GB515368A - Driving arrangement for film spools in cinematograph machines - Google Patents

Driving arrangement for film spools in cinematograph machines

Info

Publication number
GB515368A
GB515368A GB1609938A GB1609938A GB515368A GB 515368 A GB515368 A GB 515368A GB 1609938 A GB1609938 A GB 1609938A GB 1609938 A GB1609938 A GB 1609938A GB 515368 A GB515368 A GB 515368A
Authority
GB
United Kingdom
Prior art keywords
pulley
link
spool
driving arrangement
clutch
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
GB1609938A
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.)
BERNARD REES DAVIES
British Thomson Houston Co Ltd
Original Assignee
BERNARD REES DAVIES
British Thomson Houston 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 BERNARD REES DAVIES, British Thomson Houston Co Ltd filed Critical BERNARD REES DAVIES
Priority to GB1609938A priority Critical patent/GB515368A/en
Publication of GB515368A publication Critical patent/GB515368A/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
    • G03B21/43—Driving mechanisms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

515,368. Kinematograph apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., and DAVIES, B. R. May 30, 1938, No. 16099. [Class 97 (i)] In spool-driving means wherein the spool spindle 5 is carried by a link 6 mounted on a pivot 7 and supported by a driving belt 2 passing round a pulley 4, increase in the weight of the film on the spool thus increasing the tension of the belt, a friction clutch between the pulley 4 and spindle 5 is controlled by a cam member rotated by a link 14 pivoted to a link 15 carried by a fixed pivot 16. The clutch comprises a disc 7, Fig. 2, having a friction surface 8 pressed against the pulley 4 by a spring 11, and the cam surface 10 of a member 9, also engaging the pulley 4, engages a pin 13 on a member 12, so that rotation of the member 9 by the link 14 varies the clutch pressure. U.S.A. Specification 2,099,299 is referred to.
GB1609938A 1938-05-30 1938-05-30 Driving arrangement for film spools in cinematograph machines Expired GB515368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1609938A GB515368A (en) 1938-05-30 1938-05-30 Driving arrangement for film spools in cinematograph machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1609938A GB515368A (en) 1938-05-30 1938-05-30 Driving arrangement for film spools in cinematograph machines

Publications (1)

Publication Number Publication Date
GB515368A true GB515368A (en) 1939-12-04

Family

ID=10071170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1609938A Expired GB515368A (en) 1938-05-30 1938-05-30 Driving arrangement for film spools in cinematograph machines

Country Status (1)

Country Link
GB (1) GB515368A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523447A (en) * 1982-09-30 1985-06-18 Stiwa-Fertigungstechnik Sticht Gesellschaft M.B.H. Wire coiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523447A (en) * 1982-09-30 1985-06-18 Stiwa-Fertigungstechnik Sticht Gesellschaft M.B.H. Wire coiler

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