A Filler to Charge Reservoir Pens, and for like Uses.
Year: 1896

page_text: A Filler to Charge Reservoir Pens, and for like Uses.
I, WILLIAM THOMAS SHAW, of 110 Bunhill Row, in the City of London,
Director of Thomas De La Rue & Co. Ld. do hereby declare the nature of this
invention to be as follows:-
My filler for reservoir pens is applied in connection with the cork or stopper of
an ink bottle.
It consists of a curved stem of vulcanite passing through the cork and having
two capillary passages traversing it longitudinally. One passage when the bottle
is inverted allows the ink to pass out in a fine stream or very rapid succession of
drops, the other passage permits air to enter the bottle. The air passage extends
into the bottle beyond the ink passage so that when the hottle is inverted there is
a less depth of liquid (by say five eighths of an inch) over the end of the air
passage than there is over the entrance to the ink passage. I make both passages
of the same length so that on the outside the ink passage extends beyond the air
passage. Both passages I contract somewhat at their exit ends.
The instrument is so formed that its outer extremity or nozzle can be inserted
into the tube or reservoir to be filled; then, the bottle being inverted, the ink flows
till it reaches the outer extremity of the air passage; it then stops the entrance of
air into the bottle being checked.
In order that the bottle may be closed when out of use I provide a conical plug
and fit it into a hole formed transversely through the instrument immediately
outside the cork.
Both of the passages pass through the plug and by turning the plug they can
be closed, the contrivance constituting a double stop cock.
Dated this 12th day of June 1896.
COMPLETE SPECIFICATION.
A Filler to Charge Reservoir Pens, and for like Uses.
1, WILLIAM THOMAS SHAW, of 110 Bunhill Row, in the City of London,
Director of Thomas De La Rue & Co. Ld., 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 :-
My filler for reservoir pens is applied in connection with the cork or stop of an
ink bottle.
It consists of a curved stem of vulcanite passing through the cork and having
two capillary passages traversing it longitudinally. One passage when the bottle
is inverted allows the ink to pass out in a fine stream or very rapid succession of
drops, the other passage permits air to enter the bottle. The air passage extends
into the bottle beyond the ink passage so that when the bottle is inverted there is
Pin

page_text: a less depth of liquid (by say five eighths of an inch) over the end of the air
passage than there is over the entrance to the ink passage. I make both passages
of the same length so that on the outside the ink passage extends beyond the air
passage. The instrument is so formed that its outer extremity or nozzle can he
inserted into the tube or reservoir to be filled, then, the bottle being inverted, the
ink flows till it reaches the outer extremity of the air passage; it then stops, the
entrance of air into the bottle being checked.
In order that the bottle inay be closed when out of use I provide a conical plug
and fit it into a hole formed transversely through the instrument immediately
outside the cork.
Both of the passages pass through the plug and by turning the plug they can be
closed, the contrivance constituting a double stop cock.
Figure 1 of the annexed drawings is a side elevation of a pen filler or instrument
in accordance with my invention.
Figure 2 is a front elevation of the same.
Figure 3 shows a rear elevation of a modification in which a stop cock is
provided to close the passages.
a is a capillary tube or passage to admit air into the bottle. b is the tube or
passage by which the liquid issues. They are parallel to each other and are both
formed together preferably in vulcanite. The vulcanite is inserted into a hole in
a cork c and is cemented in its place. The cork is provided with a cap d. A
portion of the bottle is shown at e in Figure 1.
The inner end of the air tube at a¹ is preferably contracted and the passages
may also be contracted at their exit ends.
In Figure 3 f is a double stop cock which can be made to close both of the
passages when out of use so that no evaporation from the bottle may take place,
but even without the precaution of closing the passages by a stop cock I find the
evaporation to be inappreciable. Vulcanite is conveniently employed for the
construction of this instrument but other materials, as for example, china, may be
⚫employed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
-claim is :-
The filler or instrument substantially as herein described to charge reservoir
pens or for like uses.
.
1 LOOK
WM. THOS. SHAW.