US1606973A - Fountain pen - Google Patents

Description

Nev. 16, 1926. 1,606,973

w. D. ROEDER FOUNTAIN PEN Filed March 19, 1926 1a 1/ 1o 15 I8 19-16 22 2o E5 "III/II II J Patented Nov. 16, 192 6.

wIL I Mn nonnER, or nwranr, ILLINOIS.

FOUnTAIN-PE Application filedyMarbh 19, 1926. Serial No 95,851. Y

' These improvements relate to fountain pens. a'ndhave for their prime object the provision -of-a notably simple, eas1ly 0perated, cheap andsat-isfactory fountain pen device. r

The present improvementshave a more specific, relation to means i0 7 charging a fountain pen device with ink, and arein that class of fountain pen structures in which piston pump means are provided. It is not new to provide a piston cooperatingwiththe shell or barrel for drawing ink into the hollow interior of the device, no r to provide a hollow piston for the purpose.

y In such constructions, speaking generally; a problem. arises as to the disposition ofv air during the pumping operation and in the provision of means for. preventinganundue flow of ink at the penpoint due tothe presence of an excess of air withingthe' pen chamber during the writing operation, Such difficulties have been sought to be overcome in various ways including automatically-op crating valves 7 variously disposed within the device, such valves becoming cloggedwith ink and for; various other reasons proving unsatisfactory. 1 I I i Q It has also been'suggested to have .the op erator apply a finger to an air duct in the hollow plunger to provide the desir-ed pai v tial vacuum, the removal of the finger permitting air to escape on the inward stroke of the plunger, with means for sealing such vent opening when the device is in use, which construction results in soiling thefinger of theoperator, a coating of ink on the outside of the plunger, and still other object-ions ,It is anob'ject to overcomeall such disad vantages, and by simple means.

In the drawings Figure'l'is nal section through the pen complete, except for the front end portion, showing the several parts of the device intheir normal rela= tive positions when the deviceis'incondition for use;.-Fig. 2 is a similar section ofthe same parts, omitting the outer cap, showing the piston. partly withdrawn, "as in the act of fillingthepen; and Fig.3 isan enlarged through the e lnt Qr' 'ubea 1-,, -The' tub lar shell or casing "10., illustrated in; the drawings may be .of "'metal,.har d :rub ber,. etc: in aceo rdance with ordinary pie a longitudi I head or nozzle member 11 which, as shownby 1 Fig. 3, is'cylindrioally bored and provided with a tightly-fitting'plug 12,;cylindrical in form and extending beyond the head 11, with recess prov sions between it and the head 11 for receivingthe pen point 113. A duct 14- 5 leads from thehollow interior 15 of'the casing ito the undersurface of the pen point .13.

There is nothing peculiar about the construction of the :shell' creasing 10, the head 11,

the pen point 13 and theplug l2 asthus far described, and the only departure at'the front end to be noted is in the provision of the duct 15 leading from the'innerend ofthe head 11 to the outer end of the plug 12, the v duct' 15 opening. at. 15 K; The present im provein-ents maybe applied to pen constructions of various details at the normally front end, H

.. Within there is a hollow plunger 116, which may be a 'p1eceofmet-al p1pe, hard rubber, etc. Spaced ing a good interfitting sliding engagement the. c lindrical shell 01: 1 0 i with the cylindrical hollow,interiorl5 of the shell. The body of the-tubular piston 16 I passes with a niceslidin'g fit through a; cir

um constricted opening in the nipple-like extension 19 .ofthe barrel 10. The outer end 20 .of the piston tube l6'is closed as by aoplat-e soldered thereat, andaxia'lly extending from this fixed closure'20 is a small pin21 passing through a constricted opening in a small cap like art ed the casing A head 24; on the pin'.2l providesia swiveled connection be tween-the .cap22 and the piston' as' when;

