Year: 1887

page_text: Date of Application, 18th Mar., 1887.
Specification Accepted, 19th Apr., 1887.
I JENS SCHMACKELSEN of Altona, Prussia, 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 fountain pen and has for its object to
regulate the flow or feeding of ink from the reservoir to the pen whilst the latter
is in use. According to this invention the feeding of ink to the pen is automatically
effected by the pressure (or changes of pressure) exerted by the writer upon the
penholder while at work.
The invention is illustrated by the accompanying sheet of drawings in which
Fig. 1 represents an outer view of the pen or holder, as held in position for use.
Fig. 2 is a longitudinal view partly in section, and Fig. 3 a cross section through
that part of the pen held by the finger ends while writing.
The upper part A of the holder contains the reservoir for reception of the ink. To
the bottom end of this part A is attached an elastic tube e, made of india-rubber
or other suitable material; the other end of said tube e being furnished with a ring d
for reception of pen f
Inside of tube e and between A and d is a body m made of wood, ebony, or other
material indestructible by ink; this body m is of smaller diameter than e so that
a free space remains between body m and tube e, and said body m is kept in position
within the tube by two or more circular enlargements i, . The lower end of body m
is passed through ring d (as will be understood with reference to the drawings) and
leaves a free ring shaped space between itself and ring for insertion of the
pen. The enlargements and are each furnished with one or more small
holes so that ink can pass from the reservoir to the pen when pressure is exerted
upon the ink contained in the reservoir.
The operation of the pen is as follows:-When the pen is to be used, ink is forced
from the reservoir to the pen by a piston or other well known means for this purpose

page_text: (this part is not shown in the drawings). The pen is then held by the writer
in the usual manner as shown in Fig. I, and the pressure of the fingers exerted
onto the elastic tube e (which pressure while writing involuntarily changes in strength,
and ceases for moments at rest) has the effect upon that part of the ink accumulated
between body m and tube e to force it to the pen to feed same. The size of holes
to regulate the feed must be in a certain proportion to the ring shaped free space
leading the ink to pen f. These openings must also be made in proportions with
regard to the lighter or heavier hand of the person using the pen.
It will be seen from the above description that after having once brought the pen
in action the writer himself produces a regulated feeding of the pen, by the involuntary
changes of pressure of the fingers holding the pen exerted upon the elastic part e.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed 1 declare that what I claim is:
In fountain pens the device for regulating the flow of ink from the reservoir to the
pen consisting of the elastic tube e, body m, and projections with holes » as herein
described and shown in the accompanying drawings.