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Патент USA US3040718

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June 26, 1962
A. E. SIMON, JR., ET AL
3,040,708
FOUNTAIN PENS
Filed May 28, 1958
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INVENTORS
,4L BERT E 5mm/v, a7:
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3,040,768
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Patented June 26» 1962,
l
2
3,040,708
in a particular manner in order to provide a capillary
space for the reception of ink from the bore of the tubu
FOUNTAlN PENS
Albert E. Simon, Jr., Gienside, and Richard J. Cavaliere,
Philadelphia, Pa., assignors to The Esterbrook Pen
Company, Camden, NJ., a corporation ‘of New ll'ersey
Filed May 28, 1958, Ser. No. 73S,406
3 Claims. (Cl. 1Z0-45.4)
lar cutting element, which ink covers substantially the
entire surface at the end of the writing assembly unit.
This surface of the body member has a rib or raised por
tion concentrically arranged and in relative contact with
the> surface `of the “Renew-Point” unit carrying the writ
ing assembly. Surrounding this annular rib or raised
This invention relates to fountain pens and to that
portion are sloping surfaces; inwardly and outwardly
type of such structures employing capsules or cartridges 10 thereof, and their presence provide the desired capillary
containing fluid ink.
space for the reception of ink. This conformation is of
In fountain pens of this type, the >barrel contains a
importance since, as the body member is relatively loosely
cartridge (or cartridges) lilled with ink which is to be
held in the section of the fountain pen, there is some
placed in communication with the writing assembly of
possibility of its canting slightly when the parts are aS
-the fountain pen whereby Writingcan be effected through 15 sembled. This canting, if present, will not affect the
use of the ink originally contained in such cartridge
(or cartridges). Initially .these cartridges comprise sealed
capillarity of the space which is, at all times of use dur
ing a writing operation, lil-led with ink. r[be cross slots
of the body member cut across or through its central bore
containers which may be made of any suitable material,
preferably and usually a plastic body more or less trans
and provide channels of capillary dimensions for the
_parent or translucent such as polyethylene or the like and 20 passage of ink and'air from and to such central bore;
they have sealed delivery ends which must be pierced ~
the ink channel being rather deep andnarrower than
or ruptured in order that the ink contained therein may
the air channel which is shallow and wider than the ink
flow therefrom. The sealed ends usually include an in
channel. The body member is of two ldiameters ex-`
tegral thin-walled web or diaphragm which is pierced by
ternally and the upper portion, ofless diameter, receives
suitable means; usually a tubular cutting element which, 25 a washer `or gasket lying between it and the wall iof the>
in addition, affords a conduit for the passage of ink from
section to insure that no ink from the space above re
the cartridge.
ferred to will pass such member.
Many attempts have been made to `develop `fountain
In >the present instance the improved ink feeding means
pens of this type with satisfactory piercing means for
have been shown in connection with a barrel containing
operation upon the cartridge closure; such means being 30 two cartridges arranged with their rear ends in abutting
disposed between the cartridge and the writing assembly
relation. It will be understood that a single cartridge
comprising the nib and feedebar whereby after proper
may be employed which will be of greater length longi
disposal of the cartridge within the fountain pen barrel
tudinally of the barrel.
and rupture of its closure, there will be ydelivery of ink
Theeend of the barrel is provided with Va sleeve, which
from the cartridge to .the nib and feed-bar, and pro 35 may be of metal, and may be frictionally held therein;
vision for the ingress of air to replace the ink consumed.
such sleeve having a projecting portion which is inter
The main object of the present invention is to em
nally and externally threaded; the internal threads re
ploy means, including what has come to be known as
ceiving the pen section and the external threads receiv
a “Renew-Point” unit, later described, in one form, that
ing the cap of the fountain pen. After the pen section
will place the writing assembly comprising the nib and
is removed, the cartridge (or cartridges) may be dropped
feed-bar of such “Renew-Point” unit in `communication 4, into the barrel and then, when the section carrying the
with the ink contained within the cartridge. |This “Renew
ink-feeding means with the tubular piercing element is
Poin ” unit has ‘been successfully employed with foun
screwed into place, the tubular piercing element pene-_
tain pens of usual type, that is to say, lthose having
trates the diaphragm of the cartridge and the contents
a sac -for the reception of an ink supply or those which 45 thereof are then free to ilow through the ink-feeding
utilize the barrel as the reservoir. But the arrangements
or constructions heretofore employed are not directly
available for use with iluid ink cartridges closed by a
n member and thence to the writing assembly. When tWO
, puncturable diaphragm which must be ruptured in order
by unscrewing the section fromthe connecting sleeve and
cartridges are kemployed and the forward cartridge has
¿dispensedkits ink contents, the parts may be separated
that the ink contents may ñow continuously and'unin 50 `the fresh cartridge may be set forward; the used cartridge
terruptedly to the writing assembly during a AWriting
being placed in the barrel‘behiud the same. Then, when
operation.
