An Improved Fountain Pen.
Year: 1896

page_text: An Improved Fountain Pen.
MAX HEINZELMANN & PAUL SCHWARZ Manufacturers of fountain pens and
partners in the Constant Fountain Pen and Ink Company 54 Gotthardstrasse Zurich
Switzerland do hereby declare the nature of this invention to be as follows:-
A device to regulate the flow of ink in fountain pens, to shut off the ink entirely
and to start the ink when required by suction. The device consists of a conical
stopper, inside the barrel of the pen, with holes to allow the ink to flow through: the
barrel of the pen screws up against the holes in the stopper to shut off the ink: when
it is unscrewed the ink flows down to the nib: the ink is drawn into the nib, by
placing a finger on the air-hole of the cover of the nib, & drawing it off.
Dated this Eighteenth day of December 1896.
HAZELL, WATSON & VINEY.
We, MAX HEINZELMANN and PAUL SCHWARZ, Manufacturers of fountain pens and
partners in the Constant Fountain Pen and Ink Company, of 54Gotthardstrasse, Zurich,
Switzerland; 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 object of this invention is to provide fountain pens with means whereby the
flow of ink to the nib can be regulated, entirely shut off, or started to flow by suction
as and when desired.
The invention comprises first a conical valve fitted inside the barrel of the pen
with peripheral port holes, which are respectively covered and uncovered by the end
of a tube on the body of the reservoir which screws into the barrel aforementioned.
Secondly, the nib cap is provided with an air-hole by covering which and pulling off
the cap when the valve is open the ink will at once flow and any little obstruction in
the feeding tube or elsewhere will be cleared.
In the accompanying drawings Fig. 1 is a sectional elevation of a fountain pen
constructed according to our invention, Figs. 2 and 3 are respectively side and end
elevations of the valve detached, and Fig. 4 is a section taken on the line 4 4 of Fig. 3.
The valve A is preferably externally screw threaded as shown at a¹ in Figs. 2 and 4
and screwed into position in the internally threaded barrel B close up to the rear end
of the nib holder C as shown in Fig. 1. The valve A may however be otherwise fitted
into the barrel B as found convenient. The valve A is of a conical or conoidal shape
and provided with two ports or orifices « situated at the periphery of the cone and
077

page_text: diametrically opposite to each other. These ports are inclined towards the centre and
meet in a common central duct. 2. Any suitable number of ports a, other than
two, may be situated around the periphery of the cone and they may meet in a
common duct, central or otherwise, or may each pass through the valve and lead the
ink separately to the nib as desired. The arrangement shown in the drawings
however is found to give good results in practice.
The ink reservoir D is furnished with a tubular externally threaded prolongation D¹
which engages in the internally threaded barrel B3 and when fully screwed thereinto
entirely closes the peripheral ports or ways a in the valve A. The quantity of ink
flowing from the reservoir D through the valve A can be regulated by unscrewing the
tubular prolongation D1 more or less from the barrel B.
The nib cap E is shown in Fig. 1 on the end of the reservoir the dotted lines show
its position when on the nib. This nib cap is provided with an orifice or air hole e
situated in any suitable part.
It will be understood that by tightly screwing up the reservoir D the tubular
prolongation D¹ thereon hermetically closes the ports a of the valve A thus shutting
off the supply of ink to the nib. In use this hermetical closing may be effected just
before the writing is finished, so as to use up all the ink in the nih. The nib
cap E may be placed in proper position over the nib and the fountain pen nay then
be carried in any position and will not leak. To make the pen ready for use the
reservoir D is rotated so as to open the valve A sufficiently to cause the ink to flow at
the desired rate, to suit the writer. The thumb of the writer should then be placed
over the air vent e and the cap E pulled off the nib. The act of pulling off the cap
with the air vent closed creates a partial vacuum in its interior which causes a suction
on the ink supplying duct communicating with the open port or ways through the
valve A and draws the ink therethrough and at the same time clearing away any slight
obstruction which may be in the feeding tube or elsewhere. In the event of any
little obstruction occurring during the writing, this may he removed by placing the
cap on the nib, closing the air vent and pulling the cap off again.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is
1. In a fountain pen a concial or conoidal valve having peripheral ports or ways
therethrough fitted in the pen barrel, and a tubular extension to the ink reservoir
screwing into said barrel and adapted to close or partially close the ports in the valve
substantially as described and for the purposes stated.
2. In combination with a fountain pen of the kind indicated in the preceding
claim, a nib cap having an air vent therein for the purpose herein described.
Deted this a
1007
F. W. GOLBY,
36 Chancery Lane, London, W.C., Patent Agent for the Applicants.