CH102771A

CH102771A - Film drive device in cinematographic apparatus.

Info

Publication number: CH102771A
Authority: CH
Inventors: Pathe Cinema Anciens Et Freres
Original assignee: Pathe Cinema
Priority date: 1922-12-01
Filing date: 1923-03-20
Publication date: 1924-01-02
Also published as: GB207772A; AT96115B; DK33450C

Description

Dispositif Wentrainement du film daus les appareils ein#inatographiques. Film training device in ein#inatographic devices.

La Präsente invention a pour objet un di#spositif #d'entrainement -du film dans les appareils #cin#matographiques qui est remar quable en ce qu'il comporte tin cadre rectan gu "- iffe d'entrai , laire portant au moins une or nement de film, une came rotative logge ä Pinthieur de ce #eadre Rablie pour lui im primer un mouvemenf de franslation suivant tine trajectoire rectangulaire flont un dos ,cöt#s est paraWle au film. eame adionnee par Farbre de commanile de l'appareil, cette came a.yant des eWs en forme d'ares de cerele ra-ccord#, entre eux par des arcs de C.erele plus petits, et deux paires de bielleites artiaulAes formant paraWlogrammes arfieu 16s de guidage, Fune des paires Uant reli#e au cadre, et l'autre pivctant aufour de deux points fixes. The subject of the present invention is a device for driving #film in #cine #matographic devices which is remarkable in that it comprises a rectan frame gu "- training iffe , lar wearing at least one film adornment, a rotary cam logge ä Pinthieur of this #eadre Rablie to imprint him a movement of franslation following a rectangular trajectory with a back, the side is parallel to the film. in the form of ares of cerele ra-ccord#, between them by smaller arcs of C.erele, and two pairs of artiaulAes connecting rods forming paraWlograms arfieu 16s of guide, One of the pairs Uant connected# e to the frame, and the other pivoting around two fixed points.

De eette faVon, ]es eWs du eadre resfent eonstamment paralkl es a eux-m#mes, pen dant le mouvementdu eadre. grke ä l'emploi des paralWogrammes arti-eu16"# de guidage, et- le mouvement- de la griffe d'entrainement est compos# de quatre mouvements 6k-men- In this way, the eWs of the frame remain constantly parallel to themselves, during the movement of the frame. grke ä the use of arti-eu16"# guiding paralWograms, and- the movement- of the feed claw is composed# of four 6k-men- movements

faires de translation correspondant ä Vatta,que ,du film par la griffe, au d6pla!cement- donn6 au film, au retra.it de la griffe,- et au retour de la griffe ä sa position initiale, -- Le düssin annex6 montre, ä titre.J'exem ple deux formes d'ex6eutichii de Vobjet de Fin vention: La fig. 1 est-une vue en #I.6vatiou d!-Line forme, Texkution dans Iaquelle la came est faite de fagon ä ne pr6senter qu'un seul trac6; La fig. 2 en est une. vue de profil, Les fig. 3 et 4 montrent les formes que peut affooter suivant le-trac,6!de la. eame, la frajectoire de,la. griffe d'entrainement; La fig. 5 montre en 616vation une autre forme (Vexkution du dispositif suivant Fin vention, dans laquelle on atilise une came a deux trac63 diMrents; Los fig. 6 et 7 indiquent la forme des tra jettoires de la griffe d'entrainement- pour le C,'IS de eette seüonde forme d'exkution. corresponding translation ä Vatta, that, of the film by the claw, to the displacement- given to the film, to the retra.it of the claw,- and to the return of the claw ä its initial position, -- The attached drawing shows, ä title. 1 is a view in #I.6vatiou d!-Line form, the exkution in which the cam is made so ä that it presents only one line; fig. 2 is one. profile view, Figs. 3 and 4 show the shapes that can be affooted according to le-trac,6!de la. eame, the frajectory of,the. feed claw; fig. 5 shows in 616vation another form (Vexkution of the device according to the end of the invention, in which a cam is used has two diMrent trac63; Los fig. 6 and 7 indicate the shape of the feed dog paths - for the C,'IS of this second form of execution.

