BE358531A

BE358531A -

Info

Publication number: BE358531A
Authority: BE

Description

       

   <Desc/Clms Page number 1> 
 



  "Perfectionnements dans les appareils d'agrandissement." 
L'objet de la présente invention consiste ,à pré- voir un nouveau type d'appareil d'agrandissement notam- ment un appareil conçu de manière à permettre son assem- blage avec un appareil photographique au moyen duquel l'i- mage à agrandir est photographiée.   L'appareil   comporte une 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 chambre des lampes/un Ou ouille ût des moyens par lesquels l'appareil photographique peut G1ire relié avec la chambre des lampes et le chapeau, une paroi de 
 EMI2.2 
 l'appareil photographique étant amovible de k3ul:tu- que l'image peut tre transmise de la lentille à une plaqua sensible maintenue par le chapeau. 



   La chambre des lampes et le chapeau sont de 
 EMI2.3 
 préférence montés sur un chas Mis, ce châssis étant pour- vu d'une partie intermédiaire jazz support destinera rece- voir l'appareil photographique et l'appareil photogra- phique étant pourvu d'un prisme au moyen auquel une ima- ge positive maintenue clans la rilambre aes lampes est re- que en projection agrandie et renversée sur la plaque sensible. 



   D'autres détails de   l'invention   seront mis en évidence ci-après.L'invention est d écrite   ci-dessous   avec référence aux dessins annexés. 
 EMI2.4 
 



  La ti.l est une vue en plan avec coupe par- tielle de l'appareil,cette coupe étant réalisme suivant 
 EMI2.5 
 la ligne 1-1 de la fig.:;" La-fig.2 est une vue en élévation avec coupe partielle de l'appareil,cette coupe étant réalisée sui- vaut la ligne 2-2 de la :cil .1. 



  La fig .5 est une vue de profil de la chambre des lampes indiquant les moyens de fixation de l'image. 



  Référant aux essins, A indique un châssis qui est représenté plus particulièrement en traits interroi- pus à la f .,1. 



  Ce châssis est constitue par un bras 1   proé-   
 EMI2.6 
 minent (visible en élévation à la 1.;. et fixé au cha- peau ou coiffe par n'importe quel moyen appropria tel que des boulons. Un   bras ;   ,disposé à angle droit par rap- port'au bras 1, reçoit et supporte la chambre des lampes O.Un appui 3 est solidaire du bras   .   Le chapeau peut 

 <Desc/Clms Page number 3> 

 être pourvu'd'un appui dépendant 4 et la partie du châs- sis située entre la chambre et le bras peut être pourvue d'un appui 5.

   La partie intermédiaire du châssis est   fora   mée par des bras 6, de faible   longueur,   se projetant ver-   tioalement   et qui peuvent être recouverts de peaux à leur partie intérieure, et à la base de ces bras la partie du- dit châssis est horizontale. 



     .1'appareil   est maintenant adaptepour rece- voir et supporter solidement l'appareil photographique D. 



   La   ohambre   des lampes est pourvue d'un tube 7 en saillie pour   l'orifice   7x de l'image et le support de la lentille de l'appareil photographique représenta en 8 peut pénétrer à l'intérieur de ce châssis tubulaire) un anneau de cuir 9,produisant une fermeture contre la lu- mière,étant disposé entre la boîte de l' appareil photogra- phique et ledit élément 7. un regard de la   lentille   et à l'intérieur de la boite de l'appareil photographique se trouve un prisme 10 maintenu par des éléments 11 de support et des- tiné à projeter l'image à travers une ouverture dans la boîte de   l'appareil   photographique qui est normalement fer- mé au moyen de la plaque amovible 12.

   La plaque 12 peut être pourvue de crochets 13 pour la maintenir en place, un   poussoir   coulissant 14 étant prévu pour la manipulation du   crochet.   



