GB1247058A - Spindle for motion picture projector - Google Patents

Spindle for motion picture projector

Info

Publication number
GB1247058A
GB1247058A GB55364/68A GB5536468A GB1247058A GB 1247058 A GB1247058 A GB 1247058A GB 55364/68 A GB55364/68 A GB 55364/68A GB 5536468 A GB5536468 A GB 5536468A GB 1247058 A GB1247058 A GB 1247058A
Authority
GB
United Kingdom
Prior art keywords
friction
drum
flange
drive
shaft
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
GB55364/68A
Inventor
Leslie John Bunting
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1247058A publication Critical patent/GB1247058A/en
Expired legal-status Critical Current

Links

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
    • G03B21/321—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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Unwinding Webs (AREA)
  • Winding Of Webs (AREA)

Abstract

1,247,058. Securing reels on spindles. EASTMAN KODAK CO. 21 Nov., 1967 [24 Nov., 1967], No. 55364/68. Heading F2U. [Also in Divisions G2-G3] A coaxially arranged spindle assembly for use in a cine projector or other web handling apparatus comprises a supply reel supporting member 18 which may (a) rotate freely on fixed shaft 371; (b) be driven by a friction drive providing a torque dependent on the reel weight; or (c) be driven by a friction drive providing a constant torque. Weight dependent torque mode.-Member 18 has a flange 374 which enters and frictionally engages the face of a drum member 373 freely rotatable on, but axially fixed on, shaft 371. The friction depends on the tilt of member 18 under the weight of a reel-finger member 375 is slidable on shaft 371 and has fingers 376 extending through apertures 377 in drum 373 to engage holes in flange 374. Therefore, when member 375 is axially shifted by control lever 424 away from member 18, fingers 376 disengage from flange 374, while lug 384 engages a lug 383 on extension 381 of a belt-driven pulley 379. Drive is then transmitted to member 18 through frictional engagment only with drum 373. Constant torque mode.-A friction clutch collar 386 is keyed to, and slidable on, extension 381 and has a wire 388 retained in groove 389 with an end forming a clutch finger 392. Therefore, with member 375 positioned with fingers 376 engaging flange 374, when collar 386 as slid away from member 375 by control lever 431, clutch finger 392 engages a lug 393 of the member. The drive of pulley 379 is then transmitted directly to member 18 through the constant friction torque between wire 388 and groove 389. Free rotation mode.-With collar 386 and member 375 bolts displaced towards member 18, no drive is transmitted to drum 373 and member 18, and these may rotate freely on shaft 371. The spindle assembly is of use in a projector as disclosed in co-pending Application No. 55365/68 during reverse winding, the weight dependent mode being applicable to film supplied from a cartridge, and the constant torque mode being applicable to film supplied from a heavy reel.
GB55364/68A 1967-11-24 1968-11-21 Spindle for motion picture projector Expired GB1247058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68557767A 1967-11-24 1967-11-24

Publications (1)

Publication Number Publication Date
GB1247058A true GB1247058A (en) 1971-09-22

Family

ID=24752800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55364/68A Expired GB1247058A (en) 1967-11-24 1968-11-21 Spindle for motion picture projector

Country Status (4)

Country Link
US (1) US3468498A (en)
AT (1) AT302819B (en)
CH (1) CH489817A (en)
GB (1) GB1247058A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT281599B (en) * 1968-10-04 1970-05-25 Eumig Safety device on cinematographic devices with a threading mechanism
NL6914934A (en) * 1968-10-04 1970-04-07
US3601334A (en) * 1969-05-15 1971-08-24 Eastman Kodak Co Review mechanism for self-threading motion picture projectors
DE2033582A1 (en) * 1969-07-16 1971-02-25 Vockenhuber Karl Recording or playback device
DE1947149A1 (en) * 1969-09-18 1971-04-01 Silma Spa Motion picture projector
JPS50927B1 (en) * 1969-09-22 1975-01-13
US3672276A (en) * 1970-02-24 1972-06-27 Polaroid Corp Film container
US3734427A (en) * 1970-08-06 1973-05-22 Eastman Kodak Co Adjustable spindle arm for motion picture projectors
US3689008A (en) * 1971-05-03 1972-09-05 Eastman Kodak Co Device for adjusting a web-advancing mechanism
US3877656A (en) * 1972-03-03 1975-04-15 Canon Kk Reel supporting device in instruments loaded with reels
US4767079A (en) * 1985-04-05 1988-08-30 Minolta Camera Kabushiki Kaisha Roll film carrier for reader or reader printer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2973913A (en) * 1956-09-28 1961-03-07 Paillard Sa Mechanism for driving a spool of a cinematographic projector
US2990126A (en) * 1958-10-09 1961-06-27 Bell & Howell Co Film supplying apparatus
US3074662A (en) * 1961-03-20 1963-01-22 Richmond Res Corp Motion picture projector drive mechanism
DE1188936B (en) * 1964-06-03 1965-03-11 Bauer Eugen Gmbh Film projector that can be switched to forward or backward projection, as well as to motorized rewinding of the film

Also Published As

Publication number Publication date
CH489817A (en) 1970-04-30
US3468498A (en) 1969-09-23
AT302819B (en) 1972-10-25

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