Year: 1886

page_text: I, JOHN DOUGLAS PERRETT of 15 Castle Street, in the Town and County of
Dumbarton, North Britain, Stationer do hereby declare the nature of this invention
to be as follows:-
This Invention, which relates to an improved reservoir pen, has reference to
those pens in which the holder consists of a metallic or other tube to contain a
supply of ink or other writing fluid to feed an ordinary metallio or other nib for a
prolonged period of writing.
In accordance with my improvements the top of the holder or reservoir tube is
provided with a screwed cap by means of which the admission of air to control
the supply of ink to the nib is regulated. The said cap is provided centrally within
it with a pointed plug or needle capable of fitting, when the cap is screwed on to
the end of the holder, into the contracted opening at the bottom end of a short
conical tube, the mouth or larger opening of which is fixed within the holder at the
top thereof. The lower end of the holder is provided with a long tube gradually
contracting from the full size of the holder to a point, the said point being brought
to bear against the underside of the nib to conduct the ink thereto. The portion
of the holder to which the ink conducting tube is attached forms a detachable
portion of the holder, the said portion being screwed to the holder. The ink con-
ducting tube has its mouth fixed within the screwed extremity of the detachable
portion, the contracted or pointed end of the said tube projecting out through the
said portion and bearing freely against the nib which is capable of being fitted to
the end of the said portion after the manner of an ordinary pen-holder.
In the operation of filling with fluid the cap is screwed down upon the top of the
holder and the detachable portion is unscrewed from the opposite end of the holder.
A conical filler, which I prefer to employ with my improved pen, has a screwed
portion or neck to fit the holder and by means of this filler the ink is readily
poured into the holder; when filled the filler is unscrewed and the detachable nib
portion is screwed on instead.
The extremity of the pointed or ink conducting tube is preferably formed with
a spoon-shaped portion preferably forming a slightly projecting portion, the outlet
for the ink being formed in the centre of the spoon. The outlet is reduced at this
part to a pin-hole and I prefer to have a corresponding shallow groove or trough
formed in the surface of the spoon from the outflow aperture to the point or
CD 011

page_text: extremity of the spoon. When the nib is fixed in the end of the detachable
portion the spoon bears against the underside of the nib preferably within one-
eighth of an inch or so of the extremity of the nib, the groove in the spoon
preferably coinciding with the split of the nib, which split on nib being opened by
the action of writing causes the fluid flow downwards to the extreme point of
the nib.
The screwed cap at the top of the holder has its head pierced with a pin aperture,
the said aperture being continued through the stem of the needle to about midway
thereof the outlet of the aperture being at the side of the said needle. The necessary
air to allow of the flow of ink is in this manner allowed to enter through the top
of the cap into the conical tube and is allowed to flow through into the holder or
ink reservoir in regular and gradual quantities as required, or the supply of air
stopped altogether, when the pen is not in use by screwing or unscrewing the cap
and consequently regulating the amount of valvular opening. between the point of
the tapered needle and the contracted aperture of the conical tube or closing the
aperture. An excess of screw is preferably formed upon the top of the holder to
allow any wear between the needle and its seat to be taken up.
The head of the cap and that of the detachable portion of the holder are
preferably milled to facilitate screwing off and on.
A tubular protector open at both ends is preferably provided upon the holder.
Din winth I of Tan1002

