US854487A - Eraser-holder for lead-pencils. - Google Patents

Description

No. 854,437 PATENTED MAY 21, 1907.

B. B. GOLDSMITH.

ERASER HLDER FOR LEAD PBNGILS.

APPLIUATION FILED DEG. Z9. 1906.

Briton scoliosi/irritiert NEW YoRK, n. Y.

ERASERNHOLDQEB FGW LEDHPENCILS.

souffler.

Specification of Letters Patent.

Patented May 2l, 1907.

Application filed Deemlaer 29, 1906. Serial No. 349,930.

To r1.7/ 'nfl/,mit it 'nan/y concern/ Y Be it known that l, BYRON B. GoLnsMiTn, a citizen ol' the United States, residing at New York, in the county of New York, in the State ol New York, have invented anew and useful llrasenllolder for Lead-Pencils, oi' which the following is a specification.

A\l invention has reference to improvements in eraser holders for lead pencils, the main feature ol the invention being to )rovide a short holder for the reception an eraser block of greater length than the length o'l" the holder, so as to project at both ends l'roin the same, and to providethe butt end ol the lead pencil with a housing for the eraser holder, which can thus be removed from the housing and reinsorted either in a reversed position so as to expose a new eraser surface for use, or in the original position alter the eraser block has been led'outwardly so that it cui be used up through the greater part oi' its length.

ln the accompanying drawing, which forms a part oi this spl ziiication the invention is illustrated as ollowse Figure l is an elevation of a lead pencil provii'led with one form of removable eraser holder, and Fig. 2 is a longitudinal section thereof, partly in elevation. Figs. 3, 4 and 5 illustrato another form of the invention in elevation, longitudinal section and perspective, respectively, and Figs. 6, 7 and S are like views of still another forni which the invention may assume.

Like numerals of reference indicate like parts all throughout the drawing.

ln these drawings, in Figs. l, 2, 3 and 4, the lead pencil l is shown as of anordinary cylindrical type, and to the butt end of the pencil is secured in irremovable Jfashion a ierrule E, in the usual manner as by indentations 3, made' in the ferrule after it has been slipped over the butt end of the pencil, and by which a part of the metal of the ferrule is driven into the. 'wood of the pencil. This is the ordinary mode of securing a ferrule to "a lead pencil, but any other means maybe employed. ln Figs. l and 2 there is shown an internal screw thread 4 at or near 'the rear end of the ferrule, for the reception inv a detachable and reversible fashion of the eraser holding sleeve. or tube This eraser holding sleeve or tube, which is rather short, has 'formed at each end a screw thread, spun into the sleeve, so as to serve both as a female and male screw, and between these l rule and pushing the block outwardly from two screw threads is a Vmilled bead G, which serves two purposes. 'ltserves as a finger hold by which the sleeve or tube is grasped for screwing either end of it into the rear end 6o of. the errulaand it also serves as a stop, limiting the extent to which the sleeve or tube can be screwed into theferrule. rlhis sleeve or tube 5 is the real eraser block holder, and

in the form shown in Figs. 1 and 2 the eraser o5 block 7, may be either of uniform structure l all throughout its length or may be formed through one half of its length as a pencil eraser and through the other half of its The eraser block 7o length as an ink. eraser. being considerably longer than its holder lt projects, when centrally seated,'beyond each end of the same. It the block is made uniform throughout it can be :ted outwardly,

after its exposed portion has been used up, 75

by unscrewing the sleeve or tube and holding it in one hand and turning the rubber in the proper direction by the other hand, since the rubber block is screwed into the sleeve or holder. of the era-ser block can be utilized than with ordinary holders in which the eraser block is not adjustable. lf, however, the eraser block is i'orrned throughout one half of its length as a pencil eraser and throughout the 8 5 other half of its length as an ink eraser, either of the two ends can be used by unscrewing the holder and inserting it into vthe ferrule with'4 the other end. The end of the eraser block which .is not in use at a given 9o time is protected trom soiling by being housed in the errule.

