US2223487A - Fountain pen - Google Patents

Fountain pen Download PDF


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US2223487A US297581A US29758139A US2223487A US 2223487 A US2223487 A US 2223487A US 297581 A US297581 A US 297581A US 29758139 A US29758139 A US 29758139A US 2223487 A US2223487 A US 2223487A
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Floro Martiniano
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Floro Martiniano
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    • B43K5/00Pens with ink reservoirs in holders, e.g. fountain-pens
    • B43K5/02Ink reservoirs
    • B43K5/06Ink reservoirs with movable pistons for withdrawing ink from an ink-receptacle


Dec. 3, 1940.
M. FLoRo FOUNTAIN PEN Filed Oct. 2, 1939 ATTORNEYS Patented Dec. 3, 1940 l UNITED PATENT f loFFlcr.
` "EUNTAINPEN Y y v Martiniano Floro, Manila, P. I.
@imitation october 2, 1939, serial No'. 297,581 claim. (ci. 12o-47) free'ilow of ink in the usev of the pen and on the charging of the latter with ink a complete quick filling can be had.
, o Another object of the invention is theprovision of a pen of .this character,` wherein valves or other cut-offs are dispensed with for control of ink flow, the ink being storedin a chamber built l within the Ibarrel or cylinderof the pen'and in this fashion relieving the latter of a collapsible sack or rubber bag which deteriorates from age and the action of ink thereon'.
A further object ofthe. invention isftheprovision of a pen ofv this character, .wherein rubber parts are entirely dispensed with and the pen points can be automatically cleaned without requiring the removal of said point or its feeder part in association therewith.
A further object of the invention is the provision of a pen of this character, wherein a piston on reverse strokes thereof draws ink into the pen and forces the ink under pressure into a storage chamber for the feeding of such ink to the point in the use of the pen.
A still further object of the invention is the provision of a pen of this character, which is simple in its construction, thoroughly reliable and ehicient in operation, assured of a maximum capacity of ink and will accomplish the filling operation rapidly and also 'will give further satisfactory service, being simple in construction and` inexpensive to manufacture.
With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described in detail, illustrated in the accompanying drawing, which discloses the preferred embodiment of the invention and pointed out in the claim hereunto 5 appended.
In the accompanying drawing:
Figure l is a vertical longitudinal sectional View through a pen constructed in accordance with the invention. i
Figure 2 is an enlarged fragmentary vertical longitudinal sectional View through the cap end of the pen.
Figure 4 is a sectional view taken on the line sectional view through the point end of the pen.
Figure 3 is a fragmentary vertical longitudinal 4--5 of Figure 2 looking in the direction of the Figure 5 is a sectional View taken on the line 5-5 of Figure l looking in the direction of the arrows. f 5
Figure 6 is a sectional view taken on the line (ie-6 o-f Figure 3 looking in the direction of the Similar reference characters indicate corresponding parts throughout the several views inl 10 the drawing.
Referring to the drawing in detail, A designates generally the fountain pen constructed in accordance with the invention and comprises a cylindrical body I0 of uniform cross sectional size 15 and constituting the barrel or casing for the pen. This body Ill has opposite open ends internally threaded, one beingy detachably engaged by a sleeve-like feed cap II while the other end accommodates therein a removable closure cap I2. 20 The feed cap I i has tted therein a feeder member I3 and a pen point I4, respectively, the cap II being provided with a suitable clearance for snugly accommodating both the feeder member and the point. The body I IJ creates interiorly 25 thereof between the caps II and I2 an ink chamber I5 `and operating in this chamber is a pull and push piston I5, its operating stem I'I plays snugly through a center clearance therefor in the cap I2 and has fixed thereto at its outer end an 30 operating knob or grip I8 which -constitutes an inverted cup-shaped cover piece separably engageable over the cap I2, the engagement being had through screw threads I9 therebetween. 'The piston I6 is adapted to be reciprocated within the 35 chamber I5 in the filling of the pen A.
