and for Similar Purposes.
Year: 1889

page_text: and for Similar Purposes.
I, GEORGE RADFORD WILSON, (trading as Wilson & Blessloy,) 1. Paul Street,
Finsbury, in the county of Middlesex, Manufacturer, 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 and accompanying
drawings
This Invention relates to further improvements upon my Patents numbered 6996
for "Improved apparatus for proparing infusions of Tea and Coffee" and 861788 for
"Improvements in Apparatus for Making Coffee."
I construct my Urn in two chambers with open space under the lower chamber for
Gas or other methods of heating all as described and set forth and illustrated in my
patents 699688 and 861788.
A pipe is fixed to communicate between the two chambers, and this pipe is bent
after the style of the letter S in the lower chamber, that is to say, first it rises straight
from within about an inch from floor of the lower chamber to nearly top of samo,
then it returns downward to nearly the bottom of this same chamber, when it again
turns in an upward direction and passes right up through the top of the lower chamber
and delivers at nearly the top of the upper chamber.
In the upper chamber and placed over and around the ascending pipe is a moveable,
perforated and adjustable box-this box is divided into two compartments, the upper
one is small and solid all round except at the bottom which is perforated-the lower
compartment contains the coffee or other substance and has a perforated bottom and
the sides also are perforated for a short distance from the bottom.
The Boiling water from the rising pipe discharges into the top and smaller com-
partment of this moveable box and then descends and passes out at the bottom and
sides of the lower compartment of this moveable box.
The liquid from the upper chamber may be drawn off in exactly the same manner
as described in my prior specification No. $61788
An escape pipe for steam is arranged from the lower chamber as described in the
before mentioned specification No. $61788-this pipe terminates in the upper chamber

page_text: in the apex and centre of lid to this chamber-this lid has a hole in its centre to
receive the pipe, and a small moveable cup is placed over same, (after the manner
described in my specification 699688) which when the steam is escaping through the
pipe, it keeps the small cup moving and creates a rattling noise thus indicating that
more heat is being applied underneath the urn than is needful for its duties, and which
indicates that the water in the lower chamber is in a sufficiently heated state for
making a fresh infusion.
A tap is arranged to open and close the pipes before referred to after the style of
the tap described in my specification No. 8617, however in these my further im-
provements this tap is not strictly essential to the working of my present invention as
it was in that of my Patent No. 861788 all that I strictly require here in connection
with making the coffee or other substance is a tap to open and shut the escape steam
pipe.
I however use a double action tap arranged to act only upon the escape steam
pipe and the pipe rising with boiling water.
(The pipe conducting the liquid coffee for delivery has its own tap outside the urn
as shewn.) This double action tap is so arranged that when the escape steam pipe is
shut, the ascending water pipe is open, and when the ascending water pipe is shut the
escape steam pipe is open. My reason for shutting off the ascending water pipo is
so that steam may not force its way up this pipe then through the coffee substance and
lastly through the liquid coffee and escape through the hole in the lid taking with it
some of the strength of the coffee.
It will be readily understood that a tap in this ascending water pipe is not strictly
necessary as a deal of liquid will always remain in the bent syphon shaped pipe in
lower chamber.
I supply water to the lower chamber after the manner described in my specifications
No. 6996 and 86178 hereinbefore referred to.
I have here a further improvement I can take off the screw nut or other lock
fastening, opening or closing this aperture by which water is supplied to lower chamber,
and fix in its place a funnel or wide mouthed vessel this vessel may be so shaped to
contain any small object that requires to be kept warm, such as a Milk Jug, a cup of
Tea or Coffee or such like, these are kept warm by means of the escape heat from hot
water in lower chamber which heat I prefer to utilize in this way to allowing it to
escape over the coffee itself when it may carry off with it some of the strength of the
coffee this vessel is so arranged that the water caused by any escape steam con-
densing in the vessel may run back into the lower chamber.
This funnel shaped vessel is also very useful to assist in pouring the water into
the lower chamber. Whon it is required to put the urn into action and boil water
up from the lower to the upper chamber, the screw nut or other lock fastening is
fixed on tight to close the aperture by which water is poured into this lower
chamber, also the escapo steam pipe is shut off, and the ascending water pipe left
open the boiling water passes up this pipe and delivers into the moveable box in
the upper chamber passing through the coffee and out through the said perforated
box and fills the upper chamber and is then withdrawn us required through a pipe
traversing the lower chamber which contains the heated water.
By the aid of my bent syphon shaped pipe I secure the water in the lower
chamber being clear for use. A draw off tap is arranged from this lower chamber
as described in my specifications No. 6996 and 861788 as herein before referred to.
When the coffee or other substance in the moveable box has been sufficiently
exposed to the boiling water I remove the lid of the upper chamber withdraw the
moveable box and then replace the lid.
The upper and lower chambers may be connected by means of a screw joint.
Glass gauges may be provided to each of these upper and lower chambers
respectively to indicate the quality of liquid contained by such chambers re-
spectively.
The upper chamber of my urn I may make in china or such like earthenware,
or of metal. I may enamel the interior and may also treat the moveable box

page_text: containing coffee in a similar way as it is at times objectionable for the liquid
coffee to come into contact with some metals as an action is sometimes set up
detrimental to the condition of the Coffee or other substances.
For preference I construct my Urns or Apparatus in a circular form on plan
and in the accompanying drawings I wish this understood.
In order that the nature of my said improvements may be the more fully understood
I will now proceed to describe the several figures on the sheet of drawings here-
unto annexed all of which figures are marked with the like letters of reference
throughout.
Figure 1 is a vertical section through my improved apparatus A is the lower
chamber. B is the upper chamber. O is the bent syphon shaped pipe terminating
at top of upper chamber B. D is the moveable perforated box, having handle E
to withdraw same. F is the upper compartment of this moveable box into which
the boiling water discharges. G is the lid to upper chamber provided with move-
cap H to aperture in centre, J is the draw off pipe from the upper chamber
and K is the steam escape pipe from lower chamber A. N is the screw nut or
other lock fastening covering opening for supplying the water to chamber A..
P is the lever of tap opening and shutting pipes C and K.
able
Figure 2 is an elongated section shewing my said improvements more clearly,
the tap in pipes being here arranged for making coffee or similar substances
M shews the funnel shaped vessel fitting into aperture in lower chamber A which
admits water to same.
As my improvements are capable of various modifications without departing
from the principle thereof I do not restrict myself to materials, dimensions, or to the
precise form or placement of the several parts thereof.
Having now fully 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. An apparatus for making coffee or similar infusions substantially according to
the foregoing specification and as illustrated by accompanying drawings.
2. A bent S shaped or syphon like pipe terminating in a straight length which is
the communication pipe between a lower and upper chainher and through which
boiling water is forced to ascend by means of heat applied, and by means of the
S shaped or syphon like pipe the liquid in the upper chamber is prevented from
returning and mixing with the liquid in the lower chamber.
3. A moveable perforated box D formed in two compartments as herein described
and illustrated by accompanying drawings.
4. The combination with an urn (for making coffee or such like beverage,) of a
vessel for holding a milk jug or such like article for the purpose of keeping the same
warm by means of waste heat from the said urn.
Dated this 14th day of January 1889