   Afin de conserver l'espace et de permettre une réduction de la chambre des lampes à un velume minimum, les sockets 15 de la lampe sont disposés tout proche du support de l'image et la lentille est protégée des lampes 16 au moyen des écrans courbes 17, Les rayons provenant des deux lampes se coupent en passant par   l'image.   



     :tour   maintenir l'image,la chambre des lampes est pourvue d'une ouverture sur le bord de laquelle est ré- alisé- un léger rebord 18. La feuille de l'image, représentée 

 <Desc/Clms Page number 4> 

 
 EMI4.1 
 en 19 sur la j'ig.l, st p1aç0t; dans l'ouverture de telle manière que son bord s'engage contre le rebord 18. un élé- ment de couverture 20 est alors   place   et maintenu en po- 
 EMI4.2 
 sition au moyen de l'attache Eh à ressert, l'è16wsnt de couverture possédant un rebord u pour s "engager sur la surface extérieure tla la buî1i6 àe la DhaJ1lbre des lampes. 



  Le rebord 18 est réalisé en découpant une vuver"tilll'0 dans 1 a plaque, dont l'ouverture at l éè:celJ1,:>n1j iia± ôr 1 ;:tcr e à celle de la boite de la chambre des   lampes. La   plaque est recourbée en forme de courbe pour se combiner avec 
 EMI4.3 
 la courbure de la boite Je la chambre ass larilpl2b .A:Lnsi l'image est maintenue suivant une courbe par rapport au plan de la lentille. Lorsque l'image est   constituée   par une impression positive photographique il existe une ten- 
 EMI4.4 
 dance habituelle de la réflexion à créer ur) halo sur l'a- e,randissement.

   La courbure du suppurt d.e l'image remédie à cet inconvénient dans la présente   invention   par le lait que des rayons de réflexion provenant   de     l'imago   sont pro- 
 EMI4.5 
 jetés extérieurement tandis qu'en m@me temps 1 ' ii ac qés t   brillamment   éclairée par les lampes et   qu'une   projection adéquate de cette dernière sur la plaque sensible est as- sur ée. 



   La chambre des lampes peut être fermée au moyen d'une plaque 22 pourvue, au-dessus de chaque lampe,d'un grand nombre d'ouverture 23 pour le passage aes rayons calorifiques provenant des lampes. Le courant peut être amené à la lampe par les fils 24 qui peuvent être plagés convenablement dans un conduit 25   tranversant   un   orifice   approprié du fond de la boite de la chambre des lampes. 



   Le chapeau peut être construit de n'importe quelle manière. Dans le cas actuel,ce chapeau présente 
 EMI4.6 
 une forme reotansuLaire et son extrémité intérieure est pourvue d'un   rebord.   3x et un anneau en cuir 26 peut être 

 <Desc/Clms Page number 5> 

 placé entre ce rebord et la boite de l'appareil photogra-   phique.   Ce chapeau est pourvu à son extrémité extérieure d'un rebord 27 auquel est .fixe au moyen des brides 28, un support 29 pour la plaqua sensible. 



   Ce support peut présenter n'importe   quelle   forme telle que par exemple le support au film-pack de la demande de brevet américain 287.385. 



   Sur les dessins il a été représenté à titre d'exemple ,un passage 30 pour la ou les plaques sensibles et un volât coulissant 31. 



   Lorsqu'on le désire,   deux   plaques sensibles peu- vent être placées dans les orifices 30 leurs faoes couver- tes d'émulsion étant disposées vers l'extérieur et dans ce cas le support pourra être pourvu d'un second volet cou- lissant 32. En vue d'une manipulation aisée le support des plaques sensibles pourra être pourvu   d'une   poignée 35. 



