Патент USA US2412265код для вставки
Dec. 10, 119%.r _ v H. s. HAssELQUlsT „ 2,412,265 _ MECHANICAL PENCIL _ _ È, / l_1. Ñ NÈ VFiled Jan. 19, 1944 l , 2 Sheets-Sher#v l Dec. 10, 1946. y H. s. HASsELQuls-ij ' v2,412,265 MECHANICAL PENCIL _. Filed Jan. 19, 1944 ` 2 slwets-_sheetY 2 INVENToR. 696015.’ ?’assfz n@0/57". _ BY Y Afro/gwn’ Patented Dec. 10„ 1946 2,412,265 UNITED -sTATlaz's PATENT ¿ol-‘FICE 2,412,265 ’ ` MECHANICAL PENCIL Hugo S. Hasselquist, Oak Park, Ill., assignor to v Joseph Dixon Crucible Company,- Jersey City, N. J., a corporation of New Jersey Application January ’19, 1944, Serial N0. 518,825 i0 Claims. (C1. 12o-1s) 1 . , AThis invention relates to mechanical pencils of the propel,- retract type. the clutch and ejector at the extreme end of the The invention has for its salient object to pro vide a pencil that is simple, practical and rugged in construction, comprises a minimum number of Fig. 3 is a transverse sectional elevation .taken substantially on line 3_3 of Fig. 2, looking‘in the parts, is economical to manufacture, efficient in Fig. ‘l is a fragmentary sectional elevation illus`-= operation, and is so constructed as to materially reduce the amount of metal and number of metal ner of assembling the tip and spiral therein); Í - ’ feeding and ejecting positions thereof; . ' direction of the arrows; ` ’f ` trating the `front end of the barrel and the manè. parts required for its manufacture. Fig. 5 is an enlarged transverse-sectional eleva lAnother object of the invention is to provide 10 tion taken'substantially on line 5--5 of Fig."- 2, a pencil of the character described with a new looking in the direction of the arrows; and improved clutch and ejector assembly so Fig. 6 is a transverse sectional elevation taken constructed and so mounted that the clutch will substantially on line 6--6 of Fig. 1, looking 'in-the not become fractured or distorted in use. direction of the arrows; - ‘ ` ‘ Another object of the invention is to provide 15 Fig. 7 is a transverse sectional elevation utaken a clutch and ejector assembly so constructed and substantially on line 1-1 of Fig. 1, looking in' the arranged that the ejector will always be properly direction of the arrows; centered in the clutch. ‘ - v « » Fig. 8 is an elevation, partly in section, ofthe magazine, illustrating the manner of assembling ‘Another objectl of the invention is to provide a' clutch and ejector assembly so constructed and 20 the channel tube in the magazine; -' arranged that the ejector controls the positioning Fig. 9 is a side elevation of the clutch'and of the clutch and prevents rotation thereof with out necessitating coaction between the clutch and Fig. 10 is a top plan View of thestructure shown ejector; channel. ` g k in Fig. 9; and 4 ' Another object of the invention is to provide 25 means for frictionally retarding the retraction‘of > 'ï' ' ' " " ‘» -- " " Fig. 1l is a sectional elevation showing the rear or cap end of the pencil shown in Figs. 1 and 2.4r The invention ‘briefly described consists of na mechanical pencil comprising a barrel and a body novel, enìcient, and easily assembled mounting 30 member which, as illustrated, also consists" of a for the tip in the barrel. magazine having longitudinal grooves in its outer Another object of the invention is to provide periphery for storing leads. The magazine is'ro a novel, eñ'icient, and easily assembled mounting tatab-ly mounted in the barrel but has a cap ‘se for the spiral tube and tip in the front end of the cured thereto at the rear end thereof by means of the clutch. Another object of the invention is to provide a barrel. ' l which the magazine can be rotated. Another object of the invention is to provide C19 CA ` .A spiral tube or a tube having a spiral slot ex a simple and en‘icient spiral tube mounting and a tendingA throughout .the length thereof is ñxedly mounting constructed to frictionally engage and secured at «its front end in a tapered member or retard or brake rotation of the ymagazine or body sleeve which is also used .to expand .the rear end member. ' - . " ` ‘ Another object of the invention is to provide 40 of the tip into frictionally