GB667372A - Reversible cinematograph apparatus - Google Patents

Reversible cinematograph apparatus

Info

Publication number
GB667372A
GB667372A GB2949148A GB2949148A GB667372A GB 667372 A GB667372 A GB 667372A GB 2949148 A GB2949148 A GB 2949148A GB 2949148 A GB2949148 A GB 2949148A GB 667372 A GB667372 A GB 667372A
Authority
GB
United Kingdom
Prior art keywords
film
spool
feed
sprockets
flange
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
Application number
GB2949148A
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.)
ANDRE VICTOR LEON CLEMENT DEBR
Original Assignee
ANDRE VICTOR LEON CLEMENT DEBR
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 ANDRE VICTOR LEON CLEMENT DEBR filed Critical ANDRE VICTOR LEON CLEMENT DEBR
Priority to GB2949148A priority Critical patent/GB667372A/en
Publication of GB667372A publication Critical patent/GB667372A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B1/00Film strip handling
    • G03B1/18Moving film strip by means which act on the film between the ends thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

667,372. Kinematograph apparatus. DEBRIE, A. V. L. C. Nov. 12, 1948, No. 29491/48. Class 97 (i). A film feeding mechanism comprises upper and lower film sprockets with between them, a curved film guide in which the gate aperture is formed, and, between the guide and the lower sprocket, a pivoted beater member which is moved downwards periodically in synchronism with the sprockets to feed the film intermittently. A detachable film feed spool and a non-detachable take-up spool are used. The projector shown has a lamp 23, condenser 22 and projection lens shown dotted at 21. The film is wound by sprockets 3, 11 and passes through the film guide 6 and round rollers 5, 8. The latter is pivoted on an arm 9, pivoted at 27 and carrying a laterally projecting cam portion 20 which is struck periodically by one of a number of pins 25 carried by a gear-wheel 17 on the shaft of the sprocket 11. The roller 8 is thus moved downwards to enlarge the film loop 24 at the expense of the loop 26<SP>1</SP> and feed a frame of film through the channel 6 past the aperture 7. The pivot 27 may be adjustable, for example by slide-and-screw mechanism, to maintain accurate framing. The gear-wheel 17, and the similar gear 16 driving the sprocket 3, are driven from a common pinion 18. After projection the film is rewound on to the upper spool merely by reversing the drive to the mechanism. During this movement no loop is formed at 26<SP>1</SP> so that the roller 8 remains in its lowest position and the pins 25 do not strike the cam 20. The detachable feed spool has a circular hole in the centre of one flange, to engage its spindle, and a smaller square hole in the other flange to provide a driving engagement with a squared portion at the outer end of the spindle. Lightening holes are formed in one flange only so that the flanges are distinguishable by touch.
GB2949148A 1948-11-12 1948-11-12 Reversible cinematograph apparatus Expired GB667372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2949148A GB667372A (en) 1948-11-12 1948-11-12 Reversible cinematograph apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2949148A GB667372A (en) 1948-11-12 1948-11-12 Reversible cinematograph apparatus

Publications (1)

Publication Number Publication Date
GB667372A true GB667372A (en) 1952-02-27

Family

ID=10292386

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2949148A Expired GB667372A (en) 1948-11-12 1948-11-12 Reversible cinematograph apparatus

Country Status (1)

Country Link
GB (1) GB667372A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895392A (en) * 1954-05-26 1959-07-21 Harry R Habig Image motion compensating film control apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895392A (en) * 1954-05-26 1959-07-21 Harry R Habig Image motion compensating film control apparatus

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