Improvements in Apparatus. for Making Infusions.
Year: 1888

page_text: Date of Application, 10th Oct., 1888
Complete Specification Left, 3rd Aug., 1889-Accepted, 5th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus. for Making Infusions.
I, JAMES CHILDS, of Cedar Lea Clapham Common in the County of Surrey,
Gentleman, do hereby declare the nature of this invention to be as follows:-
In the Specification of a former Patent No. 13726 in the year 1887 was described an
apparatus for making infusions. In this apparatus the material to be infused was
placed into a holder which was above the top of a receiver in which the infusion was
collected. The bottom of the holder was perforated and had a disc of felt or fleecy
fabric placed over it for the material to be infused to rest on.
The holder was carried by its cover which was fixed at the end of a hollow.arm
through which boiling water from a boiler maintained under light pressure could
be introduced and caused to pass downwards through the material into the receiver,
an air valve being provided to allow air to escape from the receiver-this valve
was closed by a float when the receiver filled. The apparatus was also so con-
structed that the hollow arm extended radially from the plug of a tap carried at
the top of a standard which formed the water supply pipe and the tap was so formed
that when the hollow arm was turned around the standard into one position boiling
water passed to the receiver and when turned into another position the passage of
boiling water to it was shut off.
With this apparatus the infusion was made as the liquid passed through the holder
to the receiver.
The object of my invention is to construct apparatus of this kind in such manner
that the material to be infused may be placed within the receiver itself and the
receiver be filled with boiling water and the material allowed to remain immersed in
the water for any desired length of time before the infusion is drawn off from it.
To effect this I provide the receiver with a perforated false bottom (preferably
hemispherical to give a large amount of perforated surface) and in some cases place
felt or fleecy fabric on to this false bottom.
When the material to be infused has, been placed on to the top of the fabric or
perforated false bottom and the receiver has been locked to the cover as described
in the before mentioned Specification the arm which carries the cover is turned
around the standard into a position for boiling water to pass from the standard
into the receiver- the receiver is in this way quickly filled with boiling water.
When the material in the receiver has been immersed in the water for a sufficient
length of time the hollow arm with the receiver is turned into another position
around the standard in which position steam can pass to the top of the receiver
from the steam casing of the standard by which the water supply pipe from the
boiler is surrounded-or steam or it might be air under pressure may be admitted
in other ways to the top of the receiver. If the tap at the bottom of the receiver
be then open the infusion will by the slight pressure of steam above it.be forced
downwards through the receivers perforated false bottom and through the outlet tap
and be so quickly drawn off.
Dated this 10th Jan
L 1000

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Making Infusions.
I, JAMES CHILDS of Cedar Lea Clapham Common, in the County of Surrey,
Gentleman, 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 :-
In the Specification of a former Patent No. 13726 in the year 1887 was described
an apparatus for making infusions. In this apparatus the material to be infused was
placed into a holder which was above the top of a receiver in which the infusion was
collected. The bottom of the holder was perforated and had a disc of felt or fleecy
fabric placed over it for the material to be infused to rest on.
The holder was carried by its cover which was fixed at the end of a hollow arm
through which boiling water from a boiler maintained under light pressure could be intro-
duced and caused to pass downwards through the material into the receiver, an air
valve being provided to allow air to escape from the receiver-this valve was closed by
a float when the receiver filled. The apparatus was also so constructed that the hollow
arm extended radially from the plug of a tap carried at the top of a standard which
formed the water supply pipe and the tap was so formed that when the hollow arm
was turned around the standard into one position boiling water passed to the receiver
and when turned into another position the passage of boiling water to it was
shut off.
With this apparatus the infusion was made as the liquid passed through the holder
to the receiver.
The object of my invention is to construct apparatus of this kind in such manner
that the material to be infused may be placed at the lower part of the receiver and the
receiver be filled with boiling water and the material allowed to remain immersed in
the water for any desired length of time and in such manner that when the tap at the
bottom of the receiver is opened to draw off the infusion the infusion is driven through
the filter surface on which the material rests by the pressure of steam from the boiler
or it might be by air under pressure.
The drawing hereunto annexed shews apparatus constructed according to my inven-
tion. Figure 1 is a vertical section of the apparatus and Figure 2 a plan view of the
removeable bottom of the receiver.
A is a hollow standard kept filled with steam from a steam boiler under light
pressure. B is a pipe led up through the standard from below the water level in the
steam boiler.
A' is a passage leading from the interior of the standard to one side of it and B' is
a passage similarly leading from the top of the pipe B to the opposite side of the
standard. C is a conical ring embracing the standard where theso passages pass to
its sides. D is an arın extending from the ring and carrying at its end the receiver E.
F is a removeable bottom to the receiver-it is made to fit fluid tight against the
underside of a flange E' which surrounds the lower part of the receiver and is held up
to it by projections F1 which extend from it engaging with lugs E which project
downwards from the flange E¹. The under surfaces of the projections F¹ and the part
of the lugs which these surfaces bear against are made inclined so that by giving a
partial turn to the moveable bottom this bottom may be drawn tightly against the
under side of the flange and a tight joint made between them.
D' D are two passages formed through the arm D-the end of one of them D¹ can
by turning the ring around the standard A be brought opposite to the end of
the steam passage A¹-the other passage D² can similarly be brought opposite
the passage B-the passage D' is carried up to the upper part of the receiver
and the passage D' to the lower part of the removable bottom. Within the removable
bottom is a perforated false bottom G above which may be placed a disc of felt or
fleecy fabric H which may be held in place by a perforated grating G₁ placed above
it-above this there is sufficient space to contain the quantity of material used each

