CH261389A

CH261389A - Device for unwinding and winding up a film.

Info

Publication number: CH261389A
Authority: CH
Inventors: Societe D Etudes Et Descombes
Original assignee: Soc Et Et De Realisation Des B
Priority date: 1946-05-04
Filing date: 1947-02-12
Publication date: 1949-05-15

Description

Dispositif pour 1e deroulement et Fenroulement d'un film. La presente invention a pour objet un dis- positif d'encombrement tres reduit, de cons- truction simple et dun emploi particuliere- ment faeile, pour 1e deroulement et Fenroule- ment d'un film en particulier pour Prise de vues ou pour projections. Device for the unwinding and winding of a film. The subject of the present invention is a device of very reduced size, of simple construction and of particular use. - particularly easy, for the unwinding and winding of a film, in particular for taking pictures or for projections.

Ce dispositif est earacterise en ce qu'il comprend une bobine debitrice et une bobine receptrice, disposees suiv ant un meme axe, 1e plan moyen de Fune d'entre elles etant situe dans un plan qui contient au moins Faxe Tun dispositif optique dann lequel passe ce film, et des moyens pour guider ce film au cours de son trajet entre les deux bobines, de ma- niere qu'il subisse une translation laterale fai- sant passer son axe longitudinal du plan moyen de Fune des bobines au plan moyen de 1'autre bobine. This device is characterized in that it comprises a delivery coil and a receiving coil, arranged along the same axis, the first mean plane of one of them being located in a plane which contains at least Faxe Tun optical device in which passes this film, and means for guiding this film during its journey between the two reels, so that it undergoes a lateral translation causing its longitudinal axis to pass from the mean plane of Fune of the reels to the mean plane of 1 another coil.

Au dessin annexe, donne uniquement ä, titre d'exemple: La fig. 1 est une vue de faee dun dispo- sitif selon Finvention, dans 1e aas d'un appa- reil cinematographique de projection avec re- production sonore. In the appended drawing, gives only ä, by way of example: FIG. 1 is a front view of a device according to the invention, in the case of a projection cinematographic apparatus with sound reproduction.

La fig. 2 est une vue de Profil correspon- dante. fig. 2 is a corresponding Profile view.

La fig. 3 est une eoupe verticale, suivant la ligne 3-3 de la fig. 1, mais ä plus grande echelle. fig. 3 is a vertical eoupe, following the line 3-3 of fig. 1, but on a larger scale.

La fig. 4 est une vue en bout du moyeu de la bobine receptrice. fig. 4 is an end view of the take-up spool hub.

Suivant 1'exemple d'execution represente, 1e dispositif comprend un flasque 1. Sur ce flasque est fixe par soudure ou ä Faide de vis, rivets, etc., un palier 2. Ce palier 2 com- prend, dann son alesage interieur 3, deux rou- lements 4, 5 d'axe X-X, dans lesquels tou- rillonne un arbre 6 qui, vers 1'arriere, depasse 1e flasque 1, tandis que, vers Favant, il se prolonge au-delä du roulement 5. Au-delä du roulement arriere 4, sur 1'arbre 6, est fixe, par goupille 7 ou autrement, un Plateau B. Contre ee Plateau 8 prend appui, par 1'inter- m6diaire dune garniture de frietion 9, une poulie de manceuv re 10, entrainee ä partir d'un moteur quelconque approprie par une courroie 11. Cette poulie 10 tourne sur un roulement 12, centre sur 1e moyeu 13, v enu de matiere avec 1e Plateau 8 et elle est Pres see eontre la garniture 9 par un ressort 14. Ce ressort est enfile autour de Farbre 6. 11 prend appui ä Fune de ses extremites sur une bague 15 portee par 1e moyeu 13 et appuyant contre 1e roulement 12 lui-meme appuye RTI ID="0001.0273" WI="7" HE="4" LX="1723" LY="1738"> con- tre la face laterale 16 de la poulie 10.A son autre extremite, 1e ressort Porte contre une butee 17, vissee sur 1'extremite filetee 18 de 1'arbre 6 et bloquee par un contre-ecrou 19. According to the example of execution represented, the device comprises a flange 1. On this flange is fixed by welding or using screws, rivets, etc., a bearing 2. This bearing 2 comprises, in its internal bore 3 , two bearings 4, 5 of axis X-X, in which a shaft 6 is journalled which, towards the rear, projects beyond the flange 1, while, towards the front, it extends beyond the bearing 5. -beyond the rear bearing 4, on the shaft 6, is fixed, by pin 7 or otherwise, a plate B. 10, driven from any suitable motor by a belt 11. This pulley 10 turns on a bearing 12, centered on the hub 13, made in one piece with the Plate 8 and it is close against the lining 9 by a spring 14. This spring is threaded around the shaft 6. 11 bears at one of its ends on a ring 15 carried by the first hub 13 and pressing against the first bearing 12 itself supported RTI ID="0001.0273" WI="7" HE="4" LX="1723" LY="1738"> against the side face 16 of the pulley 10. At its other end, the first spring bears against a stop 17, screwed onto the threaded end 18 of 1 shaft 6 and locked by a lock nut 19.

