CH238701A

CH238701A - Device for taking relief photographs.

Info

Publication number: CH238701A
Authority: CH
Inventors: La Reliephographie Socie Bonne
Original assignee: Reliephographie Societe Pour L
Priority date: 1941-06-21
Filing date: 1942-05-27
Publication date: 1945-08-15

Description

Dispositif pour la prise de vues photographiques en relief. L'invenhon a pour objet un dispositif pour la prise de vues photographiques en relief, fonctionnant d'aprös les donnees expo- s6es dans 1e brevet suisse no 228981 pour "Proeedie de prise de vue applicable ä la pho- tographie en relief". Device for taking relief photographs. The subject of the invention is a device for taking photographic shots in relief, operating according to the data set out in Swiss patent No. 228981 for "Shooting method applicable to photography in relief".

Ge procede exige .1e deplacement de la chambre photographique suivant un trajet en arc de cercle, la surface sensible !devant elle- mAme, au cours de ce trajet, osciller autour d'un axe vertical par rapport ä la chambre photograplnque. This method requires the photographic chamber to be moved along an arcuate path, the sensitive surface in front of itself, during this path, oscillating around a vertical axis with respect to the photographic chamber.

0n a d6jä propose, pour assurer la co:nver- gence sur 1e .sujet .dies axes de visee succes- sifs .d'une chambre photograpbique d6placee sur un trajet en arc @de, .cerele, de monter rette chambre ssur un chäsjsis roulant posssM'ant un tourfllon vertikal dont laxe passe par 1e point de visie. It has already been proposed, in order to ensure convergence on the subject of the successive axes of sight of a photographic chamber moved along a circular arc path, to mount this chamber on a frame. bearing having a vertical trunnion whose axis passes through the 1st sight point.

Si rette dispos ition peut etre envieagee pour les distances tres faibles entre 1a cham- bre @et 1e sujet, elle devient d6jä fort encom- brante lorsqu'il s'agit die partraits, par egem- ple, et tont ä fait impraticable Jans 1e ras ,de prises de vues plus eloignees. If this arrangement can be envisioned for the very small distances between the chamber and the subject, it already becomes very cumbersome when it comes to parts, for example, and is quite impracticable in the first place. ras, more distant shots.

Une autre solution co#nsbte evidemmeut ä deplacer la chambre sur un, chemin de roule- ment en arc @de cercle ayant 1e point de visee pour centre, en guidant ladite chambre par les faces courbes de ce chemin de roulement, .convenablement usinees. Mais justement cet usinage necessairement tres precis de sur- faces presentant un rayon de courbure impor- tant (pouvaut atbeindre plusieurs metres) offne des difficultes pratiques qui sont ecar- t6es dans le,diispositif falsant 1'objet de 1'in- vention. Another solution obviously involves moving the chamber on a raceway in an arc of a circle having the aiming point as its center, guiding said chamber by the curved faces of this raceway, suitably machined. But precisely this necessarily very precise machining of surfaces having a large radius of curvature (could reach several meters) presents practical difficulties which are avoided in the device forming the subject of the invention.

