DE250812C - - Google Patents
Info
- Publication number
- DE250812C DE250812C DENDAT250812D DE250812DA DE250812C DE 250812 C DE250812 C DE 250812C DE NDAT250812 D DENDAT250812 D DE NDAT250812D DE 250812D A DE250812D A DE 250812DA DE 250812 C DE250812 C DE 250812C
- Authority
- DE
- Germany
- Prior art keywords
- tape
- tension
- photo
- picture
- drive
- 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.)
- Active
Links
- 238000004804 winding Methods 0.000 claims description 5
- 230000036633 rest Effects 0.000 claims 1
- 230000000284 resting Effects 0.000 claims 1
- 230000003247 decreasing Effects 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
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
- G03B21/43—Driving mechanisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die Erfindung betrifft eine Bildbandwickelvorrichtung für kinematographische Apparate, bei der ein zu starkes Spannen des Bildbandes und infolgedessen ein Zerreißen desselben verhütet werden soll.The invention relates to an image tape winding device for cinematographic apparatus, in the case of excessive tensioning of the illustrated book and consequent tearing of the same should be prevented.
Während bei bekannten Vorrichtungen das Bildband die Spannung einer an der Aufwickeltrommel angreifenden Bremse beeinflußt, soll es nach der Erfindung auf eine nachgiebige Spannvorrichtung des die Aufwickeltrommel drehenden Treibriemens einwirken.While in known devices, the tape, the tension on the take-up drum applied brake, it should according to the invention on a resilient clamping device of the winding drum the rotating drive belt.
Die Zeichnung zeigt eine Seitenansicht eines kinematographischen Apparates, aus welcher die Spannvorrichtung entsprechend der Erfindung ersichtlich ist.The drawing shows a side view of a cinematographic apparatus from which the clamping device according to the invention can be seen.
Gemäß der Zeichnung ist das Getriebe für das Bildband an einem Gehäuse α angeordnet, das senkrecht verstellbar an einem Tisch b vorgesehen ist. Das Bildband c wird in einem Magazin d von einer Spule abgewickelt und in einem Magazin e wieder auf eine Spule aufgewickelt. Das Wiederaufwickeln des Bildbandes auf die Spule in dem Magazin e wird geregelt durch die Spannung des Bildbandes, welches über den Zapfen / geführt ist, der an einem Arm eines Winkelhebels k sitzt, während der andere Arm dieses Hebels eine Spannrolle I trägt, die gegen einen Riemen anliegt, welcher über die Riemscheiben η und 0 läuft, von denen die erstere an dem Rahmen des Apparates angebracht ist und die letztere auf der Spindel der Aufwickeltrommel in dem Magazin e sitzt.According to the drawing, the gear for the photo book is arranged on a housing α , which is provided vertically adjustable on a table b . The illustrated tape c is unwound from a reel in a magazine d and rewound onto a reel in a magazine e. The rewinding of the picture tape on the reel in the magazine e is regulated by the tension of the picture tape, which is guided over the pin / that sits on one arm of an angle lever k , while the other arm of this lever carries a tensioning roller I , which against one Belt is applied, which runs over the pulleys η and 0 , of which the former is attached to the frame of the apparatus and the latter sits on the spindle of the winding drum in the magazine e.
Durch ein zu starkes Anspannen des Bildbandes c wird der Z.apfen j nach aufwärts bewegt; der Winkelhebel dreht sich und die Spannrolle I wird von dem Riemen m abgehoben, so daß dieser nunmehr lose auf der Riemscheibe 0 sitzt, und das Aufwickeln des Bildbandes verlangsamt wird, bis die Spannung des Bildbandes wieder geringer geworden ist.If the picture book c is tightened too much, the pin j is moved upwards; the bell crank rotates and the tensioning roller I is lifted off the belt m so that it is now loosely seated on the pulley 0 and the winding of the picture book is slowed down until the tension of the picture book has decreased again.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE250812C true DE250812C (en) |
Family
ID=509304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT250812D Active DE250812C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE250812C (en) |
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0
- DE DENDAT250812D patent/DE250812C/de active Active
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