US3799660A - Cassette adapted to be externally attached to a motion picture camera - Google Patents

Cassette adapted to be externally attached to a motion picture camera Download PDF

Info

Publication number
US3799660A
US3799660A US00236402A US23640272A US3799660A US 3799660 A US3799660 A US 3799660A US 00236402 A US00236402 A US 00236402A US 23640272 A US23640272 A US 23640272A US 3799660 A US3799660 A US 3799660A
Authority
US
United States
Prior art keywords
film
cassette
loop
detent pins
path forming
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
US00236402A
Other languages
English (en)
Inventor
O Blaschek
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.)
Arri GmbH
Original Assignee
Arnold and Richter KG
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 DE19712114484 external-priority patent/DE2114484C3/de
Application filed by Arnold and Richter KG filed Critical Arnold and Richter KG
Application granted granted Critical
Publication of US3799660A publication Critical patent/US3799660A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/26—Holders for containing light sensitive material and adapted to be inserted within the camera
    • G03B17/265—Holders for containing light sensitive material and adapted to be inserted within the camera specially adapted for motion picture film, e.g. 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
    • G03B1/00—Film strip handling
    • G03B1/56—Threading; Loop forming

Definitions

  • PATENTEDMARZB 1574 sum U8UF1O PATENTEDMAR26 I974 sum 09 [1F 10 PATENTEDMARZS I974 37.991560 SHEET '10 [1F 1o It is often difficult to load the film into known film I cassettes of this kind. Besides, the film path means are not protected and for this reason may suffer damage so that the subsequent operation of the camera to which the cassette is externally attached may be adversely affected.
  • a loop former is detachably mounted on the film path means.
  • This loop former automatically guides the film over the film path means and also ensures the formation of the loop which is required and which could otherwise be formed only by complicated manipulations.
  • the loop former is designed to in terengage with the detent means which serve to connect the cassette to the camera body.
  • the film path means of the cassette are provided with detent pins for fixing the film loop in position when the loop former has been removed. These detent pins ensure the proper position of the film in the cassette relative to the camera body.
  • the pull-down claws provided in the camera body can enter the perforations of the film in the proper orientation.
  • the invention provides means which disengage the detent pins from the perforations of the film in response tothe mounting of the loop former and to the application of the cassette to the camera body.
  • FIG. 1 is a side elevation showing the cassette
  • FIG. 2 is a front elevation showing the cassette without a cassette cover, 7 1
  • FIG. 3 is a sectional view taken on line A-B in FIG.
  • FIG. 4 is a rear elevation showing the cassette
  • FIG. 5 is an top plan view showing the film path means of the cassette without a loop former
  • FIG. 6 is a side sectional view showing the film path means of the cassette
  • FIG. 7 is a sectional view taken on line E-F ofFIG. 6.
  • FIG. 8 is an enlarged side sectional view of the film path means
  • FIG. 9 is a sectional view taken on line A-B of FIG.
  • FIG. 2 is a front elevation showing the cassette 1 with the cassette cover 2 removed.
  • the housing provided adjacent to the film path means 5 and to a loop former 6 detachably mounted thereon is shown partly in section.
  • An angled arm 7 is formed with an eyelet, which 7 is'not shown and with which the loop former 6 is hooked on the detent projection 8 of the cassette 1.
  • FIG. 10 is a side sectional view showing the loop former
  • FIG. 11 is an elevation showing the film guide of the camera body.
  • a cassette cover 2 of a The loop former is then forced onto the cassette until a detent spring 9 having an aperture 9, which is not shown, snaps at said aperture into a detent projection 10 of the cassette 1.
  • a holder 11 serves to receive a supply coil of film. The film is withdrawn from the supply coil and is wound up on a take-up core 12.
  • FIG. 10 shows the loop former 6 entirely in section.
  • the arcuate arms 21 and 22 of the loopformer 6 are braced against each other by a coil spring 39 and at their ends 40 and 41 bear on associated stops 42 and 43.
  • the coil spring 39 produces the required contact pressure ensuringthat the loop former will be reliably held on the detent pins 8 and 9 of the cassette 1.
  • Film guide elements 31 are provided laterally of the film path means.
  • Detent pins 32 are disposed under these film guide elements, which enter the perforations of the film in the cassette when the same has been removed from the camera body and when the loop former has been removed.
  • the detent pins 32 are slidably mounted in bores and are held in position by a resilient wire member 33, which forms legs 34 and 35 which laterally protrude from the film path means.
  • the resilient wire member 33 holds the pins 32 in the perforations of the film.
  • the pin 32 is moved out of the perforations of the film in the cassette by means of guide strips 26 (FIG. 9) or lugs 58 (FIG. 10), respectively.
  • FIG. 11 shows a registration pin 56, which holds the film in position during the exposure.
  • the pull-down claws move in slots 57.
  • the detent pins 32 provided in the film path means of the cassette ensure that the film will be properly positioned when the cassette has been attached to the camera body so that the registration pin 56 and the pull-down claws can enter the perforations of the film.
  • FIG. 11 also shows catches 45 and 46 into which detent projections 10 and 8, respectively, fit for connecting cassette 1 to the camera body.
  • the outer film loop facing the camera must have a predetermined size, which depends on the type of equipment.
  • the film can be most easily loaded into the eassette and the proper length of film will be automatically provided for outside the film chamber of the cassette.
  • the film is hedl in a predetermined position by means of two pins 32, as has been described hereinbefore, in such a manner that a tip 56 with which the registration pin protrudes from the film plane of the camera body enters the associated perforation of the film as the cassette 1 is attached to the camera body.
  • the film loops disposed above and below the film gate 27 have the desired sizes.
  • the loop former 6 does not only facilitate the loading of the film into and the fixation of the film in the cassette but also covers the film path means to protect the same from being soiled.
  • a cassette which is adapted to be externally attached to a motion picture camera and comprises film path forming means
  • the improvement comprising a loop former detachably mounted on the film path forming means for automatically guiding the film over the film path forming means and for ensuring the formation of the film loop
  • the film path forming means of the cassette being provided with detent pins for fixing the film loop in position when the loop former is not attached to the cassette, and means for disengaging the detent pins from the perforations of the film in response to the mounting of the loop former and to the attachment of the cassette to the camera body.
  • a cassette according to claim 1 in which the means for disengaging the detent pins from the perforations of the film comprises a resilient wire member having legs which protrude laterally of the film path forming means and which extend through bores provided in the detent pins.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)
US00236402A 1971-03-25 1972-03-21 Cassette adapted to be externally attached to a motion picture camera Expired - Lifetime US3799660A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712114484 DE2114484C3 (de) 1971-03-25 Auf eine Filmkamera aufsetzbare Kassette