' .rExtending' from. the duct. 15 (Fig; ,3 151a smallpipe 25 which, as will-be observed from Figs, 1' and, 2, extends intothe hollowi1i y terior of the pist 'onpand (Fig. reaches e1 most to the end of Ithe'closure 20 atthe outer end of the plstonl when the parts are in:

their normal relationsfor useIfBetweenfthis, losureQOand the 'endofthe tube-25 is poisi I tioh'eaa packing e erh nt 2 L' h y er? soft rubber; zorkTrfsiniilar maritime when spadtpredn e1me dee en steer n .22, havinga'n internal thread a't 23 adapted 9 to engageanexternal thread'on'the nippleing its outer end into an enlargement of the duct whereby a continuous duct is provided from the opening at 15 to the inner end of the tube 25.

The cap 27 is shown as an ordinary element oi fountain pen construction adapted to fit upon the rear end of the barrel to extend its length for writing purposes, and upon the front end to cover the pen point when the device is not in use.

The operation of the device is as follows: The outer cap 27 being laid aside, the small. er cap 22 is unscrewed from the nipple 19, thus freeing the piston torlpumping action,

' an-dthis cap 22 then becomes a finger piece lhe pen-point is for operating the piston. dipped into a supply of inkso that th'eopening at 15* is covered. In most instances it will be preferable also to dip the pen deeply eter of the pump parts.

' enough to cover a portion of the end part 11 of the head 11 to exclude outer air irom the. duct 14.. The piston is then drawn outwardly creating a partial vacuum" which draws ink into the "hollow interior '15 through both thedu'cts Hand 15.

While the piston 16 may be long enough to extend to the head ll, whereby asingle withdrawal of the piston would charge-the hollow interior to completion, and even with an excess amount of ink, I prefer to have the piston considerably shorter than the length of the barrel, both to avoid charging with an excess which would have to be foreedout, and to-give'the barrel somewhat" greater capacity since the space at 28 surrounding the hollow piston stem 16 is normally free of ink. f 1 With the piston thus shortened the pen may be filled on one strokeyor one or more additional pumping strokes may be required, according tothe relative length and dianr Should the'first outward stroke not fill the'hollow interior, on the return stroke the air displaced by the inward movement passes forward through the tube 25 and out of theopening 15 The pen does not need tobe withdrawn from theink on the return stroke as the bubbling oi the ink in the supply does'no harm; @n'

the second pumping stroke more ink is drawn into the hollow lnterior as before; A 7

third pumping strokernay be employed'if made necessary by a"particular "construe ti0n;'but at any tiinejthat'the' pen is filled.

the return stroke results merely forcing excess ink out through the ducts Hand r The cap 22 is then threaded back uponthev nipple 19,- thus sealing the inner open end or the small pipe by the 'packing or' stoppage 26. It isthereuponirnpossible for air neglimeans ed me as specific construction, upon the provisions made for controlling the feed to the pen proper.

In practlce the operator will dip the front. end of the device into the ink supply and inner end of the. pipe prevents its discharge through the opening 15% However, the pipe 25 and duct 15 may be cleared'ot ink by lifting the pen out of the supply, drawing back the plunger slightly,'sucki-ng theink in these duct means 15 and 25 into "the iollow interior of the device, whereupon, on the final return stroke a little in-kmay issue through the'port l4: and'only air or air and ink 'vvill pass forward through the pipe 25. This operation"may be repeated. 'The duct -15 25 is the principal passageway for both intake and discharge since the duct 14 is fairly well closed by the pen proper. r

I contemplate as being included in these This would not be a real objection since the sealing of the improvementssuch changes, departures and variations from what is herein specifically illustrated and described as tall withinthe scope of the appendedclaims. V I claim: a V

