AT74654B - Device for unwinding rolls of film tape. - Google Patents

Device for unwinding rolls of film tape.

Info

Publication number
AT74654B
AT74654B AT74654DA AT74654B AT 74654 B AT74654 B AT 74654B AT 74654D A AT74654D A AT 74654DA AT 74654 B AT74654 B AT 74654B
Authority
AT
Austria
Prior art keywords
film tape
rollers
film
unwinding rolls
unwinding
Prior art date
Application number
Other languages
German (de)
Inventor
Edward Bryan Feaster
Original Assignee
Edward Bryan Feaster
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Edward Bryan Feaster filed Critical Edward Bryan Feaster
Application granted granted Critical
Publication of AT74654B publication Critical patent/AT74654B/en

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  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Description

  

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   Auf der Scheibe 16 ist eine Vorrichtung zum Abwickeln des Filmbandes von der Mitte aus angeordnet. Diese Vorrichtung wird vorzugsweise durch eine Zahnwalze 19 mit Gegenwalzen 20, 20 gebildet. Die Walzen 19, 20 können beliebigen Baues, beispielsweise von der gewöhnlich zum Ab- 
 EMI2.2 
 gebracht, dass der Träger 13 frei drehbar ist, so dass der geringste Zug auf die innere Windung der   Fihnbandrolle Drehung   des Trägers 13 und so freies Abwickeln in Anpassung an die Abwickelvorrichtung herbeiführt.

   
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Um das innere Ende des Filmbandes leicht durch die Abwickelvorrichtung 19, 20 führen zu können, ist die Welle 38 vorzugsweise am Unterende verschwenkbar gelagert, um eine seitliche Verschwenkung dieser Welle zu   ermöglichen.   Zu diesem Zwecke ist im Tische 15 und der Scheibe 16 
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 auf die Seite gelegt und der Film kann leicht zwischen der Walze 19 und der Gegenwalze 20 ein-   geführt werden.   In Fig. 8 ist eine geänderte Ausführungsform dargestellt, welche dazu bestimmt ist, den Film gegen Berührung mit den Rollen 7 des Schutzrahmens der   zentralen Scheibe 76   zu schützen.

   In dieser Anordnung sind ausser den   Rollen 17   eine Reihe von gegenüberliegenden Rollen 46 angeordnet und um die Rollen 17 sowie zwischen den Rollen 17 und den gegenüberliegenden Rollen 46 ist ein endloses Band 47 angeordnet, welches   mit dem Filmbande   2 läuft, wenn der Träger 13 gedreht wird. Das Filmband 2 wird daher gegen Berührung mit den Rollen 17 
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 des   Filnbandes   auf ein   Minimum   herabgesetzt wird. 



   Aus dem Angeführten ergibt sich, dass das Filmband,   nacbdem es auf die Aufwickelspule 3   aufgewunden wurde, von derselben leicht abgenommen und auf dem Tische 13 über den durch die Bolzen 17 gebildeten Rahmen aufgeschoben werden kann. Das innere Ende des Films wird dann   dur ( !' die Abwickelvorrichtung 19, 20   gezogen, was durch Zug auf den Schieber 42 erleichtert wird, der die Rolle 19 seitlich verschwenkt. Das Ende des Filmbandes wird dann über die Rollen   2. 3, 25 sud   die   FördervorrichtuDg     21, 22 geführt   und unter der üblichen   Halteklemme     48   (Fig. 6) der Aufwickelspule eingelegt.

   Nun wird durch Drehung der Kurbel 32 das   Filjnband   von seiner inneren Windung frei abgezogen und anch Durchgang durch den   Projektionsapparat   auf 
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**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



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   A device for unwinding the film tape from the center is arranged on the disk 16. This device is preferably formed by a toothed roller 19 with counter rollers 20, 20. The rollers 19, 20 can be of any construction, for example from the one usually used for
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 brought that the carrier 13 is freely rotatable, so that the slightest pull on the inner turn of the Fihnbandrolle rotation of the carrier 13 and so brings about free unwinding in adaptation to the unwinding device.

   
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In order to be able to easily guide the inner end of the film strip through the unwinding device 19, 20, the shaft 38 is preferably mounted pivotably at the lower end in order to enable this shaft to pivot laterally. For this purpose there is table 15 and disk 16
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 laid on its side and the film can easily be fed between the roller 19 and the counter roller 20. FIG. 8 shows a modified embodiment which is intended to protect the film against contact with the rollers 7 of the protective frame of the central disk 76.

   In this arrangement a number of opposite rollers 46 are arranged in addition to the rollers 17 and an endless belt 47 is arranged around the rollers 17 and between the rollers 17 and the opposite rollers 46, which runs with the film tape 2 when the carrier 13 is rotated . The film tape 2 is therefore prevented from contacting the rollers 17
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 of the film is reduced to a minimum.



   It follows from the above that the film tape, after it has been wound onto the take-up reel 3, can easily be removed from the same and pushed onto the table 13 via the frame formed by the bolts 17. The inner end of the film is then pulled through (! 'The unwinding device 19, 20, which is facilitated by pulling on the slide 42, which pivots the roll 19 laterally. The end of the film tape is then pulled over the rolls 2, 3, 25 sud the conveyor 21, 22 out and inserted under the usual retaining clamp 48 (Fig. 6) of the take-up reel.

   Now, by turning the crank 32, the film tape is pulled free from its inner winding and then passed through the projection apparatus
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** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

**WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT74654D 1914-11-10 1914-11-10 Device for unwinding rolls of film tape. AT74654B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT74654T 1914-11-10

Publications (1)

Publication Number Publication Date
AT74654B true AT74654B (en) 1918-09-10

Family

ID=3596308

Family Applications (1)

Application Number Title Priority Date Filing Date
AT74654D AT74654B (en) 1914-11-10 1914-11-10 Device for unwinding rolls of film tape.

Country Status (1)

Country Link
AT (1) AT74654B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1192482B (en) * 1954-09-30 1965-05-06 Ncr Co Device for intermittent unwinding of a tape from inside a tape roll

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1192482B (en) * 1954-09-30 1965-05-06 Ncr Co Device for intermittent unwinding of a tape from inside a tape roll

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