Improvements in Vessels for Making Infusions or Decoctions.
Year: 1891

page_text: Date of Application, 2nd Oct., 1891
Complete Specification Left, 2nd July, 1892-Accepted, 6th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Vessels for Making Infusions or Decoctions.
I, WILLIAM WHEATCROFT HARRISON of Montgomery Works, Sheffield in
the County of York, Manufacturer, do hereby declare the nature of invention
to be as follows:- "
my
This invention refers more particularly to coffee pots, tea pots, and such like
vessels, the object being to construct or provide in combination with the vessel,.a
container or perforated receptacle to hold the tea, coffee or other substance, and so
arranged that it can be lowered into or passed through the hot water required for
the infusion, and be withdrawn when desired, and that can be otherwise utilised.
In its application to a coffee urn or pot for example, I prefer to make interior of
the body cylindrical, and the perforated receptacle of a corresponding shape to fit
loosely inside, and so that it can he moved vertically from the top to the bottom,
or thereabouts. Its lowest position is defined by a projecting ledge inside the body.,
upon which the top edge of the receptacle.rests, and by which it is supported a
short distance from the bottom.
The receptacle when made in a circular form is prevented turning round by one
or more vertical guides on the sides of the vessel, and it may be raised or lowered to
any point by means of a quick-thread screw held vertically and centrally from the
bottom of the vessel, which passes through a nut in the centre of the receptacle,
and which can be turned by means of a knob or button placed either inside or
outside the lid of the vessel.
When the receptacle is charged with coffee and the lid closed, it may be put
upon the screw-and lowered to any desired distance, and the hot water poured in,
this passes through the perforations and the coffee to the underside, the receptacle
is then screwed down which forces the water to rise through the receptacle again.
The liquid may now be drawn off through the tap or spout from the underside
which causes it to pass through the coffee again, or the receptacle may be removed
from the pot if preferred.
In its application to an ordinary tea pot, I simplify the construction, by attaching
the perforated receptacle for the tea, to a screw which passes through the lid and
the knob. The knob can be turned round, and constitutes a revolving nut, and
as the screw by being made square, or by other means is prevented turning, it is
raised and lowered by revolving the knob, in the direction required.
Although I have described a screw as the means of raising the receptacle,
equivalent means may be employed, and instead of perforated plate, wire gauze may
be used for the receptacle.
COMPLETE SPECIFICATION.
Improvements in Vessels for Making Infusions or Decoctions.
I, WILLIAM WHEATCROFT HARRISON of Montgomery Works, Sheffield in
the County of York, Manufacturer, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly describeḍ and
ascertained in and by the following statement :-
This invention refers more particularly to coffee pots, urns, tea pots and such
like vessels used for making infusions, the object being to combine with the vessel
a container or perforated receptacle to hold the tea, coffee, or other substance, so

page_text: arranged and contrived that it can be lowered into, or passed through the hot water
in the vessel or pot, and that can be withdrawn up out of the liquid when desired so
as to prevent further action.
The invention is illustrated in the annexed sheet of drawings, in which like letters
of reference indicate like parts in any of the figures in which they may occur.
i
Fig. 1, is a seotional elevation of a tea urn pinde according to my invention.
Fig. 2, is a similar view of an urn of a modified construction.
Fig. 3, section of a teapot showing how the invention may be applied thereto..
Fig. 4, section of a teapot, showing a very simple adaptation of my invention.
In carrying out my invention as applied to a tea urn (or other vessel) as
illustrated in Fig. 1. I make the interior of the body A, cylindrical, oval or of a
similar shape and the perforated container B, of a corresponding shape to fit loosely
inside and so that it can be moved vertically from top to bottom, or be taken out
when desired.
In some cases I form a ledge C, in the body of the pot, upon which the top edge
of the container will rest when in its lowest position. The container in this case
being of a circular form it is prevented turning round in the body of the vessel by
one or more vertical guides. D, secured to the sides of the vessel, and it, is raised
and lowered to any point. by means of a quick-thread screw E, fitting into the
bottom but free to revolve, the, rotary action being given by the knob F, which
engages with the squared end of the screw when the lid G, of the urn is placed in
position.
The screw E, passes through a nut H, fixed in the centre of the container,
II are wings upon the lid of the container by which it is screwed and unscrewed.
It will thus be seen that when the tea is placed in the container the lid is screwed
down and the container passed over the top end of the screw, the lid of the urn
placed in position and, the knob F, turned round by which, action, the perforated
container is gradually forced through the boiling water in the urn to the bottom,
after a suitable time has elapsed the knob. is turned in the opposite direction and
the container raised to the top of the urn out of the infusion.
In Fig. 2, I have shown a different way or modus operandi of arriving at a like
result, in this arrangement I have used a. perforated container B, without a lid,
having a fixed central tube J, fitting loosely over an inner tube or rod. K, fixed to
the bottom of the inside of vessel.
The outer tube has a slot L, and the inner tube, or rod, has. a pin or stud.M,
forming what is known as a bayonet joint, thus when the lid G is raised, the
container may be raised by means of, the tube, and, retained by turning it round
until the pin enters the lateral slot N.
In Fig. 3, the container B, slides in a cylindrical part P, of the vessel, which
prevents the escape of tea leaves into the body of the pot; when sufficient time
has elapsed to mash the tea, the container is drawn up into the cylinder P, by means
of the screw E, which passes through the nut H, and, is turned by the knob F,
which rises with it above the lid; or the nut may be attached to and form part of
the knob F, and be revolved, causing the screw to rise and pass through it.
Fig. 4, shows, a very simple arrangement of the invention, in which the container
is made to fit as tightly into the cylindrical part P, which may if desired constitute
the body of the teapot or vessel as is necessary to retain it in any desired position,
and it is simply moved up and down as required by the rod Q, connected with the
knob. F, or if desired the: rod may be short, or an equivalent appliance may be
substituted, by means of which when the lid G, is removed the, container may be
raised above the water in the pot.
Having now particularly described and ascertained the nature of my inven-
tion and the manner in which the same is. to be. performed, I declare that what I
claim is:-.
-The combination with a teapot or other like vessels for infusions, of
container to hold thaiten on 'ather material counble of haine raised or lowered, hv a

page_text: quick thread screw fitting into the bottom of the vessel, passing through a nut.
attached to the container, and operated by the knob of the vessel, substantially as
hereinbefore described, and with reference to Fig. 1, of the drawings.
2-The combination with a tenpot or other like vessels for infusion, of a
container to be raised or lowered directly upon a central rod or tube passing
centrally through it, with means of support when at its highest position, sub-
stantially as hereinbefore described, and with reference to Fig. 2 of the annexed
drawings.
3-A teapot or other like vessel prepared with a depending cylindrical or other
shaped part P, in combination with a container B, fitting therein, and capable of
being raised by means of a vertical screw E, passing through a fixed or revolving
nut H, substantially as hereinbefore described, with reference to Fig. 3, of the
drawings.
4-A teapot or other like vessel having the sides of its body vertically parallel.
or made with a vertical chamber with a lid or cover and having a perforated
container for tea and the like, fitting therein and capable of being moved up and
down the said chamber or body as the case may be by any suitable appliance or
device for the purpose specified and substantially as hereinbefore described with.
reference to Fig. 4, of the drawings.
Dated the 20th day of June 1800
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.