Dans l'exemple repr6sent#, aux fig. 1 et 2, il, I'iiit6rieur cl'un ca-dre 3, portant une griffe d'entrainement 4" est lo.gAe une came 1. In the example represented, in figs. 1 and 2, it, inside a frame 3, carrying a 4" feed dog is lo.gAe a cam 1.

dite de Tr,#zel, fixte sur un arbre rotatif 29. Le contour de cette ea-me est constitu# par ime sorte de triangle eurviligne, dont les eWs sont trois ares de cerele de niAme rayon inserits dans le eadre, Varc de cercle dont Fanggle au centre est o Uant concentrique ä Yarbre 2-. Les soinmQts du trianggle sont eux mAmes arron#dis au inoyen de trois arges de eerele plus petits, tangents ä venx qui cons tituent los üöt6s du triangle. Le cadre 3 est un s- ystAme de biellettes arti-c-Lil#es for inant parallMogrammes de guidage, consti tu#s par les biel-leites 20# 21# 22, '23 et 24 artieulAes en 5, 6, 7, 8, 9 et 10, les bielles ')0. 22 Atant articulks en 5, 6 sur le üa,dre 3. tandis que celles 21# 23 pivotent sur les axes fixes 9, 10. said of Tr,#zel, fixed on a rotating shaft 29. The contour of this ea-same is constituted by a kind of eurvilinear triangle, whose eWs are three ares of circle of nAme radius inserted in the eadre, Varc of circle whose Fanggle in the center is concentric o Uant ä Yarbre 2-. The caremQts of the triangle are themselves rounded off by means of three smaller arcs, tangent ä venx which constitute the üöt6s of the triangle. The frame 3 is a system of arti-c-Lil#es rods for inant guide parallMograms, consisting of the rods 20# 21# 22, '23 and 24 joints in 5, 6, 7, 8, 9 and 10, the connecting rods ')0. 22 Atant articulks in 5, 6 on the üa,dre 3. while those 21# 23 pivot on the fixed axes 9, 10.

Le cadre 3 est maintenu laUralement tu moyen de deux flasques 11 et 152 Portes par Varbre 2 de chaque eöt#6 !du eaidre. The frame 3 is held sideways by means of two flanges 11 and 152 Doors by the shaft 2 of each eöt#6!

L'arbre 2 Uant anim6 #d'un mouvement fle rotation. la, eame 1 fait exkuter au cadre 3. qua-tre mouvements -de tramslation suivant les directions x-y et x'-y`, le parall61o gramme artieuk obligeant le eadre ä conser ver ses eWs pa.rallMes ä eux-inAmes dan3 tous ses La, trajeetoire, ex6eut#e par la griffe 4# varie l#I0,-Hement de forine suivant langle de la, eame, e'est-A-#dire suivant Vangle o que font entre eux les r,.t.yon3 joionant le cenfre de l'a,rbre '-) de rotation, plae6 au voisinage Tun des sommets du triangle. au milieu des cleux petito, ares de raccordement des denx autres sommeis. Si cet angle ä une valeur queleonque fliffkente de 90', la frajectoire cst un carr# A angles arron-di,7 (fig. 3). Si Fan gle o mesure 90'. la frajectoire est un earH parfait (fig. 4). Z, Le film plaH en A B est attaquA par la griffe 4 qui se met en prise a-vee le film pen dant le mouvement de franslation horizontale d a. suphieure de la frajectoire; il est ensuite entra.inA verfieallement suivant le, -öt6 a-b, puis au troisi#me mouvement (horizontal) b-c la #,riffe s'#carte, du film. Enfin. pen clant la derniAre, partie c-d verticale de la Shaft 2 is animated by a flee rotational movement. the, eame 1 causes the frame 3. to perform four tramslation movements in the directions x-y and x'-y `, the parall61o gram artieuk obliging the head ä to keep its parallMes ä themselves in all its La, trajeetoire, executed by the claw 4# varies the #I0,-Hement of forine according to the angle of the, eame, that is to #say according to the angle where the r,.t.yon3 make between them joining the center of the tree '-) of rotation, placed in the neighborhood Tun of the vertices of the triangle. in the middle of the petito keys, connecting areas of the two other sumis. If this angle ä has any fliffkente value of 90', the trajectory is a square# A rounded angles di,7 (fig. 3). If Fan gle o measures 90'. the fracture is a perfect earH (fig. 4). Z, The film plaH in A B is attacked by claw 4 which engages with the film during the movement of horizontal franslation d a. suphieur of the frajectory; it is then entra.inA verfially following the, -öt6 a-b, then in the third movement (horizontal) b-c the #,riffe s'#carte, from the movie. Finally. while closing the last, vertical part c-d of the

trajee,toire, la. griffe revient ä sa position pri mitive. trajee,tory, the. claw returns ä to its original position.

