US3687532A - Cinematographic broad screen recording and projection method and a film cartridge for carrying out the method - Google Patents

Cinematographic broad screen recording and projection method and a film cartridge for carrying out the method Download PDF

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Publication number
US3687532A
US3687532A US46627A US3687532DA US3687532A US 3687532 A US3687532 A US 3687532A US 46627 A US46627 A US 46627A US 3687532D A US3687532D A US 3687532DA US 3687532 A US3687532 A US 3687532A
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US
United States
Prior art keywords
film
core
housing
slide
take
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 - Lifetime
Application number
US46627A
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English (en)
Inventor
Manfred Suss
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.)
KINAG GmbH
Original Assignee
KINAG GmbH
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
Priority claimed from DE19702005251 external-priority patent/DE2005251A1/de
Application filed by KINAG GmbH filed Critical KINAG GmbH
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Publication of US3687532A publication Critical patent/US3687532A/en
Anticipated expiration legal-status Critical
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    • 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
    • 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
    • G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe

Definitions

  • the invention is based on such a cinematographic broad screen recording or filming and projecting method in which two adjacent picture areas of the film are simultaneously exposed and projected respectively.
  • One aim of the invention is to modify a cinematographic method of the last mentioned type, in which two adjacent image areas of the film are simultaneously exposed and projected, in such a manner that without changing from the normal transport step and without turning of the image a broad screen image or picture can be produced and projected.
  • this aim is attained in the case of a cinematographic broad screen method of the above-mentioned type in that a double track film is used on which laterally adjacent picture areas disposed transversely to in the direction of travel of the film are exposed simultaneously during a normal film transport step and in that during the reproduction of the unsplit double track film broad screen images are projected using the aforementioned adjacent areas during a single film transport step.
  • double track film is to be taken to mean such a film which in accordance with its purpose is provided during filming with two adjacent rows of images and is split in the middle so that during projection only the perforation row of one edge is available for transport.
  • the best-known example of such a double track film is the double 8 film 16 mm film with two sets of perforations) as has been used exclusively for some time for amateur purposes.
  • the super 8 films are also capable of being used in the method in accordance with the invention, if the films are obtained, instead of using the normal manner, by splitting a double track film".
  • the invention is also capable of being used for example for 35 mm double track film which when split yields two 17.5 super films.
  • the invention furthermore has the advantage of a broader format, because in accordance with the invention two adjacent images of standard format are combined to form a broad screen format, that is to say the breadth of the image is double that of the normal breadth, while the height is equal to the height of a normal image.
  • the design of the apparatus need only be changed slightly.
  • the film mask and objective, and possibly also the sector shutter only need to be changed, while in the case of the projector the film guiding arrangement must additionally be made broader.
  • the construction can at the outset be made in such a manner that it is possible to work selectively with a broad screen format or with a normal format.
  • the invention has the aim of making the cinematographic recording method also applicable for film cameras which are made for the super-S-method, that is to say are designed for use with cartridges which have a square shape and in which the supply core and the take-up core lie on a single axis in two planes and the film runs from one plane to the other and passes the picture opening.
  • this aim is achieved in that the cartridge in its external dimensions and in the functional elements co-operating with the cinematographic apparatus corresponds to standard cartridges (more particularly super-Scartridges), which have a film perforated on one side which is taken up on two coaxial winding cores which are arranged inside the cartridge in a plane laterally adjacent and carry a double track film, the film image opening and film gate extending over the whole breadth of the double track film between these perforated edges.
  • the invention is based on the realization that the functional elements of cinematographic camera, which in accordance with the purpose in view, bring about the transport of a film with perforations on one side, can be used also for the transport of unsplit double track film without any modification if the eassette has a suitable construction.
  • Super-8-cartridges are suitable because owing to the normally coaxial arrangement of the winding cores within the housing the space is left for a film which is twice as broad.
  • the invention is primarily directed to the super-8- method, although the use of the invention for other formats or cartridges can be considered in which conditions are similar.
  • the invention is also not only suitable for cartridges in cameras, but also for cartridges for projectors.
  • This mounting in the cartridge of the drive hub corresponds in size, shape and arrangement to the hub of the takeup -core used as above indicated in conventional super S-cartridges. Owing to the construction of the winding cores so as to slide in the guide an excellent use of the space is made possible because with this feature the mutual spacing of the winding cores and the spacing from the housing is achieved in accordance with the winding diameter.
  • This type of coil or bobbin guidance is not limited to application in the case of super-8-cassettes, but may also be used in accordance with the invention with moving spool cores, including those for film perforated on one side.
  • a particularly suitable arrangement is achieved in the case of a diagonal guidance of the winding cores within the substantially square housing of a super-8- cartridge or cassette. It is then possible also to accommodate a double track film of approximately 15 meters in length in such a cartridge and this corresponds to the length of a super-8-film arranged for the purpose in view in such a cartridge.