the section is screwed home, the tubular cutting element
For the purpose of insuring proper flow of inlcfrom4
will pierce the diaphragm and ink will flow' from the
the cartridge and ingress of air to replace the ink con
cart-ridge. When not in use, the _fountain pen should be
sumed, means have been provided that lie within the ~ » carried in the pocket with the point section in the upper
section of the fountain pen just behind the “Renew
Point” unit; such means carrying a tubular piercing ele
These and other features of the invention are more
position.
ment which, after lrupturing the cartridge :diaphragm
when the parts are assembled, will serve for the convey- ,
ance of ink through its bore. ,These means comprise a
body member carrying the tubular cutting element at
its' upper end and being disposed with its lower end in
~
`
f
Áfully described hereinafter; reference being had to the
accompanying drawings, more or less diagrammatic in
character, in which:
FIGURE lV is a longitudinal view of a _fountain pen; Í
a portion of the same being broken away to illustrate
relatively close engagement with the rear end of the
the features >of the present inventiorn'the section being ’
“Renew-Point” unit. This end of "the body mem-ber is
on the same plane as FIG. >2.
provided with what may be termed a cross feed; ycom 65
FIG. 2 is an enlarged sectional view of the parts con
prising slots of proper dimensions providing capillary
stituting the subject kof the present invention and which
channels for the passage of ink and air.
lie between the “Renew~Point” unit and the cartridge;
rllhe terms “upper” and “lower” as used above are
the section being on the line II-II, FIG. 3.
.
purely relative and indicate the position of the feed mem
FIG, 3 is a cross sectional view ori-the line III-III,
ber when the fountain pen is being used in a writing
’
'
70 FIG. 2.
operation, as illustrated in FIGS. l and 2.
FIG.
4
is
a
cross
sectional
view
on
theline
IV-VIV,The lower end of the Ibody member is faced or shaped
FIG. 2, and
Y
3,040,708
4
Y
,
3
.
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,
Y
passage of Vink to the lower end of the same and for the
FIG. 5 is an exploded perspective view of the parts
ingress of air as the ink is consumed.
forming the subject of the present invention.
_
In the drawings, the barrel of the fountain pen is 1n
Y
The rod 24, disposed within the bore of the tubular
cutting element 23, has a relatively close fit therewith at
dicated at 10V and receives at its forward end >a tubularV
extension 11, which may be of metal and may be fric
its upper end, such tubular cutting element being disposed
in the axial bore of the body member 20 and terminating
`tionally _held in tight engagement with the barrel, Such
near the upper end of such bore.
. extension projecting forwardly of «the Ibarrel and being
_threaded internally at 11F', and externally at 11b. Dis
Below this point an
annular space 2Gb is provided between the wall of the
bore and the rod 24, and such space is of capillary size
posed in engagement with the internal Vthreads 11a of
the extension 11, is the section 12 of the fountain pen 10 «and will draw Vink from the capillary space provided by
the fiat side of the rod 24 and the inner wall of the cutting
which receives atvits outer end the writing assembly com
element and the bore of the body member 20. l Since a
prising a nib 13 and a feed-bar 14; the latter having inlr
channels 14”' -and an air Vchannel 14h, and such parts Y complete ring of ink is provided by this annulary space,
ink will be delivered to the adjacent cross feed slots (here
lbe'ingfixedly mounted in a sleeve 15. This sleeve, with
the contained nib and feed-bar, constitutes the “Renew 15 inafter referred to) regardless of the actual orientation
Poin ” unit which is in threaded engagement, asV indi
of the two parts.
.
