Year: 1888

page_text: Date of Application, 7th Apr., 1888
Complete Specification Left, 7th Jan., 1889
Complete Specification Accepted, 12th Feb., 1
We, ARTHUR MARSHALL CHAMBERS, Colliery Owner, and WILLIAM DURANT,
Engineer, both of Thorncliffe, in the County of York, do hereby declare the nature
of this invention to be as follows:
Our invention relates to pens in which a reservoir of ink is provided which is
gradually supplied to the pen as required.
It is applicable to pens used for ordinary writing, but more especially to pens used
for making lines or dots in instruments used for recording any required data, such for
instance as the particular times when any movement or operation has been effected
a record of which it is desired to retain.
We take a tube of any suitable material, but preferably of glass, one end of which
is tapered down to a sufficiently fine point, whilst the other end is open.
Inside this tube we arrange a second smaller tube, of any suitable material, but
also preferably of glass, having through it a small passage open at both ends, and
we fit the upper end of this inner tube into a plug of cork or other suitable material
which fits tightly into the upper end of the outer tube. The lower end of the inner
tube is inserted into a plug which fits freely into the outer tube, or which fits tightly
into the latter but has a very small opening through it.
The lower side of this plug is adjusted at a short distance from the pointed end of
the outer tube. Through the smaller inner tube we pass a fine wire the lower end
of which passes freely through the hollow pointed end of the outer tube, whilst its
upper end is provided with a knob or button which, when the point protrudes for a
short distance through the point of the pen, rests upon the upper end of the inner
tube.
The upper part of the outer tube
recording fluid, by raising the upper
is supplied with any sufficiently fluid writing or
plug and inner tube sufficiently.
The centre of the outer tube has fitted round it a metal or other cylinder, the ends
of which recieve the open ends of two corresponding caps, one of which fits upon
each end of the pen so as to keep the latter clean and ready for use.

page_text: When it is desired to use the pen, the cap which covers its point is removed, and
the latter is pressed against the paper or other surface, the point of the wire being
pressed up into it. As the pen is used, the writing fluid passes through the hollow
point whilst any desired writing or marks are made, a fresh supply descending to
the point past or through the freely fitting lower plug, and air being admitted as
required through the central inner tube.
By removing the upper cap, the central wire can be moved up and down, and the
hollow point of the pen kept clear and clean.
The shape and details of the several parts of the improved pen may be varied more
or less to suit the particular purposes for which it is to be used.
D
.
.
EDWARDS & Co.,
35, Southampton Buildings, London
Agents for the Applicants.

page_text: Improvements in Reservoir Pens.
We, ARTHUR MARSHALL CHAMBERS, Colliery Owner, and WILLIAM DURANT,
Engineer, both of Thorncliffe, in the County of York, 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, and accom-
panying drawing, (that is to say)
Our invention relates to pens in which a reservoir of ink is provided which is
gradually supplied to the pen as required.
It is applicable to pens used for ordinary writing, but more especially to pens
used for making lines or dots in instruments used for recording any required data,
such for instance as the particular times when any movement or operation has been
effected a record of which it is desired to retain.
In order to put our invention in operation, we take a tube of any suitable material,
but preferably of glass, one end of which is tapered down to a sufficiently fine point,
whilst the other end is open.
Inside this tube we arrange a second smaller tube of any suitable material but also
preferably of glass, the passage through it being open at both ends, and we fit
the upper end of this inner tube into a central opening through a plug of india rubber
or cork or other suitable material which fits tightly into the upper end of the outer
tube.
The lower end of the inner tube is in contact with or inserted into a plug preferably
of india rubber which fits freely into the outer tube, or which fits tightly into the
latter but has a small opening through it or at its side.
The lower side of this plug is adjusted at a short distance from the tapered end of
the outer tube. Through the smaller inner tube we pass a fine wire the lower end
of which passes freely through the hollow pointed end of the outer tube, whilst its
upper end is provided with a knob or button which, when the point protrudes for a
short distance through the point of the pen, rests upon the upper end of the inner tube.
The upper part of the outer tube is supplied with any sufficiently fluid writing or
recording fluid, by raising the upper plug and inner tube sufficiently. Or, the central
wire may pass through the india rubber plug in the lower end of the taper tube, a
knob or projection being arranged upon it below the plug, so that if the wire is raised,
it lifts the plug and inner tube with it.
The continuation of the wire below the plug and through the opening in
the point of the glass tube may be made of very fine wires twisted together.
The centre of the outer tube has fitted round it a metal or other cylinder, the ends
of which receive the open ends of two corresponding caps, one of which fits upon each
end of the pen so as to keep the latter clean and ready for use.
The accompanying drawing is in illustration of our invention. Figure 1 is a section
through the case and caps of the pen. Figure 2 shews them separately. Figure 3 is a
section through the pointed tube, and figure 4 a section through the inner tube. Figure 5

page_text: shews the wire and lower plug, and Figure 6 is a section through the entire pen
when shut up. Figure 7 shews the pen in a position for use, with the lower cap
removed. a is the pointed glass tube, b is the inner smaller glass tube, and c
(figure 6) is a plug of cork or india rubber fitted into a and through which the
tube b passes. d is the lower plug in the tube a, and e is the central wire passing
through the plug d, and having a stop at below the plug. 9 represents the fine
wires passing through the point of the tube a, and h is a knob or handle at the upper
end of the wire e. A metal or other case i may be fitted upon the pointed tube a,
and may be fitted to receive moveable caps k, l. In Figure 6 the cap is shewn
provided with a hollow plug m to receive the point of the pen and preserve it from
injury.
In order to fill the pen with ink, both the caps k and are removed, and the hollow
point of the pen is introduced into an ink bottle or reservoir.
The wire e is then pulled up by its handle h and draws up with it the plug d and
the inner tube b, causing a vacuum so that the ink enters the outer tube.
When sufficient has been thus drawn in, the wire e and the inner tube 6 are
pressed down, until the points of the fine wires g project a short distance (preferably
about one sixteenth of an inch).
The pen is then ready for use, as shewn in figure 7, or if the caps k and are put
on it will remain ready for use for many months.
When the upper cap is removed, the central wire can be moved up and down,
and the hollow part of the pen kept clear and clean.
The shape and details of the several parts of the improved pen may be varied more
or less to suit the particular purposes for which it is to be used.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is:
:-
1. The combination of the pointed tube a, the inner tube b, plugs c, and moveable
plug d, and wire e substantially as and for the purposes described and shewn.
2. In combination with the tubes a and b, plugs c and d, and wire e, the case f
and moveable caps k and substantially as described and shown.
3. In combination with the tube a and cap k, the hollow plug m, substantially as
and for the purpose described and shewn.
Dated this 7th day of January 1889.