page_text: I, JOHN DOUGLAS PERRETT, of 15 Castle Street, in the town and county of
Dumbarton, North Britain, Stationer, do hereby declare the nature of my inven-
AN IMPROVED RESERVOIR PEN," and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
tion for
"
statement:-
My Invention, which relates to an improved reservoir pen has reference to those
pens in which the holder consists of a metallic or other tube to contain a supply of
ink or writing fluid to feed an ordinary metallic or other nib for a prolonged
period of writing.
In an improved pen constructed in accordance with my present Invention, the
top of the holder or reservoir tube is provided with a screwed cap by means of
which the admission of air to control the flow of ink to the nib is regulated. The
said cap is provided with a pointed plug or valve capable of fitting, when the cap
is screwed on to the end of the holder into a valve seat which is constituted by
the contracted opening at the bottom end of a short conical tube the mouth or
larger end of which is fixed within and at the top of the holder. The lower end
of the holder is provided with a long tube gradually contracted from the upper to
the lower end, which bears against the underside of the nib and conducts the ink
thereto. The portion of the holder to which the ink-conducting tube is attached,
forms a detachable portion which is screwed to the said holder.-The ink con-
ducting tube has its mouth fixed within the screwed extremity of the detachable
portion, the lower end of the said tube projecting out through the said portion and
bearing freely against the underside of the nib which is carried in the end of the
said portion after the manner of an ordinary pen-holder.
For filling the reservoir with writing fluid, the cap is screwed down upon the top'
of the holder which is inverted and the detachable portion then unscrewed from the
opposite end thereof. A conical filler which I prefer to employ with my improved
pen, has a screwed portion or neck to fit into the holder and by means of this filler,
the ink is readily poured into the holder; when filled, the filler is unscrewed and
the detachable nib portion replaced.
The extremity of the pointed or ink-conducting tube is preferably formed with
a spoon shaped portion preferably forming a slightly projecting portion, the outlet
for the ink being formed in the centre of the spoon. The outlet is considerably
reduced at this part and I prefer to have a groove or trough formed in the surface
of the spoon and extending from the outflow aperture to the point or extremity of
the spoon. When the nib is fixed in the end of the detachable portion, the spoon
bears against the underside of the nib preferably within one-eighth of an inch or
so from the point thereof, the groove in the spoon preferably coinciding with the
split of the nib, which split on being opened by the action of writing, causes the
fluid to flow downwards to the point of the nib.
The screwed cap at the top of the holder has its head pierced with a small
aperture which communicates with an aperture extending downwards into the
stem of the needle or valve to about midway thereof, the outlet of the aperture
being at the side of the said needle or valve. The air necessary to allow of the
flow of ink, is by these means allowed to enter through the top of the cap into the
conical tube, and to flow thence through into the holder or ink reservoir, by
unscrewing the beforementioned cap; or, by screwing the said cap downwards the'

page_text: supply of air and consequently the outflow of writing fluid is stopped altogether.
An excess of screw is preferably formed upon the top of the holder to allow any
wear between the needle or valve, and its seat, to be taken up.
The head of the cap and that of the detachable portion of the holder are
preferably milled to facilitate screwing off and on.
A tubular protector is preferably provided upon the holder.
In order that my Invention may be properly understood and readily carried into
effect, I will now proceed to describe the drawings hereunto annexed.
Figure 1, is an elevation of an improved reservoir pen constructed according to
my present Invention when not in use for writing, that is to say in an enclosed
condition, convenient for being carried in the pocket.
-
Figure 2, is a side elevation of the same as arranged for writing, the enclosing
cap or cover being temporarily secured upon the upper end of the holder as herein-
after explained.
Figures 3 and 4, are respectively elevations of the under and upper sides of the
same with the enclosing cap or cover removed.
Figure 5, is an elevation of the filler by means of which the charging of the
reservoir with writing fluid is greatly facilitated.
Figure 6, is an elevation of a portion of the improved pen inverted and with the
filler attached thereto, that is to say, in the condition ready to be charged with
writing fluid.
Figures 7 and 8, are respectively an elevation and a vertical section of the
lower part of my improved pen drawn to an enlarged scale and hereinafter more
particularly described.
Figure 9, is a view partly in section and partly in elevation of the upper part of
the same drawn to a further enlarged scale.
The improved reservoir pen holder as constructed according to my present
Invention is provided with the tubular reservoir 1, which is of any desired
capacity to contain a supply of writing fluid and the upper end of which is screwed
externally as shewn at 2, to engage with the thread formed internally at the lower
end of the cap 3-The upper end of the cap 3, as shewn at Figure 9, is closed in
save for the small aperture 4, which admits air therethrough and into the vertical
passage.5, which is formed in the upper part 6, of the conical plug or valve 7.-
This plug or valve 7, is soldered or otherwise secured at its upper part 6, to the
cap 3, and the pointed or lower end of the said conical plug or valve 7, extends
down into the hollow conical valve-seat 8, and the air which is admitted through
the aperture 4, to the vertical passage 5, is conducted through the oblique hole 9 to
the outside of the valve 7.-The valve seat 8, is screwed as shewn at Figure 9, or
otherwise secured into the upper part of the reservoir 1, and the opening at the
lower part of the valve seat 8, is one preferably of very small area. At Figure 9,
of the accompanying drawings the pointed or lower end of the valve 7, is repre-
sented as disengaged or raised out from the valve seat 8, in which condition air is
free to enter the reservoir 1, by way of the openings and passages 4, 5, and 9 and
valve seat 8, respectively and the writing fluid is thereby free to flow downwards
out from the reservoir 1.--When it is desired to stop the outflow of writing fluid
from the reservoir 1, the cap 3, is screwed downwards and the pointed or lower
end of the conical valve 7, thereby forced into the valve seat 8, and the admission
of air into the reservoir 1, thereby prevented. Any wear between the valve 7, and
its seat 8, may be compensated by means of the extra length of screw 2, formed
externally upon the upper end of the reservoir 1.
For conducting the writing fluid from the reservoir 1, to the front of the nib 10,
which upon the accompanying drawings is shewn in dot and pick lines. I solder.
or otherwise secure the gradually contracted or tapered tube 11, into the lower or
nib holding portion 12, of the holder. As shewn more particularly at Figure 8,
the upper end of the tapered tube 11; opens into the lower end of the reservoir 1,
and the lower and smaller end of the said tapered tube is formed with the flat
or approximately flat-faced projection 13, which bears against the underside of the.

