CH251694A - Device used to pass a series of images through a projection lantern. - Google Patents
Device used to pass a series of images through a projection lantern.Info
- Publication number
- CH251694A CH251694A CH251694DA CH251694A CH 251694 A CH251694 A CH 251694A CH 251694D A CH251694D A CH 251694DA CH 251694 A CH251694 A CH 251694A
- Authority
- CH
- Switzerland
- Prior art keywords
- images
- electromagnet
- projection
- slide
- series
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B23/00—Devices for changing pictures in viewing apparatus or projectors
- G03B23/02—Devices for changing pictures in viewing apparatus or projectors in which a picture is removed from a stock and returned to the same stock or another one; Magazines therefor
- G03B23/04—Devices for changing pictures in viewing apparatus or projectors in which a picture is removed from a stock and returned to the same stock or another one; Magazines therefor with linear movement
- G03B23/042—Devices for changing pictures in viewing apparatus or projectors in which a picture is removed from a stock and returned to the same stock or another one; Magazines therefor with linear movement whereby the picture is not returned to the same stock after projection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Description
Appareil servant à faire passer une série de clichés dans une lanterne de projection. La présente invention a pour objet un appareil servant à faire passer une série de clichés dans une lanterne de projection.
Le dessin annexé représente, schématique ment et à titre d'exemple, une formè d'exé cution de l'appareil faisant l'objet de la pré sente invention dans deux phases successives.
L'appareil représenté comprend: Un plan incliné <I>w</I> destiné à recevoir les clichés r, une coulisse t dans laquelle s'engagent successi vement en s les clichés devant aboutir dans la coulisse basculante k, se trouvant à l'em placement de projection, une glissière l des tinée à évacuer les clichés hors de l'appareil dans une boîte vide telle que celle utilisée pour le chargement, et un dispositif d'échap pement pour l'avancement des clichés un à un.
Ce dispositif comporte un électro-aimant <I>a</I> avec son noyau<I>b,</I> relié à un circuit élec trique.
Une masse de fer doux c est fixée à une pièce d tenant lieu d'ancre d'échappement par ses crochets f et f' coopérant avec une roue dentée g solidaire d'un tambour à ressort n agissant dans le sens de la flèche -et d'un bras h relié par une articulation à la coulisse bas culante k. Un câble o s'enroule sur le tam bour n .et est attaché au crochet p du pous. soir q.
Fonctionnement de l'appareil décrit: Après avoir reculé le poussoir q comme indiqué sur la fig. 1, les clichés r destinés à la projection sont mis en place sur le plan incliné w. En établissant le circuit électrique,:
l'électro-aimant a attire vers son noyau b la masse de fer doux c fixée à la pièce d et le crochet f' libère une dent, tandis que le cro- cb.et f en retient une autre. Ce premier mou vement fait avancer, vers le haut de la<B>cou-,</B> lisse t, 'les clichés de la distance corres@pon- dant à une demi-épaisseur d'un cliché, ceci par l'intermédiaire du poussoi.- q tiré par le câble o.
D'autre part, le bras h fait basculer la coulisse k dans laquelle sc trouve un cliché précédemment en projection. Cette coulisse k étant ainsi dans l'alignement de la glissière 1, le cliché s'évacue ,sur cette dernière pour aboutir dans une boîte, tandis que le cliché suivant est retenu dans la coulisse t par le rebord supérieur de la coulisse k.
En interrompant le circuit électrique, les ,clichés r avancent de la même distance que précédemment, tandis que la coulisse k re vient dans sa position verticale selon la fig. <B>2</B> et reçoit le liché suivant, lequel s'appuie sur le rebord supérieur de la glissière 1.
L'électro-aimant est relié à un circuit élec trique couplé à la. lampe,de projection, de telle façon que cette dernière s'éteigne ou diminue fortement son intensité d'éclairage lorsque l'électro-aimant fonctionne,
le bobinage du- dit faisant office de résistance. Ceci évite l'éblouïssement lors du changement des cli- ohés en projection et dispense d'intervenir avec un volet s'interposant entre la source lu mineuse et le cliché.
Device used to pass a series of images through a projection lantern. The present invention relates to an apparatus for passing a series of images through a projection lantern.
The appended drawing represents, schematically and by way of example, one embodiment of the apparatus forming the subject of the present invention in two successive phases.
The apparatus shown comprises: An inclined plane <I> w </I> intended to receive the clichés r, a slide t in which the plates engage successively at s, having to end in the tilting slide k, located at l 'projection location, a slide for discharging the images out of the apparatus into an empty box such as that used for loading, and an exhaust device for advancing the images one by one.
This device comprises an electromagnet <I> a </I> with its core <I> b, </I> connected to an electric circuit.
A mass of soft iron c is fixed to a part d serving as an escape anchor by its hooks f and f 'cooperating with a toothed wheel g integral with a spring drum n acting in the direction of the arrow -and an arm h connected by an articulation to the bottom slide k. A cable o is wound up on the drum n. And is attached to the hook p of the push. evening q.