Le diepositif pour 1a prise de vues photo- grapIliques en relief faisant 1'objet de l'in- vention uQlis,e un selecteur trame ou ä ele- ments lenti.culaires refringents, place en avant du cliche, dans uu porte-cliche pivotant,ä Fin- t6rieur dune chambre photographique d6pla- c6e suivant un trajet en arc de cercle avec Je sujet pour centre. Ce dispositif est ea.ract,e- ris6 en ce qu'il comporte des galets coniques de g-uidage de la chambre sur son trajet, de diametres inegaux et. d'an gles de conieite egaux, la generatrice commune ä res galets. montes fixes sur un arbre commun, apparte- nant ä. un c6ne dopt Ie sommet coincide avec la, projection verticale du centre de visee de la, ehambre, 1e poi-te-eliehe pivotant par rap- port ä la chambre au cours du deplaeenient, d'ensemble de celle-ei, afin de fester parallele ä 1,ui-meme, la commande de ce pivotement etant obtenue au moven d'un triple parallelo- gramme artietile dopt un des cötes est assu- jetH au baff fixe du dispositif. The device for taking relief photographic shots which is the subject of the invention uses a frame selector or with refracting lenticular elements, placed in front of the plate, in a pivoting plate holder. , ä Inside a photographic chamber moved along an arcuate path with the subject at the centre. This device is ea.ract, e- ris6 in that it comprises conical rollers for g-uidage of the chamber on its path, of unequal diameters and. of equal angles of conieity, the generatrix common to res pebbles. mounted fixed on a common shaft, belonging to ä. a cone adopts the apex coincides with the vertical projection of the center of sight of the chamber, the point pivoting relative to the chamber during the displacement, of the whole of the latter, in order to celebrate parallel to 1,ui itself, the control of this pivoting being obtained by means of a triple parallelogram artietile adopts one of the sides is subject to the fixed baff of the device.

Le d@essin annexe montre, ä title d'exem- ple et tres sch6matiquement, une forme d'exe- cution du dispositif faisant Fobjet de Finven- tion, dans laqueIle les chemins de roulement ont ete choisis courbes, pour reduire leer lar- geur. Dans ce ras, bien entendu, leui@faces courbes ne, participent en rien au guidage de la. chambre photogra.phique. The appended drawing shows, by way of example and very schematically, a form of execution of the device forming the subject of the invention, in which the raceways have been chosen to be curved, to reduce the width of the device. manager. In this ras, of course, leui @ curved faces do not participate in any way to guide the. photographic room.

La fig. 1 est une vue de Profil du dispo- sitif, montrant 1e mode de guidage de la chambre photogra.phique sur son trajet en arc de eerele. fig. 1 is a side view of the device, showing the mode of guidance of the photographic chamber on its arcuate path.

La fig. 2 est une vue en plan, represL'n- tant plus particul.ierement 1e triple pa.ralle- logramme de commande .du porte-cliche. fig. 2 is a plan view, represL'n- tant more particul.ierement 1e triple parallelogram command .du plate carrier.

Dans la fig. 1, an a schematiquement de- signe en 1 la, ehambre photographique et en son porte-eliche oseillant. Cette chambre re- pose sur un bäti 3 roulant sur deux chemins 4 et 5, par 1'intermediaire de galets. In fig. 1, an has schematically designated in 1 there, photographic chamber and in its oseillant holder. This chamber rests on a frame 3 rolling on two paths 4 and 5, via rollers.

Deux galets coniques 6 et 7 sont cales sur un arbre B. Cet arbre eat convenablement sup- port6 ä ses extremites par des eoussinets 9 et 10 du bati 3, dans lesquels il est de prefe- rence r6glable en hauteur, pour a:ssurer 1e ser- rage des ga.lets 6 et 7 contre les chemins de roulement 4 et 5. Two conical rollers 6 and 7 are wedged on a shaft B. This shaft is suitably supported at its ends by bearings 9 and 10 of the frame 3, in which it is preferably adjustable in height, to ensure the tightening of rollers 6 and 7 against raceways 4 and 5.

0n voit que res galetis caniques ont une generatrice commune appartenant ä un cöne dont Je sommet 0 coincide avee la projection vertinale -du eentre de vis6e 0' de-la..ehanibre photographique. Grace a rette disposition, Faxe prolou ge de Farbre 8 passera toujours par 1e point 0, au cours du deplacement de la chambre sur les chemins de roulement 4 et 5, en meme teinps que Faxe de visee de la. chambre photo- gi-aphique passera toujouris par le point 0'. It can be seen that the canical pebbles have a common generatrix belonging to a cone whose vertex 0 coincides with the vertical projection -of the viewing center 0' of the photographic shaft. Thanks to this arrangement, the extended axis of the shaft 8 will always pass through the first point 0, during the movement of the chamber on the rolling paths 4 and 5, at the same time as the aiming axis of the. Photographic chamber will always pass through point 0'.