page_text: nib 10.-Through the face of the projection 13, there is formed the circular
aperture 14, extending downwards from which to the lower extremity of the
tube 11, is the slit 15, which, with the beforementioned aperture 14, constitute
the only opening from the lower end of the tube 11.-When the nib 10, is in its
proper position in the nib holder 12, the split of such nib is immediately over the
beforementioned opening in the projection 13, so that the writing fluid flowing out
through such opening passes directly on to the nib and down to the writing point
thereof. The upper end of the nib holding portion 12, of the holder is screwed
externally to engage with a screw thread formed internally in or upon the lower
end of the reservoir 1, and the India-rubber or equivalent washer 16, (Figure 8) is
provided at this part within the cylindrical collar 17, in order to ensure a tight
joint being made.
To enable the hereinbefore described pen to be carried in the pocket without.
risk of the writing fluid leaking out or of damaging the uib. I provide the
cap 18, which, when the said pen is not in use for writing purposes is placed over
the otherwise-exposed lower end of the tube 11, and the nib 10, in the manner
represented at Figure 1; when in use for writing the cap 18, is removed from the
lower end of the holder and may be temporarily placed over the upper end of the
holder in the manner shewn at Figure 2, of the accompanying drawings.
To charge the reservoir with writing fluid, the valve 7, is screwed tightly down
upon its seat 8, in the manner herein before described and the holder inverted, the
lower or nib holding portion 12, is then detached from the reservoir 1, and the
writing fluid may be poured in from a bottle or from any other vessel. In order
however to facilitate the pouring in of the writing fluid I provide a filler 19,
which as shewn more particularly at Figure 5, is screwed at its lower part so that
it may be connected to the end of the reservoir in the manner represented at
Figure 6.
To facilitate the screwing and unscrewing of the cap 3, the lower or nib holding
portion 12, and the filler 19, these parts are provided with milled surfaces as
shewn upon the drawings to enable them to be more securly grasped.
Having now particularly described and ascertained the nature of my Inven-
tion and in what manner the same is to be performed I declare that what
I claim is,-
First The general arrangement and combination of parts constituting the
improved reservoir pen holder; substantially as and operating in the manner
herein before described with reference to the accompanying drawings.
Second The means for regulating the admission of air to the reservoir 1, and
consequently the outflow of writing fluid therefrom consisting of the screwed
cap 3, the valve 7, and valve seat 8, and the openings and passages 4, 5 and 9, all
substantially as and operating in the manner and for the purposes hereinbefore
set forth with reference more particularly to Figure 9 of the annexed drawings.
Third The means for conducting the writing fluid from the reservoir 1, to the
nib 10, consisting of the tapered tube 11, the lower end of which is formed with
the projection 13, having the apertures 14 and 15 in such position as to be
immediately below the split of the nib 10, all substantially as and for the purposes
hereinbefore described with reference more particularly to Figure 8, of the annexed
drawings.