IMPROVEMENTS IN THE CONSTRUCTION OF SYPHONS FOR CLEANSING THE POINTS OF, AND SUPPLYING INK TO, RESERVOIR PENS, AND FOR OTHER ANALOGOUS PURPOSES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by James Douglas Carter and John
Augustus Baker at the Office of the Commissioners of Patents on the
6th January 1882.
"
JAMES DOUGLAS CARTER, of King Street, Finsbury Square, Manufacturer, and
JOHN AUGUSTUS BAKER, of Finsbury Pavement, Merchant both in the City of
London IMPROVEMENTS IN THE CONSTRUCTION OF SYPHONS FOR CLEANSING
THE POINTS OF, AND SUPPLYING INK TO, RESERVOIR PENS, AND FOR OTHER
ANALOGOUS PURPOSES
"
This Invention relates to certain improvements in instruments known as syphons
whereby the same are rendered specially suitable for filling and cleansing reservoir
pens, stylographic pens, ink pencils and other similar writing instruments.
Syphons constructed in accordance with this Invention consist essentially of a
tube made of any suitable material but, by preference, of vulcanite or other non-
corrosive substance. One end of the said tube is tapered and has formed thereon
one or more shoulders. The said tube is, in some cases, formed of one or more
pieces fitted together by screws, or in any known and suitable manner.
A cap or
cover of any desired length and material constructed to be placed over the tapered
end of the tube so that its open end will come into juxta-position with one of the
before mentioned shoulders.
The said cap or cover so screws on to, or fits over, the said end of the tube as to
securely close the same and thus prevent or check any escape of liquid therefrom,
whilst at the same time it receives and contains any liquid that may escape during
the closing of the end of the tube as above described.
The object of forming more than one shoulder on the tube is to enable the cap
to be placed in position without coming into contact with any ink or other liquid
that may be on the extreme end of the tube. In some cases the closed end of the
cap is made removable, or a plug is arranged to fit in an aperture formed therein,
and to the said removable end or plug is connected a rod, wire or other analogous
contrivance which will be found convenient for removing any particles of dust,
corrosion or other obstacles from the interior of the ends of the reservoir pens or
other instruments above referred. In some cases, instead of making the end of the
cap removable or employing a removable plug as lastly described, the said rod or

page_text: wire is connected to the centre of the interior of the head of the cap. When the
cap is placed on the tube of the syphon the said rod or wire will pass through the
point of the said tube, and may, if desired, be sufficiently long to extend the whole
length of the same.
That end of the tube of the syphon, which is not tapered, is formed with, or
without, a ridge or projection to suit the application of the material of which the
contrivance for producing the suction is formed, the mouth of the said contrivance
(by preference an unpunched teat or bulb of india rubber or other suitablo
elastic material) being secured on to, or within, the end of the tube by any suitable
means. If desired the said teat or bulb can be wholly or partially encased by a
cover of any suitable material but, by preference, of the same material as the
tube.
Instead of employing a teat or bulb as lastly described the suction is in some
cases produced by means of a piston and piston rod, which latter is provided with
a cap or plug for closing the end of the syphon tube when not in use, and the said
rod may be solid or hollow as desired. A projection or stop is, in some cases,
formed or placed in the said tube to limit the stroke or movement of the
piston.