The complete ring of ink in the annular space 2Gb above
cated at 12a, with the outer end of the section 12. In
the usual arrangement, in the mounting yof such “Renew
_ referred to will cut olf the iiow of ink to the longitudinal
space 24C adjacent to the air slot of the rod 24. Thus a
such as 15, abuts a seat-preferably 'beveled-«within the 20 hydrostatic lock is formed which prevents siphoning.
section V12, and the same arrangement is found in the
When Vink is drawn from the pen during a writing opera
present assembly of the parts; the beveled seat being in
tion, it is Vfu'st drawn from the longitudinal space 24“
dicated at 12b. The external threads 11b of the exten
Y adjacent to the air slot of the rod 24 (since it has the
sion 11 receives the cap of the fountain pen.
least capillary strength) and intermittent air bubbles are Y
In the presentinstance, the barrel of the fountain pen 25 permitted to enter the cartridge.
is designed to receive two cartridges containing iluid ink
'I'he lower end of the body member 20, which lies in a
V Point” unit in a fountain pen,> the rear end of thersleeve,
substantially single plane at right angles to its longitudinal
with their rear ends in abutting'relation and their- di- '
mension is such as to permit ready insertion and re
axis, is cross slotted as indicated at 26 and 27 for the
moval. In the present instance, the forward cartridge ' passage of ink and air from and to its bore. The slot 26
is shown partly in section in FIGS. 1 and 2. These V30 is deeper than the slot 27,l but narrower and forms a
cartridges may _fbe made of any suitable plastic, which
capillary channel for the passage of ink from the space
may be transparent or translucent; preferably of poly
26h, while the slot 27 is wider than slot 26 and forms a
ethylene, and they are more or less resilient so as to be
capillary channel for the passage of air as the ink is con
retained in proper relation within the .barrel of the foun- ’
sumed. The extreme lower end of the member 20 is
35 formed with an annular projection 25 with sloping faces
tain pen.
`
The forward end of the cartridge indicated at 16 and
25a and 25h, inwardly and outwardly thereof and con
shown in FIGURES l and 2 in the Vlower position, is
centrically disposed with respect to the outer contour of
provided with a recess 16a which may function as a bore;
Y said member. This annular projection of the body mem
having an outwardly flaring or tapered mouth, the inner
ber 2i) lies in contact with the inner end of the feed-bar
end, of such recess Itïtl being closed by a thin-walled 40 of the “Renew-Point” unit, and the spaces provided by the
puncturable web or diaphragm 16b which, when pierced
sloping faces 25a and 25b will lill with ink and insure
or ruptured, permits the ink to flow from such cartridge.
passage thereof to the ink and air channels of the feed
Y The cartridgenot in use lies with its puncturable end in
bar. It will be noted that ,by virtue of said sloping faces,
contact withthe inner rear wall of the barrel; the rear
the “spaces defined thereby have varying degrees of
ends of such cartridges lying in abutting relation. Y
45 capillarity.”
Between the inner end of the feed-bar 14 carried by
When a cartridge is in position, insertion of the V“Renew» the sleeve 15 of the “Renew-Point” unit and the diaphragm
Point” unit and complete seating of the same against the
end of the cartridge 16, the cooperative> means -providing
seat 12b will press against the body member, imparting
for proper feed of Vink from the cartridge to the writing
slight movement to the same longitudinally within the sec
.assembly and forming Ithe subject vof this invention is
tion and will cause the tubular cutting element to rupture
the diaphragm and place its bore in communication with
mounted.
Y
_
Y
V
Y The cooperative ink-feeding means include aV body
the body of ink` within the cartridge; the displaced por
member 20, more _or less loosely mounted for axial shift
tion of kthe diaphragm being pushed to one side as the
rupture is completed, as vindicated in FIGS. l and 2.
ing movement during its assembly in the section 12 be
hind the ’Renew-Point”l unit, 'and'its upper portion, in 55 Following 4assembly las, aforesaid, the body member 20 is
dicated at 20a, is of less diameter than the main body. In
biased> into effective engagement with the inner end of
the space between the outer surface of such upper .reduced
the feed-bar 1'5 by the tendency of the cartridge to ex
portion and the inner Wall of the section 12, an elastic
pand axially.
gasket or washerY 21 is disposed to prevent leakage of ink
In operation, after the diaphragm has been ruptured,
around the body member 20. To provide an abutment 60 ink will ilowfrom the cartridge to Ithe bore of the body
-for engagement by the> diaphragmV end` of the cartridge,
member vand the cross-slot 26 and thence to one of the
the reduced end portion 20@- of kthe body member may
capillary channels of the feed-bar, while air will enter
carry a disc 22, which may be of any suitable stiff ma
4 the other channel Vand pass via theV cross-slot 27 and the
'air passage in the bore of »the tubular cutting element;
The body member is axially bored, and such bore is 65 entering the cartridge to replace the ink ñowing there
terial; preferably-metal.V
>
>
-
.
'_
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"of two diameters. The upper and` larger bore Vportion
receives »a tubular cutting element 23,V frictionally and
tightly held therein, such cutting element having a tapered
' or »beveled cutting edge portion-23a.
