IMPROVEMENTS IN RESERVOIR PENHOLDERS
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said James Douglas Carter at the
Office of the Commissioners of Patents on the 13th August 1883.
JAMES DOUGLAS CARTER of 3 Dyers Buildings Holborn in the County of
Middlesex "IMPROVEMENTS IN RESERVOIR PENHOLDERS
"
: The object of my invention is to make réservoir penholders in such manner that
nibs of any length can be used in the one holder. Hitherto the tongue or capillary
tube which leads from the reservoir to the point of the nib has been a fixture or in
one length and the consequence has been that if a longer nib was inserted than
the holder was made to receive the tongue would not reach the point or if a shorter
nib the tongue would project.
Now according to my invention I make the tongue or capillary tube telescopic or
otherwise adjustable so that it can be drawn out to the length required to adapt it
to the particular nib inserted in the holder. In order to make the joint air tight
I prefer to use a piece of india rubber tubing stretched over the outer and sliding
tube as it is cheap and easy to manufacture, but the tube could be turned so that
the two parts would slide one within the other and be air tight; or the adjustment
of the two parts may be effected by means of a tight fitting screw.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Douglas Carter in the Patent Office on the 12th February
1884.
JAMES DOUGLAS CARTER of 3 Dyers Buildings, Holborn in the County of
Middlesex. IMPROVEMENTS IN RESERVOIR PEN-HOLDERS "
The object of my invention is to make reservoir pen-holders in such manner
that nibs of any length can be used in the one holder. Hitherto the tongue or
capillary tube which leads from the reservoir to the point of the nib has been a
fixture or in one length and the consequence has been that if a longer nib was
inserted than the holder was made to receive the tongue would not reach the point
or if a shorter nib the tongue would project.
Now according to my invention I make the tongue or capillary tube telescopic
or other-wise adjustable so that it can be drawn out to the length required to
adapt it to the particular nib inserted in the holder. In order to make the joint
air tight I may use a piece of india rubber tubing stretched over the outer and
sliding tube as it is cheap and easy to manufacture, or the tube can be turned so
that the two parts will slide one within the other and be air tight, or the
adjustment of the two parts may be effected by means of a tight fitting screw.
In the accompanying drawings. Figure 1 is an external view and Figure 2 a
longitudinal section of a reservoir penholder made according to my invention.
The capillary tube is divided into two parts ab the part a being free to slide in
the part b so that it can be drawn out to the length required to adapt it to the
particular nib inserted in the holder. c is a tube or ferrule of india rubber
stretched over the joint of the two parts ab to make them air tight.
In order to facilitate the adjustment of the sliding part or tube a so that it may
properly press against the nib, I in some cases make the inner end of this tube in
the form of a ball as seen at din Figure 3 so that the tube can rock or move thereon
and be made to press against the nib. An india rubber tube or ferrule such as c
Figures 1 and 2 may be used with this modification but if the ball d be made to
fit the tube b tightly the india rubber tube will not be necessary.
Figure 4 shews the pen-holder with a nib inserted therein.
Having now described the nature of my said invention and in what manner the
same is to be performed I declare that I claim :—
1. Making reservoir penholders with adjustable tongues or capillary tubes
substantially as and for the purpose hereinbefore described.
2. The reservoir penholder with adjustable tongue or capillary tube represented in
Figures 1 and 2 and herein before described.
3. The reservoir penholder with adjustable tongue or capillary tube represented in
Figure 3 and herein before described.
In witness whereof I the said James Douglas Carter have hereunto set my
hand and seal this eleventh day of February One thousand eight hundred and
eighty four.