GB155793A - Improvements relating to kinematograph apparatus - Google Patents

Improvements relating to kinematograph apparatus

Info

Publication number
GB155793A
GB155793A GB14502/20A GB1450220A GB155793A GB 155793 A GB155793 A GB 155793A GB 14502/20 A GB14502/20 A GB 14502/20A GB 1450220 A GB1450220 A GB 1450220A GB 155793 A GB155793 A GB 155793A
Authority
GB
United Kingdom
Prior art keywords
wheel
toothed wheel
shaft
engagement
feed
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
GB14502/20A
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.)
Petra AG fuer Elektro Mechanik
Original Assignee
Petra AG fuer Elektro Mechanik
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 Petra AG fuer Elektro Mechanik filed Critical Petra AG fuer Elektro Mechanik
Publication of GB155793A publication Critical patent/GB155793A/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
    • G03B21/44—Mechanisms transmitting motion to film-strip feed; Mechanical linking of shutter and intermittent feed
    • G03B21/46—Mechanisms transmitting motion to film-strip feed; Mechanical linking of shutter and intermittent feed affording adjustment for framing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

155,793. Petra Akt.-Ges. f³r Elektromechanik. Dec. 22, 1919, [Convention date]. Kinematograph apparatus.-Relates to a filmcentring device of the kind in which the feedwheel, a, frictionally-driven from its shaft b, is fitted with a toothed wheel f having a different number of teeth from an adjacent toothed wheel e fixed on the shaft, and a toothed wheel engaging both the above wheels e, f is adapted to effect rotation of the feed-wheel relatively to its shaft. Such a device is employed with a feed-wheel moved by Maltese-cross mechanism. The toothed wheel h, adapted to engage the wheels e, f, is normally held out of engagement by a spring i, and is moved into engagement by operating a hand-wheel k.
GB14502/20A 1919-12-22 1920-05-27 Improvements relating to kinematograph apparatus Expired GB155793A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE155793X 1919-12-22

Publications (1)

Publication Number Publication Date
GB155793A true GB155793A (en) 1921-03-17

Family

ID=5677311

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14502/20A Expired GB155793A (en) 1919-12-22 1920-05-27 Improvements relating to kinematograph apparatus

Country Status (1)

Country Link
GB (1) GB155793A (en)

Similar Documents

Publication Publication Date Title
GB155793A (en) Improvements relating to kinematograph apparatus
GB154338A (en) Improvements in the driving mechanism of lace and other machines
GB405149A (en) Improvements in and relating to the geneva cross mechanism of turret lathes
GB185911A (en) Improvements connected with tooth gearing
GB853377A (en) Device for pedal starting of motor-cycle engines
GB171473A (en) Improvements relating to grinding and other machines
GB181184A (en) A device to facilitate the adjustment, removal, reversal, and replacement of double-sprocketed driving wheels of velocipedes, motor cycles, and the like
GB200987A (en) A device to facilitate the adjustment, removal and replacement of the driving wheels of velocipedes, motor cycles, and the like
GB258601A (en) Improvements in and relating to rack and pinion gearing
GB678022A (en) Improvements in intermittent driving mechanisms
GB191307731A (en) A Setting Mechanism for Calculating Machines.
GB280730A (en) Improvements in locating devices for control levers
GB146459A (en) Improved process and apparatus for compensating errors in pitch in machines for milling and planing toothed wheels
GB368666A (en) Control device for hydraulic or pneumatic presses, particularly for injection-casting machines, operated by hydraulic or pneumatic pressure
GB134126A (en) Improvements in Stop Cylinder Printing Presses.
GB247893A (en) Improvements relating to the grinding of gear wheel teeth
GB191401326A (en) Improvements in and relating to Calculating Machines.
GB201565A (en) Improvements in or relating to hank dyeing and like machines
GB452561A (en) Improvements in or relating to film winding means for kinematograph projectors
GB153282A (en) Improvements in actuating means for machine platens
GB233331A (en)
GB188490A (en) A new self driving motor
GB191103137A (en) Improvements in and relating to Means for Operating Tramway and like Points and Switches.
GB495623A (en) Improvements in or relating to carbon arc lamps
GB714489A (en) Method and apparatus for hardening serrated articles