Sur Fautre extremite de 1'arbre 6, sur la face anterieure du flasque 1, 1'arbre 6 Porte une rondelle goupillee ou un epaulement de butee 20 qui, sous Faction du ressort 14, Porte contre 1e roulement 5. Contre cette butee v ient prendre appui par son moyeu 21 la bo- bine debitrice 22, montee (olle sur Farbre 6. Sur cet arbre est ensuite engage 1e moyeu 23 de la bobirre receptrice 24. La tranehe arriere du moyeu 23 bute contre 1e moyeu 21 de la bobirre debitrice et 1e maintient ainsi dans la Position convenable. La bobirre receptrice 24 est entrainee en rotation sur Farbre 6 par fintermediaire dun organe de butee et d'en- trainement constitue par un levier 25, articu1e autour dun axe 26 et qu'une bille ou autre verrou 27, pousse par un ressort 28, permet, comme connu en soi, de bioquer soit dans 1e prolongement de faxe 6, soit, comme repre- sente, dans une Position ä 90 par rapport ä cet axe. Dans cette Position, ce levier 25 p6ne- tre dans une rainure diametrale 29 du moyeu 23 de la bobirre receptrice. On the other end of the shaft 6, on the front face of the flange 1, the shaft 6 carries a pinned washer or a thrust shoulder 20 which, under the action of the spring 14, bears against the first bearing 5. Against this thrust bearing comes take support by its hub 21 the supply spool 22, mounted (on the shaft 6. On this shaft is then engaged the first hub 23 of the receiving bobirre 24. The rear track of the hub 23 abuts against the first hub 21 of the supply bobbin and thus maintains it in the suitable position.The receiving bobbin 24 is driven in rotation on the shaft 6 by the intermediary of a stop and driving member constituted by a lever 25, articulated around dun axis 26 and that a ball or other lock 27, pushed by a spring 28, makes it possible, as known per se, to lock either in the extension of the axis 6, or, as shown, in a position at 90 with respect to this axis. In this position, this lever 25 enters a diametral groove 29 of the hub 23 of the receiver bobirre.

L'ensemble des deux bobirres : debitrice 22, de laquelle se deroule 1e film 30, et receptrice 24, sur laquelle s'enroule ce film, et des moyens pour 1e supporter susdeerits, est com- pIet6 par des moyens pour guider et entra% ner 1e film 30 entre Ges deux bobirres et les faire passer successivement, par exemple, dann im appareil de projection 31 dun type quelconque connu et devant un lecteur de son 32 egalement de type connu. Les axes opti- ques de Ges dispositifs sont situes dans un plan P-P (fig. 2) parallele au flasque 1 et dispose de maniere ä coincider avec 1e plan moyen de la bobirre receptrice 24. The set of two bobirres: delivery 22, from which the first film 30 unwinds, and receiver 24, on which this film is rolled up, and means for supporting it above, is complete with means for guiding and entering ner the first film 30 between Ges two bobirres and pass them successively, for example, dann im projection device 31 of any known type and in front of a sound player 32 also of known type. The optical axes of these devices are located in a plane P-P (FIG. 2) parallel to the flange 1 and disposed so as to coincide with the mean plane of the receiver bobirre 24.

