CH91346A

CH91346A - Portable cinematographic projection device.

Info

Publication number: CH91346A
Authority: CH
Inventors: Ignatius Atherton Reginald
Original assignee: Ignatius Atherton Reginald
Priority date: 1920-03-11
Filing date: 1920-09-09
Publication date: 1921-11-01

Description

  

  Appareil de projection cinématographique portatif.    L'objet de la présente invention est un  appareil de projection cinématographique por  tatif     comprenant    une boîte divisée en une  série de compartiments séparés de façon à  isoler le dispositif projecteur proprement dit  et le film de la source de lumière et pré  venant de la sorte toute possibilité de con  tact entre le film et la source lumineuse.  



  Les dessins ci-joints représentent, à titre  d'exemple, une forme d'exécution de l'objet  de l'invention.  



       Fig.    1 est une élévation latérale vue du  côté des trois     compartiments    de l'appareil de  projection ; les portes ont été enlevées de  façon à montrer l'arrangement intérieur;       Fig.    2 est une section horizontale, mon  trant les portes en place ;       Fig.    3 est     une    vue de face frontale;       Fig.    4 et 5 montrent les détails de cons  truction d'une monture universelle de la  source de lumière;       Fig.    6 et 7 sont respectivement une élé  vation de côté et de front d'un réflecteur, et         fig.    8 représente des détails d'un volet de  sûreté.  



  Dans les dessins, la caisse rectangulaire 1  est divisée longitudinalement par la cloison 2.       Urt    des     compartiments    ainsi formé est divisé       à,    sort tour en trois     compartiments    3, 4 et 5.  Dans le compartiment avant 3 est placé le  dispositif     projecteur        d    d'un type quelconque.  La lentille de     projection    7 est montée dans  la boîte en ligne avec le dispositif projecteur.  Le volet rotatif 8 est placé sur l'axe 9 et  est relié ait mécanisme (le l'appareil au moyen  d'une commande convenable.  



  Ce volet 8 ainsi que son pivot 9 peuvent  être détachés et placés dans le grand com  partiment 10 quand l'appareil n'est pas eu  usage. Ce même     compartiment    contient     tin     moteur électrique 11 actionnant le mécanisme  de l'appareil de projection au     moyen    de la  courroie de commande 12.  



  Dans le compartiment arrière . 5 une  bobine, 13 reçoit le     filin    au fur et à mesure  qu'il se déroule. Cette     bobine    est montée sur       titi    axe 14 tournant dans     titi    coussinet     fixé         dans la cloison 2. Cet axe, par l'intermédiaire       d'uti    embrayage à friction 16 et d'une chaîne       1.5.    est commandé par l'appareil de projection.  



  Le film 17, après avoir passé par le dis  positif 6, entre dans le passage 18     ménagé          en-dessous    du compartiment central réunis  sant les deux compartiments extrêmes. Le  filin, par les rouleaux 19," convenablement  placés à l'avant et l'arrière     dit    passage, passe  à travers ce dernier pour s'enrouler sur la,  bobine 13 renfermée dans le magasin 20  du compartiment arrière 5 et cela sans sortir  de la caisse 1 ou être exposé à la lampe  contenue dans le compartiment 4. Après que  le film s'est complètement enroulé sur la  bobine, le magasin amovible contenant la  bobine peut être     enlevé_du    compartiment 5  et placé en sécurité.  



  Le condensateur 21 est monté, dans le  compartiment central, sur la cloison     séparant     le compartiment du milieu de celui d'avant,  et en ligne avec la lentille de projection du  compartiment avant. Derrière ce condensateur  21 se trouve la source de lumière 22, montée       sur    un joint universel     (fig.    4 et 5). Sur un  support 23 monté sur la cloison séparant les  compartiments 4 et 5 est- serrée une tige       verticale    24 au moyen d'une vis, de sorte  que l'on peut fixer     cetté    tige à une hauteur       quelconque.    Sur cette tige verticale 24 est  monté un bras 25, pouvant tourner et glisser  verticalement sur la tige 24.

   Le support de  lampe 27     s'engage    entre les jambes de l'extré  mité fourchue 28 de la tige 25 et peut  tourner autour de la vis de serrage 29. Au  moyeu de ce montage la lampe peut être  placée convenablement par rapport au con  densateur 21.  