tight engagement with fthe front end of lthe barrel. The rear end ofthe a magazine or body member with a channel mem »spiral .tube has mounted .thereon means such asa ber so mounted therein as to permit a frictional disk or washer and the spiral is stretched between slippage between the magazine and channel mem the ñxed forwardend thereof and the rear end so 45 that the Washer frictionally engages the rear end Further objects of the invention will appear of the magazine or body member. from the following speciñcation taken in con A `clutch tube is mounted in the spiral and is nection with the drawings which form -a part provided with a lug which extends into the spiral of this application and in which ` slot. The clutch tube houses an ejector which Fig. `1 is a longitudinal sectional elevation of 50 projects through a longitudinal slot‘in the clutch a pencil constructed in accordance with the in tube and h-as an elongated rearwardly extending vention, the clutch and ejector -being illustrated por-tion which is disposed in a channel formed in _at the rear end of the barrel or in their initial the channel tube secured in the magazine or body feeding positions; , ` member. The front end of the Vclutch tube is pro. Fig. 2 is a view similar to‘Fig. 1 but illustrating 55 Vvided withy tapered spring` lingers vwhich v are ber. ' - 2,412,265 4. extends through the slot 48,-and a rearwardly ex- t adapted to engage the lead as the lead is held in the clutch and fed thereby. tending elongated portion 55 which, as shown in Figs. 1 and 2, extends into the channel 56 formed in .the channel tube 25. This channel might, if Means is provided in the pencil for positively limiting .the forward movement of the ejector dur ing its ejecting action and also for positively lim iting the forward movement of the clutch. Moreover, special means is also provided for re desired, be formed in the inner wall of the body memberV or magazine 2|. The ejectorean be in serted through the slot 48 after .the clutch tube has been completely fabricated and the lips have tarding the retracted movementJ of 'the clutch been folded inwardly. ~ after the lead has been ejected. Attention is called to the fact that the elongated Further details of the invention will appear l0 >end 55 of the plunger, by reason of its engage-V from the following description. ment in the channel 56, maintains the plunger 53v In the particular embodiment of the invention centered in the clutch tube 45. Moreover, atten illustrated, the pencil comprises a barrel 20 in tion is also called to the fact that the lug 41 does which there is rotatably mounted a body mem not extend through the spiral slot in the tube 30 ber 2| which forms a magazine, the body mem- Y into the channel 56. ' The clutch .tube >53 iskept ber being provided with a plurality of longitudi from rotating by reason of the portions 54 and 55 nally extending grooves or channels 23 in its outer of the ejector engaging the walls'of the slotl 48 periphery for storing leads 22. A cap 24 is fric and r.the channel 56. tionally secured to the rear portion of the maga It will be noted from Èthe showing in Fig. 2 that zine or body member 2| and by rotating the cap 20 the magazine is also rotated. ~ the bend 58 in the ejector engages the liange '32' to limit the -operative orhejecting movement of ' As shown ‘in Fig. 8, the magazine or bodymem ber .2| has secured therein a channeled tube v25. ` The .tube 25 is freely rotatable in the member 2| the ejector. When the bend 58 engages the liange ` 32 the elongated end or .tail 55 of the plunger . with the exception »of the rear «end thereof which 25 rests on the outer surface of the spiral tube -3|), thus preventing the ejectorfrom being forced off is slit at 21 opposite the channel 28 and is ex panded sufliciently in the member 2| to provide a center and against the inside ofthe .clutch tube. ' The forward movement or operative movement of the clutch is limited by means of a Vmember ` friction ñt therein whereby -rotation of the mem ber 2| causes the .tube 25 to rotate. This friction 30 interposed between the front end of the sleeve drive for the channel tube, clutch and ejector pre vents .damage to the pencil from overdrive. 