GB1373240A - Web drive arrangements - Google Patents

Web drive arrangements

Info

Publication number
GB1373240A
GB1373240A GB5349671A GB5349671A GB1373240A GB 1373240 A GB1373240 A GB 1373240A GB 5349671 A GB5349671 A GB 5349671A GB 5349671 A GB5349671 A GB 5349671A GB 1373240 A GB1373240 A GB 1373240A
Authority
GB
United Kingdom
Prior art keywords
reel
film
shaft
drive
reels
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
GB5349671A
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of GB1373240A publication Critical patent/GB1373240A/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
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading
    • G03B21/111—Projectors with built-in or built-on screen for microfilm reading of roll films
    • G03B21/113—Handling roll films
    • 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)
  • Advancing Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

1373240 Film reel drive RICOH KK 18 Nov 1971 [21 Dec 1970] 53496/71 Heading G2E A drive mechanism for a reel to reel film apparatus includes a driving mechanism (not shown but connected to shaft 57a) coupled to two reels 13, 41 whose mounting shafts 11, 43 include one way clutches which transmit the drive only when the particular reel is taking up film and which re-engage the free-wheeling reel when the drive stops. As shown shafts 11, 43 are coupled to shaft 57a by pulleys and belts. These may be replaced by gears. The driving mechanism may be a reversible D.C. motor or an A.C. motor with reversing gear. Fig.6 shows the shaft 11 with its associated clutches, the assembly on shaft 43 is substantially the same, Fig.7 (not shown). The belt drive 61 applied to pulley 60 is transmitted by one way clutch 78 to the shaft 11 only when the reel 13 is taking up film. When the reel 13 is supplying film a brake shoe 77 acting on a brake wheel 75 provides a retarding force to the freewheeling reel 13 via one way clutch 74 (acting oppositely to clutch 78). This helps prevent the film slacking between the reels 13, 41. Such a mechanism can be used in a device such as that disclosed in Specification 1291668.
GB5349671A 1970-12-21 1971-11-18 Web drive arrangements Expired GB1373240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11604870A JPS546891B1 (en) 1970-12-21 1970-12-21

Publications (1)

Publication Number Publication Date
GB1373240A true GB1373240A (en) 1974-11-06

Family

ID=14677403

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5349671A Expired GB1373240A (en) 1970-12-21 1971-11-18 Web drive arrangements

Country Status (5)

Country Link
US (1) US3771745A (en)
JP (1) JPS546891B1 (en)
CA (1) CA952887A (en)
DE (1) DE2162624C3 (en)
GB (1) GB1373240A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702434A (en) * 1986-05-19 1987-10-27 Roger Brauer Tape cassette arrangement
US5823454A (en) * 1996-06-26 1998-10-20 Eastman Kodak Company Film transport apparatus
US9879737B2 (en) 2015-12-07 2018-01-30 International Business Machines Corporation Interlock braking system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705599A (en) * 1950-04-29 1955-04-05 Houston Fearless Corp Reel clutch
US3235197A (en) * 1961-06-06 1966-02-15 Western Union Telegraph Co Motor driven tape scanner and rewinder

Also Published As

Publication number Publication date
JPS546891B1 (en) 1979-04-02
CA952887A (en) 1974-08-13
DE2162624B2 (en) 1978-08-10
DE2162624C3 (en) 1979-04-05
US3771745A (en) 1973-11-13
DE2162624A1 (en) 1972-06-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee