US1509008A - Fountain pen - Google Patents

Description

J. M.v WALLACE FOUNTAIN PEN sepf;.16,1924.v y 1,509,008

Filed Dec. 19, l1922 Patented Sept. 16, 1924.

' UNITED JAMES IVI. WALLACE, OF SPARTANBURG, SOUTH CAROLINA.

FOUNTAIN PEN.

Application iled December 19, 1922. Serial No. 607,899.

To all whom t may concern.'

Be it known that I, JAMES M. WALLACE, a citizen of the United States, residing at Spartanburg, in the county of Spartanburg and State of South Carolina, have invented certain new and useful Improvements in Fountain Pens, of which the following is a specification. 1

This invention relates to fountain pens and more particularly ,to that type which are self-filling.

One of the primary objects of the present invention is to provide 'in a fountain pen of the type referred to a novel means -for creating suction to draw a supply of ink into the barrel of the pen and which means will present advantages over devices for this purpose as ordinarily constructed. Ordinarily `a soft subber bulb is employed in combination with means or compressing the same to expel the air and then relieving the same of pressure to draw in a supply of ink upon expansion of the bulb, but it has been found that in the use of such devices the ink has a -deteriorating effect upon the bulb with the result that the bulb will leak after a short period of use. Therefore, the present 'invention has as its object to provide a suction-creating means devoid of rubber bulbs or other parts subject to deterioration Aby the ink and which parts will not be liable to become disarranged or damaged so as to require repair or replacement.

The invention contemplates a fountain pen within the barrel of which a piston is arranged and 'is adapted to be manipulated so as to create a suction within the barrel to drawin a supply of ink, and'it is another important object of the present invention to so construct. this piston thatit will be capable of being given a stroke of maximum length so that the pcn'will have a maximum capacity for ink and therefore less frequently require filling than would be the case if the piston had only a short stroke and occupied a considerable portion of the length ofthe barrel. l

Another object of the invention is to so construct and mount'the piston that after it has been manipulated to draw a supply of ink into the barrel of the pen, it may be fixed in its retracted position and held against displacement longitudinally of the barrel which, if permitted, would result in the ejection of the ink in undesirable volume.

An other object of the invention'is to provide the piston with a stem comprising sections normally housed in collapsed form within the head ofthe piston and adapted to be drawn out and inter-locked to' provide a solid ,stem of considerable length when it becomes necessary to employ the piston in refilling the pen, so that when the pistonv is not in use it will occupy piston head being given a full va yminimum space Awithin the barrel of the and readily inter-locked" both `to maintain them in their extended relation and to likewise adapt the stem to be employed as a means for adjusting the piston head to lock the same in retracted position.

In the accompanying drawings- Figure 1 is a view in side elevation of the pen embodying the invention;

Figure 2 is: a vertical longitudinal sectional vieu therethrough, the piston stem `being l In the drawings, the barrel of thepen is vindicated in general by the numeral l,this

barrel, as well as the other component parts re 4 is a similar view-illustrating the piston at the limit of its forward stroke.

of theY pento be presently described, being made of hard rubber, or any1 other material found suitable for thev purpose. The barrel l is of hollo-w cylindrical form and in itself is open at both ends,being interiorly threaded at its forward end, as at 2, to receive the reduced threaded end 3 o'f the pen holding ferrule 4L in which is fitted the usual pen 5 and feeder 6. The ferrule 4 may be exteriorly threaded, as at 7, to provide for the application to the ferrule and to the forward end of the barrel, of the usual cap 8 which, when in place, will protect the pen point 5.

The other end of the barrel l is interiorly threaded as indicated by the numeral 9, and fitted into this endof the barrel is a nipple iii) which is eXteriorly threaded as at-11 to lit the threads 9 and also to provide for the application to this end of the barrel ot' a cap 12 which serves, when in place, to

close and protect the outer end ol the piston,

stern.

The piston is indicated in general by the nuineral 13 and the saine comprises a head 1;1 which is of hollow cylindrical torinand closed atV its torward end, as indicated by the numeral 15, `the head being of a diani` eter to lit snugly in a fluid-tight inanner and slidably in the bore of the barrel 1. The head at its open endis interiorly threaded as at 16, and iitted into the head is one section of the stein oi' the piston which sectionv is indicated by the numeral. 17, other sections being indicated by thenurnerals 18 and 19. The section 17 of the stein is et hollow cylindrical forni and ior a portion of its length atione end is enteriorly threaded, as at 20.,

the threads 2O iitting,` the threads- -16 and..

theA said section 17 being in this manner secured within the `head 14;. A. lslot 21 is formed longitudinally in the wall oi2 the section 17 and, in the portion of the said-sec tion which projects beyond the open end of the head 1li, isv provided with a laterally.

