US1848224A - Pencil holder - Google Patents

Description

C. SCHMID March 8, 1932.

FENCIL HOLDER filed May 28. 19

l Patented Mar. 8, 1932 y i* i I A* .l i' i uixufrizol STATES CARL SCHMID, oF GENEVA, swrrznnrinnn PENCIL :101.13113-A v n Appiicauon med may 26, 1930, seriai No. 455,929, and in `switzeriami my 25,v 1929. 7

I have led applications in Switzerland .'vThe spareleads 0 in theextensionftube Z May 25, 1929, Ser. No. 138,622, and in Ger- (Fig. ,2), on the lead a becoming shortened, many June 2l, 1929. Aare` fed automaticallyzinto the tube p, when The attached drawings show various emthe' holder is held vertically, and the com- 5- bodiinents of the subject of the invention. pleite supply of spai'e leads can be used in 55l Fig. l shows the exterior of the first form. this: in 'ann'er without any furtherA operation Fig. 2 shows on a larger scale the longitudi-` being necessar This is due to the fact that nal section of the above. the i-guidepiecec hasa conicalinilled edge set Figs. 3, 4 and 5 give on a larger scale the against the cap and the spare leads lie on this I0 longitudinal and cross sections ofthe clampconical surface. When the holder is held 6U ing piece. in` a rif'ertical position' the spare leads kslide Figs. 6 and 7 show on a large scale the byfgravityoii' 'thefconical surface into fthey longitudinal and cross sections of a` second oi'ificeof the' guide piece and thus into the form. casing p. To prevent twospare leads slid-l The lead a is fed into the tube p which is ing into the aperture together and jamming, 65

fitted withk a clamping piece c in the point theguide piece 7c is'provided with an edge for 1of the holder; as can be seen in Figs. 4 and 5 about three-quarters of the circumference of this clamp is provided with slots d. The the aperture which prevents more than one clamp 0 which has a conical seating surface sparelead from falling intothe casing'p ata'k the sectional cone of which is thickened tO- time. f V l i i i 70 wards the lead point is placed in a conical A modification (Figs. 63nd fyisjntended sea-ting of the holder It correspondingto the to permit of leads of different hardness'or conical surface of the Aclamping piece. The y colours, as required, being fed from the `spare vholdeiJ is securely fastened to vthe holder lead'holder into the casing p. This isett'ectltube z'. The casing p hasaguide piecelcandan ed by'fsubdividin'g the lead holder s. The 75 extending tube Z which isalso arranged to aC leads are fed intoy the casing by turning the as a holder for spare leads and is closed by cap u with the holder in a'vertical position. a cap m.. Between the holder 7i andthe guide A guide?1 fixed to the cap u prevents theleads piece a spring n has been let in which draws from falling from one partition in the holder' the clamp into the holder and thereby Secures into' thaperfure f 'the Casina p,

the lead in the roughened bore of the clamp-y A pencil Sharpener 90au bt built into the lng tube. AS a result'. Of the fIlClOn between' (mp for the purpose 0f Sharpenino the lead the lead and clamp due to the roughening of (Fig 2) The Cap is removab1e o i the bore of the clamping tube, pressure on the I Claim:

lead point drives the clamp further into the v 1, In a mechanical pencil the Combination 85 holder, and thus, aS the COHCll SulffaCe 0f the of a tubular pencil body, a slidable guide tube dampmg tub@ 1S thlckened Seqtlonaul to for thelead within the pencil body resilient wards the lead point the lead is jammed and @lm im, WS at the Omer e d of l -d f ield immovable, i. e. the position of the leadl tube Im Ijmvno, a rouhene innerlgllflc 4l in relation to the holder becomes fined. If 1t in Contact with the leadrsad damping jaws is required to push the lead out or in the cap 7. m must be pressed anc-[thus the damp is having a conical outer surface increasing forced out of the point of the holder, opens in diameter towards the lead Poit and, eX` and eleases the 18ml tending over a part of that length of the Jaws The roughenjng 0f the tube of the damp of which the in ner surface is ioughened, the 95 Y ing piece (F ig. 3) may consist, for instance, @nd 0f the PC D body having a conical HHGI 0f a, thread, and to prevent the twisting Of surface providing a seat for the conical outer the lead, the front; pari; 0f the thread f is'cut surface of said clamping jaws, and a spring right handed and the back part g is'given a inserted between the pencil body and the left handed thread. guide tube for normally urging the guide 100 tube inwardly relative to the pencil' body,

whereby said conical inner and outer surfaces coact to evenly apply the entire length ofthe roughened surface of `the clamping jaws i against the lead.

2. In a mechanical encil, the combination of a tubular pencil bo y, a slidable guide tube for the lead within the pencil bod resilient clampi 'aws at the outer end o the guide lo tube an aving their inner surface partly provided with a right hand helicoidal groove and partly with a left hand helicoidal groove, said clamping jaws having anouter conical surface extending over a part ofthat length of the 'aws of whichV the inner surface is groove the end ofthe pencil body having a conical inner surface providing a "seat or said conical outer sur ace of the clampin aws, and a spring inserted between the penci body and the guide tube for normally urging the guide tube inwardly relative to the pencil 3? In a mechanical encil, the combination of a tubular pencil bo y forming a lead maazine, a guide tube for the lead slidable wit in the pencil body, resilient clamping jaws at the outer end of .the uide tube and having a rou hened inner sur ace in contact with the lead 1n the tube, said clamping jaws having 3o a conical outer surface extendingaover a part of that length of the jaws of which the inner surface is roughened, the end of the pencil bod being provided with a conical inner sur ace coacting with the conical outer surface of the clampin jaws, a spring inserted between the pencil ody and the guide tube for normally urging the guide tube inwards relative to the pencil body, a guide member surrounding the upper end of the guide tube and being provided with a conically shaped end face sup orting the leads in the lead magazine, an means on said end face providin an entrance for one lead at the time only into the guide tube.

n testimony whereof, I have aiiixed my signature.

CARL scHMm.

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