Les moyens d'entrainement et de guidage du film qui se deroule dann 1e sens des ffi- ehes f2, suivant un trajet abcd... jk (fig. 1) comprennent d'abord, un tambour debiteur 33 cooperant avec im galet Presseur 34 ä le- vier 35. A la sortle du tambour, 1e fim qui se trouve jusqu'en c au droit de la bobirre d6- bitrice 22, est deporte lateralement, en cde, de maniere que son axe longitudinal vienne dans 1e plan P -P precite. Il passe ensuite ä travers 1e dispositif de projection 31. A la sortie de ce dispositif, il forme ime boucle f, f', g; il passe ensuite, en g, entre un Mi- teur 36 et un galet Presseur 37 avec 1e levier 38, puls entre 1e debiteur 36 et 1e filtre me- canique 39 du lecteur de son 32. Il repasse enfin, en j, sur des prolongements du d6bi- teur 33 et du galet 34 et vient s'enrouler, en k, sur la bobirre receptrice 24. Le fonetionnement est 1e suivant: pour charger 1e dispositif, 1e verrou 25 etant efface Jans 1e prolongement de Faxe 6, an place d'abord la bobirre debitrice 22 sur laquelle 1e film 30 est enroule. The means for driving and guiding the film which unwinds in the first direction of the ffi- hes f2, following a path abcd ... jk (fig. 1) firstly comprises a delivery drum 33 cooperating with im pressure roller 34 at lever 35. At the end of the drum, the film which is located as far as c in line with the delivery coil 22, is offset laterally, in cde, so that its longitudinal axis comes into the first plane P - P precite. It then passes through the projection device 31. On leaving this device, it forms a loop f, f', g; it then passes, at g, between a mi- tor 36 and a pressure roller 37 with the first lever 38, pulsing between the first debtor 36 and the first mechanical filter 39 of the sound reader 32. Finally, it passes again, at j, on extensions of the debtor 33 and of the roller 34 and is rolled up, in k, on the receiving bobirre 24. The operation is as follows: to load the first device, the first lock 25 being erased Jans first the debit reel 22 on which the first film 30 is wound.

0n place ensuite sur Faxe 6 la bobirre re- ceptrice 24 et an la verrouille sur Faxe en a rabattant 1e levier 25 dans la rainure 29. 0n deroule ensuite ä la main 1'extremite du film 30, on- lui Fait decrire 1e trajet pre- cis6 plus haut et an fattache au moyeu de la bobirre receptrice 24. The receiving bobbin 24 is then placed on Faxe 6 and locked on Faxe by folding the lever 25 into the groove 29. - cis6 higher and attached to the hub of the receiving bobirre 24.

Le dispositif est des Tors pret ä fonction- ner. La poulie 10 entraine, par 1'embrayage ä friction et limiteur de couple 8, 9, Farbre 6. Celui-ci, par 1e verrou 25, entraIne la bobirre receptrice 24. Le film 30 s'enroule donc sur cette bobirre ä laquelle il est d'ailleurs fourni par 1e debiteur 33 qui fonctionne ä. ia fois pour derouler 1e film de la bobirre _ debitrice 22 et pour 1e fournir ä la bobirre receptrice 21. The device is ready to operate. The pulley 10 drives, through the friction clutch and torque limiter 8, 9, the shaft 6. is also provided by the first debtor 33 which operates ä. both to unwind the film from the supply reel 22 and to supply it to the take-up reel 21.

La bobirre debitrice 22 est folle sur Far bre 6 et tourne entrainee par 1e film 30. Le dechargement de la bobirre receptrice 24 pleine et 1e chargement de la bobirre debi- trice 22 vide s'operent Jans fordre inverse aussi facilement. The delivery bobirre 22 is idle on Far bre 6 and rotates driven by the film 30. The unloading of the full receiving bobirre 24 and the loading of the empty delivery bobirre 22 take place in reverse order as easily.