page_text: time that an infusion is made-D³ is a draw off tap on the underside of the removable
bottom-I is a small outlet for air at the top of the receiver. J is a valve by which
this outlet can be closed. K is a float for lifting the valve. L is a weighted catch
which comes below a projection on the stem of the valve whenever the valve is raised
and then completes the lifting of the valve and holds it up to its seat the weight being
sufficiently heavy to overcome the weight of the float. M is a perforated plate
passing across the upper part of the receiver just below the float-0 is a cloth held
against the underside of this perforated grating to prevent any of the material or
grounds being carried up to the float or valve. P is a tap in the arm D by which the
passages in the arm D can be opened or closed at pleasure.
The apparatus is used in the following manner.
When the requisite quantity of material from which an infusion is to be made has
been placed on to the perforated false bottom carried by the removeable bottom F.
This removable bottom is placed against the lower part of the receiver and a partial
turn is then given to it to cause the projections to engage with the lugs E³.
The radial arm D is then turned into the position shewn at Figure 1 and boiling
water passes into the receiver. When the receiver is nearly full the float raises the
valve J and closes the air outlet and the valve is held in its closed position by the
weighted catch above mentioned.
When the boiling water has remained for a sufficient length of time on the material
the arm D can be turned into position for the passage D' to be brought opposite to the
steam passage A¹. Then when the draw off tap D3 is opened the pressure of steam
acting on the top of the fluid in the receiver presses it down through the filter surface
carried by the perforated false bottom of the receiver.
In place of the arm D being made capable of swivelling around a standard as shown
in the drawing it might be fixed to it and the steam passages A' D' and the water
passages B¹ be permanently opposite one another. In this case the tap P might be so
formed that when turned into one position both the steam and water passages should
be closed and when turned into a second position the water passage opened and in a
third position the water passage closed and the steam passage open.
Or in cases where a number of vessels for making infusions are required in place
of each vessel being carried by a separate standard any desired number of vessels
might be carried each by a separate arm extending from a hollow horizontal bar.
In place also of the steam passage to the upper part of the receiver being carried
through the arm by which the receiver is carried it might but not so advantageously
be a separate pipe led to the upper part of the receiver from the steam space of
the steam boiler and fitted with a tap by which the passage of steam through it
may be controlled.
Or as before stated air under pressure might be used in place of steam for forcing
the infusion through the filter surface when the draw off cock is opened.
I would also state that in place of employing a float to lift and close the air valve J
previous to steam or air under pressure being admitted to the upper part of the
receiver other means might be adopted for opening and closing the valve and for
indicating when sufficient water had entered the receiver.
Having now 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
1. The construction of apparatus for making infusions substantially in the manner
hereinbefore described.
2. The receiver formed with a passage for boiling water to be admitted to it
from the boiler and a passage for admitting steam and formed with a removeable
bottom which is fitted with a draw off cock and which has within it a perforated
false bottom.
3. The receiver with removable bottom carrying within it a perforated false bottom
and formed with a passage for admitting boiling water below the false bottom and
a second passage for admitting steam to its upper part and provided with a valve

page_text: to allow escape of air when the receiver is being filled with water and to be closed.
when steam. or air under pressure is admitted.
4. The receiver, with passage for boiling water to be admitted to it and passage
for admitting steam and with an outlet valve for, allowing air.to pass, from the
receiver as it is being filled with boiling, water and with a float and weighted catch
for closing and keeping closed the valve when the receiver has been filled."
5. The receiver. carried by an arm having two passages through it one for admitting
Doiling water below the perforated false bottom the, other. for admitting steam to the
op of the receiver and formed with a tap or taps for closing these passages and with a
draw off cock.
6. The receiver carried by an arm having two passages through it one for steam
and one for water and formed with a removable bottom which is fitted with a perforated
false bottom and draw off cock below this faise bottom and is also formed with suffi-
cient space above the perforated false bottom, to allow of its holding the quantity of
material required to be used for making one infusion.
Dated this 3rd day of August 1889.
CARPMAEL & Co.,
Agents for the Applicant.