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Патент USA US2124280

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July 19, v1938.
Filed Feb. 4, 1937
Patented July- 19, 1938
l y’_falzza‘zsevv
j-inpplication rebiruary‘ei, 1937, senaIßNo. 1233951 f.,
" `
` _4 Claims.’
" " ` My invention ‘relates to ' fountain pens.
The'object‘of my invention isto'provideA apen
" ‘construction’ of the self-ñlling> type that will ‘op
erate*very'ïfreely'in'the act ofj i‘ìllingtheA reservoir
ë `5 Íwíth‘ink.
` ‘ A further object is'tofprovide apen‘that will
(o1. l12h-Q47)
I 8A one endA of whichf extends intolthe centralbore
I9’ formed in the piston I9 to ¿Strengthen the
`~piston'-rod atthispoint.
v ¿Thepiston I9 is mounted onthevpiston-rod in
v3iixe'dírelatibn; and-.iis'fpro'vide‘d with »one or more~‘5
"longitudinally, extending I passages » 20,- an‘dl with
hold alarge volurne‘of'ink, ~and ‘having means "one'or more passages~2l which extend from the
whereby a feed-chamber is provided which'holds Nrear sidef23 of the'piston andftherethru‘to a
'a quantity ofink such'` as can‘be controlled bythe passage `-22 »leading through the tube »passage C24
. 1V 10 ‘feed-plug, `and a further quantity of ink that can
.'be controlled by the piston whichserves'to 'sep
-1 ~
ï -'
- > ‘ 2‘5 indicates a valvewhich- infFig. 1, >consists of
E»"arate'A the feed-chamber portion y:of _the ' reservoir faf‘thìn-ñexible disc of> soft rubberuwhich‘isheld
Ífìrovm, y‘the storage portion, ‘pand which' , may be »on‘the tube I6 byaringhzû ñxed-thereom-and
Jl*easily foperated toitransfer ink from the main "the diameter of the valve'is¿.lessv than that ofthe
¿1,5 »reservoir portion ofithe >chamber to the 4feed por
pistonto permit inl; to'Y ñowthru the piston pas- ¿1;5
‘ Y
` - >A'furth'er'object is to" provide apen, the barrel
j of 'whichfmay beA made vofitransparent o_r‘trans
flllucent >material `to permit-the'ink therein tojbe
LsagesfZIìand over. the outer edgefof the valve when
it is -open-,Y/ïintokthe .feed-chamber '21- ¿from the
reservoir chamber 28.
v f T'In Fig. i4; thepiStOn-isthesame in construction
t «i120"viewedjnand"the‘interior of" which'isikept clear Las# that shown infFigure-l; but the'valve isa thin L20 Y
_'-by ,the _wiping action ' of _ithe'jpiston *therein 'both ï-,dí’sc of hard rubber -fäfitted lï-toslide on "the tube
in“ thefiillin‘gjope/ration;v orA by using kwater .for
«I6 Yandipresse'd‘ against the'ßface of the piston by
«alightjspring pressure caused by a helical spring.
Further Vobjects `of'my invention and detailsr of v¿<29 Awhich rests against the‘fdiscv at rone end Aand
¿25 -construction will now be'described.
against a ring 30 mounted on the tube, at >`its :_¿25
Referring to the drawingwhichforrns ra part ~other Aenolgfî theivalve'slbeing :normally Aclosed. =
¿the purpose;l
*of‘ this
' ,
Í ` i3 I <indicates. .theV `>’casing'l' of LaV vstu?lingbox» andë3 I '
Fig. 1 is a‘longitudinal sectional View of a pen l the-upackingimaterialíthereinlwhichß-may be _rela
; embodying ‘ my invention, the ‘ valve "being shown
.êtivelyfìa largeiniass Ito ¿an? elasticï resilient
V30' *in its closed position in?
¿cushion »which closely ïñtsr the âwallzfóf the> sliding i¿30
2 "in `which the ' Valver and piston is >'shown :vpistonèrodtbi maintain a fluidè-tight joint without ’ `
*Fig‘ 3 Ais an
~ end-View
‘ ' ` of
"' 'the pist<_m,'takenl
¿line-343 of VFigure 1;. ”
¿excessive friction, l'and thel-rodfb'e'ing I"ef small
VLdiame'ter-lmay- be ,moved fwithïla minimum'Í ‘ofV fric
- Theinthe
his-*provided fwith
’ f -ßa'f thread 1321 to ¿_ 35
‘Figuren-is a longitudinal sectional View of a .Ltion
f I'I, .and
'Amodiñed‘construction' ofthe pistonavalve.
` AAII) indicates the barrelv of the pen vwhich may 'the length 'of-Athis' threadkisllessf.thanlthat> of'ïthe
be'made ofltransparent or translucent material, ïdistance between the Y.passage r I5? » and the Aadja
and II is the pen-section which is ñtted in fluid jcentend'îof'the tubeJ IB', -:so thatas long as the
‘ „40 'tight' relation-with the *end of thebarrel at I2.
1 threadsìr32ïï eng-angei thelen’dß33 of~i the handle;VA the ¿hm
I3f._indicates ,the feed-plugjand ‘I4 >the pen `passage 5f» «willi beÈclósedf-byftlfieïend of~ the~`tube ,
I5 indicates a central bore which extends from
theinner end of the plug;r to‘near its front end,
45 and is intersected by a passage I5’ klocated a
predetermined distance from the end of the bore
and having a smaller diameter than that of the
50` hard rubber such as used for air-tubes in types
of self-filling pens; said’tube extending `from the
inner closed endof the bore and into the handle
I'I of the piston-rod’portion I6' of which said
~ ‘l
" '2
-' f
‘5?"The---pisto'n Aandf~va1ve"~`may be ¿located at‘any
desired point on the piston-rod, depending on the
relative size of the chambers desired.