Formed longitudinally in the wall of the body I0 at diametrically opposite points thereof are bypasses or diverting passages 20, these at opposite endsthrough the ports 2I and ducts 22 com- 40 municate with the chamber I5 through the body Il) and the cap II through the reduced inner end 23 thereof With the feed Ways or conduits 24' provided in the feeder member I3 for the discharge of air from within the chamber I5 through 45 these conduits 24 to without the pen. The feeder member I3 longitudinally thereof intermediate with respect to the conduits 24 has provided therein an inlet conduit 25 which opens through the outer end of said feeder member and also 50 through the inner end thereof into the chamber p I5. Ink is drawn in through this conduit 25 to within the chamber I5 next to the piston I 5 at the side thereof confronting the cap II on the outstroke of said piston. The air .at the other 55 side of the piston Within the chamber I5 is expelled through the passages or by-passes and the conduit 24 in the feeder member I3 to without the body I0. 'Ihe body I0 concentrically of the reduced end 23 of the cap II has feeder channels 26 in the inner face thereof, these allowing ink within the chamber I5 above the piston I6 to gravitate past the said piston and be delivered through the feeder conduit to the pen point I4 when the piston I6 is forced fully inwardly of the chamber I5 ofthe body I0.
When the piston I6 is moved inwardly of the ber I5 rearwardly of said piston I6.
To fill the pen the cap II with the point I4 and feeder therein is dipped into a bottle' of ink.
Now -on unscrewing the grip I8 from .the cap I2 an operator can pull the piston upward and ink from the bottle will ow into the chamber I5 below the piston I6 through the conduit 25. On account of the vacuum created by the displacement of the piston I6 the air in the chamber I5 will pass out through the ports 2I, by-passes 2D, ducts 22 and conduits 24 until the piston is in its uppermost or outermost position. A partial outermost stroke of the piston is indicated by dotted lines in Figure 1 of the drawing. By pushing the piston downwardly in the chamber I5 ink accumulated under the piston I6 will pass out with pressure through the conduit 25 and the chamber I5 above the piston will have created therein a vacuum due to the downward stroke of the said pist-on thus the ink within a bottle will flow or rush through the conduit 24, ducts 22, by-passes 20,-ports 2| into the chamber I5 resulting in lling the fountain pen with ink equal to the Volume of air displaced in the upward motion of the lsaid piston. By repeating the push-pull operation of the piston I6 more than once has the advantage of cleaning the ducts and passages of the fountain pen as the liquid has to flow therethrough under pressure.
In writing with the pen ink in the chamber I5 will freely flow through the channels 26 from above the piston I6 and be delivered to the pen point through the conduit 25.
It is preferable to have the external surface of -the body .IIly of -octagonal-formation for convenience j'invf the handlingjof the :pen for writing purposes. y
What is claimed is: Y
A ypen of the kind described c-omprising a b arrel provided with a chamber and intake passages, respectively, the intake passages being disposed diametrically opposite each other and lead communicate with the chamber at the said other end ofthe said barrel, a feeder member releasably fitting .the barrel and having passages opening directlyinto the chamber and .into the said intake passages, respectively, a removable closure c'aptting said'barrel at the end opposite the feedermember and. having a portion projected outwardly from the barrel, a pen pointl adjacent to said feederlmember.y and cooperating therewith; a piston .operating within the chamber and having a stemslidably fitting the closure cap,.
a cap on said stem and removably engaged with the closure cap at the portion extended beyond the barrel and having a recess for accommodatcommodatingthe feeder member and pen point'.
from one end o'f the barrel to the other and ing the said extended end of the closure cap, the
barrel being formed next toone end thereof with` bypasses of a length for effecting fluid iiow to;A
US297581A 1939-10-02 1939-10-02 Fountain pen Expired - Lifetime US2223487A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449567A (en) * 1946-04-04 1948-09-21 Ludwig F Perwas Fountain pen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449567A (en) * 1946-04-04 1948-09-21 Ludwig F Perwas Fountain pen

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