Improvements in Inkstands.
Year: 1891

page_text: Date of Application, 18th Feb., 1891
Complete Specification Left, 17th Nov., 1891-Accepted, 13th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Inkstands.
I, EDWARD THOMAS DARKE, of 16 Rochester Terrace, Camden Road, London,
Secretary of the Association for the Supply of Pure Vaccine Lymph, do hereby
declare the nature of this invention to be as follows:-
This invention has for its object improvements in inkstands.
Inkstands constructed in accordance with my present invention are similar to
those made as described in the Specification of my Patent No. 1985 in the year 1889
in so far that the ink container receives a plug with a dipping cup at its upper end
and a passage leading down through the plug from the cup to beneath the surface
of the ink in the ink container. An india rubber collar, in which however the
plug can move, also as formerly forms an airtight joint between the plug and the
ink container. When the plug is moved inwards the ink is displaced from the ink
container and it rises in the cup; and similarly when the plug travels outwards from
the ink container the ink descends from the cup to occupy the space which
otherwise would be left void.
According to my present invention I form the plug with a screw thread upon it
and I form a corresponding screw thread within the india rubber collar. In the
use of the inkstand the plug in place of being thrust directly downwards and drawn
directly upwards as heretofore is turned round either in one direction or the other
and when so turned the plug and collar work together as screw and nut. By this
means render it impossible that the ink should be projected suddenly upwards
into and out of the cup which in the absence of careful usage may occur, in
inkstands in which the movement of the plug is direct or is not directed and
controlled by screw threads. The plug may be formed of earthenware, glass or
vulcanite, and the collar may either be formed as a cap fitting over a neck on the
ink container or as a ring inserted into a cavity in the ink container around its
mouth and kept in place by another ring preferably of glass cemented into the
same cavity. Or the india rubber collar may have an annular groove in its
exterior and be surrounded by a ring preferably of glass fixed by cement into the
mouth of the ink container.
Or in place of this glass ring encircling the collar an inwardly projecting flange
may be formed in the mouth of the ink container to fit into the annular groove
formed in the exterior of the collar.
Dated this 17th day of February 1891.
EDWD. T. DARKE.
COMPLETE SPECIFICATION.
Improvements in Inkstands.
I, EDWARD THOMAS DARKE, of 16 Rochester Terrace, Camden Road, London,
Secretary of the Association for the Supply of Pure Vaccine Lymph, 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:—
This invention has for its object improvements in inkstands.
Inkstands constructed in accordance with my present invention are similar to
those made as described in the Specification of my Patent No. 1985 in the
year 1889 in so far that the ink container receives a plug with a dipping cup at its
upper end and a passage leading down through the plug from the cup to beneath
1....מ

page_text: invention.
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Figure 2 is a plan; on one side the inkstand is shown compléte but on the other
side it is shown with parts removed leaving only the ink container.
Figure 3 is a plan, and
Figure 4 is a vertical section of the india rubber cap or collar adapted to the
mouth of the ink container.
The Figures 5 to 10 show modifications which may be made without departing
from my invention.
In Figure 1a is the ink container which conveniently may be of glass. bis the
plug and this may be of carthenware smooth and highly glazed on the face or'it
night advantageously be of glass except that in this material it is somewhat more
difficult of construction.
Also obviously there are other materials of which the plug may be made.
is the screw thread upon the plug, 63 its flange, the ink passage 'up through
the plug and is the dipping cup.
e is the cap and this is made of soft elastic vulcanized india rubber, it is adapted
to fit over the mouth of the ink container and it has a screw thread moulded 'in it
at this part of the cap forming a collar to embrace the plug b.
Figure 5 is a vertical section of the upper part of an ink container with'the'india
rubber collar but without the plug.
Figure 6 is a plan, on one side the ink container alone is shown whilst on the
other side the india rubber collar is also represented.
d is the ink container and d¹ is a ring of glass or other hard material cemented
into the mouth of the container or it might be a flange, of a piece with the
container and projecting inwards into the mouth. 'e is' the india rubber collar with
a screw thread moulded in it. On the exterior the collar has a groove around it
where it is embraced and held by the ring d². The plug may be as is shown
in the preceding figures.
Figures 7 and 8 are similar to Figures 5 and except that the collar is held in
place in the mouth of the ink container by a ring d placed over instead of around
it and cemented into the mouth of the ink container.
Figure 9 is a vertical section of the upper part or mouth of an'ink container,
with an india rubber collar held on by a screw cap of metal.
'Figure 10 is a plan; in one half all the parts represented in Figure 9'appear and
in the other part only the ink container itself is shown.
'fis the ink container, it has a screw thread upon' it at ". is the india rubber

page_text: collar; the top of the ink container is slightly recessed to receive it. is a metal
disc with a hole in the centre placed over the collar and i is a screw cap which
when screwed on to the mouth of the ink container compresses the collar slightly
and holds it securely in place.
The plug in this as in the other cases may be the same as is represented in
Figures 1 and 2.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. An inkstand substantially as described consisting of an ink container, an
elastic collar at the mouth of the container and a plug with a screw thread upon it
working through the elastic collar; the whole so arranged that the plug by
turning it round may be screwed down into the ink container and the ink thereby
caused to ascend through a passage in the plug into a dipping cup at the upper
part thereof.
2. Inkstands substantially as described and represented by the annexed drawings.
Dated this 17th day of November 1891.