   Suivant l'invention la chambre des lampes et le   chapeau.,tous   deux de construction économique, peuvent être combinés avec l'appareil photographique dunt les lentilles et les prismes sont relativement coûteux en sorte que, lorsque l'appareil photographique ne réalise pas sa fono- tion habituelle,   il   peut être utilisé comme élément pri- maire d'un appareil d'agrandissement. L'appareil   @   phique peut être facilement place ou enlevé de sa position et les cavités filetées 34 de la boite de l'appareil pho-   tographique   peuvent recevoir une vas 35 de serrage traver- sant un orifice fileta du fond du châssis A. 



   Lors de la manipulation du dispositif,le cou- rant, est amené aux lampes   16   et l'appareil photographique est plaçé   avec   ces lentilles ouvertes et les plaques 12 fermées. 



   L'image est alors placée en position et le cou- vercle 20 est appliqua pour maintenir cette dernière. Le volet coulissant est alcus enlevé pour découvrir la pla- 

 <Desc/Clms Page number 6> 

 que sensible et   l'exposition   est maintenue pendant tout le temps nécessaire après lequel la glissière est repla- çée. Lorsque la plaque d'agrandissement est très   sensi-   ble et qu'elle demande un très court temps d'exposition, cette exposition pourra être assurée en actionnant le diaphragme de l'appareil photographique.

   Dans l'appareil photographique mentionné dans le brevet américain   255.444   l'exposition est réalisée par la rotation d'une poignée de commande qui amène une. bande sensible en re- gard de la lentille. un tel dispositif a été   représente   en traits interrompus 36 à la fig. 2.



   <Desc / Clms Page number 1>
 



  "Improvements in magnification devices."
The object of the present invention is to provide a new type of magnifying apparatus, in particular apparatus designed so as to allow its assembly with a photographic apparatus by means of which the image to be magnified. is pictured. The device has a

 <Desc / Clms Page number 2>

 
 EMI2.1
 lamp chamber / one of the means by which the camera can be connected with the lamp chamber and the cap, a wall of
 EMI2.2
 the camera being removable from k3ul: the image can be transmitted from the lens to a sensitive plate held by the cap.



   The lamp chamber and the hat are from
 EMI2.3
 preferably mounted on a Mis eye, this frame being provided with an intermediate jazz support part will receive the camera and the camera being provided with a prism by means of which a positive image is maintained In the room of the lamps is seen in enlarged projection and reversed on the sensitive plate.



   Further details of the invention will become apparent below. The invention is described below with reference to the accompanying drawings.
 EMI2.4
 



  The ti.l is a plan view with partial section of the apparatus, this section being realism according to
 EMI2.5
 line 1-1 of fig.:; "La-fig.2 is an elevational view with partial section of the apparatus, this section being taken along line 2-2 of: eyelash .1.



  Fig. 5 is a side view of the lamp chamber indicating the image fixing means.



  Referring to the axles, A indicates a chassis which is represented more particularly in interlocking lines at f., 1.



  This frame is constituted by an arm 1 pro-
 EMI2.6
 minent (visible in elevation at 1.;. and fixed to the cap or cap by any suitable means such as bolts. An arm;, arranged at right angles to arm 1, receives and supports the lamp chamber O. A support 3 is integral with the arm. The cap can

 <Desc / Clms Page number 3>

 be provided with a dependent support 4 and the part of the frame located between the chamber and the arm can be provided with a support 5.

   The intermediate part of the frame is formed by arms 6, of short length, projecting vertically and which can be covered with skins at their interior part, and at the base of these arms the part of said frame is horizontal.



     .The apparatus is now adapted to receive and securely support the camera D.



   The lamp chamber is provided with a protruding tube 7 for the orifice 7x of the image and the support of the lens of the camera represented at 8 can penetrate inside this tubular frame) a ring of leather 9, providing a closure against the light, being disposed between the case of the camera and said element 7. a sight glass of the lens and inside the case of the camera is a prism 10 held by support members 11 and intended to project the image through an opening in the camera case which is normally closed by means of the removable plate 12.

   The plate 12 can be provided with hooks 13 to hold it in place, a sliding pusher 14 being provided for handling the hook.



