Improvements in and connected with Ink-wells.
Year: 1895

page_text: Date of Application, 22nd May, 1895-Accepted, 29'h June, 1895
COMPLETE SPECIFICATION.
Improvements in and connected with Ink-wells.
We, EMIL RUDOLPH of 42 Willibald-Alexis Strasse of Berlin, and HERMANN
HURWITZ of 49 Klosterstrasse, Berlin, Kingdom of Prussia, German Empire,
Merchants, do hereby declare the nature of our said 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 refers to ink-wells, in which a small portion of the ink may be
transferred into a special dipping-cup, that may be emptied after use; our improve-
ments in, ink-wells of said kind relate to the use of a diaphragm arranged upon a
special opening of the ink-vessel, and adapted to compress the air withiu said vessel,
so as to cause said air to force a part of the ink into the dipping-cup. The purpose
of our improvements is to avoid any stirring of the ink, or of the sediments of the
same respectively, on the transfer of the same, and to prevent the ink from being
evaporated as well as covered with dust.
In order to make our invention more clear, we refer to the accompanying
drawing, in which similar letters denote similar parts throughout the different
views, and in which:
Figure is a vertical longitudinal section through our improved ink-well.
Figure 2 is a side-view of a slightly modified form of construction, partly in
section,
Figure 3 is a vertical section through a detail of Figure 2.
Referring to Figure 1, a designates the ink-vessel, which is provided with two
necks a a; the opening of the latter contains the funnel c, which is supported by
a hopper the bent rim of which takes over the neck a². The funnel e is provided
with a tube c' reaching down into the ink d. Said tube c' terminates shortly above
the bottom a³ of the vessel a. Said bottom is sloping, and the deepest portion of
the same is situated exactly below the opening of the neck a² or below the lower
end of funnel tube c' respectively.
The funnel c, which forms the dipping-cup of the ink-well, is held upon the
hopper by means of a screw-cap e, which at the same time serves as a support for
the lid or cover g; the latter is hinged to the projection h.
The opening of neck al is closed by means of the diaphragm f, which may consist
of any suitable elastic material, preferably india-rubber. If a pressure is exerted
upon said diaphragm f, the air contained within the vessel a will be compressed,
and will thus cause a part of the ink to enter the tube c' and the funnel or dipping
cup c.
The pressure exerted upon the diaphragm f is, as a matter of course, to
continue as long as the ink is used, and I therefore prefer to produce said pressure
by means of the lid or cover y, which for this purpose is made as a rather heavy
body, and with a suitable configuration.
When the ink-stand is to be used, the lid or cover g needs simply be turned upon
the hinge h so as to get upon the diaphragm f. The upper surface of the heavy
part g is of convex shape, and is thus adapted to press the diaphragm down into
the interior of the vessel a, so as to compress the air within said vessel, and to
force part of the ink up through tube c into the funnel c.
The heavy cover need not be fastened to the vessel a by means of a hinge or the
like, but may be perfectly detachable, as shown in Figure 2. The convex portion of
the cover is in this case arranged upon the lower side of the same, as shown in
Figure 3.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In an ink-well having a special dipping-cup, the combination with the vessel
holding the latter, of a diaphragm arranged upon a suitable opening of said vessel,
and adapted to compress the air with the said vessel so as to cause said air to
force part of the ink into said dipping-cup, for the purpose as described.
2. In an ink-well having a special dipping-cup, the combination with the neck
holding the latter, of a second neck having its opening closed by an elastic
diaphragm adapted to be pressed down into the vessel having said two necks, and
to compress the air within the said vessel, so as to cause said air to force part of
the ink into said dipping-cup for the purpose as described.
3. In an ink-well having a special dipping-cup, the combination with the vessel
holding the latter, of a diaphragm arranged upon a suitable opening of said vessel,
and adapted to compress the air within the said vessel so as to cause said air to
force part of the ink into said dipping-cup, the latter consisting of a funnel having
a thin tube reaching down into the ink, for the purpose as described.
4. In an ink-well, having a special dipping-cup, the combination with the vessel
holding the latter, of a diaphragm arranged upon a suitable opening of said vessel,
and adapted to compress the air within the said vessel so as to cause said air to
force part of the ink into said dipping-cup, the latter consisting of a funnel having
a thin tube reaching down into the ink, and being supported by a hopper of
corresponding obliquity, for the purpose as described.
5. In an ink-well, having a special dipping-cup, the combination with the vessel
holding the latter, of a diaphragm arranged upon a suitable opening of said vessel,
and adapted to compress the air within the said vessel so as to cause said air to
force part of the ink into said dipping-cup, the latter being furnished with a cover
adapted to expand said diaphragm, for the purpose as described.
6. In an ink-well, having a special dipping-cup, the combination with the neck
holding the latter, of a second neck having its opening closed by an elastic
diaphragm, adapted to be pressed down into the vessel having said two necks, and
to compress the air within said vessel so as to cause said air to force part of the ink
into said dipping cup, the latter being furnished with a cover adapted to be placed
on either neck, and having a weight adapted to expand said diaphragm, for the
purpose as described.
Dated this 20th dow of May 1905
EMIL RUDOLPH,
HERMANN HURWITZ,
By Geo. H. Rayner,
37 Chancery Lane, London, W.C., Agent for the Applicants.