turned branch 22 which extendsifor a short distance circuinierentially of the section 17. The section 18 ot the piston stein is fitted atione end into the-section 17 and isprovided at its said end with a short radially projectingl stud 23 which lits and 'works in the slot 21 and its branch 22; rThis section Aof thesteni is likewise of a hollow cylindrical torni and;A is provided with a longitudinally extending slot 211 having, near the other end of the said section, a lateral branch 25, corresponding` to the branch 22 of the slot 21. The section 19 of the stein is likewise ot cylindrical orin and may be either hollow or solid and is fitted at one end into the outer, end.v

ofthe. stein section 18 and provided at'its said end with a stud 26 .working` .in :thefslot 241 and its Abranch 25 and correspondingto the stud 23. At its outer end the stein section 19v is provided with a knurled head 2i' constituting' a finger piece whereby the stein inay be adjusted and manipulated as will presently be explained.

Referring now to Figure 2 ol' the drawings it'will be observed. that normallyl .the

section 18 will be practically completely. housed within the section 17, and the. section 19 will bepractically completely housed within the sect-ion 18, all of .these sections.

ment .of the parts* ybeing@eiiiected'by rotating the knurled finger knob 27, it being understood that rotative inovernent of this knob will beiinparted iinally? to` -the section 17 because of the engagement of the studs ' f 23 and 26 in the slots 21 and 24. Therefore, with thelcap 12.applied, the piston will be protected and concealed and will occupy a iiiiiiiniuin space withinthebo-re .of the :bar-

rel 1. lhenthesupply of ink requires .rer' knurled finger v knob. 27. is .rotated so ,as to f unthread thesection .17 fronitlie-L nipple: 10,

and thus `release-the',said section .17 from.

the nipple,v and the .sections.18 .and19 are then drawn out until the studsvr 23. and; 2G en gage in .the -rear. ends of thel slots21and 24, respectively, whereupon .-.theringer knob 27 is again rotated in a reverse ffdirecton v so as to cause lthestudsto. .enterthefbranches 22 and 25 :ofthe said slots. ,thus lo`ckng.all of the sections of. the Vstemrii. vtheir extended relation asishown in .Figure 3 Aof. tliedraw-l head of the, piston forwardly. .in. the bore ings. Forward ipressureinay. thenbeexerted against theatinger knohso .asueto iinove. the

of the barrel unftilthe par ts. hav e. assumed about the `position shown in Figure 4, iand the pointer forward end of-,.the .pen -inay then be dipped into .theiink to .betaken ,up and the piston .then v.retracted 'so :as .tocreate suction and draw ya supply. ofthe ink into` the barrel. After thepiston .hasreached 'the limit of Lits suction.: stroke,. -the knob 27 is,

rotatedto disengage the studs-from the branches of the slotsI in which they ,Mworloand the sections of thepiston stemare then telescoped to the. collapsedfcondition shown in Figure 2 whereby the .pist0.n.. in;its .entirety may be rotated so Vas to again threadfthe section 17 into the.nipple10,(the .cap12 being ofcourse reappliedso as. to coiren and conceal the,.piston. .and protect.v the saine.

Having. thus described theiiiventioin.what

is -claiined as new yis 1. 1n a ,fountain pen,..a barrel Vequipped with the, usual writing point, .the;.barrelhav.-4

ing interior threadsat .one en.d, a nipplef formedeXteriorly.. and interio'rly. with threads, the. said .-1 nipplev .being threaded at one end linto .the .threaded end. of thebarrel,l

a .piston coinprisinga head, .and a stemgtor the piston comprising ,connected f telescopic sections, one of said `sections.being enteriorly threaded and screwed intol the head, the said section having a part not, its exteriorly threaded portion. .extendingI abeyond the eiid of the head-into .which thesaid section is threaded, whereby,1 wheny the pistonliead is retracted, the; yprojecting ,eind fof [the said stein section.. may; be, :rotated through .the

connection provided.. between, the te-lescopic stein sections and f lthread-et1nlntot the i. said nipple.

2. 1n a fountain pen, a barrel equipped n with the usual writing point, the barrel having interior threads at one end, a nipple formed exteriorly and nt-eriorly with threads, the said nipple being` threaded at one end into the threaded end of the barrel and projecting at its opposite end beyond the said end of the barrel, a piston comprising a head, and a stein for the. piston cornprising connected telescopic sections, one of said sections being eXterio-rly threaded and screwed into the head, the said section having a part of its eXteriorly threaded portion extending beyond the end of the head into which the said section is threaded, whereby when the pistonhead is retracted, the projecting end of the sai'dstemseotion maybe rotated through the connection provided between the telescopic stem sections vand threaded into the said nipple, and a cap interiorly threadedand tted onto the proj ecting end of the said nipple and enclosing the outer ends of the said telescopic stern sections when the sections are telescoped t-ogether. I

In testimony whereof I affix my signature.

JAMES M. WALLACE. [L 8.]

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