Year: 1888

page_text: I JOHN CHARLES BAYLEY of Dene House, Bournemouth, Ironmonger &c. do horoby
declare the nature of this invention to be as follows:-
This invention relates to apparatus for use in making an infusion or decoction of tea,
coffee or any other substance, and has for its object to obtain an automatic and nearly
continuous circulation of the boiling liquid through the tea, coffee, or other substance
whereby the qualities of the latter are more quickly and thoroughly extracted.
To this end the invention consists in the combination with a vessel having an upper
compartment separated from the lower part by a strainer, of a contrivance whereby the
boiling liquid. will be automatically forced up from the lower compartment and
discharged upon the coffee, tea, or other substance contained in the upper compartment
whence, descending through the strainer. it returns to the lower compartiment
carrying with it the extractive qualities of the tea, coffee, or other substance.
The contrivance whereby this circulation is maintained consists of a weighted bell
chamber or plunger resting on the bottom of the pot and having a tube rising therefrom
through the perforated bottom of the upper chamber, the said 'tube terminating in or
just under a cap, rose, or sprinkler fixed on the perforated bottom or on the top of the
tube, whereby the liquid discharged through the tube by the steam pressure generated
within the bell chamber, will be deflected downward on to the substance lying on the
strainer.
Dated this 17th day of December 1888.
J. C. BAYLEY.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Making Infusions or Decoctions.
1, JOHN CHARLES BAYLEY, of Dene House, Bournemouth, Ironmonger, etc., 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 apparatus for use in making an infusion or decoction of
tea, coffee, or any other substance; and it has for its object to enable an automatic and
nearly continuous circulation of the boiling liquid to be obtained in any ordinary
coffee pot in such a manner that the extractive qualities of the, tea, coffee, or other
substance to be infused will be more quickly, economically, and thoroughly, imparted to
the water.
To this end the invention consists essentially of a weighted plunger having a concave
under face that rests loosely upon the bottom of the pot, said weighted plunger having
a vertical hole through it, and of a tube fixed thereon, that passes up through the
bottom of a strainer vessel and carries at its upper end a spreader or liquid deflector
for spraying down, upon the coffee or other food substance which the strainer contains,
the boiling liquid which is caused by the ebullition and steam pressure to flow under
the edge of the plunger into the hollow beneath it and up the tube, as shewn by
the arrows in the drawing. By this loose fitting plunger any quantity of water with
which the vessel or pot may be charged will have the uprising and overflow action.
In known coffee pots of the cafetière class this will only act when the pot is fully
charged.
In order that the invention may be more readily understood, I have illustrated it in
the accompanying drawing forming part of this specification, to which reference should
be had and which represents a perspective view partly in section of a pot with the con-
trivance of my invention placed within it.
The vessel may be made of any suitable metal in the ordinary way of making coffee
pots. The contrivance whereby the circulation of liquid is maintained through the tea,
coffee, or other substance, consists of an upper compartment A having a perforated
bottom B and sides (which may also be perforated) and of a bell chamber or hollow
plunger Cresting on the bottom of the pot and having a rising tube D leading from
the cavity or space E beneath the plunger through the strainer B into the upper
chamber A the upper end of the said tube terminating just under a cap F acting as a
deflector or sprinkler whereby the boiling liquid forced up and discharged through the
tube D by the steam pressure generated beneath the bell chamber or plunger, will be
deflected downward on to the substance lying on the strainer B. The tube D may be
soldered to the strainer or it may pass through a short socket tube rising from the
strainer B and fitting on tube D and the plunger C is made rather smaller in diameter
than the lower part of the pot so that the liquid can run freely down between the
plunger and the sides to the bottom of the pot as fast as it is forced up through the
tube D. The plunger, if constructed of metal or other ware, would be made hollow

page_text: and packed interiorly, so as to weight it sufficiently to enable steam pressure to be
generated beneath, causing it to raise the liquid to the top of the discharge tube D
without raising the plunger. The plunger is however, free to be moved up and down
by any greater pressure so that the liquid passing down between the plunger and the
sides of the pot can run under the plunger and cover the bottom of the pot so that
over-heating of this part cannot occur. The cap F is shewn as permanently fixed to
the tube D at a short distance above the top of the tube, but it might be detachable
by being carried by a short tube fitting in, or on, the tube D, the short tube having
holes just beneath the cap and above the tube D through which the liquid is
discharged.
Having now particularly described and ascertained the nature of the said inven
tion and in what manner the same is to be performed, I declare that what I
claim is:
The combination, with a pot or vessel for making infusions or decoctions, of the
herein described contrivance consisting of the weighted yet loosely fitting plunger,
rising tube, upper compartment with strainer, and the deflector or cap, as the means
whereby the liquid is caused by ebullition and steam pressure automatically to rise
from the bottom vessel to the top vessel and be spread equally upon, and percolate
through, the substance to be infused, substantially as described.
Dated this 15th day of March 1889.
J. C. BAYLEY.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agent.
J. C. BAYLEY.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agent.