An Improved Form of Stylographic Pen.
Year: 1891

page_text: Date of Application, 25th Aug., 1891
Complete Specification Left, 21st June, 1892-Accepted, 23rd July; 1892
PROVISIONAL SPECIFICATION.
An Improved Form of Stylographic Pen.
I CHARLES PATRICK JOSEPH FITZSIMON of No. 5 Ellis's Quay Dublin, Clerk,
do hereby declare the nature of this invention to be as follows
--
A reservoir of cylindrical or other shape made of metal or other suitable material
to hold ink or writing fluid fitted at one end with an air compartment and at the
other or writing end with a cone shaped plug..
Inside the air compartment is placed a spiral spring in the centre of which is
another plug (cone shaped also at one end) which projects outside the air com-
partment. The cone shaped end enters the reservoir and acts as a valve to stop an
air passage leading from the air compartment to the reservoir.
This plug is fitted on to a rod, which may be made of metal or otherwise, which
passes through a tube in the centre of the reservoir from one end to the other and
projects slightly outside at the writing end. The plug is regulated by the spiral
spring which presses against the top of the air compartment. The spiral spring is
actuated by pressing on the writing point and the air passage is opened or closed at
will. Inside the reservoir at the writing end is screwed on to the rod before
mentioned a plug which stops the flow from the reservoir when the pen is not in
These plugs also act as regulators to lengthen or shorten the writing
use.
point.
The pen when complete may be fitted with a cap to go on at either ends.
C. P. J. FITZSIMON.
COMPLETE SPECIFICATION.
An Improved Form of Stylographic Pen.
I, CHARLES PATRICK JOSEPH FITZSIMON, late of No. 5 Ellis's Quay, and now
of 6 Vincent Terrace, Glasnevin, Dublin, Clerk, 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 :-
This invention has reference to an improved form of stylographic pen of simple
and effectual construction.
The invention consists of a reservoir of cylindrical or other shape, made of metal
or other suitable material to hold ink, or writing fluid, fitted at one end with an air
compartment, and at the other, or writing end with a cone shaped plug.
Inside the air compartment is arranged a spiral spring in the centre of which is a
conical shaped plug which projects outside the air compartment, and enters the
reservoir, acting as a valve to close an air passage leading from the air compart-
ment to the reservoir.
This plug is mounted on ad which passes through a tube in the centre of the
reservoir from one end to the other, and projects slightly outside at the writing end,
and forms the writing point.
The plug is regulated by the spiral spring, one end of which presses against the
top of the air compartment and is actuated by pressing on the writing point, when
the air passage is opened or closed at will.
Inside the reservoir at the writing end is screwed on to the rod before mentioned,
a plug, which stops the flow from the reservoir when the pen is not in use.
The pen when complete may be fitted with a cap to go on at either ends..

page_text: In order that my said invention may be more readily understood, I will describe
the accompanying drawings:-
Fig. 1, represents outer view of my improved stylographic pen complete ;
Fig. 2, shows a longitudinal section complete ;
Fig. 3, the rod which passes through from end to end; and
Fig. 4, the centre tube, air compartment, and caps detached.
a, is the outer cylindrical case or reservoir, b, the air compartment closed by the
cap c; d, and d², the cone shaped plugs mounted on the rod e. This rod is provided
with a screw joint in the centre for the purpose of facilitating its removal, and also
to enable the rod to be lengthened or shortened as may be required, so as to cause
the plugs d, and d¹ to drop accurately into their respective seats d', and d³, and
make good air-tight valves. f, shows the spiral spring, and g, the central tube
through which rod e, passes as shown in Fig. 2.
The action of the apparatus is briefly as follows:-The writing plug h, is
removed and ink introduced to the reservoir a, when the writing plug is
replaced.
So long as the pen is thus at rest, the reservoir is sealed by the plugs d and d¹
pressing against their respective seats d, and d³, and no ink will flow.
Immediately upon using the pen, pressure on the point of rode (which projects
slightly beyond point of writing plug) will release valves d, and d³, allowing air to
pass from air compartment into the reservoir, and simultaneously allowing the ink
to flow to writing point. Thus so long as pressure is maintained at the writing
point, ink will flow, and immediately upon releasing this pressure the valves d²,
and d³, are closed automatically by the action of the spring facting on rod e.
Having now particularly described and ascertained the nature of my said inven- 2
tion and in what manner the same is to be performed, I declare that what I
claim is :-
First. In apparatus for writing with ink or other fluid, the use of a 'rod e,
provided with a screw joint in its centre, and fitted with cone shaped plugs d and d¹,
and acted upon by a spiral spring, whereby the flow of ink is controlled and a
regulated by pressure on the writing end of said rod, in the manner substantially as
herein described.
Second. In apparatus for writing with ink or other fluid, a rod e, provided with
screw joint and fitted with cone shaped plugs d, and d', and acted upon by spiral
spring, in combination with an outer reservoir a, air compartment b, central tube, ย
and writing plug h, all arranged and operating in the manner substantially as herein
specified and set forth.
Dated this 15th day of Tuma 1000
g,
J. K. FAHIE & SON,
9, Westland Row, Dublin, Agents for Applicant.