IMPROVEMENTS IN FOUNTAIN PENS.
Year: 1883

page_text: LETTERS PATENT to James Morton of Charterhouse Square in the City of
London for an Invention of "IMPROVEMENTS IN FOUNTAIN PENS.".
PROVISIONAL SPECIFICATION left by the said James Morton at the Office
of the Commissioners of Patents on the 12th May 1883.
1.
JAMES MORTON of Charterhouse Square in the City of London " IMPROVEMENTS
IN FOUNTAIN PENS
»
This Invention relates to that class of Fountain pens in which ordinary or other
nibs are used, and which are known as Antistylographic Pens, the object of the
invention being to avoid the inconveniences which arise from the employment of
an air tube in the case for supplying air to the reservoir.
}
The air tube, it is well known, is a source of great inconvenience in all anti-
stylographic pens, as it forms a channel down which the ink may run from the
reservoir into the pocket of the owner, and also the ink is liable to coagulate in
the tube, and prevent the entrance of air when required.
.
In carrying out my invention I dispense with the use of an air tube entirely.
The barrel or case of the pen and the point may be made in the usual manner.
The ink duct for conveying the ink from the reservoir to the nib is made of the
same diameter, to near the bottom; and a short distance above the ink opening a
small hole is made to admit air to the duct.
.
The effect of placing the air hole in this position will be to force the ink which
is below the hole, downwards to the nib so soon as the writing commences, the ink
orifice being closed until that time by the nib. The pressure of the air in this
hole will also tend to prevent the flow of ink through it when the pen is not in
use. But in order further to prevent the flow of ink from the reservoir when
the pen is not in use, I close the upper end of the barrel or case by a screwed plug.
To this plug is attached a rod, on the end of which is a conical or other suitably
shaped valve. When the plug is screwed down tight, this valve will close the end
of the ink duct, thus reducing the pressure of the column of ink on the air opening
to a minimum.
The upper end of the reservoir may be rendered air tight by inserting therein
a block of soft rubber or fine cork,-through which the valve rod will work.
To prevent the formation of a vacuum in the reservoir, a little of the air which
enters by the air hole will find its way upwards into the reservoir.

page_text: "
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Morton in the Great Seal Patent Office on the
12th November 1883.
:
JAMES MORTON of Charterhouse Square in the City of London
IN FOUNTAIN PENS"
"IMPROVEMENTS
This Invention relates to that class of fountain pens in which ordinary or other
nibs are used and which are known as Anti-stylographic pens, the object of the
Invention being to avoid the inconveniences arising from the employment of an air
tube in the barrel or case for supplying air to the reservoir.
The air tube it is well known is a source of great inconvenience in both stylo
and anti-stylographic pens, as it either forms a channel down which the ink may
run from the reservoir into the pocket of the owner or the ink coagulates therein
and prevents the entrance of air when required.
In carrying out my Invention I dispense entirely with the use of an air, tube.
In the accompanying drawing Fig: 1 is a longitudinal section of my improved
fountain pen ready for use.-Fig: 2 is a similar view of my pen when out of use
and Figures 3 and 4 are detailed figures showing slight modifications in the position
of the air inlet.
a is the barrel or case, 6 a socket to receive the point c, d is the nib, e the ink.
.outlet.
The ink duct for conveying the ink from the reservoir to the nib. is made of the
same diameter to near the bottom. A short distance above the ink outlet e a small
hole fis made to admit air to the duct..
By placing the air hole f in this position the ink which is below the hole will
be forced by the external pressure of the air downwards to the nib so soon as
the writing commences the, ink outlet being practically closed until that time
by the nib.
The pressure of the air on the hole f will tend to prevent the flow of the ink
through it when the pen is not in use. But in order more effectually to prevent
the flow of ink from the reservoir when the pen is not in use I close the end of the
ink duct by a conical or other suitably shaped valve h, which has its seat on the
end of the socket b as seen at Fig: 2:
This valve is attached to the end of a rod k which projects through the upper
end of the barrel or case a and is connected to a screwed plug -When the plug
is screwed down tight the valve h will close the end of the ink duct (see Fig: 2)
thus reducing the pressure of the column of ink on the air opening to a minimum.
The upper end of the barrel or case a may be rendered airtight by inserting
therein a block of soft rubber or fine cork through which the valve rod k will
work.
A little of the air which enters by the air hole will find its way upwards
through the ink into the reservoir and thus the formation of a vacuum in the
reservoir will be avoided:..
In the modification Fig: 3 the air hole f is made in the side of the point.c
while in that in Fig: 4 the air opening is made in a shoulder of the point and
through the bottom of the socket b so that it may be covered by the ordinary
cap g when the pen is not in use as will be clearly understood from the drawing:
Having now described the nature of my Invention for "Improvements in

page_text: Fountain Pens" and explained the manner of carrying the same into effect,
I claim:-
The construction of fountain pens substantially as herein shewn and described
whereby a central air tube as heretofore is rendered unnecessary.
In witness whereof I the said James Morton have hereunto set my hand and
seal the twenty third day of August in the year of our Lord One thousand eight
hundred and eighty three.
JAMES MORTON (L.S.)