Ce dispositif presente, comme an 1e voit, de nombreux et importants avantages: la translation laterale du film 30 est re- duite au striet miniinum (Partie cde de son trajet) et peut eire realisee dans les memes conditions de simplicite qu'avec un projec- teur ä bobirres superposees, 1e chargement est extremement fache, aucune erreur n'est possible; il en est de meme du dechargemerit, 1e volume du dispositif est tres reduit, la construction est considerablement sim- plifiee par rapport ä Gelles connues, du Fait notamment que les deux debiteurs d'entree et de sortie peuvent etre confondus en un meme organe commande 33. This device has, as we see, numerous and important advantages: the lateral translation of the film 30 is reduced to the minimum stride (central part of its path) and can be carried out under the same conditions of simplicity as with a project. - superimposed winding machine, the loading is extremely difficult, no error is possible; the same is true of the discharge, the volume of the device is very small, the construction is considerably simplified compared to known Gelles, due in particular to the fact that the two inlet and outlet debtors can be combined into a single control device 33.

0n a suppose, dans 1'exemple decrit, que 1e plan P -P de projection et de reprodue- tion sonore coincide avec 1e plan moyen de la bobirre receptrice 24. Cela pourrait etre 1e contraire, ce plan coineidant avec celui de la bobine debitrice 22. It has been assumed, in the example described, that the plane P -P of projection and sound reproduction coincides with the mean plane of the receiving coil 24. It could be the opposite, this plane coinciding with that of the supply coil. 22.

Bier entendu, 1e film 30 peut etre en- traine par un mecanisine quelconque ä d6rou- lement continu ou intermittent. Of course, the film 30 can be driven by any continuous or intermittent unwinding mechanism.

Le trajet du film entre les deux bobines 22 et 24 peut, naturellement, etre different de celui decrit et dependra du rille du film qui peut etre soit un film cinematographique avec ou sans enregistrement sonore ou un film ä simple enregistrement sonore. The path of the film between the two reels 22 and 24 can, of course, be different from that described and will depend on the role of the film which can be either a cinematographic film with or without sound recording or a film with only sound recording.

Claims

CLAIM Device for the unwinding and unwinding of a film, characterized in that it comprises a supply reel and a take-up reel, arranged along the same axis, the mean plane of one of them being located Jans a plan which contains at least the fax of an optical device Jans which passes this film, and means for guiding this film during its journey between the two reels, so that it undergoes a lateral translation causing its axis to pass longitudinal from the mean plane of one of the coils to the mean plane of the other coil. SUB-CLAIMS 1. Device for unwinding and winding a film according to claim and intended for a cinematographic camera, characterized in that said mean plane of one of the reels is located in the first plane which contains the optical beam. of shooting.

2. Device for rolling and winding a film according to claim and intended for a cinematographic projection apparatus, characterized in that said mean plane of one of the reels is located in the first plane which contains the optical projection beam. .

3. Device for unwinding and rewinding a film according to claim and intended for a sound recording apparatus, characterized in that said mean plane of one of the reels is situated in the plane which contains the optical beam. of the sound recording device.

4. Device for the unwinding and winding of a film according to claim and intended for a sound reproduction apparatus, characterized in that said mean plane of one of the reels is located in the first plane which contains the optical beam of the sound reproduction.

5. Device for the unwinding and winding of a film according to claim, characterized in that the supply spool is mounted loose, against a flange supporting the entire mechanism, on a motor shaft, while the take-up spool also mounted on this shaft is keyed on it and dragged by it.

6. Device for the unwinding and winding of a film according to claim and sub-claim 5, characterized in that the two reels are threaded one after the other on said motor shaft and the take-up reel, which maintains the take-up spool is lifted onto this shaft by a lever mounted on the end of the shaft and which engages in a diametrical groove in the hub of the take-up spool.

7. Device for unwinding and winding a film according to claim and sub-claims 5 and 6, characterized in that the same debtor ensures the drive of the film during unwinding and winding, the film passing twice and in the same direction on the debtor.