   In order to conserve space and to allow a reduction of the lamp chamber to a minimum velvet, the sockets 15 of the lamp are placed very close to the image support and the lens is protected from the lamps 16 by means of the curved screens. 17, The rays coming from the two lamps intersect while passing through the image.



     : to maintain the image, the lamp chamber is provided with an opening on the edge of which is made a slight edge 18. The sheet of the image, shown

 <Desc / Clms Page number 4>

 
 EMI4.1
 in 19 on the iig.l, st p1aç0t; in the opening such that its edge engages against the flange 18. a cover element 20 is then placed and held in position.
 EMI4.2
 sition by means of the re-tightened clip Eh, the cover element having a flange u to engage with the outer surface of the bulb holder.



  The rim 18 is produced by cutting a viewer "tilll'0 in 1 a plate, the opening of which has been: celJ1,:> n1j iia ± ôr 1;: tcr e to that of the box of the lamp chamber. The plate is curved in the shape of a curve to combine with
 EMI4.3
 the curvature of the box I the chamber ass larilpl2b .A: Lnsi the image is maintained according to a curve with respect to the plane of the lens. When the image is a positive photographic impression there is a tendency to
 EMI4.4
 usual dance of reflection to create ur) halo on the a- e, randissement.

   The curvature of the image suppurt overcomes this drawback in the present invention by the fact that reflection rays from the imago are pro- duced.
 EMI4.5
 thrown outwards while at the same time the lamps are brilliantly illuminated and adequate projection of the latter on the sensitive plate is ensured.



   The lamp chamber can be closed by means of a plate 22 provided, above each lamp, with a large number of openings 23 for the passage of heat rays from the lamps. Current can be supplied to the lamp through wires 24 which can be suitably bent in a conduit 25 passing through a suitable hole in the bottom of the lamp chamber box.



   The hat can be constructed in any way. In the present case, this hat presents
 EMI4.6
 a reotansuLaire shape and its inner end is provided with a rim. 3x and a 26 leather ring can be

 <Desc / Clms Page number 5>

 placed between this ledge and the box of the camera. This cap is provided at its outer end with a flange 27 to which is fixed by means of the flanges 28, a support 29 for the sensitive plate.



   This support can have any shape such as for example the support for the film-pack of the American patent application 287,385.



   In the drawings it has been shown by way of example, a passage 30 for the sensitive plate (s) and a sliding flap 31.



   When desired, two sensitive plates can be placed in the orifices 30, their emulsion covers being arranged outwards and in this case the support can be provided with a second sliding shutter 32. For easy handling, the support of the sensitive plates may be provided with a handle 35.



   According to the invention the lamp chamber and the cap, both of economical construction, can be combined with the camera as the lenses and prisms are relatively expensive so that when the camera does not realize its function - Usually, it can be used as a primary component of an enlarger. The camera can be easily placed or removed from its position and the threaded cavities 34 of the camera box can receive a clamp 35 through a threaded hole in the bottom of the frame A.



   When handling the device, current is supplied to lamps 16 and the camera is placed with these lenses open and plates 12 closed.



   The image is then placed in position and the cover 20 is applied to hold the latter. The sliding shutter is alcus removed to uncover the ceiling.

 <Desc / Clms Page number 6>

 sensitive and the exposure is maintained for the necessary time after which the slide is replaced. When the enlarging plate is very sensitive and requires a very short exposure time, this exposure can be ensured by actuating the diaphragm of the camera.

   In the camera mentioned in US patent 255,444 the exposure is achieved by the rotation of a control handle which brings a. sensitive strip towards the lens. such a device has been shown in broken lines 36 in FIG. 2.

Claims

R E V E N D I C A T I O N S.

