AN IMPROVED COPPEE POT AND FILLER FOR THE SAME
Year: 1869

page_text: LETTERS PATENT to Edward Edmonds, of Rockville, Paignton, in the
County of Devon, for the Invention of "AN IMPROVED COPPEE POT
AND FILLER FOR THE SAME."
Sealed the 14th January 1870, and dated the 4th November 1869.
PROVISIONAL SPECIFICATION left by the said Edward Edmonds at the
Office of the Commissioners of Patents, with his Petition, on the
4th November 1869.
I, EDWARD EDMONDS, of Rockville, Paignton, in the County of
Devon, do hereby declare the nature of the said Invention for "Ar
IMPROVED COFFEE POT AND FILLER FOR THE SAME," to be as follows:
This Invention relates to a peculiar construction of coffee pot and
syphon funnel or filler to be used therewith, and consists in constructing
the coffee pot of an inner and outer vessel, the inner vessel having a
steam pipe or pipes opening into the lower portion thereof at their
inferior extremities, whilst the upper ends of such pipe or pipes open

page_text: into an annular chamber surrounding the upper end of the outer vessel
and in free communication therewith all round, or may be in free com-
munication with the outer vessel without the annular chamber. The
coffee is contained in a perforated strainer which is supported by a
metal bevelled ring suspended by metal straps in the interior of the
inner vessel. A filling mouth is formed on the side of the outer vessel
for the introduction of water therein, and a hinged lid or cover held
down by a spring is fitted thereon, so as to close the filling mouth until
the pressure of steam is sufficient to open the lid, which then acts as a
safety valve. The pouring spout passes through the side of the outer
vessel into the inner one which is closed by an ordinary moveable top
or lid. The coffee is first introduced into the strainer, which is then
lowered into its place; hot water is then poured into the outer vessel,
the proper quantity being regulated by the syphon filler herein-after
described. On applying heat to the outer vessel the steam generated
thereby enters the top of the steam pipe or pipes and passes down the
same to the bottom of the inner vessel and heats the coffee therein.
The water for the infusion is distinct from that in the outer vessel,
being poured directly on to the coffee in the strainer through the top
of the inner vessel, the lid or cover being removed for that purpose.
The whole is now allowed to steam for a short time, then the strainer
with the spent coffee grounds is lifted out, when after standing a few
minutes the pot is ready for service, the infusion being kept hot for a
long period of time by the surrounding hot water jacket formed by the
outer vessel. If desired the upper part of the steam pipe or pipes may
open into a box or chamber provided with a valve of its own, the valve
opening and allowing the steam to escape into the inner vessel, but
closing when condensation takes place in the outer vessel in order to
prevent the infusion from flowing into such vessel. This may be
obviated when the steam valve is not used by simply throwing open the
spring hinged lid or cover, forming the safety valve before referred to.
The syphon filler consists of a cylindrical or other vessel having a
pipe fixed therein and passing through the bottom thereof, such pipe
rising inside the vessel to about the desired water level. Small projections
are formed on the exterior of that portion of the pipe which is inside
the vessel in order to form bearings for an outer pipe to slide along it,
such outer pipe being closed at the top and extending nearly to the
bottom of the vessel. The annular space between the inner and outer
pipes with the passage down the inner pipe constitute a syphon, through

page_text: which the water flows so soon as the level rises above the top of the
inner pipe. By adjusting the height of the outer pipe more or less
water can be run off from the vessel as desired. In using this syphon
filler the lower end of the inner pipe below the vessel is introduced into
the filling mouth of the outer vessel of the coffee pot, and the water is
then poured into the filter.