Publications (1)

Publication Number Publication Date
US3799660A true US3799660A (en) 1974-03-26

Family

ID=5802729

Family Applications (1)

Application Number Title Priority Date Filing Date
US00236402A Expired - Lifetime US3799660A (en) 1971-03-25 1972-03-21 Cassette adapted to be externally attached to a motion picture camera

Country Status (4)

Country Link
US (1) US3799660A (enExample)
FR (1) FR2130643B1 (enExample)
GB (1) GB1339109A (enExample)
IT (1) IT950488B (enExample)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE518889A (enExample) * 1952-04-02
US2101469A (en) * 1935-02-11 1937-12-07 Ellinwood Herman Ray Film moving mechanism
US2259849A (en) * 1940-02-02 1941-10-21 Mitchell Camera Corp Intermittent film movement mechanism
US2832258A (en) * 1954-06-16 1958-04-29 Paillard Sa Cinematographic cameras
DE1155008B (de) * 1962-03-20 1963-09-26 Robot Foto Ges Mit Beschraenkt Ansetzbare Filmkassette, insbesondere fuer Registrierkameras
GB985916A (en) * 1960-06-18 1965-03-10 Agfa Ag Improvements in and relating to cine cameras and cine projectors
US3201798A (en) * 1963-02-20 1965-08-17 Bell & Howell Co Loop former in short gate camera
US3475089A (en) * 1966-06-10 1969-10-28 Agfa Gevaert Ag Motion picture camera employing coaxial reels

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101469A (en) * 1935-02-11 1937-12-07 Ellinwood Herman Ray Film moving mechanism
US2259849A (en) * 1940-02-02 1941-10-21 Mitchell Camera Corp Intermittent film movement mechanism
BE518889A (enExample) * 1952-04-02
US2832258A (en) * 1954-06-16 1958-04-29 Paillard Sa Cinematographic cameras
GB985916A (en) * 1960-06-18 1965-03-10 Agfa Ag Improvements in and relating to cine cameras and cine projectors
DE1155008B (de) * 1962-03-20 1963-09-26 Robot Foto Ges Mit Beschraenkt Ansetzbare Filmkassette, insbesondere fuer Registrierkameras
US3201798A (en) * 1963-02-20 1965-08-17 Bell & Howell Co Loop former in short gate camera
US3475089A (en) * 1966-06-10 1969-10-28 Agfa Gevaert Ag Motion picture camera employing coaxial reels

Also Published As

Publication number Publication date
FR2130643B1 (enExample) 1975-10-24
GB1339109A (en) 1973-11-28
IT950488B (it) 1973-06-20
FR2130643A1 (enExample) 1972-11-03
DE2114484A1 (de) 1972-10-12
DE2114484B2 (de) 1976-06-24

Similar Documents

Publication Publication Date Title
US2484248A (en) Film cartridge
US3831881A (en) Disengageable anti-backup device for film cartridge
US2279022A (en) Motion picture apparatus
US2566267A (en) Quick-loading camera body and back construction
US2469008A (en) Roll film camera with detachable magazine
US3799660A (en) Cassette adapted to be externally attached to a motion picture camera
US2571796A (en) Film cassette
US3322366A (en) Automatic take-up cartridge
US3599894A (en) Antibackup mechanism in a film cartridge, and means in a camera for disabling the mechanism
US3490350A (en) Film magazine locating means
US2080021A (en) Motion picture apparatus control mechanism
US2721041A (en) Film cartridge for photographic cameras
US3175222A (en) Film cassette
US2126312A (en) Spring front camera
US3276341A (en) Film cartridge support, particularly for cameras
US3224828A (en) Motion picture projector with a movable film guide
US2186633A (en) Photographic camera
US1947482A (en) Photographic film package
US3744889A (en) Motion picture projector for use with plural types of film-containing magazine
US2005404A (en) Motion picture film magazine
US3712557A (en) Cassette and supply reel for use in cassette-loaded cinematographic apparatus
US2632361A (en) Film threading means for projector apparatus
US3893139A (en) Photographic apparatus with expansible housing
US3049981A (en) Film threading device
US3212838A (en) Film cassette