An Improved Fountain Pen, an Ink-making Cartridge, and Means for Adjusting same in the Pen Barrel.
Year: 1898

page_text: Date of Application, 9th Aug., 1898-Accepted, 10th Dec., 1898
COMPLETE SPECIFICATION.
An Improved Fountain Pen, an Ink-making Cartridge, and Means for
Adjusting same in the Pen Barrel.
JOHN BLAIR, Manufacturer, of No. 52, Nassau Street, New York City, United
States of America, 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 comprises 1st a novel construction of the pen section; 2nd a new
soluble ink charge or cartridge and 3rd, a writing outfit embracing the improved
pen, the ink cartridge and means for adjusting the latter in the pen barrel.
This invention comprises 1st, a novel construction of the pen section: 2nd, a new
soluble ink charge or cartridge, and 3rd, a writing.outfit embracing the improved
pen, the ink cartridge and means for adjusting the latter in the pen barrel.
The accompanying drawing illustrates the invention in which Figure 1," is
a longitudinal view of the pen with portions of the barrel in section. Figure "2"
is a side elevation of a cartridge partly in section, Figure "3," is a plan of the
sponge disk, and Figure 4," is a side view of the adjusting rod.
The letter A indicates the body or barrel of my fountain pen having a cap
seat a, and an interior thread a, at its front or open end. "B," denotes the pen
section whose body slightly tapers towards the rear. At its front end is a
peripherally milled flange or knurl," C," having the same circumferential measure
as the cap seat "A," a short thread, "D" is formed on the pen section to engage
the barrel thread a and an annular groove d is cut between thread "D" and the
knurl.
In fountain pens heretofore constructed with a flange on the pen section the
cap has been adapted to fit upon the pen section and to stop against the flange leav-
ing the joint between the pen section and the thread exposed.
In my pen the cap entirely covers this joint affording additional protection
against ink leakage and greatly strengthening this the most fragile portion of
the pen. The short thread "D" is sufficient to retain the pen section in the barrel
and the air filled groove or chamber d acts as a barricade against an outflow of
ink upon the fingers. The limited thread area also prevents a rigid adhesion of
the parts when the ink becomes dry to separate which when held by a long thread
not infrequently breaks one part or the other.
The ink cartridge has a porous flexible casing "f" made in the form of an
elongated bag and filled with a dry soluble ink powder "G." This solidified ink
is of various colors and qualities and in filling the cartridge with a grade which
dissolves very freely I adjust upon the powder at the end of the cartridge first in
contact with the fluid a piece or disk of sponge "H" or an equivalent to retard
the action of the fluid in dissolving the powder.
A cord or thread "i" is attached to each cartridge by means of which the empty
case is with drawn from the barrel.
The adjusting rod "L," is applied to push the cartridge down into place at the
bottom of the pen barrel. When the cartridge is in position the barrel is filled

page_text: with water (preferably soft) which soon dissolves a portion of the powder and
becomes ink. The pen section is also put on and the pen is ready for use.
After using out the fluid water is added again and so continued until the powder
18 all dissolved when the empty cartridge is withdrawn and a full one is inserted.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. In a fountain pen, a pen section having a peripherally milled annular flange,
a short thread and an annular groove between them.
2. An ink cartridge having a porous flexible casing as discribed.
3. An ink cartridge having a porous flexible casing and a sponge disk inter-
posed between the ink powder and the fluid.
4. An ink cartridge having a porous flexible casing and a with drawal cord as
herein set forth.
5. A writing outfit comprising a fountain pen having the herein described pen
section and ink cartridge, and a cartridge adjusting rod for the purpose described.
6. A screw pen section having the thread at its outer end and a rearwardly pro-
jecting body as described.
7. A fountain pen with the joint at the extreme front end of the barrel for the
purpose specified.
8. A. screw pen section to fit into a barrel having a thread whose points engage
the now threaded body of the pen section for the purpose specified.
9. A pen section having a knurl of the same diameter as the cap seat and a
cap adapted to cover the knurl and joint as described.
Dated this Ninth day of August A.D. 1898.