US1085714A - Ink-pencil. - Google Patents

Description

J. WALLACE.

INK PENCIL. PPLImTIoN FILED, mums, 1910. msmwnn neo. 1s, 191s.

1,085,7'14, I Patented Feb. 3, 1914 ahw/Moz JOSEPH WALLACE, F CHICAGO, ILLINOIS.

` INK-PENCIL.

specification of Letters Patent.

Patented Feb. 3,1914.

Application Ied J'une18,.1910, Se1'ia1.Nm.567-,562..IRenewedflllecember 18,-1913..-Seria1-N0.' 802,565.

To all 'whom it may concern citizen of, lthe United States' of-.'America,. re-

sidingat Chicago, in the county of'Cookand State-of Illinois5. haveinvented Inew and useful lImprovements in v{Ink Pencils, fof VWhich-.the following is a specification.

The. invention relates tol an improvement in ink pencils,beingf more-particularlyI di rected to a means Wherebyi-the' airysupplyf to -inducertheready'riiowfl of the Writing fluid-maybe yrenderedfmore certain,\.andthe -varlous parts arranged to -sprovide for such@ air supply orL vent readily separable to: permit their convenient cleaning.

' The mainobject of: the present invention is the provision: of .means for venting or- .supplying air to.- the interior of the Pencil to -induce a proper floW'of-.the Writing fluid,A

said. means beingv so constructed-asta be readily separable for cleaning and so: ar, lranged in the .completed structure. as to afford an even,steady flow of th'eiuid when .the pencil is; inuse, and adapting the closing cap for direct engagement with the bar- -reland Wholly free'ot contact vvvith the con;

- inthe operation of thecap.

-nection for the. venting means whereby. toJ

avoid accidental disconnection of such means The invention in its preferred details of construction will be described inthe A-follovving specification, reference beingv had -particularly to the accompanying drawings, in

Figure 1 is a longitudinal section through an ink pencil constructed in accordance with insection, of the completed pen. ig. 5 1s a fragmentary sectionypartly in eleva-f1 -my invention.

Fig. 2 is a transversef'sec-- tionon the line 2--2 of Fig.` l. Fig. 3 is; a perspective -view of the pin -carrien and pin. Fig. 4 is a view in elevation, artly.

tion, of the upper or handle end of the pen. Fig. 6 is a fragmentary.longitudinal.'sec. tion, partly in elevation, illustrating 'a modied construction of-the` air: supply means. Fig. 7 is a similar vieW showing a different form. y

Referring particularly to the accompany- *l ing drawing, the improved inkpencil or.-

stylographic pen comprises abarrel 1` interiorly threaded at one end {for-fthe recep-z tion of the pointpiece or member 2,.-Which point piece'is of the usual .construction lhavdisconnecting the parts. l Beyond :therough- .Yened-portionrthe pointpiece is circumferen l. tially reduced to `provide for ythe lreception 'of aclosing cap 4, andlbeyond the reduced portion tapers to the usual Writingk point.

form illustrated in Figs. 1 and 4,. circumferforthe reception of the cap While the, pen 'is in use; The extension 5 is. interiorly :threaded to receive the exteriorly: threaded lend, of a holdingsleeve 6. The .opposite .end of. the sleeve 6 is interiorly threaded to formed Withyan inwardly extending tubelike section 8,:the bore of which opens through the cap to provide for the entrance of air tothe interior. Thersection 8 has a diameter materially less than the .interior diameter ofthe cap, thereby provi ing an annular chamber 9. in .the `cap and s`unrnnd i ingthe v1tube section Stfor a purpose which will presently gappear. Immediately adjacent its juncture with the extension 5 on the. barrel` vthe -sleeve .member 6 is formed l with a transverse .partition 10 having acentral .openin 11 indirect alinement with and corresponding to the opening of the tube4 section 8.

:An airtube- 12 is provided comprising a suitable lengthz of a .tube-like section having; anezrterior diameter corresponding to the interior diameter' of the. opening 11,in, the partition I 10, whereby -said ,air tube/may` be frictiona-lly held .Within said .-openfingf and thus in alinement.. withA though spaced from .the tube section 8 of the vent cap. That 6 is provided with a lremovable closing section 13,z also a tube-like member having an exteriordiameter corresponding tothe interior diameter of theair tube'12, so that the closin section may be removably infrictionallyff-held thereinagainst displace-4 ment during use. The outer or=free end of 4the' Asection 13 is closed, the circular Wall of --said section,: preferably adjacent the closed :The opposing end of thebarrel is, inthe entially-reduced to) provide, an fextension 5 receive a-vent cap 7 which cap is centrally lend-fy of the air tube remotefrom ythe sleeve serted wit in the end of the air tube and end, is formed with one or more vent open- I 2 is what I term apin carrier, comprisingl spaced sections 15 and 16 conformlng. on

upper end of the point pice.

ings 14.