Operation of the appliance described: After moving the push-button q back as shown in fig. 1, the images r intended for projection are placed on the inclined plane w. By establishing the electrical circuit:
the electromagnet a attracts towards its core b the mass of soft iron c fixed to the part d and the hook f 'releases one tooth, while the hook cb.et f retains another. This first movement makes advance, towards the top of the <B> neck-, </B> smooth t, 'the shots of the distance corresponding @ weighing at half the thickness of a plate, this by the' intermediate of the push - q pulled by the cable o.
On the other hand, the arm h switches the slide k in which sc finds a previously projected image. This slide k being thus in alignment with the slide 1, the plate is evacuated, on the latter to end in a box, while the next plate is retained in the slide t by the upper edge of the slide k.
By interrupting the electrical circuit, the images r advance the same distance as before, while the slide k re comes into its vertical position according to FIG. <B> 2 </B> and receives the next liché, which rests on the upper edge of slide 1.
The electromagnet is connected to an electric circuit coupled to the. lamp, projection, so that the latter goes out or greatly reduces its lighting intensity when the electromagnet is working,
the said winding acting as a resistance. This avoids dazzling when changing the projection images and eliminates the need to intervene with a shutter interposed between the light source and the image.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH251694T | 1945-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH251694A true CH251694A (en) | 1947-11-15 |
Family
ID=4468959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH251694D CH251694A (en) | 1945-12-17 | 1945-12-17 | Device used to pass a series of images through a projection lantern. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH251694A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1053214B (en) * | 1956-04-14 | 1959-03-19 | Agfa Ag | Image changing device, especially for still projector |
DE1054732B (en) * | 1954-05-05 | 1959-04-09 | Erich Zillmer | Image changing device for projector or viewer |
DE1205730B (en) * | 1959-04-22 | 1965-11-25 | Kodak Ag | Picture changing device |
EP0037423A1 (en) * | 1979-09-28 | 1981-10-14 | Owen L Lamb | Apparatus for viewing and sorting photographic slide transparencies. |
USRE32371E (en) * | 1979-09-28 | 1987-03-17 | Slide Management Systems, Inc. | Apparatus for viewing and sorting photographic slide transparencies |
-
1945
- 1945-12-17 CH CH251694D patent/CH251694A/en unknown
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1054732B (en) * | 1954-05-05 | 1959-04-09 | Erich Zillmer | Image changing device for projector or viewer |
DE1053214B (en) * | 1956-04-14 | 1959-03-19 | Agfa Ag | Image changing device, especially for still projector |
DE1205730B (en) * | 1959-04-22 | 1965-11-25 | Kodak Ag | Picture changing device |
EP0037423A1 (en) * | 1979-09-28 | 1981-10-14 | Owen L Lamb | Apparatus for viewing and sorting photographic slide transparencies. |
EP0037423A4 (en) * | 1979-09-28 | 1982-01-11 | Owen L Lamb | Apparatus for viewing and sorting photographic slide transparencies. |
USRE32371E (en) * | 1979-09-28 | 1987-03-17 | Slide Management Systems, Inc. | Apparatus for viewing and sorting photographic slide transparencies |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2239379A (en) | Self-focusing and illuminating device for photographic cameras | |
CH251694A (en) | Device used to pass a series of images through a projection lantern. | |
US2261953A (en) | Apparatus for taking pictures | |
US2279443A (en) | Stereoscopic attachment for cameras | |
US2329011A (en) | Photographic flash synchronization equipment | |
US2659267A (en) | Roll film viewer | |
US2317465A (en) | Camera | |
US2321945A (en) | Camera attachment | |
US2149743A (en) | Camera exposure control apparatus | |
US1959596A (en) | Flash-light timing device for cameras | |
US1272635A (en) | Combination illuminating-light and camera. | |
US2644884A (en) | Cam operated target image having an irregular movement | |
US1882303A (en) | Talking motion picture apparatus | |
US2973689A (en) | Apparatus for projecting slides | |
US2525160A (en) | Camera and flash-lamp synchronizing device, including auxiliary shutter | |
US2292893A (en) | Synchronizer | |
JPH05236203A (en) | Free stop mechanism and picture input device using the mechanism | |
US1611843A (en) | Picture-slide-projection apparatus | |
US2263045A (en) | Synchronizer switching device | |
FR2411427A1 (en) | ELECTRIC SHUTTER WITH ELECTROMAGNETIC RELEASE FOR PHOTOGRAPHIC CAMERA | |
US1474342A (en) | Exposure timer | |
US2437553A (en) | Motion-picture film control device | |
GB1205352A (en) | Photoflash lamp firing mechanism | |
SU367991A1 (en) | CHANNEL | |
US2263587A (en) | Projector |