An Improvement in Holders for Reservoir Fountain Pens.
Year: 1890

page_text: Date of Application 1st Mar.. 1890
Complete Specification Left, 4th June, 1890-Accepted, 5th July, 1890
PROVISIONAL SPECIFICATION.
An Improvement in Holders for Reservoir Fountain Pens.
I CHARLES WOODBURY ROBINSON of number Sixteen Holborn Bars London County
of Middlesex, Merchant do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to effect an improvement in holders of reservoir
fountain pens whereby leakage of ink is prevented from the upper end of the tubular
holder. To carry out my invention I construct a tubular holder and in conjunction
therewith close the upper end with a stopper of cork india rubber or other elastic
material provided with a suitable shoulder for insertion into the tube leaving a portion
Such cork stopper
thereof projecting for fitting of cap upon when the pen is in use.
is likewise pierced through the centre for the purpose of fixing the air tube therein
and allowing access of air to enable the ink to flow properly from the pen. It is
obvious that my said improvement consisting of the application of cork or elastic
material to the upper end of tubular holders in reservoir fountain pens, with modifi-
cations, may be used with utility in the prevention of leakage.
Mach 1900
CHARLES WOODBURY ROBINSON.
COMPLETE SPECIFICATION.
An Improvement in Holders for Reservoir Fountain Pens.
I, CHARLES WOODBURY ROBINSON of 16 Holborn London Gentleman 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 improvements in stylographic or fountain pens and has for
its object, means for starting or feeding a small quantity of ink to the stylograph
before commencing to write. For this purpose the tube forming the ink reservoir is
fitted at the end furthest from the stylograph with a plug formed of soft rubber, cork,
or other similar elastic material. This plug is formed with a central recess into which
fits tightly an inner central air tube which may also be fitted with another smaller air
tube, to the outer end of which is fixed by means of a small elastic tube, the
stylographic writing point or needle. The recess in the elastic plug forms an air space
to which air may be fed by means of a minute hole or passage leading therefrom to
the outer end of the plug. A part of the plug containing the upper portion of the
recess before mentioned projects beyond the reservoir tube to which it is fitted, and
when is required to use the pen the sheath or cover forming a protector to the needle
point is removed therefrom and fixed over the projecting end of the plug. The
operation of fixing the sheath or cover upon the projecting end of this elastic plug
compresses the air within the air space which is continued beyond the outside tube,
and forces the air along the air tube and out through a small hole near the end of the
small tube. The air passing through this hole starts or forces a small quantity of ink
to the needle point and thus prepares the pen for immediate use.
In order that my said invention may be more fully understood I will describe the
same with reference to the accompanying sheet of drawings in which Fig. 1 is a
longitudinal section of my improved pen. Fig. 2 is an outside view thereof. Fig. 3
is an enlarged section of the plug with a portion of the reservoir and air tubes, and
Fig. 4 is a cross section through line A B of Fig. 3, a is the outer tube forming the
reservoir and holder, and 6 is the stylographic or writing end screwed thereto and
provided with the usual platinum point c, and d is the elastic plug fitting tightly into
the other end of the tube a so as to prevent leakage of ink. e is a recess forming an

page_text: air
space within the plug, and into which fits tightly one end of an inner air tube f
To this latter tube is also fitted a smaller tube g to which is connected by means of
the small rubber tube h, the needle point i, k is the sheath or cover which protects the
needle point when the pen is not in use, but which when the pen is required for
writing is fixed over the projecting end of the plug d.
As the sheath is forced or screwed on the end of the plug it compresses the latter
and forces the air from the recess e along the tube f and out through a perforation
at the end of the tube g, thus forcing or feeding the ink to the needle point to start
a flow of ink. In some the tube g may be dispensed with, the tube which should
be formed of the best black rubber, being fitted to the end of the tube fand is the
means of giving the necessary resiliency to the needle.
A small perforation m leads from the recess e to the outer end of the plug and the
sheath may be likewise perforated at n for admittance of air to the plug. The tube a
is filled with ink by removing the plug d.
Having now fully 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) In fountain pens the elastic plug d formed with air space e and perforation m,
fitted into the end of the reservoir tube in such a manner that the upper portion of
the air recess e projects beyond the end of the said tube substantially as before
described in this specification and illustrated by the accompanying drawings for the
purpose of starting a minute supply of ink to the pen point.
(2) In fountain pens an elastic plug formed with an interior air space in commu-
nication with the reservoir tube and so fitted into the end of the said tube that a
compression of the elastic plug will start a flow of ink to the pen point, all as before
described in this specification and illustrated by the accompanying drawings.
Dated this 3rd day of June 1890.
RAYNER & CASSELL,
37, Chancery Lane, London, W.C., Agents for the Applicant.