- 1'. Ina fountain pen, the combination of a tubular casing, means at one end thereof for holding a pen proper in communication with the hollow interiorof the cas1ng,'p1sice ton pump means within 7 the casing for drawing ink into the hollow interior of the casing, a cap threaded upon the outer end or the casing, a swivel connection between said cap and said piston pump means 3 rovidin an intake duct for ink leadin. 2:: l o

from the end portion of the device adjacent to the pen properand extendin'g'into the hollow interior or the casing,'and meanscaneschewing inkin'to the hollow interior of the casing; afi-nger piece swivelled' to the outer endof said, pump means; means for holding the finger piece-upon theca'sing',

meansproviding 'an intake duct'torihk lea-ding from 'the*e1id--portion hrrhe device ad= jacenrto the pe pepper ar ses-treading into the hollow inter or of the. means," and intensifier se'alingjthe'irinei d tsa id 'duct 1 when "the sei e'ralifparts eras ev'ic'e in for a a lastrh ir'.,s rn al:grs

baa-g-eaeeeby se peg ton and engaging the inner end of said duct on the inward stroke of the piston.

3. In a fountain pen, the combination of a tubular casing, means at one end thereof for holding a pen proper in communication with the hollow interior of the casing, a tubular piston having. an open inner end and coacting with the casing to provide pump means for drawing ink into the 1101- low interior of the casing, means provid- 7 ing an intake duct for ink leading from the end portion of the device adjacent to.

the pen proper and extending into the open end. of the hollow piston, and means for sealing the inner end of said duct when the device is normally in condition for use.

4. In a fountain pen, the combination of a tubular casing, means at one end thereof for holding a pen proper in communication with the hollow interior of the casing, a tubular piston having an open inner end I and'coacting with the casing to provide pump means for drawing ink into the hollow interior of the casing, means providing V 5. a fountain pen, the: combination of i a tubular casing, means at its forward end for holding'aspen proper, a tubular piston having an open inner end and a closed I outer end and coacting with the casing to *provide pump means for-drawing ink into" the hollow interior of the casing, a feeder for extending forward from the casing and underlying the pen proper, said feeder having a duct for feeding ink to the pen proper from the interior of the casing, said feederhaving an intake duct for ink leading from near the free end portion of the feeder normally'adjacent to the pen proper and extending to the interior of the casing, and

a tube extending from said last mentioned duct into the open end of the hollow piston, and means carried bythe pistonrat its outer end portion for sealing the free end of said tube when the device is normally in condition for use. i v

6. In a fountain pen, the combination of a,

tubular casing, means at one end thereof for holding a pen proper in communication with the hollow interior of the casing, a feeder normally adjacent to the pen'proper and extending forward from the end of the casing, a tubular piston having an open inner end and a closed outer end and coacting with the casing to provide pump means for drawing ink into the hollow interior'of the caslng, means providing an intake duct for ink leading from near the free endof the feeder adjacent to the pen proper and entending into the open fend of the hollow piston and to a place adjacent to the outer end of the p ston when'thepiston is at the end of its inward stroke, means within the piston and at its outer end for sealing the inner end ofsaid duct when the pistonis at the end offlitsinward stroke, and means for securing the pistonin fixed relation to the casing with the piston at the end of its inward stroke. 7

7 In a fountainpen, the combination of a tubular casing means at one end thereof for holding a penproper in communication with the hollow interior of the casing, a tubular piston having an open inner end and a closed outer end and coacting with the casing to rovide pump means for drawing ink into t e hollow interior of thecasing, means providing an intakeflduct for ink leading from the end'portion of the device.

adjacent to the pen proper and extending:

into the open endof the hollow piston and ill),'

to a place adjacent tofthe outer end of the ,pistonwhen the. piston is atthe end of its inward stroke, means within the piston and at .its outer end-for sealing the inner end, of said duct when the piston is at thezend of its inward stroke, and means for secur ing the piston in fixed relation to thecasing with the piston at the end of its inward stroke, said last-mentioned means including i a finger-piece swiveled to the piston, said finger-piece and the cas ng. llStVlIlg coacting screw threads.

i? t WILLIAM n. Romans.

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