other Liquids Hot.
Year: 1889

page_text: Date of Application, 16th Apr., 1889
Specification Accepted, 1st June, 1889
other Liquids Hot.
I, HERBERT SUMERLING, of 145 Old Street, London, in the County of Middlesex,
Tinman and Copper Smith, 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:-
My invention relates to urns or vessels for heating or keeping beverages or other
liquids hot, and is principally applicable to urns for tea or coffee. The object is to
enable the beverages or liquids to be kept hot in such a manner that the same shall
not deteriorate in flavor or quality, and for this purpose I so construct the urn or
vessel that the vapors given off from the liquids when heated shall not find their way
back into such liquids.
My invention is illustrated in the accompanying drawings, in which
Fig. 1 is a vertical section of a tea or coffee urn, and
Fig. 2 a perspective view of same.
A is the outer casing of the urn and at the bottom thereof a gas or other suitable
burner B is arranged for heating the casing. The casing A forms a receptacle for
water, which is introduced through the opening C near its upper end, such opening
being provided with a suitable cover C which is preferably hinged. A tap D at its
lower end enables the receptacle A to be emptied when required.
An inner vessel or jar E, preferably of earthenware, is suitably supported within
the casing A, so as to leave a clear space all round such vessel E, which is partly
immersed in the water contained in the casing A, so that the latter constitutes a water
jacket for same. A tap F passes through the outer casing A and enters the vessel E,
so as to enable the contents of the latter to be drawn off as required. The bottom of
vessel E preferably slopes towards the tap F as shown in Fig. 1, so as to enable the
whole of the contents of vessel E to be drawn off. The bore of the tap F is preferably
continued straight beyond the spout or orifice F¹, the extension being provided with a
screw stop or plug F, by removing which the bore of the tap can be more readily
cleaned out when requisite.

page_text: To the top of the vessel E is fitted a gutter H, the outer surface of which also fits
the upper end of the casing A, and into such gutter the lower end of a cap I projects
and forms a cover to the vessel or jar E. From the bottom of the gutter H a syphon
tube J depends. The outer casing A is also provided with a cover K fitted to its
upper end.
The action is as follows:-
The tea, coffee or other liquid to be heated or kept hot is placed in the vessel E,
and the water is admitted to the casing A so as to fill it to the desired height. Upon
the burner B being ignited the water in casing A becomes heated, and by transmitting
heat to the vessel E causes vapors to rise from its contents. The vapors given off
from the liquid in vessel E come into contact with the inner surface of the cover I of
vessel E, and condensing thereon trickle down into the gutter H. To facilitate the
condensation of the vapors and the passage of the condensed liquid to gutter H, and
also to prevent such liquid dripping down from the inner surface of cover I back into
the vessel E, such inner surface of the cover I is preferably provided with a series of
projections or ribs, G, continuing down to near the lower edge of the cover, and
suitably shaped so as to form paths for the passage of the condensed liquid to the
gutter H. The condensed liquid which collects in the gutter H is conveyed, by the
syphon tube or pipe J into the outer casing A. In order to provide an effective
closing of the vessel E, the upper end of the syphon tube J may project slightly above
the bottom of the gutter H, so as to ensure the collection of a certain amount of
liquid in the latter, and the lower edge of the cover I dipping into such liquid will
form a seal joint.
Instead of water, hot air or other heating medium might be employed in the casing A
for heating the vessel E.
Further, instead of being heated by a jacket as described, heat might be applied
directly to the vessel E (which in such case would be preferably of metal) and the
liquid condensed on the cover I be allowed to collect in the gutter H, which would be
made sufficiently large for this purpose, and suitable means provided for drawing it
off when necessary.
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 improved urn or vessel for heating and keeping beverages or other liquids
hot, constructed and operating substantially as specified.
2. The improved urn or vessel consisting in a jacketted receptacle to receive the
beverages or other liquids, and having a cover the lower end of which enters a gutter
from which a syphon tube leads to the jacket between the receptacle and the outer
casing, substantially as specified.
3. The improved urn or vessel consisting in a receptacle E having a cover the
lower end of which enters a gutter H, so as to enable the vapors given off from the
liquid in the vessel when heated, to condense upon the inner surface of such cover and
to pass down into the gutter, substantially as specified.
4. The formation of the cover I of the vessel E, with projections or ribs G on its
inner surface, substantially as and for the purpose specified.
Dated this 16th dow of Anvil 1000
ALLISON BROS.,
Agents for the Applicant.