In the form shown in Figs. 3 4 and 5 the for rule is not screw-threaded, nor is the eraser holding sleeve. cated at S, and has in addition thereto a number of longitudinal slots 9, whereby the. sleeve is rendered elastically expansible and the eraser block is held therein frictionally. The sleeve itself is inserted into the 'ferrule roo by slightly compressing Ait about the eraser block and forcing it into the ierrule longitudinally, where it is then held frictionally and safely, the bead 6 serving, as in the case of Fi l and 2, both as a iineer hold and as a zo' e :s

stop. Vvlith this construct-ion the eraserblock would be made all throughout uniformly, either as a pencil or as an ink eraser, and when the outwardly project-ing end has been used up another portion can be projected iro for use4 by removing the holder from the fer ln this manner double the length 8o The latter'is split, as indi- 9 5 the rear, which can be easily done, since the sleeve or holder is eXpansible.

In. Figs. 6, 7 and 8 the eraser holding sleeve or tube is constructed the same as shown in nFigs. 2, 4 and 5, but it is here specially adapted'for use on a lead pencil that is onsiderably thicker at the'butt end than at the Writing end. Such pencils have been in use t'orJ a long time, and in order to adapt it forI the reception of the expansible eraser bloc holder 5, a special construction must be em iloyed. As shown in Fig. 7 there is termed in the butt end of thepencil an axialy cylindrical cav1ty 10, of sul'l'icient length to receive the sleeve 5 with its r(-\.arwardly projecting eraser block. Over the butt endof the pencil is mounted a ferrule 2/, which is dome. shaped where it projects beyond the butt end of the pencil, and has there a circular ppening, which permits the entrance ot' the sleeve 5. This sleeve 5 is provided with a shallow circumferential groove or, depression 5 next to the bead 6, and when the sleeve is inserted through the opening in the doineshaped ferrule 2 and is pushed into the cavity 10, the edge l1 ofl the opening ol the ome shaped ferrule snaps into this groove 5 and thus elastically clamps the eraser holder in position. rlhe diameter of the cavity. l() is, as indicated in Fig. 7, slightly greater than that oi the opening .in the dome shaped lierrule 2,-so that the sleeve 5 isnot frictionally held, to any particular extent, in that cavity, but is safely held by the engagement of the edge l1 with the groeve holding of the eraser holding sleeve 5, it is not absolutely essential, since even in the ablsenceof the groove the edge of the opening of the dome shaped hold upon the sleeve, even the groove.

lilaving now fully described my ferrule would have sullicient 1n the absence ofinvention seater I what I desire to secure by Letters Patent is:

l. The combination of a lead pencil provided with a ferrule irremovably secured to its butt end, an open ended eraser holder detachably fitted to the ferrule, and an eraser block projecting from each end or' the holder, substantially as described.

2. lead pencil provided. with a ferrule irreinovablysecured toits butt end, an eraser `holder detachably and reversibly tted to the terrule, and an eraser block held in the holder and longitudinally adjustable therein, j substantially as describe 3. A lead pencil provided with a ferrule at its butt end', an eraser holding open ended sleeve fitted to the Jerrule for insertion and removal at both ends, and an eraser block in the holder projecting at both ends therefrom and longitudinally adjustable therein, substantially as described. 1

4. A lead pencil'provid'ed with -a ferrule at its butt end, an o en ended eraser holding i sleeve, screw-threat ed at each end and each l end fitted for insertion .in and removal from the terrule, and an eraser block in the 'holder projecting at each end therefrom and longitudinally adjustable therein, substantially as described. A

5. An open ended eraser holding sleeve, screw threaded. at each endsand each end .fitted for insertion in and removal from a fcrrule or tube, an eraser block in the holder projecting at each end therefrom and longitudmally adjustable therein, and la screw threaded ferrule or tube into which the holder lits, substantially as described.

ln testimony` whereof I have signed my 30 naine to this specification in the presence of ,l two subscribing witnesses. 'i

BYRON B. GOLDSMITH. Witnesses ,v

K. E. FINN, V L OSCAR WIENER.

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