US1307630A - Fountain-pen - Google Patents

Description

w. A. HASKINS.

FOUNTAIN PEN.

APPLICATION FILED NCIVl 14 1916. I* 1,307,630. Patented June24, 1919.

UNITED sTATEs PATENT onirica.

WILLIAM A. HASKINS, OF WEST SOMERVILLE, MASSACHUSTTS.

` roUNTAmfPEN.

` `speeifica'imn of Letters Patent;

Application led November 14, 1916. Serial No. 131,329.

type wherein thepen bar carries a; shut-off adapted to controlthe flow of ink from the ink reservoir. 1

In such pens the pen bar has usually a containedv position within the barrel vwhen the pen is not ready for use and a rojected position beyond the barrel whentiie pen is ready forwriting. The movement of the pen bar seals and unseals the ink reservoir, and this movement may beefected in any desired manner, and is usuallyv effected 4by rotating it by means of a cap.

The object of my invention is' to refine and improve the construction of pens of this type, and particularly to provide an inktight control for the ink reservoirso that the en may be carriedin any position within tllle pocket. with assurance thatthe ink will not leak. Mechanically, my pen involves certain characteristic features of which the most advantageous is perhaps the provision of the seat for the shut-oif during the production of the fore part of the barrel itself. According to my invention, the fore part is bored and counterbored to leave a conical or other seat for the shut-01T of the pen bar. This insures that the seat will be located in precisely the proper position relative to the pen bar, besides securing a permanently fixed seat the position of which cannot be changed by rough usage of the pen. By this structure I am also able to provide a maximum opening for the free flow of ink by a minimum movement of the valve from its seat. This is a matter of the utmost importance in fountain pens where from the very nature of the article a certain amount of jarring is bound to occur and which jarring in a pen of the type wherein the seat is floating is likelyto dislodge the seat from its intended position relatlve to the pen bar.

The construction and manner of producing my pen is fully described in the specification which follows. In the drawings accompanying that specification I have indi- Patentea June 24., 1919.

cated like numerals yto indicate correspond-f1 I ing parts, and in the drawings: i Figures 1 and 2 are enlarged longitudinal sections throughthe fore part of the barrelin accordancewith my invention and showlng the pen bar mits carrying and writing positions.

Fig; 3 is an elevation of my pen with the rear part or cover for the barrel removed, and- Y Fig. tis a detail view of the compressible y'ink reservoir orvsac'k of my ypen removed.-

Ihave indicated at 1 the removable fore part of a pen barrel 15. The fore part 1 is Y reduced andthreaded at its upper end asindicated at 2 for adjustment tothe barrel 15, and beyond said threads 2 extends as a cylindrical or other :engageable portion 16 over Which the open end of a lcompressible ink sack or reservoir 17 of rubber or the like contained within `the barrel is adapted to frictionally engage. The barrel 15 is cut out sack during suchvcompression the sack has a stifi'ening element in the form of a conc'aved backing strip 19 `which is frictionally retained in position on the sack by inserting it under a retaining lip 2O formed on they fora portion of its length as indicated at 18 toy expose the underlying portion of the ink sackffor compression by the thumb in. filling the inksack. y Toassist in lling and to lprovide ythe necessary stiffness for the by slitting the barrel transversely. The prol jection 21 is adapted to frictionally engage the rear or cover portion of the barrel, not shown, and prevent said cover from accidentally disengaging from the barrel.

The fore part 1 is formed with an axial bore 3 which is counterbored as indicated at 4 t0 provide a gradually tapering area forming a conical seat for the similarly shaped shut-off 5 formed on the upper end of a movable pen bar 6. The pen bar 6 has rotative travel in the part 1 whereby to vary the position of the shut-ofi' 5 relative to the seat 4.

In the embodiment shown, this travel is provided for by forming thepen bar with an enlargement 7 in advance of the shut-off 5 which enlargement is threaded externally to engage a series of short threads 8 formed at a predetermined point in the bore 3 of the part v1.l VBeyond theitlireaded enlargement 7 the pen lbar extends as a cylindrical or slight'lytapered portion 9 which is: adapted to be engaged by the similarly shaped sleeve 10 of a cap 11. The openend` of the cap 11 is threaded to engagea short series 'of externalv threads 12 on the barrel.

15, whereby to retai n thecapI in, covering position to the pen 13 of the pen bar when the pen bar hasmoved :to its carrying. position. ,Y v,

In order to prevent complete withdrawal of the pen barfrom thefore part f1. when the pen barhas moved towriting position, rI

fore part 1 at the vproper point therein.

The openingL Vo1. the rlng .is of course large enough to permit ,the-wrench portion 10` of the cap l1 to clear the ring and engage the similargwrench portion 9,- of the pen bar.

`From the foregoing, it will be apparent thatI provide-a rigid immovable seat 4 for :the vshut-off,` valve 5 which seat cannot` be elected by rough handling ofthe penfand is therefore permanently vfixed `inA proper position to cooperate Withthe shutoff 5 to seal and unseal the ink reservoir.-` As a manufacturing step this'method of providinga seat in the production of the case 1 itself is highly advantageous, obviating as it A f'iii does the separa production of a seat member and theadditionalstep `of properly and yaccuratelyl 'as'sembling'i'"suchv`v separate member in the pen.

N'Vai'ious modifications in the form and construction of my pen may obviously be resortedto if within the limitsy of the appended claims.-

What I therefore-*claim and desire kto sccure by Letters Patent iss' l. Inapenothe ,classdescribech a'fore part (consisting of a,l 4tubular;memberhaving an axial bore *and adapted tov beattached*I at itsrear endftos-a penfbalfrel, anoutwardly;

:facing :seatvv formed on said, member intermediate the ends thereof, apenbar adjustably mounted in said bore and carrying a .conical shut-ofi1v adapted to nd said; seat,

and an internal ring threaded into said mem'` "ber at itsouter endand; constituting a stop rto limit .th'eadjustmentof the Vpen bar in one direction. l

2'; In a fountalnpema ltubular'member having a valve seat,a pen bar adjustable insaidmemb'er, a-valve movableby said-pen bar relative to said seat, 'and an internal stop ring'threaded intosaid member in advance-of said seat `and, adapted toprevent the adjustment of said .determined limit.

In testimony whereof 4:I aflix my signature in presence of' two Witnesses.

WILLIAMIA.' HASKI'NS,

AWitnesses :1- v

VICTORIA LowDEN, y AGNES4 V. OCONNELL. v i

i Y G opesofy this patent may befobtainedior ve cents each, .b y'ad-.dressng the Commissioner of Batents,

i 1 c y Washington, D. C.A

pen bar beyond a pre-y

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