DE460622C - Film winding device on cinematographic apparatus - Google Patents
Film winding device on cinematographic apparatusInfo
- Publication number
- DE460622C DE460622C DEE31761D DEE0031761D DE460622C DE 460622 C DE460622 C DE 460622C DE E31761 D DEE31761 D DE E31761D DE E0031761 D DEE0031761 D DE E0031761D DE 460622 C DE460622 C DE 460622C
- Authority
- DE
- Germany
- Prior art keywords
- film
- pendulum
- extension
- axis
- reel
- 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
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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/32—Details specially adapted for motion-picture projection
- G03B21/321—Holders for films, e.g. reels, cassettes, spindles
- G03B21/323—Cassettes
Description
Bei Filmspulengehäusen kinematographischer Apparate ist es bekannt, der Eintrittsöffnung des Films gegenüber eine Blattfeder anzuordnen. Diese hat den Zweck, den Film nach abwärts zu leiten, damit sein freies Ende, nachdem es über das Ende der Feder hinweggelangt ist, möglichst weit unterhalb der Aufnahmespulenachse freigegeben wird, um die Filmaufwärtskrümmung hinter dieIn the case of film reel housings of cinematographic apparatus, it is known to have a leaf spring opposite the entry opening of the film to arrange. This has the purpose of directing the film downwards so that its free End, after it has got over the end of the spring, as far below as possible the take-up spool axis is released to the film's upward curvature behind the
ίο Spulenachse zu verlegen. Ferner dient diese Feder dazu, die während des Aufwickeins sich vielleicht bemerkbar machenden Filmspannungen durch Einwärtsfedern.auszugleichen. ίο to relocate the spool axis. This is also used Spring to it, the film tensions that might become noticeable during winding compensated by inward springs.
Auch ist es bei diesen Apparaten üblich, über der Spulenachse eine an einem Hebelarm befindliche Rolle vorzusehen, die sich über die um die Achse sich aufwickelnden Filmlagen als Führung oder Gewicht legt.It is also common in these apparatuses to have one on a lever arm above the coil axis to provide located roll, which is wound around the axis Film layers as a guide or weight.
ao Bei diesen Einrichtungen hängt es von dem Krümmungsvermögen des Films ab, ob dieser sich auch tatsächlich hinter der Achse mit seinem Ende an bzw. um die Achse herum legt und dann durch diese mitgenommen wird oder nicht.ao With these devices it depends on the curvature of the film whether this is actually behind the axle with its end on or around the axle lays and is then taken away by this or not.
Hier setzt die Erfindung ein, indem ein Film, der sich selbsttätig aufwickeln soll, der Spulenachse so zugeführt wird, daß er sich mit Sicherheit um diese herumwindet, auch ohne daß er mit ihr in feste Verbindung — etwa durch Mitnehmerzähne o. dgl. — gelangt. Gegenstand der Erfindung ist eine Einrichtung, um ein derartiges Aufwickeln des Films einzuleiten und eine etwaige Aufwickelung neben der Achse zu vermeiden. Um dies zu* erreichen, sind die pendelnden Führungsstücke so ausgebildet, daß sie das richtige Umfassen der Spulenachse durch den Film bewirken.This is where the invention comes into play by a film that is supposed to wind up automatically, the Coil axis is fed so that it is surely winds around it, even without being in firm contact with it - for example through driver teeth or the like - arrives. The invention is a Means to initiate such winding of the film and avoid any off-axis winding. In order to achieve this *, the oscillating guide pieces are designed in such a way that they effect correct embracing of the spool axis by the film.
Ein Ausführungsbeispiel ist zeichnerisch wiedergegeben.An exemplary embodiment is shown in the drawing.
In dem Filmspulengehäuse α des Kinoapparates b sind zwei Führungsstücke (Pendel und Filmgegenlager) c, d vorgesehen, von denen c die Zuführung des Filmendes e zur Filmspulenachse f bewirkt, während das Gegenlager d so dazu angebracht ist, daß an der ihm zunächstliegenden Seite der Filmspulenaohse/ das Filmende sich an und um diese herum legt. Das Einführungspendel c ist mit einem Fortsatz c1 versehen, der vorteilhaft als Kreisbogen um den Schwenkpunkt c2 des Pendels ausgebildet ist. Dieser Fortsatz findet seine Führung und teilweise Aufnahme in einer Aussparung g des Filmführungskanals g1. Die Wirkungsweise der Einrichtung ist folgende: In the film reel housing α of the cinema apparatus b , two guide pieces (pendulum and film counter bearing) c, d are provided, of which c causes the film end e to be fed to the film reel axis f , while the counter bearing d is attached so that the film reel neck is on the side closest to it / the end of the film attaches itself to and around them. The introductory pendulum c is provided with an extension c 1 , which is advantageously designed as a circular arc around the pivot point c 2 of the pendulum. This extension is guided and partially received in a recess g of the film guide channel g 1 . The device works as follows:
Das Filmende e legt sich bei seiner Einführung in den Zuführungskanal g1 gegen die seitlichen Führungsbahnen gz und gleitet an diesen, ohne dabei mit dem Pendelfortsatz c1 in Berührung zu kommen, entlang, bis es den inneren Raum des Kinoapparates b erreicht hat. In diesem Augenblick legt sich das Filmende e an den Fortsatz cl des Pendels c und wirkt auf letzteren schiebend oder mitnehmend ein. Das Pendel wird aus seiner vorherigen Lage bewegt, und während dieserWhen it is introduced into the feed channel g 1, the end of the film e lies against the lateral guideways g z and slides along them without coming into contact with the pendulum extension c 1 until it has reached the inner space of the cinema apparatus b . At this moment, the end of the film e lies against the extension c l of the pendulum c and acts on the latter in a pushing or driving manner. The pendulum is moved from and during its previous position
Claims (3)
Sobald s slides
As soon
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE31761D DE460622C (en) | 1924-12-23 | 1924-12-23 | Film winding device on cinematographic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE31761D DE460622C (en) | 1924-12-23 | 1924-12-23 | Film winding device on cinematographic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
DE460622C true DE460622C (en) | 1928-06-01 |
Family
ID=7075249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEE31761D Expired DE460622C (en) | 1924-12-23 | 1924-12-23 | Film winding device on cinematographic apparatus |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE460622C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1187914B (en) * | 1962-05-29 | 1965-02-25 | Agfa Ag | Device for automatically attaching the front end of the film to the take-up spool of a photographic or cinematographic device |
US3395870A (en) * | 1966-06-16 | 1968-08-06 | Ncr Co | Automatic tape wind up means |
US3984067A (en) * | 1971-10-15 | 1976-10-05 | Matsushita Electric Industrial Co., Ltd. | Automatic tape winding device |
-
1924
- 1924-12-23 DE DEE31761D patent/DE460622C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1187914B (en) * | 1962-05-29 | 1965-02-25 | Agfa Ag | Device for automatically attaching the front end of the film to the take-up spool of a photographic or cinematographic device |
US3395870A (en) * | 1966-06-16 | 1968-08-06 | Ncr Co | Automatic tape wind up means |
US3984067A (en) * | 1971-10-15 | 1976-10-05 | Matsushita Electric Industrial Co., Ltd. | Automatic tape winding device |
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