3| and the tip 33. This member consists of an annular ring or sleeve 6U which is rotatably A spiral tube 30 Ior a tube having a spiral slot mounted in the portion 34 of the tip andis pro-> vided with a flange having tapered'resilient ñn 35 gers 6| which frictionallyengag'efthe outer> sur face of the clutch .tube l45'. As vthe clutch tube therein is mounted in the body member and tube 25. The frontend of the «spiral .tube 30 issecured in .any suitable manner in a tapered sleeve 3| hav ing aflange 32. . _ A tip 33 is secured in the front end of the barrel and has a rearwardly extending cylindrical por moves forward into the tip 33, the -lug >41 will engage -the flange and carry the .ring Y6i) which has a limited axial movement forwardly into the tip until the portion 62 engages ythe inner 40 tapered sleeve 3 | , kas shown particularly in Fig. 4, surface of the tapered portion 6.3 ofthe tip is assembled by forcing the vsleeve into the slitted 33. As the ejectorandclutch are retracted, the rear end of the portion 34 of the tip, thus forcing tion 34,having inwardly extending slits 35. The this'portion of the tip laterally into tight grip ping engagement with the inner wall 36 of the forward end of the barrel 20. Thus Vthe forward end of the tub 3.0 and the rear end of the .tap 33 are eiîectively assembled in .the forward end of the’barrel. » ` The open rear end of the spiral .tube 30 has , mounted thereon va disk or washer 38 having a D-shaped opening 39 therein, as shown in 6. The washer engages the rear end of the magazine r or body` member 2| and the tube 30 is stretched between the fixed f-ront Vend `thereof _ which is dis posedV in the sleeve 3| and the rear end and the . rearvend of the tube is ñared, as shown :at "4|, The disk or washer 38 is thus held "in frictiona'l engagement with lthe magazine orbody member 2|. ' ' clutch is retarded .initsretractive movementY by the ñngers 6|. DuringV this retractive move ment the ring 60 ,moves backwardly in the por tion 34 of the tip until the rear Vedge thereof abuts against the front edge of the >'sleeve 3|. The axial movement of the ring 60 lis -provided only to the extent necessary toinsure free rota tion of the ring. ' ' l ' ' The cap 24 may be of any desired construction ì butis preferably formed in the manner shown in Fig. Y11 in which the cap „as shown comprises a cap >tube l0 havingY a tapered rear inner surface 1| adapted to receive a removable cap 12; `¿One end of the cap 'l2 has secured therein an eraser 13. The disk 38 overlaps the rear ends of the storage grooves or channels 23, thereby retain-l' ing the leads 22 therein. However, whenithle cap ’ The clutch is illustrated particularly in Figs. 60 is removed, the leads 23 can be lifted and then 9 and 10 and comprises an-elongated'ftube45¿hav ing tapered »or inwardly concaved fingers Y46 Aat the frontend thereof which engage and friction-` ally hold the lead which isfed4 bythe clutch. » - Between 4its ends the «clutch tube-45 is provided ‘Y with a laterally projecting lug 41. The clutch` tube >45 has »a longitudinally extending slot 48 and the rear end of the tube is slit transversely, as shown in Fig. 9 at 449, .and the upper portion «ofthe wall of theltube is bent inwardly, as shown >at 50 and 5|, .these portions forming a stop :5_2 for limitingY the rearward movement of the ejector.v The ejector comprises a'l‘ongitudinally extending elongated .plunger 53 which. iis .disposed inilthe clutch tube 45, a Llaterally'bent portion .54 which withdrawn longitudinally from the »storage chan nels or grooves. ` ' y ' y From »the'foregoing*description it will be evi dent that a simple and practical mechanical pen cil has been designed and that the pencil de scribed is capable -of accomplishing the objects set forth in the outset of the specification. As hereinbefore explained, positive ¿limits for the` forward movement _of vthe ejectory and clutch Yhave been pr-ovidedV and> these parts havevbeen so de signed as to provide «a rugged construction in ' Awhich the ejector isr utilized to actuate the clutch during >its operative and retractive movements. The method of assembling the„spiral andjltip to `the barrel are simple, practical and `effec» 5 afiiaeés tive and permit the assembling of these parts at a minimum cost. Although one specific embodiment of the inven 6 . 