CH253030A

CH253030A - Machine for sharpening and sharpening a lead carried by a mechanical pencil.

Info

Publication number: CH253030A
Authority: CH
Inventors: Suisse De Crayons Car Fabrique
Original assignee: Caran D Ache Crayons
Priority date: 1946-04-01
Filing date: 1946-04-01
Publication date: 1948-02-15

Description

Machine pour tailler et appointir une mime portee par un porte-mine. Machine for cutting and honing a mime carried by a mechanical pencil.

Il existe actuellemeut des ma.chines pour tailler les crayons prevues pour eire fixees rigidement sur une table par exemple. Cer taines de ces machines comportent im bäti presentant ;des: paliers Jans, lesquels est pi vote un organe rotatif portant ä Fune de, se:s extreinites une manivelle. Cet omgane rotatif Porte deux organes de taille constituee par des fraises disposees dans un meme plan dia inet:ral, leurs axes de ratation formant toute fois um angle a.vee faxe de rotation de 1'or gane rotatif. A Tune des .extremites de cha que fra.ise est fixe un pignon engrenant avec une couronne soli,daire--du bäti de 1a machine. Dnfin, 1'organe rotatif presente un pereage axial permettant d'introduire un Crayon. Ces machines sont appreciees des usa.gers. mass ne permettent pa-s d'appointir une raine por tee par un porte-mine. There are currently ma.chines for sharpening pencils designed to be rigidly fixed on a table, for example. Some of these machines have im frame having: Jans bearings, which is pi vote a rotating member carrying to Fune, its: s extreinites a crank. This rotary omgane carries two organs of size constituted by strawberries arranged in the same plane dia inet: ral, their axes of ratation forming any time um angle a.vee fax of rotation of the rotary 1'or gane. At one of the .extremities of each fra.ise is fixed a pinion meshing with a solid crown, daire--of the frame of the machine. Dnfin, the rotary member has an axial bore allowing the introduction of a pencil. These machines are appreciated by users. mass do not allow to appoint a groove por tee by a mechanical pencil.

La pre=ente invention a pour objet une ma.chine pour tailler et appointir une raine portee par un porte-mine. Cette ma:chine comporte ä 1'insta.r des machines pour tailler les crayon:s, un orga.ne rotatif tournant dans des paliers amenages @dans un bäti et porta.nt ä Fune de ses extremites une manivelle, son a.utre extremite presentant un perQage axial, cet organe rota.tif portant deux organes de taille rotatifs disposes da.ns un meme plan diametral et dont les axes de rotation for inent tin angle avec 1'ax.e de 1'organe rotatif. ce:s organes (de tailile porbant ä 1'un e de leurs extremites un pibmon engrenant avec une couronne solidaire du. bäti de 1a, machine. The pre = ente invention relates to a ma.chine to cut and appoint a groove carried by a mechanical pencil. This ma: chine has 1'insta.r machines for sharpening the pencil: s, a rotary organ rotating in bearings arranged @ in a frame and porta.nt at one of its ends a crank, its other extremity presenting an axial perQage, this rota.tif member carrying two rotating size members arranged da.ns the same diametral plane and whose axes of rotation for inent tin angle with 1'ax.e of the rotary member. these bodies (of size porbant at one e of their ends a pibmon meshing with a crown integral with the frame of the machine.

Cette machine se distingue toutefois des machines connues et destinees ä tailler des crayons, par le fait que les organes de taille sont constitues par des meines abrasives por t6es chacune- par un arbre articule sur 1'or gane rotatif suivantun axe p-erpendiculaire au dit plan diametral, et situe ä proximite du pi gnon, et par 1e fait que chaeun d.es,dits arbres est soumis ä une aetion elastique tendant ä les faire os:ciller sur leur articulation en :di rection 1'un de 1'autre. This machine differs, however, from known machines intended for sharpening pencils, in that the cutting members are constituted by abrasive mills each carried by a shaft articulated on the rotary organ following an axis perpendicular to said diametral plane, and located close to the pinion, and by the fact that each of said shafts is subjected to an elastic action tending to make them bone: flicker on their articulation in: direction of one another .

Le dessin annexe montre, schematiquement et ä titre d'exemple, une forme d'execution de la m-achirne objet de 1'invention. The appended drawing shows, schematically and by way of example, one form of execution of the machine which is the subject of the invention.

La fig. 1 en est une vue en eoupe axiale. La fig. 2 en est une vue die face avec Parties arrachees. fig. 1 is an axial sectional view. fig. 2 is a die front view with parts cut away.

La fig. 3 est une vue en coupe d'un 4 ta.il. fig. 3 is a sectional view of a 4 ta.il.