1) Magnifying device for photography, comprising a lamp chamber provided with an opening for the image, a magnifying cap or cap, means at one end of this magnifying cap for supporting a sensitized plate, a frame connecting the cover and the lamp chamber, said frame having.

a support part disposed between the cover and the lamp chamber and a camera removably supported by said part, the lens of the camera being placed opposite the opening of the image of the aforesaid chamber, this photographic apparatus being provided with a movable partition allowing the passage of the image from the lens to said cover and an image support carried by the lamp key chamber.

) An enlarging device for photography, comprising a cap provided with a support for the sensitized plate, a lamp chamber provided with an aperture for the image arranged at right angles to the axis of the image. the cover, means for connecting the lamp chamber and the cover, said means being provided with a separate support <Desc / Clms Page number 7> placed between the dux, and a photographic apparatus having a removable wall, this apparatus being held in a movable manner by said support and comprising a lens disposed opposite, the opening of the imago of the chamber of lamps and a prism facing the lens and said removable wall.

3) an enlarging device for photography, comprising a cover, a lamp chamber arranged perpendicularly, a cover, a frame connecting the head and the lamp chamber and having a support part disposed between the lamps. two and a camera removably supported by said.

part, this camera having a lens communicating with the opening of the image of the lamp chamber and having a prism disposed opposite the cover, the lamp chamber being provided with an opening having a support with rim for the image sheet and means on the cap to keep the plate sensitized.

4) In an enlarging apparatus for photography, a lamp chamber comprising a boot having on its rear face an opening provided with a rim intended to support the sheet of the image, a cover for said opening arranged in so as to keep the sheets of the image against the rim, opposite lamps, arranged in this box in front of said opening with rim, an opening for the image in this boot, a screen protecting said opening of the image against the direct action of the rays of the lamp,

a second box having a lens arranged co-axially with the opening for the image of the lamp chamber, a prism in this box facing the lens, a third box comprising a cap arranged at right angles to the lens and means supported by the cap for <Desc / Clms Page number 8> maintain a sensitized plaque.

5) In an enlarging apparatus for photography, an assembly comprising a photographic apparatus provided with a prism and a lens, the apparatus having a movable wall, a frame, a lamp chamber supported by the frame and having an image suppurt, a cover supported by the frame and disposed at right angles to the lamp chamber and a frame supporting and joining the head and the lamp chamber, the frame having a support portion disposed between the lamp chamber and the cap and intended to receive the camera.

6) An enlarging apparatus for photography, comprising a support for a sensitized plate, a cap, a lens, illumination means; 6 and a support for a flexible image to be enlarged, said support having a curvature relative to the plane of the lens.

7) An enlarging apparatus comprising a support for a sensitized plate, a cap, a lens, illumination means and a support for a flexible image to be enlarged. Said support being arranged so as to receive the rays of a light source and comprising means for directly reflecting the rays from the image to the lens.

8) An enlarging apparatus for photography comprising a cap, means suppurtured by this cap to hold a sensitized plate, a lamp chamber having an opening for the image, an image support arranged at the rear of the plate. this opening, lighting elements arranged between the opening and the image support, a frame connecting the cover and the lamp chamber and assembling the latter, and means including said frame , to support a camera arranged such that its lens <Desc / Clms Page number 9> is placed opposite the opening of the image and a perforated partition of this device is placed opposite. of the headdress.

9) In an enlarging apparatus for photography, a support for an image sheet, lighting means, a cap and a photographic apparatus, arranged to be mounted in a removable manner and the lens of which is disposed opposite, to the support for the image, the case of the camera being provided with an image outlet and a removable cover and intended to prevent the entry of light, as described and provided above * 10) In an enlarging apparatus for photography a cap having means for supporting a sensitized plate, this cap being combined with a support for an image sheet, with lighting means,

with a support disposed between the image and the cap and with a camera fitted with said cap and the image support so as to be held by said support, the lens of this camera being positioned facing the support for the image, the box of the camera being provided with an outlet opening for the image. said opening being located opposite the cover, and a removable cover to protect the eye. camera output riflae.