Improvements in Stylographic Pens.
Year: 1891

page_text: Date of Application, 7th Nov., 1891
Complete Specification Left, 19th May, 1892-Accepted, 25th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in Stylographic Pens.
GEORGE EDWARD SHAND 44, Barnsbury Road, Islington, London,
Stylographic Pen Manufacturer do hereby declare the nature of this invention to
be as follows
The construction of a chamber in the top part of the barrel, (or ink reservoir) of
a "Stylographic Pen."
The said chamber to consist of an air space formed above the termination of the
inner tube; the said inner tube being fixed in the solid part of the barrel left for
that purpose.
The top part of said chamber being formed of a solid piece or cap with a small
tube projecting through said cap into said air chamber.
The whole forming a complete trap to prevent ink which may be flowing
through the inner or air-tube from coming out of the air vent in the top part of
the pen.
Dated this 7th day of November 1891
COMPLETE SPECIFICATION.
Improvements in Stylographic Pens.
I GEORGE EDWARD SHAND of 44 Barnsbury Road London North, Manufacturer
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 improvement relates to the class of fountain pens known as stylographic
fountain pens and has for its object the prevention of leakage of ink through the
air vent of the pen by means of a specially constructed chamber in the air vent end
of the barrel or ink reservoir. The said chamber to consist of an air space formed
in the solid part of the barrel left for that purpose, above the termination of the
inner or air tube of the pen. The said inner or air tube being fixed in the solid
part of the barrel which forms the base of said chamber. The top part of said
chamber being formed of a solid piece, or cap, with a small bevel or taper shaped
tube projecting through said cap into said air chamber. The whole forming a
complete trap to prevent ink which may be flowing through the inner or air tube,
from coming out at the air vent in the top part of the pen, also a specially
constructed air tube extension made with a taper shaped end to fit the air tube so
as to allow any ink which may be in the air tube to return more freely through the
extension tube into the barrel or ink reservoir of the pen.
In order that my invention may be more fully understood I have illustrated the
same in three figures upon the accompanying sheet of drawings marked as far as
possible with like letters of reference to like parts throughout.
In Figure 1 which is a longitudinal section of my improved stylographic pen,
A is the larger air-vent opening. B is the chamber or air space. C is the barrel
or ink reservoir. D is the taper base of the chamber. E is the inner or air tube.
F is the smaller air vent opening. H is the taper end of the extension tube. J is
the air vent in the extension tube.
Figure 2 is an enlarged drawing of the extension tube. H is the taper end of
the extension tube. J is the air vent in the extension tube.
Figure 3 is the point cover of the pen.

page_text: 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 :-
1. The chamber or air space with taper shaped openings both at top and
bottom.
2. An outer.opening to admit air made larger at the outer end than at the inner
end.
3. An air tube extension made taper inside at the connecting end.
Dated this 19th day of May 1892.
GEORGE EDWARD SHAND.