6. In a mechanical pencil, a barrel, a member' rotatably mounted therein, a channeled tube mounted therein and having a friction fit adapt tion has been particularly shown and described, ed to permit relative rotational movement be it will be understood that the invention is capable tween the tube and member in which the tube is of modiñcation and that changes in the construc mounted, a spiral tube mounted in said ñrst tube tion and in the arrangement of the various co and ñxed to the barrel, and lead feeding means operating parts may be made without departing in the spiral' having means extending through from the spirit or scope of the invention, as the wall of the spiral tube into the channel expressed in the following claims. 10 whereby rotation of the member in the barrel will What I claim is: cause the lead to be fed through the spira1 tube. l. In a mechanical pencil, a barrel, a tip having 7. In a mechanical pencil, a barrel, a magazine its rear end secured in the front of the barrel, member rotatably mounted in the barrel, a cap a spiral tube in the barrel, and means secured to frictionally engaging the rear portion of the the front end of the spiral tube for securing the 15 magazine member whereby rotation of the cap tip in the barrel. will rotate said magazine, a spiral tube in said 2. In a mechanical pencil, a barrel, a tip hav magazine member fixed to the barrel, said maga ing its rear end secured in the front of the bar zine member having a longitudinal internal chan rel, a spiral tube in the barrel, and tapered nel, and means in said spiral tube arranged to means secured to the front end of the spiral tube 20 coact with the spiral and channel and feed the for securing the tip in the barrel. lead as the cap and magazine are rotated. 3. In a mechanical pencil, a barrel, _a tip hav 8. In a mechanical pencil, a barrel, a, chan ing its rear end secured in the front of the bar neled member rotatable therein, a spiral tube in rel, a spiral tube in the barrel, and means se said member iixed to said barrel, a tip at the cured to the front end of the spiral tube and dis 25 front end of the barrel, said tube having a spiral posed in the rear end of the tip for spreading slot, a clutch in said tube having a lug extending the said end of the tip laterally and securing the into said spiral slot, and means for frictionally tip in the barrel. engaging said clutch and having a portion en 4. In a mechanical pencil, a barrel, a member gageable by said lug to limit the forward move rotatably mounted therein and having a longi 30 ment of the clutch into the tip. tudinal internal channel, a spiral tube mounted 9. In a mechanical pencil, a barrel, a, magazine in said member, means securing the front end `therein rotatable in the barrel, a spiral tube in of said tube to the front end of the barrel, and the magazine ñxed to the barrel, and a disk on means on the rear end of the tube frictionally the rear end of the spiral tube held against rota engaging the member, said tube being held under 35 tion thereon and frictionally engaging the rear tension between the front and rear ends thereof. 5. In a, mechanical pencil, a barrel, a member end of the magazine. 10. A clutch and ejector unit for a mechani cal pencil comprising a clutch tube having an rotatably mounted therein and having a longi tudinal internal channel, a spiral tube mounted elongated slot adjacent the rear end thereof, the in said member, means securing the front end of 40 slot being closed at its ends, and an ejector com said tube to the front end of the barrel, means on prising a plunger insertable through said slot, an the rear end of the tube frictionally engaging the angular portion extending through the slot, and member, and means in said tube coacting with .an elongated portion outside the slot substan said spiral and channel to feed lead through the tially parallel to the plunger in the tube. tube. 45 HUGO S. HASSELQUIST.