  Derrière la lampe 22 et sur la cloison  séparant les compartiments 4 et 5 est monté       ait    moyen des pattes 31 un miroir concave  30. Les     fig.    6 et 7 montrent les détails de  ce montage. Les pattes 31 sont     traversées     par les boulons 32. Sur ces boulons et der  rière les pattes se trouvent placés des res  sorts 33, tandis qu'eu avant des pattes se  trouvent les pièces d'espacement 34 mainte-    nues par les écrous -35. On règle la position  du miroir en serrant plus ou moins ces écrous.  



  Le compartiment central 4 est pourvu  d'une porte 36, glissant verticalement entre  les guides 37, de sorte que, lorsque la porte  est fermée, le compartiment 4 est complète  ment isolé des compartiments 3 et 5 et de  leur passage de communication 18.  



  Les guides 37 servent de     charnières    aux  portes 38 et 39, qui ferment respectivement  les     compartiments    3 et 5.  



  La boîte 40 contenant la bobine 41 sur  laquelle est enroulé le film avant son passage  dans le projecteur est montée, quand on se  sert de l'appareil, sur l'extrémité avant de  la boîte 1. Cette boîte 40 est pourvue d'une       ouverture    42,     correspondant    à l'ouverture 43  pratiquée dans la paroi .supérieure de la boîte  1 et donnant accès au compartiment 3.  



  La     fig.    8. montre en détail le volet de  sûreté qui intercepte la lumière dans le cas       où.    la partie du film entre le pignon de com  mande et la fenêtre de projection deviendrait  trop grande. Un organe 44 qui peut     tourner     autour de 45 renferme ladite portion de film.  Si cette- portion devient fi-op     grande,        elle     vient buter contre 44. Alors le volet 47,  suspendu à 44 au moyen des fils 48 est sou  levé à son tour et vient s'interposer entre la  lumière et le film. Ce mouvement peut être  utilisé pour arrêter le moteur 11.



  Portable cinematographic projection device. The object of the present invention is a portable cinematographic projection apparatus comprising a box divided into a series of separate compartments so as to isolate the projector device itself and the film from the light source and thereby prevent any possibility. contact between the film and the light source.



  The accompanying drawings show, by way of example, one embodiment of the object of the invention.



       Fig. 1 is a side elevation seen from the side of the three compartments of the projection apparatus; the doors have been removed to show the interior arrangement; Fig. 2 is a horizontal section, showing the doors in place; Fig. 3 is a front front view; Fig. 4 and 5 show the construction details of a universal mount of the light source; Fig. 6 and 7 are respectively a side and front elevation of a reflector, and fig. 8 shows details of a safety shutter.



  In the drawings, the rectangular body 1 is divided longitudinally by the partition 2. Urt of the compartments thus formed is divided in turn into three compartments 3, 4 and 5. In the front compartment 3 is placed the headlight device d of a any type. The projection lens 7 is mounted in the box in line with the projector device. The rotary shutter 8 is placed on the axis 9 and is connected to a mechanism (the device by means of a suitable control.



  This flap 8 and its pivot 9 can be detached and placed in the large compartment 10 when the device is not in use. This same compartment contains an electric motor 11 actuating the mechanism of the projection apparatus by means of the control belt 12.



  In the rear compartment. 5 a reel, 13 receives the line as it unwinds. This spool is mounted on titi axis 14 rotating in titi pad fixed in the partition 2. This axis, by means of a friction clutch 16 and a chain 1.5. is controlled by the projection device.



  The film 17, after having passed through the positive device 6, enters the passage 18 formed below the central compartment joined together sant the two end compartments. The rope, by the rollers 19, "suitably placed at the front and the rear said passage, passes through the latter to wind up on the spool 13 enclosed in the magazine 20 of the rear compartment 5 and that without leaving case 1 or be exposed to the lamp contained in compartment 4. After the film has completely wound up on the reel, the removable magazine containing the reel can be removed from compartment 5 and placed in safety.



