Improvements in and relating to Apparatus for Infusing Tea, Coffee, and the like.
Year: 1895

page_text: Date of Application, 14th Oct., 1895
Complete Specification Left, 14th July, 1896-Accepted, 15th Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in and relating to Apparatus for Infusing Tea,
Coffee, and the like.
1, JAMES CHAPMAN, Junior, of Ashcliffe, West Newport, in the County of Fife,
Scotland, Confectioner, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in and relating to apparatus for infusing
tea, coffee and the like, the object being to extract the stimulating and refreshing
constituents with the least possible amount of deleterious matter, such extract
preferably being in a concentrated state.
In carrying out my invention I employ a vessel whose bottom is perforated with
small holes, the number of such holes being in proportion to the size of the vessel,
the quantity of material treated, and the time the infusing liquid, such as hot water,
is to act.
When tea is to be infused, a sufficient quantity is placed in the vessel after which
a perforated plate may be placed in position near its mouth and the hot water
poured over the tea, the purpose of the perforated plate being to cause the water
to fall on such tea in the form of spray. When a sufficient quantity of water has
been poured into the infuser, such infuser is covered with a lid in order that the
aroma of the tea may be retained. The infusion is allowed to fall into a vessel,
and while this is happening the whole combination is covered by a "cosey" in order
that there may be no loss of heat from the water in the infuser. The infusion
may be much stronger than that ordinarily drunk and it may be kept for some
time, that is to say sufficient extract may be made at one operation to last a family
for one or more days. When used at table a small quantity of the infusion is
diluted with hot water and then treated in the usual way. I find from certain
experiments I have made and from chemical analysis of infusions that strong
extracts of the wholesome elements of ten may be obtained in this manner, the
quantity of such deleterious matter as tannin being very limited.
When infusing coffee an almost similar infuser is used, although the number of
perforations in its bottom is greater in proportion than in the tea infuser, and a
plate is employed to keep such coffee from coming in direct contact with the
bottom, in this manner keeping such perforations from choking. When using
coffee it is essential that the hot water should fall on it in the form of spray. The
infuser may be made of any suitable material such as silver, tin, aluminium or other
metal, or of carthenware.
Dated this 11th day of October 1895.
GEO. C. DOUGLAS & Co.,
41 Reform Street, Dundee, Agents for Applicant.

page_text: Improvements in and relating to Apparatus for Infusing Toa,
Coffee, and the like.
I, JAMES CHAPMAN, Junior, of Ashcliffe, West Newport, in the County of Fife,
Scotland, Confectioner, 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 :—
This invention relates to improvements in and relating to apparatus for infusing
tea, coffee and the like, the object being to extract the stimulating and refreshing
constituents with the least possible amount of deleterious matter, such extract
preferably being in a concentrated state.
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood. 1 have hereunto
appended three explanatory sheets of drawings in which the same reference
mumerals are used to indicate corresponding parts in all the figures where shown.
Figure 1. is a sectional view of a tea infuser showing how it may be applied to a
ten pot.
Figures 2, and 3. are respectively, cross-sectional plans at A. A. and B. B.
(Figure 1).
Figure 4, is a sectional view of a coffee infuser showing how it may be applied to
a coffee pot.
Figures 5, and G. are respectively a plan and a side view of the additional
strainer required when coffee is being infused.
Figure 7. is a view showing how the infuser may be attached to its pot, while
Figure 8. is a cross-section at C. C. (Figure 7).
Figures 9. and 10, show in side elevation and plan respectively another method
of attaching the infuser to its pot.
In carrying out my invention employ a vessel 20, whose bottom 21. is perforated
with small holes 22. the number of such holes being in proportion to the size of the
vessel, the quantity of material treated, and the time the infusing liquid, such as
hot water, is to act. The cylindrical portion of the infuser which is illustrated in
the drawings is about 3 in diameter and 6" long and has about sixteen holes of
an inch in diameter in its bottom at 21, such an infuser keeping the hot water in
contact with, say the ten to be infused, for a period varying from three to ten
minutes according to the quantity of such tea treated.
When tea is to be infused, a sufficient quantity is placed in the vessel at 23.
after which a perforated plate 24. may be placed in position near its mouth and the
hot water poured over the ien, the purpose of the perforated plate being to cause
the water to fall on such ten in the form of spray. When a sufficient quantity of
water has been poured into the infuser, such infuser is covered with a lid 25. in
order that the aroma of the tea may be retained. The infusion is allowed to fall
into a vessel and while this is happening the whole combination is or may be
covered by a *6 cosey in order that there may be no loss of heat from the water in
In the drawings the "coscy is not shown. The infusion may be
much stronger than that ordinarily drunk and it may be kept for some time, that
is to say sufficient extract may be made at one operation to last a family for one
or more days. When used at table a small quantity of the infusion is diluted with
hot water and then treated in the usual way. I find from certain experiments
have made and from chemical analysis of infusions, that strong extracts of the
wholesome elements of tea may be obtained in this manner, the quantity of such
deleterious matter as tannin being very limited.
the infuser.
"
When infusing coffee an almost similar infuser is used, although the number of
perforations may or may not be greater in proportion than in the tea infuser, and

page_text: a plate 26. is employed to keep such coffee from coming in direct contact with the
bottom, in this manner keeping such perforations from choking.
When using
coffee it is essential that the hot water should fall on it in the form of spray. The
infuser may be made of any suitable material, such as silver, tin, aluminium or
other metal, or of earthenware. In the drawings I have illustrated metal infusers.
The advantage of making the perforated bottom 21. of the contracted form shown,
especially when infusing coffee, is that the longer the water is kept in contact with
such coffee the better the extract will be.
Sometimes it is advisable that the infuser should be capable of being attached
to its pot, and Figures 7. and 8. show how I prefer to do this. A pin 27. fixed to
the pot engages in a slicket 28, in the infuser, the combination forming a bayonet
joint. As long as the infuser is in the position shown in the drawings it cannot
be removed, but by giving it a slight turn it can be lifted clear of such pot.
Figures 9. and 10. show another modification for attaching the infuser to its
pot, 30. being the pins and 31. the slickets.
I wish it to be particularly understood that I do not limit myself to the precise
details of construction herein before described and illustrated on the annexed
drawings, but that I hold myself free to make such changes and alterations as
conform with the disposition and scope of my invention. The same appliance may
be used in combination with tea urns or other vessels for the extraction of a large
quantity of extract.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1.) In infusers for tea, coffee and the like, the combination and arrangement of
parts consisting of the vessel 20. with perforated bottom 21, sprayer 24, lid 25,
and pot 29, substantially as described.
(2.) In infusers for tea, coffee and the like, the combination and arrangement
of parts consisting of the vessel 20. with perforated bottom 21, sprayer 24, lid 25,
perforated plate 26, and pot 29, substantially as described.
(3.) In infusers for tea, coffee and the like, the detachable joints illustrated by
Figures 7. 8. 9. and 10, substantially as described.
Dated this 10th day of July 1896.
GEO. C. DOUGLAS & Co.,
41 Reform Street, Dundee, Agents for Applicant.