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DE385419C - Image changer for projector - Google Patents

Image changer for projector

Info

Publication number
DE385419C
DE385419C DEE28577D DEE0028577D DE385419C DE 385419 C DE385419 C DE 385419C DE E28577 D DEE28577 D DE E28577D DE E0028577 D DEE0028577 D DE E0028577D DE 385419 C DE385419 C DE 385419C
Authority
DE
Germany
Prior art keywords
image
projector
changer
darkening
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEE28577D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ernemann Werke AG
Original Assignee
Ernemann Werke AG
Publication date
Priority to DEE28577D priority Critical patent/DE385419C/en
Application granted granted Critical
Publication of DE385419C publication Critical patent/DE385419C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B23/00Devices for changing pictures in viewing apparatus or projectors
    • G03B23/14Carriers operable to move pictures into, and out of, the projection or viewing position and carrying one or two pictures only in a removable manner also other devices not provided with a stock, e.g. chutes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Description

Die Erfindung betrifft einen Bildwechsler für Bildwerfer mit Vorrichtung zum selbsttätigen Verdunkeln des Bildfeldes beim Bildwechsel und zeichnet sich gegenüber bekannten Einrichtungen durch besondere Einfachheit der Mittel aus, die den Wechsel des Bildrahmens bewirken.The invention relates to an image changer for projector with a device for automatic Darkening of the image field when changing the image and stands out against known ones Facilities characterized by particular simplicity of the means that change the picture frame cause.

Abb. ι zeigt eine Rückansicht mit geöffneter Verdunklervorrichtung: Abb. 2 ist ein ίο Längsschnitt nach Linie i-i der Abb. i, Abb. 3 eine Rückansicht, jedoch mit verschlossener Verdunklungsvorrichtung, Abb. 4 ein Querschnitt nach Linie 3-3 der Abb. 3.Fig. Ι shows a rear view with the darkening device open: Fig. 2 is a ίο longitudinal section along line i-i of Fig. i, Fig. 3 is a rear view, but with the darkening device closed, Fig. 4 a cross section along line 3-3 of Fig. 3.

An dem an sich bekannten Diabilderführungsrahmen sind zwei Führungsschienen b und c befestigt, in denen sich zwei starre Schieber d und e befinden. Ein am Führungsrahmen α angeordneter, um den Drehpunkt/ schwingbarer doppelarmiger Heia0 bei g ist mittels des einen Armes gt mit dem Schieber d bei / verbunden, während der Hebel g„ mittels einer Lenkstange h mit dem Schieber c bei m in Verbindung steht. Der Hebel g2 trägt an seinem Ende eine Gleitrolle i, die in die Bahn des unteren Diarahmens k hineinragt. Beim Herausziehen des unteren Diarahmens aus dem Führungsrahmen trifft die Kante η des Rahmens k auf die Rolle i. In diesem Augenblick erfährt der doppelarmige Hebel g eine Ausschwenkung, durch welche die Schieber d und c nach dem Bildfeld (Pfeile/ in Abb. 1) zu bewegtOn the slide picture guide frame known per se, two guide rails b and c are attached, in which there are two rigid slides d and e . An α on the guide frame disposed, about the fulcrum / swingable double-armed Hela 0 when g is by means of one arm g t to the slider d with / connected while the lever g "by means of a handlebar H with the slider c wherein m is in communication. The lever g 2 carries at its end a roller i which protrudes into the path of the lower slide frame k. When the lower slide frame is pulled out of the guide frame, the edge η of the frame k meets the roller i. At this moment the double-armed lever g is swung out, by means of which the slides d and c are moved towards the image field (arrows / in Fig. 1)

werden. Die Verschiebung der Schieber d und e ist beendet, wenn die Rolle i auf der Kante k^ des Diarahmens aufliegt (Abb. 3). 35 Die Weiterbewegung des Diarahmens hat zur Folge, daß das Gestänge gt, g„, h unter der Wirkung der gespannten Feder ο in die Anfangslage (Abb.1) zurückkehrt und dadurch das Bildfeld wieder freigegeben wird. In- 40 zwischen hat sich der Wechsel des Diabildes in bekannter Weise vollzogen, indem an die Stelle des Diarahmens k der Diarahmen p getreten ist.will. The shifting of the slide d and e is finished when the roller i rests on the edge k ^ of the slide frame (Fig. 3). 35 The further movement of the slide frame has the consequence that the linkage g t , g ″, h returns to the starting position (Fig. 1) under the action of the tensioned spring ο and the image field is released again. In the meantime, the slide image has been changed in a known manner, in that slide frame p has taken the place of slide frame k .

Claims (2)

Patent-Ansprüche:Patent Claims: 1. Bildwechsler für Bildwerfer mit Vorrichtung zum selbsttätigen Verdunkeln des Bildfeldes beim Bildwechsel, gekennzeichnet durch Steuerorgane, die in die Bewegungsbahn des unteren im Rahmen befindlichen Bildes hineinreichen und beim Herausziehen dieses Bildes die Verdunklungsorgane betätigen.1. Image changer for projector with device for automatic darkening of the image field when changing the image, characterized by control elements that move in the path of the lower in the frame Reach inside the image and when you pull out this image, the darkening organs actuate. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der im oberen Teile des Bildwechslers schwingbar gelagerte, die an sich bekannten Verdunklungsschieber steuernde doppelarmige Hebei an seinem unteren Ende eine Rolle trägt, gegen die das untere Bild beim Herausziehen anstößt und den Hebel zum Ausschwingen bringt.2. Apparatus according to claim 1, characterized in that the in the upper Parts of the image changer are swingably mounted, the known blackout slider controlling double-armed Hebei carries a roller at its lower end, against which the lower picture when pulled out and makes the lever swing out. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DEE28577D Image changer for projector Expired DE385419C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE28577D DE385419C (en) Image changer for projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE28577D DE385419C (en) Image changer for projector

Publications (1)

Publication Number Publication Date
DE385419C true DE385419C (en) 1923-11-23

Family

ID=7073417

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE28577D Expired DE385419C (en) Image changer for projector

Country Status (1)

Country Link
DE (1) DE385419C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1026552B (en) * 1954-03-15 1958-03-20 Pintsch Bamag Ag Change slider for darkened image change of stereo slides in pairs
US2916965A (en) * 1957-11-22 1959-12-15 Eastman Kodak Co Slide changer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1026552B (en) * 1954-03-15 1958-03-20 Pintsch Bamag Ag Change slider for darkened image change of stereo slides in pairs
US2916965A (en) * 1957-11-22 1959-12-15 Eastman Kodak Co Slide changer

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