  The capacitor 21 is mounted, in the central compartment, on the partition separating the middle compartment from the front one, and in line with the projection lens of the front compartment. Behind this capacitor 21 is the light source 22, mounted on a universal joint (fig. 4 and 5). On a support 23 mounted on the partition separating the compartments 4 and 5 is clamped a vertical rod 24 by means of a screw, so that this rod can be fixed at any height. On this vertical rod 24 is mounted an arm 25, able to rotate and slide vertically on the rod 24.

   The lamp holder 27 engages between the legs of the forked end 28 of the rod 25 and can rotate around the clamping screw 29. At the hub of this assembly the lamp can be placed suitably relative to the condenser 21 .



  Behind the lamp 22 and on the partition separating the compartments 4 and 5 is mounted by means of the tabs 31 a concave mirror 30. FIGS. 6 and 7 show the details of this assembly. The legs 31 are crossed by the bolts 32. On these bolts and behind the legs are placed springs 33, while before the legs are the spacers 34 held by the nuts -35. The position of the mirror is adjusted by tightening these nuts more or less.



  The central compartment 4 is provided with a door 36, sliding vertically between the guides 37, so that, when the door is closed, the compartment 4 is completely isolated from the compartments 3 and 5 and from their communication passage 18.



  Guides 37 serve as hinges for doors 38 and 39, which respectively close compartments 3 and 5.



  The box 40 containing the reel 41 on which the film is wound before it passes through the projector is mounted, when the apparatus is used, on the front end of the box 1. This box 40 is provided with an opening 42, corresponding to the opening 43 made in the upper wall of the box 1 and giving access to the compartment 3.



  Fig. 8. shows in detail the safety shutter which intercepts the light in the event that. the part of the film between the control gear and the projection window would become too large. A member 44 which can rotate around 45 encloses said portion of film. If this portion becomes large, it abuts against 44. Then the shutter 47, suspended from 44 by means of the wires 48, is lifted in turn and comes between the light and the film. This movement can be used to stop the motor 11.

Claims

CLAIM Portable cinematographic projection apparatus, comprising a box divided into a series of separate compartments so as to isolate the projector device and the film from the light source, and thereby preventing any possibility of contact between the film and the light source.

SUB-CLAIMS: .1 Projection apparatus according to claim, characterized in that the projector device is arranged in a closed compartment, located in the front part of the body, the reel receiving the film after its unwinding, arranged in another closed compartment, placed at] 'rear end of the body and the light source in titi compartment placed between the other two compartments, and by a passage connecting the latter two, passage through which the film passes from the projector device to the receiving reel.

2 Projection apparatus according to claim and sub-claim 1, characterized by a rectangular box having a compartment at one of its sides, extending from the front to the rear, and three other separate compartments placed on the other side, and in which are located the projector device, the light source and the receiver coil. 3 projection apparatus according to revendi cation and sub-claims 1 and 2, characterized in that the reels carrying the film are contained in removable magazines.

4 Projection apparatus according to revendi cation 1, 2 and 3, comprising firing) safety shutter preventing the film from catching fire when the portion of the film between the control pinion) and the projection window becomes too large; and actuated by said portion of film. 5 Projection apparatus according to revendi cation and sub-claims 1, 2 and 3, the middle compartment containing the lamp is provided with a door sliding between two guides serving as hinges to doors respectively closing the con) - partiments front and rear.

6 Projection apparatus according to revendi cation and sub-claims 1, 2 and 3, provided with a capacitor mounted on the partition separating the front and middle compartments, a reflector mounted on the partition separating its on the middle and rear compartments, and a lamp placed between the capacitor and the reflector and whose position can be adjusted.

7 Projection apparatus according to revendi cation and sub-claims 1, 2, 3 and 6, whose lamp is supported at the end of an arm so as to be able to rotate in a vertical dish, said arm being mounted by its other end on a vertical rod and mounted so as to be able to rotate around this rod in a horizontal plane and also be iniî vertically along said rod, the latter being mounted on the dividing wall of the middle and rear compartments.

8 Projection apparatus, according to the coating and sub-claims 1, 2, 3 and 6, in which the reflector is mounted on a series of bolts passing through lugs of the reflector frame, these bolts each carrying a spring behind the legs and plain nut from the front, so that the position called small reflector can be adjusted by tightening the nuts more or less. 9 Projection apparatus according to revendi cation and sub-claims 1, \ ?, 3 and 6, in which the reflector is constituted by titi concave mirror.