'
`Within the bore of the cutting element 23 a rod 24,> 70
Vgrooved at 24a throughout its length and cut away at one
side as Aindicated Aat 24h, is mounted, such construction
providing a longitudinal space 24° adjacent to theV inner
wallof vthe-bore of the tubular cutting element 23, and
such groove and space provide capillary channels for the'
from.
`
'
" FIG. l shows the fountain pen in the position of use,
and `in the operation of Writing, the ink and `air will flow
simultaneously in opposite directions.
l
It may be desirable, at times, to removeY the body
member and wash the same in water; thereby removing
anydsediment'that may collect from the ink that has been
use
.
'
'
’
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i
While certain features of this invention> are shown in
the drawings and described in the Aspeciíication with’some
3,040,708
5
degree of speciñc construction; such illustration and de
scription are for illustrative purposes only and not as
limiting the invention in any manner since modification
and changes may be made within the spirit thereof; all
of which is deemed to be within the scope of the appended
claims.
We claim:
'
'
l. In a fountain pen, the combination of la barrel, a
6
for limited axial shifting movement Within the barrel dur
ing assembly of said parts and being biased into engage
ment with the feed bar by said cartridge; said ink-feeding
assembly comprising a body member having a through
bore in axial alignment with the cartridge, a tubular cut
ting element mounted in the bore of said body member
and adapted to pierce the diaphragm of the cartridgey when
the parts are assembled, and provision Within the bore of
writing assembly comprising a nib, a feed-bar having
said cutting element for the passage of ink and air.
channels for the passage of ink and air and a sleeve in 10
3. In a fountain pen, the combination of a barrel, a
which said nib and feed-bar are permanently mounted
writing assembly comprising a nib, a feed-bar having
to function as a unit detachably mounted in the end of
channels for the passage of ink and air and a sleeve in
the barrel, an 'ink-containing cartridge having a ruptturable
which said nib and feed-bar are permanently mounted t0
diaphragm sealing one end and disposed in the barrel
function as a unit detachably mounted in the end ofthe
opposite the writing assembly unit, and an ink-feeding 15 barrel, an ink-containing cartridge having a rupturable
assembly interposed between the writing assembly unit
diaphragm sealing one end and disposed in the barrel
and the delivery end of the cartridge; said ink-feeding as
opposite the writing assembly unit, and an ink-feeding
sembly comprising a body member having »a through
assembly interposed between the writing assembly and
bore in axial alignment with the cartridge, a tubular cut
the delivery end of the cartridge; said ink-feeding assem
tinD element carried by and disposed in the bore of said 20 bly comprising a body member having a through bore
body member and adapted to pierce the diaphragm of the
in axial alignment with the cartridge, a tubular cutting
cartridge when the parts are assembled, means arranged
element carried by Vand' disposed in the bore of said body
within the bore of said cutting element defining capillary
member and adapted `to pierce the diaphragm of the car
channels for the passage of ink and air; the end of said
tridge when the parts are assembled, means arranged
body member being provided with an annular ridge hav 25 within the bore of said cutting element defining capillary
ing portions sloping inwardly and outwardly to define ink
channels for the passage of ink and air; the end of said
receiving spaces between the body member and the writ
member being provided with an annular ridge to contact
ing assembly unit and having at such end slots of capillary
the Writing assembly and provide ink receiving spaces
dimensions defining ink and air channels; said channels
there-between of varying degrees of capillarity in com
providing communication between the ink and air chan~ 30 munication with the ink and air channels of the feed-bar ‘
nels of the cutting element and the space in communica
and having end slots of capillary dimensions also deiining
tion with the ink and air channels of the feed~bar of the
ink and air channels; such last-named channels providing
writing assembly.
communication between the ink and air channels of the
2. In a fountain pen, the combination of a barrel, a
cutting element and said spaces and thereby with the ink
section mounted at the forward end of said barrel, `a Writ~ 35 and air channelsof the feed-bar of the writing assembly.
ing assembly comprising a nib, a feed-bar having chan
nels for the passage of ink and air and a sleeve in which
said nib and feed-bar are permanently mounted to func~
tion as a unit detachably mounted in the end of said sec
>References Cited in the tile of this patent
UNITED STATES PATENTS
tion, an ink-containing cartridge having a rupturable dia 40
phragm sealing one end and disposed in the barrel oppo
site the writing assembly, land an ink-feeding assembly
operatively interposed between and engaged with the
2,802,448
2,881,737
cartridge and the writing assembly and mounted therein
1,073,346
Young ______________ __ Aug. 13, 1957
Young ______________ __ Apr. 14, 1959
FOREIGN PATENTS
France ___________ __»__'_ Mar. 24, 1954
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