees Fahrenheit.
When dry the cakes of saccharated extract are easily turned out of the dishes, and
the cakes can then be cut into square pieces, or reduced to powder, in either of which
conditions, the extract will keep good, and retain the full flavour of the fresh infusion,
for an indefinite period.
"

page_text: Preparing a Dry Saccharated Extract of Tea, from which a Cup of
Tea can be Made in a Few Seconds by the Addition of Boiling
Water.
THOMAS KERFOOT of Medlock Vale Works, Berry Street, London Road,
Manchester do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement:-
To prepare my Dry Saccharated Extract of Tea. I take any convement quantity
of good sound leaf tea of commerce and having exhausted it by infusion in boiling
water I carefully separate the clear infusion from the leaves. The clear infusion so
obtained is then evaporated at the lowest possible temperature preferably in vacuo
until it begins to thicken or reaches the consistency of a thin Extract, this Extract is
then mixed with coarsely powdered loaf sugar in the proportion of one pound of
sugar, more or less, to every pound of ten used. I do not limit myself to the quantity
of water wherein to infuse the tea in the first instance but I prefer an infusion of
about double or treble the strength which has hitherto been used for domestic pur-
poses, nor do I confine myself to the exact proportion of sugar bereinbefore
imentioned as the same may be varied without departing from my invention.
mixture so produced is then spread upon glazed earthenware dishes or plates of any
other suitable material and dried in a hot air closet heated to about 80% Fahrenheit
or may be dried in any warm well ventilated chamber from which the moisture can
readily escape. When dry the resulting cakes of Saccharated Extract are either cut
into pieces of convenient size for use or are reduced to powder in either of which
conditions the Extract will keep good and retain the flavour of the tea from which it
has been prepared.
The
I claim as an advantage that tea prepared in the form of a dry saccharated extract
as aforesaid will keep for an indefinite period and in any climate and that whereas in
preparing tea direct from leaf tea in the ordinary manner it has hitherto been neces-
sary to have boiling water and a lengthened time for infusion my Saccharated Extract
will dissolve instantly in either boiling, tepid or cold water. This property renders
it very useful for travellers, invalids" and others who require a quick preparation
of tea.
Having thus particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that
what I claim is :-
1st. The manufacture of a dry saccharated extract of tea substantially as and for
the purpose hereinbefore described.
2nd. The method of treating tea so as to produce a dry saccharated extract of the
same substantially as and for the purpose hereinbefore described.
Dated this 20th day of December 1887.
JOHN G. WILSON,
Agent for the Applicant,