Dan',# la. forme d'exAeution repr#Sent4 ä la fio% 5. le eadre portanf la griffe Jentrai nement 4 est #constitu6 par deux #e6t6s pa rall#Jes 15, 16 appliqii#s et fix6s sur les deux autres eWs parallMess, N# 18. Dan',# the. form of exAeution repr#Sent4 ä the fio% 5. the eader bearing the Jentrai claw ment 4 is #consist6 of two #e6t6s pa rall#Jes 15, 16 applied and fixed on the two other parallel eWs, N# 18.

Une eame double a deux traces diffhents 13, 14, caPe sur Parbre rotatif 2 est sitiiAv par Fun de ces trac#s. 13. dans le plan des: eWs 15 et 16 et par l'autre, 14, dans le plan des eWs 17 et 18. lp trae,", de eanie 13 en trainant les eWs liorizontaux 1:-) et 16 r1,iiis un mouvement de franslation vertieale, et le, frae;# de eamQ 14 entrainant les e6t#.s vert.i eaux 17 et 18 dans un mouvement de trans lation horizontale. A double eame has two diffhent traces 13, 14, cape on the rotating shaft 2 is located by one of these traces. 13. in the plane of: eWs 15 and 16 and on the other, 14, in the plane of the eWs 17 and 18. lp trae,", de eanie 13 dragging the liorizontal eWs 1:-) and 16 r1,iiis a movement of vertieal franslation, and the, frae;# of eamQ 14 dragging the e6t#.s vert.i waters 17 and 18 in a horizontal translation movement.

Le eadre, est li# it un paralklogramme ar tieuM de guidage comme dans l'exemple pr# e6dent. The frame, is linked it to an ar tieuM guiding paralklogram as in the previous example.

Co syst#me h camedouble permet de don ner aux mouvements liorizontaux de mise en pri-se de la griffe. avee le film et de retrait de la griffe une amplitu-de moindre qu'a,1-ix m.ouvements vertieaux dont Fun eorrespond au düpi.icement clonn# au film. et Fautre au retour verfical de la griffe. On rklise a111S1 les fra. jectoires r(,1)r#sent6es aux filcr. 6 ef 7# ücHe de la fig. 6 correspond,ant ä un fraü# de eame dont Vangle o est di.f6reiit de 90', et eelle de la, fil#1-. 7 üorre.z#,pondant # un angle 0 ## cral a 9 0 II est bien entendu que des modifications cle eonstruction pL-iivent kre apport#es aux forines d'ex#cution ei-flessus Verites. Co system h camdouble allows to give liorizontal movements of gripping of the claw. with the film and withdrawal of the claw an amplitude of less than 1-ix vertical movements whose Fun corresponds to the copy cloned to the film. and Fautre on the vertical return of the claw. We write a111S1 les fra. jectories r(,1)sent to the filcrs. 6 ef 7# ücHe of fig. 6 corresponds, between ä a frü# of eame whose angle o is di.fer6reiit of 90', and eelle of la, wire#1-. 7 üorre.z#,ponding # to an angle 0 ## cral a 9 0 It is understood that constructional modifications may be made to the execution forms of the Verites.

Claims

CLAIM -

Device (training of the rope blanks Jes eiii#,rnato,-raphic devices3, in that it #has a rectan#cular frame carrying at least onet, claw Ttraining of the film, a,rotating cam log ,#e ä End of this eadre #fa'blie to give it an unexpected, of franslation following a fra jectory of which one of the eWs is parallel to axi film. aetiolin4 by the control shaft of the device, this front eam eWs in the form of ams de cerele connected

between them by thinner aros of erele, and two pairs of arti#oul,6es rods forming arti#s guide paralklogrammes, one of the pairs Mant connected to the caidre and the other pi voting around clo, two fixed points. SOLTS-CLAIMS: 1 Film drive device in ein6mato,-raphic devices, according to claim, characterized in that the cam is double and has two diff6- ents tangent, respectively, Fun, to the two sides, Fautre, to the two other eWs parallel to the frame.

2 Device for driving the film in the appa.reils -cin6matographiques according to the claim, as described above and shown in FIGS. 1 and 2 of the attached drawing. 3 Film transport device in cinematographic apparatus according to claim and subclaim 1, as described above above and represents ä fig. 5 of the attached drawing.