  • a roller is joumalled at the corner of the housing associated with the take-up core in such a manner that the roller supports the film coil on the winding core irrespective of the coil diameter so that the film does not come into contact with the walls of the housing.
  • the wound film lifts itself over the roller automatically in the guide means and presses the core of the supply coil back automatically so that the contact of the film strip on the coils is barred, because the winding cores are arranged at a fixed distance on a slide.
  • FIG. 1 is a film section of an exposed double-8-film.
  • FIG. 2 is a film segment of an exposed super-8-film.
  • FIG. 3 is a perspective exploded representation of the cartridge with the lid removed.
  • FIGS. 4 and 5 are diagrammatic inner views of the cartridge or cassette in accordance with the invention with the film coil arrangement before exposure and after exposure respectively.
  • FIG. 6 is an inner view of the housing.
  • FIGS. 1 and 2 indicate that the individual images I extend over the whole breadth of the film so as to come close to the lateral perforations 2.
  • the images 1 run through one transport step and leave between them unexposed gaps 3 which correspond in breadth to the breadth of the usual intermediate space or gap.
  • the image breadth available is about mm and the height about 3.7 mm so that there is a height-breadth ratio of approximately 122.8.
  • FIGS. 3 to 9 show a film cartridge or cassette suitable for carrying out the exposing method.
  • a slide 12 is arranged within the cassette or cartridge housing 10 so that it can be moved or shifted along the diagonal 13.
  • the slide 12 carries the core 14 of the film supply and the core 16, on which the film is taken up.
  • the film 18 running from the supply coil firstly passes over a guide roller 20, then over a connecting part 22 ahead of the picture gate 24 and from thence runs over a guide roll 26 towards the take-up core 16.
  • FIG. 4 shows diagrammatically winding of the film for exposure and FIG. 5 shows the arrangement after completion of exposure.
  • the slide guidingmeans 30 can be fixed positively in position.
  • the upper corner on the left-hand side shown in FIG. 6 is included in the slide guiding means 32.
  • the latter carries the bearing pin 34 for the guide roller 20.
  • the guide roller 26 is placed on a pin 36 fixed in the housing 10.
  • the pressing roller 28 is mounted on a pin 38.
  • the bottom of the housing has in a conventional manner a hole 40 through which the bobbin drive extends and has a flat disc whose part of greater diameter lying within the housing has teeth.
  • the teeth of the disc 42 mesh with a gear wheel 44 whose carrying pin is supported by a curved slot 46 in the housing bottom on the one hand and a curved slot 48, approximately perpendicular to it, in the carriage of the slide 12 on the other hand.
  • This gear wheel 44 is constantly in mesh with a gear ring on the take-up core 16, which is mounted in a fixed manner in the slide 12.
  • the core 14 of the supply coil is mounted on the slide 12 with a fixed distance from the core 16 of the coil to be wound up.
  • the slide has parallel sliding faces 50 and 52 which can slide between the slide guiding means 30 and 32 in the housmg.
  • the front wall has an opening 54 extending over the whole film breadth, behind which the film gate 24 lies, and through which the claw system of the film camera extends.
  • These film transport parts draw off the film from the supply C01] and move it past the film gate.
  • the despooling mechanism of the camera engages the disc 42 arranged in the opening 40 and the disc 42 turns the take-up core 16 via the gear wheel 44.
  • the slide 12 is moved upwards by the roller 28 in the slide guide means 32,30 along the diagonal 13, the slot guide means 46,48 guiding the pin on which the gear wheel 44 is journalled in such a manner that it always remains in connection with the wheels 42 and 16.
  • a cartridge for carrying and transporting elongated cinematographic film, or the like comprising:
  • a slide guide means in said housing for guiding shifting of a slide
  • a slide supporting a supply core for supplying film and supporting a take-up core, spaced away from the supply core, for taking up the supplied film;
  • said slide being movable through said housing along said slide guide means between a first position where said take-up core is nearer to one said housing enclosing side wall and said supply core is further from another said housing enclosing side wall and a second position where said take-up core is further from said one said housing enclosing side wall and said supply core is nearer to said another said housing enclosing side wall;
  • said housing fixedly supporting a bearing element which is positioned near the one said housing side wall to bear against the film on said take-up core as the film reeling on said take-up core increases in diameter, thereby to cause said slide to move from said first toward said second position.
  • a drive means connected with said take-up core to drive said take-up core; said drive means including a drive gear;
  • said take-up core including a hub which meshes with said drive gear; said drive gear being supported by a pin extending through a slot in said housing and through a separate slot in said slide; said slots each being curved and intersecting substantially perpendicularly to each other to guide shifting of said drive gear pin as said slide moves.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)
US46627A 1969-06-23 1970-06-16 Cinematographic broad screen recording and projection method and a film cartridge for carrying out the method Expired - Lifetime US3687532A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1931828 1969-06-23
DE19702005251 DE2005251A1 (de) 1970-02-05 1970-02-05 Filmkassette

Publications (1)

Publication Number Publication Date
US3687532A true US3687532A (en) 1972-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
US46627A Expired - Lifetime US3687532A (en) 1969-06-23 1970-06-16 Cinematographic broad screen recording and projection method and a film cartridge for carrying out the method

Country Status (2)

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US (1) US3687532A (de)
CH (1) CH507529A (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1079409A (fr) * 1953-06-09 1954-11-30 Perfectionnement aux dispositions des images et des perforations dans un film cinématographique de format normal
US3537779A (en) * 1967-08-24 1970-11-03 Tibor Horvath Cartridges and related mechanisms
US3537780A (en) * 1967-02-13 1970-11-03 Pierre Angenieux Motion picture film magazine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1079409A (fr) * 1953-06-09 1954-11-30 Perfectionnement aux dispositions des images et des perforations dans un film cinématographique de format normal
US3537780A (en) * 1967-02-13 1970-11-03 Pierre Angenieux Motion picture film magazine
US3537779A (en) * 1967-08-24 1970-11-03 Tibor Horvath Cartridges and related mechanisms

Also Published As

Publication number Publication date
CH507529A (de) 1971-05-15

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