Improvements in Stylographio and other Pens.
Year: 1898

page_text: Date of Application, 30th Dec., 1898
Complete Specification Left, 29th Sept., 1899-Accepted, 4th Nov., 1899
Improvements in Stylographio and other Pens.
1, WILLIAM THOMAS SHAW, of Thomas De La Rue & Co Ld, of 110, Bunhill
Row, in the City of London, Manufacturers, do hereby declare the nature of this
invention to be as follows.
-
In my improved construction I form a diaphragm at a short distance fiom
the upper end of the tube forming the reservon, thus dividing that tube into two
unequal portions The longer portion below the diaphragm forms the reservoi
and is terminated by the point section screwed in in the usual manner The
diaphragm has a central hole through it canying the an tube which is sciewed
into it and forms there a watertight joint The diaphragm on the side next to
the upper end of the resei von 18 conical, the concavity facing that end of the
lesel von The latter is tapped for the reception of a sciewed plug, upon the
mne end of which is toimed a conical projection approximately parallel with the
concave surface of the diaphragm When the plug is screwed home a small
interval separates the two surfaces, thus forming a tiap for the reception of any
ink which may escape down the air tube The plug is pierced by a small circular
channel for the admission of an. The form of the plug and an chamber at the
upper end of the reservou may be varied
Fixed into the plug, near the channel in question, 18 a fine wire about two
inches in length, which when the plug 18 screwed home passes into the air tube,
which forms a suitable and safe receptacle for it when the stylograph 16 in use
When, however, the nozzle at the point requires to be cleared of any ink deposit
or other obstruction to the fiee flowing of the ink, the plug is unscrewed, and
the pen section having been removed from the reservoir, the wine, inserted from
the back, is used to clear out the end of the nozzle. This 18 ordinarily done by a
detached wire cleaner, but the great convenience of always having a cleane
contained in the stylograph will be sufficiently obvious
The above construction is also applicable to resen von pen holders which carry
an ordinary nibbed pen instead of the stylograph point refered to above, in
which case, of course, the upper plug no longer carries a cleaning we
The
pen can be of the ordinary kind as described in my Letters Patent No 25764 of
1897, or it may be cylindrical in shape as described in my Letters Patent No
6398 of 1891

page_text: invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement.—
In my improved construction I form a diaphragm a Figures 1 and 2 at a shoit
distance from the upper end of the tube b forming the reservo, thus dividing
that tube into two unequal portions The longer portion below the diaphragm.
forms the iesei voir and 18 terminated by the point section screwed in in the
usual manner The diaphragm a has a cential hole through it canying the
air tube which is screwed into it and forms there a watertight joint The
diaphragm a on the side next to the upper end of the resei von 1s conical, the
concavity facing that end of the reservoi The latter is tapped for the reception
of a screwed plug e, upon the inner end of which is formed a conical projection
approximately parallel with the concave surface of the diaphragm as shown in
iguie 1
When the plug e 18 screwed home a small interval separates the
two sui faces, thus forming a tiap for the reception of any ink which may escape
down the an tube The plug is priced by a small encula channel for the
admission of all The form of the plug and air chamber at the upper end of
the reservou may be varied see for example Figure 2
Fixed into the plug, near the channel in question, is a fine wite y about two
inches in length, which when the plug is screwed home passes into the ai
tube, which forms a suitable and safe receptacle for it when the stylograph 18 in
18Ր When, however, the nozzle at the point reques to be cleared of any ink
deposit or other obstruction to the free flowing of the ink, the plug e 18 unscrewed,
and the pen section chaving been removed from the reservoir, the wie g
inserted from the back, is used to clear out the end of the nozzle
This 18
ordinarily done by a detached we cleaner, but the great convenience of always
having a cleaner contained in the stylograph will be sufficiently obvious
The
The above construction is also applicable to servou pen holders which carry
an ordinary nibbed pen instead of the stylograph point referred to above, in
which case, of course, the upper plug no longer carries a cleaning we
pen can be of the ordinary kind as described in my Letters Patent No 25764
of 1897, or it may be cylindrical in shape as described in my Letters Patent
No. 6398 of 1891
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 18 —
1 The combination of the diaphragm an tube and plug substantially as
described.
2 The combination of the plug and wire substantially as described
3 Stylographie and other pens substantially as described and illustrated in
the drawings
Dated this 23rd day of September 1899.