Drans la forme, @d'.execution repres:eutee, la maehine comporte un bäti 1 destine ä etre fixe sur une ta.ble, par exemple. Ce bäti pre sente deux paliers 2 et 3 dann l.esqu els tour nent les extremitäs dun organe rotatif 4. Ce dernier port-e ä Fune de ses extremites un.e manivelle 5 et presente ä son autre extremite , un perqage axial 17. Deux organes de taille disposes dans -um meme plan diametral sont constitues chacun parune m@eule abrasive 6. Ces meules .sont fixees ehatune sur un arbre 7 por tant ä Tune de ses extremites un pignon d'en- i trainement 10 engrena-nt iaveic une couronne 8 ä denture interieure, fixee au bäti 1. Cha- In the form, @d'.execution repre: eutee, the maehine comprises a frame 1 intended to be fixed on a table, for example. This frame has two bearings 2 and 3 in which they rotate the ends of a rotary member 4. The latter carries at one of its ends a crank 5 and has at its other end an axial bore 17. Two pruning members arranged in the same diametral plane are each constituted by an abrasive wheel 6. These grinding wheels are fixed on a shaft 7 carrying at one of its ends a drive pinion 10 engrena-nt with a ring gear 8 with internal teeth, fixed to the frame 1. Each

quo arbre 7 est articule sur 1'organe rotatif 4, par 1'intermediaire d'un axe 9 situe ä proximite du pignon 10 et dispose perpendi culairement au plan diametral contenant les axes de rotation des meines abrasives 6. L'ex tremit6 libre @de @chaque iarbre 7 est guidee dans un logament 11 amenag6 dann 1'organe rotatif, et est soumise ä 1'action d'un ressort 12 tendant ä faire osciller, sur leur axe 9, lesdits arbres en direction Funde 1'autre. la machine est encore munie .d'un support 13 des.tine ä porter et guiidem 1e porte-mine pen dant 1'op,eration de tai'lle. Ce support est dis pos6 sur la face anterieure 14 de la. machine, apposee ä Gelle sur laquele se trouve la ma nivelle 5. Il est Monte sur un pivot 15 soli daire du bäti 1 die la machine et presente un guide 16 eompartant une ouverture hexa gonale dopt les sections transversales eorrres pondent ä Gelles du porte-mine. quo shaft 7 is articulated on the rotating member 4, via a shaft 9 located near the pinion 10 and arranged perpendicularly to the diametrical plane containing the axes of rotation of the abrasive grinders 6. The free ex tremit6 @ of each iarbor 7 is guided in a housing 11 arranged in the rotary member, and is subjected to the action of a spring 12 tending to cause the said shafts to oscillate on their axis 9 in the direction of each other. the machine is further provided with a support 13 for carrying and guiding the mechanical pencil during the cutting operation. This support is disposed pos6 on the front face 14 of the. machine, affixed to Gelle on which the my level 5 is located. mine.

Le lonationnement .de 1a machine decrite en reference au :dessin sch@matique annexe ä titre d'exemple est 1e suivant: Pour tailler la Mine d'un porte-mine, il suffit d'intro d-Lüre la Pointe effilee de celuiroi dass le gnide 16 place en Position Je seTvice (Posi tion representee ä la fig. 1) pour laquelle ce guide est situe dann la Prolongation du per gage axial 17 de 1'organe rotati:f, et @d'intro duire entre les meines 6 la Mine emex@geant du parte-.mine. En actiodnant la manivelle 5, 1'usager provoque la rotation des meudes 6 sur elles-memes, dune Part, et autour du porte-mine, d'autre .Part, c6 dernier kamt re tenu kontre un deplaicement angulaire par 1e guide 16. Los meuIes 6 usent,donc 1'extremite de la mime et l' apponntiss ient, ;mr, grä.ce ä 1'a,etion .des ressorts 12, 6lles sont maintenues constamment appliquees Sur la Mine. Apres quelques tours de manivelle, une Pointe co, nique effilee est obtenue. The layout of the machine described with reference to the attached schematic drawing as an example is as follows: the gnide 16 places in Position I seTvice (Posi tion represented in fig. 1) for which this guide is located in the Extension of the axial per gage 17 of the rotati organ: f, and @ to introduce between the mines 6 the Mine emex@geant of the parte-.mine. By actiodnant the crank 5, the user causes the rotation of the meudes 6 on themselves, on the one hand, and around the mechanical pencil, on the other hand, c6 last kamt held against an angular displacement by the first guide 16. The millstones 6 wear, therefore the extremity of the mime and the apponntiss ient,; mr, thanks to the action of the springs 12, they are kept constantly applied to the mine. After a few turns of the crank, a tapered co,nic tip is obtained.

En faisant osciller le Support 13 zur Bon pivot 15, 1'usager peut amener Sur 1e prolon gement du per@age axial 17 un guide 19 prbsentant en coupe transversale une section cireulaire. Ca guide 19 permet Bone la rota tion du porte-mine Sur lui-meme, de Borte quo celui-ci est entrain6 dann la ratation de By oscillating the Support 13 on the Bon pivot 15, the user can bring On the first extension of the axial per@age 17 a guide 19 presenting in cross section a circular section. This guide 19 allows Bone the rotation of the mechanical pencil On itself, from Borte that it is involved in the failure

