Year: 1885

page_text: I, FELIX VAN DEN WYNGAERT, Mechanical Engineer, of 77 Königgrätzer
Strasse, Berlin, Germany, do hereby declare the nature of this invention, to be as
follows:-
The object of this invention is to construct an inkstand which is always closed
except in the moment when the pen dips into the ink, the ink then rising through
a thin little tube, which is widened towards the outside.
The ink receptacle is closed by an elastic plate, through which a thin tube leads
into the interior of the ink receptacle. This tube reaches almost to the bottom
and is conically widened at the top so as to form a funnel. By the pressure
produced on the air above the ink when the pen is dipped, the ink is caused to
rise in the little tube and to feed the pen in the funnel.
By removing the pen from out of the funnel, the pressure ceases and the ink
runs back.
The hermetically closing elastic cover plate may be made of any elastic material,
for instance caoutchouc, or leather. The little tube with the funnel may be made
of glass, metal or such like and be either in one piece with the elastic plate, or only
secured to the same.
The funnel with the thin tube, instead of being fixed to an elastic plate, may be
fixed to a rigid plate, laid upon an elastic base, so that likewise by dipping the
pen into the funnel the elastic base is pressed down and the air compressed above
the ink, whereby the ink is caused to rise in the funnel.
The mouth or neck of the receptacle may have an inside flange or collar, on
which is laid an elastic ring. On this ring is situated the rigid cover plate with
the funnel and the thin tube. For tightening the cover plate an angular ring is
laid round the rim of the inkstand, which ring may itself form a packing or act on
packing material laid under it.
By pressing the pen into the funnel, the rigid cover plate is made to press on the
elastic ring and the air pressure caused thereby raises the ink in the thin tube, fills
the funnel and feeds the pen.
The advantages of this construction consist in the impossibility of ink running
out, when the inkstand tumbles over, as the ink cannot run out automatically
through the thin central tube. A thickening or spoiling of the ink is excluded, as
the ink is protected from impurity and evaporation, owing to the narrowness of
the tube.
By the height of the funnel, the depth of dipping in the pen is limited, and by
the ink receding in the instant of removing the pen, the pen is freed from the
excess of ink so that no stains are made.
:

page_text: I, FELIX VAN DEN WYNGAERT, Mechanical Engineer, of 77 Königgrätzer
Strasse, Berlin, Germany, 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 relates to an improved automatic inkstand, which gives ink to
the pen only at the moment of dipping the latter into the inkstand.
The inkstand is covered with an elastic membrane or disc through which passes
a small tube extending into the ink and widened above in the form of a cup or
funnel,
By introducing the pen into the cup the latter is pressed down and carries with
it the elastic disc so that the air contained in the vessel is compressed and causes
the ink to rise through the tube into the cup and so reach the pen.
In the accompanying drawing, Fig. 1 is a section, Fig. 2 a plan of the simplest
form of the improved inkstand-Fig. 3 is a section and Fig. 4 plan of an improved
inkstand with plug for filling. Figs. 5 and 6 section and plan of a modification.
Figs. 7 and 8 section and plan of a second modification.
a is the inkstand, over which is stretched a membrane or elastic disc o through
which passes and is secured the cup b. To avoid the removal of the membrane,
when filling the inkstand, the latter may be furnished with a small opening d for
filling as shown by Figs. 3 and 4. The opening d is provided with a secure
stopper for other closing device.
In the modifications shown in Figs. 5 to 8 the air in the receptacle a has free
connection with the outer air save when the pen is dipped into the inkstand. By
this means the ink in the tube is not liable to be driven out by expansion of the
air in a from any cause. For this purpose a second cup tube h with an elastic
membrane encloses the first tube. The outer tube is provided with several per-
forations 8 8. By dipping the pen into the inner cup-tube, the lower extremity
of the latter is pressed down into the upper end of the outer tube. By a further
slight pressure the air in the vessel is compressed and feeds the ink to the pen, as
in Figs. 1 and 3.
In the modification shown in Figs. 7 and 8 the inner tube b is allowed to enter
the tube of the cup h and slide therein a small ring of india-rubber making the
connection air tight. In this case the outer cup tube need not be made movable,
but may be rigidly connected with the inkstand.
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. An inkstand closed by an elastic membrane carrying a small funnel with tube
extending into the ink, so that by dipping the pen into the said funnel the air in
the inkstand is compressed and the ink thereby brought within reach of the pen.
2. The inkstand as described in Claim 1) having a second opening with
hermetical closing for the purpose of filling the vessel with ink.

page_text: 3. In inkstands, the device consisting of an outer elastically connected funnel
tube h having perforations into the air space in the inkstand-combined with an
inner elastically connected fannel tube b adapted to be pressed down on to the
orifice of the tube of the former and so close the inkstand hermetically and on
further pressure feed ink to the pen substantially as described and illustrated in
Figs. 5 and 6.
4. In inkstands the device consisting of an outer rigid perforated cup tube h to
which is elastically connected an inner cup tube adapted, on receiving pressure
from the pen, to slide downwards in the tube of the outer cup-and thus her-
metically close the inkstand and feed ink to the pen substantially as described and
illustrated in Figs. 7 and 8.
Dated thin 9th done of Contambon 1906