11 suffit, pour modifier les conditions de r@@glag@e du dispositif de man.iere ä obtenir un eenire de rotat-ion plus proehe ou plus eloigne, de remplacer 1e jeu des galets 6 et 7 par un jeu de :,aalet pr < @s < @ntant un ra.pport de d@ia- metres et nie coriicite -diff@rents. 11 suffices, to modify the conditions of r@@glag@e of the device in such a way as to obtain a closer or more distant rotat-ion sequence, to replace the first set of rollers 6 and 7 by a set of:, aalet pr < @s < @ntant a ratio of d@iameters and nie coriicite -diff@rents.

La fig. 2 iiontre 1e meeanisine de guidage du porte-cliche 2, lui perinettant .d'os.ciller par rapport i i, chambre photographique, au cours du deplacement de rette derniere. Cette oseillat:ion perniet au porte-oliche de rester parallele A, lui-ii@me, au cours du deplace- ment en arc de cercle de la cliambre, condi- tion exi"@(,e potu# la pliotographie directe en relief. fig. 2 iiontre the first guide meeanisine of the plate holder 2, perinettant him .d'os.ciller compared i i, camera, during the displacement of last rette. This osillation allows the oliche holder to remain parallel to A, itself, during the displacement in an arc of a circle of the cliamber, a condition which requires direct lithography in relief .

0n prevoit a eet effet un triple paralle- logramme dont im des cütes esst assujetti, en 11, au baii fixe du dispositif. Les deux tiges 12 qui oscillent en 11 ä, Tune de leurs extre- rnites s'zii-ticuleiit en 13 sur im Plateau por- tant des tourillons 14 de tige s 15 articulees en 16, ä leur autre extremite, sur un palonnier 17 qui tourillonne en 18 sur un pivot fixe au baff 3. Deux tiges 19 paralleles sont arti- culees, par leurs deux extremites, dune Part, sur 1e pa.lonnier 17 et, d'autre Part, sur un palonnier 20 tourillonnant lui-meme sur un pivot 21, egalement fixe au bäti 3, comme an le voit sur la fig. 1. For this purpose, provision is made for a triple parallelogram, one of the sides of which is attached, at 11, to the fixed baii of the device. The two rods 12 which oscillate at 11, one of their ends is articulated at 13 on a plate carrying pins 14 of rods 15 articulated at 16, at their other end, on a spreader bar 17 which swiveled at 18 on a pivot fixed to the baff 3. Two parallel rods 19 are articulated, by their two ends, on the one hand, on the first lifter 17 and, on the other hand, on a lifter 20 swiveling itself on a pivot 21, also fixed to the frame 3, as seen in FIG. 1.

Sur les d eux tiges 19 coulisse un troi- sieme palonnier 22, @dont ]es chapes d'articu- lation 23 sont susceptibles d'etre bloquees en un point quelconque de la longueur des tiges 19, au. moyen d'un .dispositif de serrage dont 1e bouton de mana:uvre est designe en 24. Le palonnier 22 Porte en son centre un pivot 25. On the two rods 19 slides a third lifter 22, @dont] the articulation yokes 23 are capable of being blocked at any point along the length of the rods 19, at. means of a clamping device whose first maneuver button is designated at 24. The lifter 22 carries a pivot 25 at its center.

Les pivots 18, 25 et 21. sont en ligne avec 1'arbre 8, et 1e plan vertical contenant les axes de ees trois pivots et celui de Farbre 8 contient egale@ment les points 0 et 0'. The pivots 18, 25 and 21 are in line with the shaft 8, and the first vertical plane containing the axes of these three pivots and that of the shaft 8 also contains the points 0 and 0'.