1'organe rotatif. Il s'ensüit que la Mine tourne ave.c les meules 6 suivant laxe die 1'argane rotatif, de Borte qu'il ne se produit pa:s de deplacement aniguiliaire relatif entre les meu les 6 et la Mine engagee entre elles. En con sAquence, apAs quelques- tou rs de manivelle, la Mine est taillee en forme de, coin syme trique et pr sente une arete situee @dans un plan diametral ä 1'instar d'un tournevis. Pour faeiliter encore 1a rotation du Porte Mine surr lui-meme, 1e guide 19 est constitue par une .douille,coulissant dans un palier 20 (fig. 3). Lette id'ouille est s-oumise ä 1'action d'un ressort 21 tendant ä appliquer sa face frontale 22 contre l'extremite ,d@e 1'organe ro tatif 4. Ainsi, @ce dernier entmine, par frotte ment, la douille 20 Jans. sa. rotation. Il s'en suit quo 1'usager est assure quo 1e porte-mine tourne bien ä 1a meme vitesse quo forgane rotatif et qu'il ne se produit pas,de d6place ment augulaire entre les meules et la Mine. the rotary member. It follows that the Mine rotates with the millstones 6 following the axis of the rotary argan, from Borte that there is no relative aniguiliary displacement between the millstones 6 and the Mine engaged between them. Consequently, after a few turns of the crank, the Mine is cut in the shape of a symmetrical wedge and presents an edge located in a diametral plane like a screwdriver. To further facilitate the rotation of the Mine Holder on itself, the first guide 19 is constituted by a socket, sliding in a bearing 20 (FIG. 3). This id'ouille is subjected to the action of a spring 21 tending to apply its front face 22 against the end of the rotary member 4. Thus, the latter begins, by rubbing, the socket 20 Jans. her. spin. It follows that the user is assured that the mechanical pencil does turn at the same speed as the rotary member and that there is no augular displacement between the wheels and the mine.

Enfin, en retirant 1'un des, ressorts 12 agiesant sur 1'un des, arbres 7, fusager a 1a Tossibilite,de tailler 1a. Mine en biseau, puis qu'elle n'est alors attaquee quo par une Beule des meules 6. Lette tadle est, par exemple, tres appreeiee pour les mines .de compa3. Finally, by withdrawing one of the springs 12 acting on one of the shafts 7, it is possible to cut it. Beveled mine, then it is then only attacked by a Beule des meules 6. Lette tadle is, for example, very appreciated for mines .de compa3.

Une forme,d'execution ide la machine ob jet die 1'invention a ete decrite ici en Afe rence au dessim annexe, Mais il est evident quo los divers Organes decrits peuvent sann autre eire rem#laces par leurs equivalents. A form of execution of the machine object of the invention has been described here with reference to the appended drawing, but it is obvious that the various organs described can without any other be replaced by their equivalents.

0n pourrait, par exemple, -prevoir un guide 19 constitue par un simple per@age de seotion circulaire. Des butees ou des verrous peuvent eire prevus pour fixer los positioncs de Service rdu Support oscillant 13. Les or games de taillie peuvent etre constitues par des meules, rdes rouleaux recouverts de Pa pier @d'ämeri o11 de teile .d'emeri, ou tout nutre Organe de taille travaillant par abrasion. 0n could, for example, -prevoir a guide 19 is a simple per @ age of circular seotion. Stops or locks can be provided to fix the Service positions of the Oscillating Support 13. all neutral Cutting organ working by abrasion.

Claims

CLAIM Machine for cutting and honing a mine carried by a mechanical pencil and which has a rotary member rotating in the bearings arranged in a frame and carrying

One of its ends has a crank, its other end having an axial pergage. cei: rota.tif organ p @ oxtant two organs, of rotary tadle arranged: es @ in the same diametral plane and, whose axes of: rotation form an angle with fax of rotation of 1'orga.ne rotat.if, these pruning organs carrying at one of their ends a gear meshing with a crown integral with the frame of the machine, characterized by the fact that the pruning organs are made up of organs working by abrasio: n doors: each: cun by an articulated a.rbre On the rotary member along an axis perpendicular to said diametral plane and located ä, p.roximite said pinion, and by the first fact that each: of, said trees: is subjected to wie a: cti .on elastic tending to make them oscillate on their @articulation towards 1'une 1'autre. 1. Machine according to claim fa, charac terized by the first fact that e@lle: co: carries a guide presenting a pergago located in the extension of the pergage of the ro: tative body and from tin6 a, receive the 1st mechanical pencil.

2. Machine according to claim and sub-claim 1, characterized by the fact that said guide is carried by a stiff support.

3. Maehine according to claim and sub-revendioations 1 and 2, ca @ racterisee pa.r 1st fact that -ladit Oscillating Support eomporte two prese guides: ntant chaeun a pergage and louse va.nt be brought alternately in the prolongation of the axial perga@ge <B>of</B> the rotatable organ.

4. Machine according to claim and the sub-revendioation: s 1 to 3,: characterized by the first fa.it that 1 of: these pergages has, in cross section, a wax section.

5. Ma: ehine is) lon 1.a claim and under, claims 1 to 4, characterized by the fact that the first second of these pergages p.resente, in cross section, a polygonal section in the first purpose of prohibiting any rotation of the mechanical pencil.