Improvements in Inkstands or Ink Holders.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Inkstands or Ink Holders.
I, WILLIAM MILLER, of 212, St. Vincent Street, Glasgow, in the County of
Lanark, North Britain, Merchant, do hereby declare the nature of this invention
to be as follows:-
My invention has for its object to reduce evaporation and prevent the overflow
of ink at the diphole of inkstands or inkholders, of the bird-fountain type.
There apt to be an overflow of ink at the dip hole due to the changes of tem-
perature and variations of the atmospheric pressure. In carrying out my inven-
tion I make the ink holding or bird fountain part of the inkstand or inkholder
of dome shape or other similar form, which is fitted in to a bottom part of a
saucer shape or other suitable form to hold the ink. The dome has a flange
round it towards its lower edge. Through the flange there is a small diphole for
the pen.
An inverted channel is formed on the under side of the flange (in
which the dipping hole is made). This inverted channel is ordinarily occupied by
air, the level of the ink being at the bottom edge of the dome which is lower
than the flange, but when expansion takes place from heat, the air is more or
less expelled out of the channel. To reduce evaporation in the channel to a
minimum I put a small rim or projection near and round the dipping-hole on
the under side of the flange. This rim is in contact with the ink in the
channel. There is a small passage through this rim between the channel and
the dipping-hole to allow the escape of air when the channel is filling with ink
from the dome by expansion. Instead of making an air-passage through this
rim, a small hole may be made through the flange to allow the air to escape
when the channel is filling.
Improvements in Inkstands or Ink Holders.
I, WILLIAM MILLER, of 212, St. Vincent Street, Glasgow, in the County of
Lanark, North Britain, 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:-
-
My invention has for its object to reduce evaporation and prevent the overflow
of ink at the dip-hole of inkstands or inkholders of the bird fountain type, which
is due to the changes of temperature and variations of the atmospheric pressure.
TDi Q77

page_text: In order that my invention may be properly understood and readily carried into
effect I have hereunto appended one sheet of drawings, of which,
Figure 1 is a vertical section taken centrally through the inkholder and cut-
ting through the dip-hole, and,
Figure 2 is a perspective view of the dome detached from the inkholder.
In carrying out my invention, I make the ink-holding or bird fountain part of
the inkstand or inkholder of a dome shape or other similar form A, which is
fitted in to a bottom part of a saucer shape B, or other suitable form to hold
the ink. The dome A has a flange a round it towards its lower edge. Through
the flange a there is a small dip-hole B₁ for the pen. A channel C is formed by
having an inverted lip b at the bottom of the dome and the inner vertical wall of
the saucer shape B on the under side of the flange a (in which the dipping hole
is made). This inverted channel is ordinarily occupied by air, the level of
the ink being at the bottom edge of the dome A, which is lower than the flange a,
but when expansion takes place from heat, the air is more or less expelled out
of the channel C. To reduce evaporation in the channel to a minimum, I pro-
vide a small rim or projection e near the dipping hole on the underside of the
flange, as shewn. This rim is in contact with the ink in the channel. There
is a small passage & through this rim between the channel and the dipping hole to
allow the escape of air when the channel is filling with ink from the dome by
expansion. There is also a radial projection e¹ placed across the channel near
the dip-hole, which does not allow of through and through communication along
its whole circumference.
d
Instead of making an air passage through this rim, a small hole may be made
through the flange to allow the air to escape when the channel is filling..
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:-
In inkstands or inkholders of the bird fountain type, the provision of an annular
channel formed by an inverted lip or extension made in the lower edge of the
dome and the inner vertical wall of the ink receptacle in order to reduce evapora-
tion and prevent the overflow of the ink, substantially in the manner described
and illustrated on the accompanying sheet of drawings.
Dated this 26th day of Tune 1000
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Patent Agents.