Improvements in Teapots and other Vessels having Spouts.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Teapots and other Vessels having Spouts.
1, HERMANN PRENZLAU, of 45 gr. Bleichen, Hamburg, Germany, Merchant,
do hereby declare the nature of this invention to be as follows:-
The spouts of teapots, cans, pots and the like, as heretofore made whether the
latter be of china, earthenware, stoneware, glass, metal or other material, have the
disadvantage that at the commencement of and during the pouring-out operation,.
that is to say, when in consequence of the small inclination of the vessel, the cohesion
of the liquid is smaller than its adhesion to the surface of the spout, the liquid runs.
down the outside of the vessel. This takes place, apart from the skilfulness of the
person pouring out, to an extent and amount which is greater the fuller the vessel
and the rounder the edge of the spout.
Now the object of the present invention is to provide vessels of the kind referredi
to with spouts such that this drawback will be obviated, the liquid being prevented
from flowing down along the outside of the vessel in every case, even with the most
awkward manipulation. To this end the lower edge of the spout is formed as
illustrated in the accompanying drawings in which
Fig. 1 is a side elevation partly in section of a can with the improved spout ;.
and
Fig. 2 is a side elevation, and
Fig. 3 a front elevation of the spout and adjacent part of the can.
The lower edge of the spout is made with a beard-like extension or lip a
depending in front vertically or approximately vertically downwards, which ends
in a more or less sharp edge and at its rear joins the wall of the spout with a
gradual sweep or curve by means of an upwardly inclined surface.
The effect of this construction is to form, even at the slightest inclination of the
vessel, an angle of fall such that the cohesion of the liquid is greater than its
adhesion to the surface of the spout, thus entirely obviating any flow of the
liquid down along the spout and further down along the outside of the vessel.
Dated this 18th day of April 1895.
Improvements in Teapots and other Vessels having Spouts.
I, HERMANN PRENZLAU, of gr. Bleichen 45, Hamburg, Germany, Merchant,.
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 :—
The spouts of teapots, cans, pots, and the like as heretofore made, whether the
latter be of china, earthenware, stoneware, glass, metal or other material, have the
disadvantage that at the commencement of and during the pouring-out operation-
that is to say, when in consequence of the small inclination of the vessel, the

page_text: cohesion of the liquid is smaller than its adhesion to the surface of the spont―
the liquid runs down the outside of the vessel. This takes place, apart from the
skilfulness of the person pouring out, to an extent and amount which is greater
the fuller the vessel and the rounder the edge of the spout.
Now the object of this invention is to provide vessels of the kind referred to
with spouts such that this drawback will be obviated, the liquid being prevented
from flowing down the outside of the vessel in every case, even with the most
awkward manipulation. To this end the lower edge of the spout is formed as
illustrated in the drawings filed with my Provisional Specification, in which
Fig. 1 is a side elevation partly in section of a vessel with the improved spout;
Fig. 2 is a side elevation, and
Fig. 3 a front elevation of the spout and adjacent part of the vessel.
The lower edge of the spout is made with a beard-like extension or lip a which
depends in front vertically or approximately vertically downwards and which ends
in a more or less sharp edge and, at its rear joins the wall of the spout by means
of an upwardly inclined surface and a gradual sweep or curve.
The effect of this construction is, that, even with the least inclination of the
vessel, the angle made by the front surface of the lip a with the direction of
motion of the liquid at the point where it leaves the spout is such that the
cohesion of the liquid is greater than its adhesion to the surface of the spout,
which entirely obviates any flow of the liquid down the outsides of the spout and
the vessel.
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 :-
A teapot or other vessel constructed with a spout having a beard-like extension
or lip whose front surface descends vertically or approximately vertically and
whose rear surface first inclines upwardly and then joins the wall of the spout with
a gradual sweep or curve, the two said surfaces forming together a more or less
sharp dripping-edge substantially as hereinbefore described with reference to the
drawings referred to.
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