.The piston may be made of hard rubber and
Will slide in easy frictional relation with the wall
of the barrel, the ink serving as a lubricant, and
I6 indicates a small tubapreferably made of
tube forms a part.
"f'overlyi‘ng it;
The tube portion I6’ is provided with a stiff rod
the reservoir will iill completely with two inward
strokes of the piston after the front end of the 50»V
pen-section has been immersed in ink.
When ink has been used from the feed-chamber
and it is desired to add ink >thereto from the
reservoir chamber 28, the handle I‘I is unsorewed
nearly the length of the thread 32, which causes l 55
2,124,280 ‘
' 2
ink to force the valve V25 to open and flow into
the feed-chamber 21, and this action may be re
peated until the desired amount of ink is trans
It will be noted that the end of the tube I6
has kept the passage I5’ covered during this
operation so» that ink is not forced from the
chamber 28 thru the tube during the outward
stroke of the piston.
In filling the chambers with ink from a bottle,
the outward stroke of the piston causes the fluid
Y in chamber 28 to pass thru the tube I6 into the
ment of said piston-rod whereby the valve may
be operatedto force ink thru the passage in said
piston from one'side thereof to the opposite side
without opening the passage leading 'thru the
tube to the atmosphere.
3. A fountain pen comprising a barrel having
a uniform cylindrical bore forming the reservoir
therein, a feed-plug having a duct for ink, a
pen overlying said duct; said feed-plug having
a central bore extending from its rear end nearly l()
to theforward end thereof anda passage for
ink leading from'the atmosphere to said bore
and located a predetermined distance from the
bottle, and thru the passages 20 into the feed
end of the bore, a tube ñtted to slide in
chamber, and on the inward strokes of the piston,
the valve 25 closes and ink is drawn from the close contact with the wall of the bore and over
bottle thru the tube I6 and fills the chamber 28 lying the said passageV for ink and extending from
the bore into the reservoir, a piston carried by
as fast as the piston travels; and on the second
outward stroke of the piston, the ink flows more p. said tube, a piston-rod extending thru the rear
end of said barrel, a`piston actuated thereby hav
freely from the chamber 28 into the feed-cham
a' passage leading therethru in open commu 20
ber than it does thru the tube I6, so that _two
or three strokes in each direction completely fills
both chambers.
This construction provides positive meansfor
forcing the ink from the main reservoir to the
»feed chamber, and for trapping the- ink in the
main reservoir; therefore the feed-plug can con
trol the flow of ink in the feed-chamber without
danger of flooding, even tho the pen as a Whole
is filled with much more ink _than the feed
plug could control, Were the main reservoir not
closed and a large part of the ink‘had _been
removed therefrom, causing air to Vreplace the
ink used, which destroys the partial vacuum
above the ink and permits the ink to flow from
the reservoir, as will be4 readilyv understood.
In the present construction, the ink-duct 34
in the feed-plug is entirely separated from the
The cap 35 is threaded in engagement with
the pen-section I3 at 36 instead of on the-end
of the barrel I0, which permits a smooth gripping
surface on the barrel when the pen-section is
made rather short', as will be readily understood.
Having thus described my invention I claim vas
nication with said tube and-also having a pas
sage leading frorn o'neside'théreof to the oppo
side side, a disc serving as a valve for said'last
named passage; said piston being located be
tween the ends of said barrel to form'two cham
bers in said barrel; the constructionbeing such
that the outward strokeof the piston opens said
ì 4. A fountain pen comprising a barrel, apen
section'ca'rried in one end of said barrel, a feed
plug in said section having a feed-duct and af
central bore separated therefrom and leading to
the atmosphere thru a small passage located vat
a predetermined distance from the inner end of
the bore, a' tube> fitted in said duct and extending
into the barrel, a piston directly connectedV to
said tube, a piston-rod extending from the piston
thru the rear end of the barrel, a stuiìi'ng-boxv for
the piston-rod comprising Va casing, said casing
having a threaded end,lav >handle, carried by the
piston-rod having a thread toy engage the. thread
in casing and of less Vlength thanthe length of
ythe tube portion which extends beyond the small
passage in the outer end of the feed-plug; said
piston having a passage leading therethru to its
opposite side and a passage leading to said tube,
a valve carried by the piston-rod adapted to close
said passage leading thruthe piston on the in
ward stroke thereof land open‘on the outward
stroke,` said valve being normally closed; said
piston beinglocated between the `opposite ends
of the barrel to provide two chambers normally
1. A fountain pen comprising a barrel, a feed
plug carried at one end thereof and provided
with a central cylindrical bore which extends
from its inner end to near'its- front end and
having a passage leading fromV the vatmosphere
to said bore located at a predetermined distance
from the closed end of said bore, a tube fitted
to slide in close sliding relation in said bore, a separated from each other but in open commu
connecting rod extending from the tube thru nication during the outward stroke of the piston:
the rear end of said barrel, a piston movable by the construction being such that the piston may 56
55 said connecting-rod and having a passage ex
move in its outward direction a limited distance
tending therethru, a valve controlling said pas .without opening >the passage leading thru the
sage, means for leading a liquid from the rear
side of said piston thru said tube -to the atmos
phere, means for closing the rear end of said
barrel, and a handle connected to said piston-rod.
2. The construction defined in claim l, together
with; and means for imparting a limited move
tube to the-atmosphere, and simultaneously caus
ing the valve to open to permit a fluid in one
chamber to pass a quantity therefrom to the 60
>opposite chamber. . »
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