Slidably mounted within the point piecetheir outer surfaces to the curvature of the lower-ends thev sections and 16 of the carrier are connected by a transverse bridge plate 17 centrally formed with an opening 18 having a diameter exceeding that of the air tube. The usual closing 1n 19 is provided, forming the terminal o? a spring section 20 preferably constructed of convolutions having gradually decreasing diameters toward the pin. The spring section, at its upper end, is securedwithin the opening 18 of the carrier, whereby the life of this part of the pen is materially increased through the manner of 'connecting the spring and carrier, while at the same time the flow of ink from the barrel is, .through the carrier, in a direct line with the writing point, whereby the feed is of the direct gravity type throughout the length of the carrier throughout the length ofthe spring.

With the partsassembled for use it will be noted that the free en d of the closing section of the air tube terminates immediately. above the opening 18 of the carrier, whereby all interference lwith the flowof ink through the opening 18 and. through the spring is lavoided. Furthermore, there is formed between the upper end of air tube and the lower end of the tube section 8 of the Vent cap a chamber into which an ink which may find its way into the airtu e on the inversion of the pencil will be caught. This will tend in a measure to free the air tube and tube' section 8 ofthe vent cap of any possibility of clogging. The important feature, however, in connection with the invention is the arrangement of parts for convenient separation to permit. their ready cleansing in the event of clogging. For example, the removal of. the vent cap 7 provides complete access to the interior of the sleeve 6, and the separation of this sleeve from the valvev drawing with it theair tube 12 provides access to these parts. Upon the nemoval of the closing section 13 ofthe air tube an unrestricted passage is provided which may be readily and conveniently cleansed in a simple and expeditious manner, as for example by forcing water through the same. It being appreciated .that Ait is through the clogging of the air supply that stylographic pens and similar automatic ink A t their feeding writers are rendered inoperative,l

apparent. kThis object is readily attained byuthe construction described and in a manner to avoid complication and without .in creasing the cost of construction. It will be further noted that the closing cap 4 directly engages the barrel while at the sametimeeinclosing the holding sleeve6 and vent. cap 7, the closing cap being wholly free of connection' with the holding sleeve and vent capV to avoid accidental movement of these parts in the separation of the cap from the barrel.

'In Fig'. 5, I have shown a construction identical with that described in connection with Fig. 1 except that in thisinstance the upper end of the sleeve section 6 is circumferentially reduced, as at 21 to receive the v cap 4, and that portion of'the sleeve intermediate the cap vand barrel i's peripherally roughened, as at 22, for convenience in connecting or separating the parts.

Fig. 6 discloses a construction identical with that in IFig. 5 except that the sleeve section 6 is arranged for exterior connection with the barrel, as at- 23, instead of having Ainterior connection therewith, as in the preferred form. 'I

In Fig.. 7, I have shown the air tube holding artition, as 24, corresponding to thev partition 10 in the preferred form as integral with the barrel, and formed to prevent .the cap 25 integral with and as a part of a sleeve member 26 arranged for exterior threaded connection with the.barrel immediately adjacent the partition 24.

' In all these forms provision is made beyond the air tube, fas by an enlarged chamber or the like for the reception of any .ink which may find itsway into the air tube, which chamber is, of co'urse,closedjagainst the ink receiving space of the barrel except through the air tube. Furthermore, in all the vforms the vent cap is separable from the barrel or from the contiguous part of .the pen and the air tube separable from the barrel and the 4l'atter is provided with a removable closing section, so that all parts which may posslbly be clogged with the ink,

and. which through such clogging would render thepen inoperative, may be conveniently reached for cleansing. It will lbe further noted .that the carrier is freely slidable lengthwise the point piece, whereby said carrier may be operated to project the pin a greater or less distance beyond the writing end of the point piece in order to clear the pin of any fiber or'the like taken up in writing, or to .adjust said pin to compensate for wear thereon.

Having .thus described the invention, what A stylographic pen including a barrel, a

point piece connected therewith :1t-one end 4of the barrel, a holding sleeve removably sleeve and extending engthwise the barrel, In testimon wheredf I ax my signature alvent ap Secfured t) thelxoldllig svesaic" in presence o two witnesses. s eeve elng orme Wit a c am r c ose Vby the vent 4cap, and a pen closing cap def JOSEPH WALLACE 6 signed to inclose but free of Contact with the Witnesses holding sleeve and vent cap, said closing c'ap D. W. GOULD, directly engaging the barrel. BENNE'IT S. J omas.f

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