0n a represente en traits pleins, da.ns la fig. 2, la poeition des organes lorsque la ehambre photographique 2 se trouve au milieu de sa course-, nur les chemins de roulement 4 et 5. 0n a monträ en traits mixten la posi- tion de Ges organes ä l'une des extremites de cette course. On voit qu'au cours du d6place- ment de 1a chambre, 1-e palonnier 22, et par consequent 1e porte-cliche 2, qui est solidake @du pivot 25, reste parallele ä lui-meme, ce qu'on se proposait d'obtenir. 0n has represented in solid lines, da.ns the fig. 2, the position of the organs when the photographic chamber 2 is in the middle of its travel, on the rolling paths 4 and 5. It has been shown in mixed lines the position of the organs at one of the ends of this race. It can be seen that during the movement of the chamber, the spreader bar 22, and consequently the plate carrier 2, which is firmly attached to the pivot 25, remains parallel to itself, which was proposed. to get.

Pour proceder ä la mise au point nur verre depoli qui precede, generalement, la prise ,d'une photographie en relief, an debloque los chapes ä serrage 23, et 1e palonnier 22, en train6 alors par son pivot 25, coulisse 1e long des tiges 19 suivant les impulsions donnees au corpe arriere de 1a ch.axnbre photographi- que sous Faction des dispositifs de, mise au point habituell. In order to focus on frosted glass, which generally precedes the taking of a photograph in relief, the clamping yokes 23 are released, and the spreader bar 22, then in motion by its pivot 25, slides along the rods 19 following the impulses given to the rear body of the photographic ch.axnbre under the action of the usual focusing devices.

0n voit qu'on realise aiusi un, dispositif pour .1a prise de vues photographiques en re- lief, suscept.ble d'etre min au point ä une ,distance quelconque, et de @däcrire un arc de cercle autour d'un axe vertioal situe ä cette dhstance, sann que son encombrement en lou- gueur depasse pratiquement celui de la cham- bre photographique proprement dite, ce dis- po@siUf ne comportant aucun organe d'usinage difficile et par consequent onereux. We see that we are thus realizing a device for taking photographic shots in relief, capable of being in focus at any distance, and of describing an arc of a circle around an axis. vertioal located at this dhstance, without its bulk in length practically exceeding that of the photographic chamber proper, this device not comprising any difficult and therefore expensive machining member.

Les moyens @de miss en mouvement du bäti roulant 3 portant .1a chambre photogra- phique sont quelconques et n'ont ni ete de- crits ni representes. The means @ to set the moving frame 3 carrying the photographic chamber in motion are arbitrary and have neither been described nor shown.

Claims

CLAIM Device for taking relief photographic shots, using a frame selector or with refracting lenticular elements, placed in front of the Gliche, in a pivoting plate holder inside a photographic chamber moved along a path in an arc of a circle: with the subject as its center, characterized in that it comprises conical rollers for guiding the chamber on its path, of unequal diameters and of equal angles of conicity, the common generatrix With its rollers, mounted fixed on a common shaft, belonging to a cone, its apex coincides with the vertical projection of the center of the chamber's elevation, the plate holder pivoting with respect to the chamber, during movement. displacement of the cell as a whole, in order to remain parallel to itself, the control of this pivoting being obtained by means of a triangular articulated parallelogram, one of the sides of which is attached to the frame fixed JU device. SUB-CLAIMS: 1. Device according to claim, characterized in that ID="0003.0274" WI="3" HE="4" LX="1397" LY="904"> the first triele parallelogram comprises a between two of the parallel rods, this lifter being capable of being blocked, at will, by its two ends, at any point of the lengths of the rods, said lifter carrying in its center a vertical pivot of which is secured to the first plate holder.

2. Device according to claim and sub-claim 1, characterized in that the fixed points .de spigot nur the pho@ographic chamber of the spreaders of! pivot of the plate holder are located in a common vertical plane which also contains the top of the ebony generated by the generatrix of the conical rollers and the center of the viewfinder of the photographic chamber.