GB1424537A - Adjustable speed projector - Google Patents

Adjustable speed projector

Info

Publication number
GB1424537A
GB1424537A GB368873A GB368873A GB1424537A GB 1424537 A GB1424537 A GB 1424537A GB 368873 A GB368873 A GB 368873A GB 368873 A GB368873 A GB 368873A GB 1424537 A GB1424537 A GB 1424537A
Authority
GB
United Kingdom
Prior art keywords
film
advance
energizing
claw
solenoid
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
GB368873A
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.)
CARAWAY G C
Original Assignee
CARAWAY G C
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 CARAWAY G C filed Critical CARAWAY G C
Priority to GB368873A priority Critical patent/GB1424537A/en
Publication of GB1424537A publication Critical patent/GB1424537A/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
    • G03B19/00—Cameras
    • G03B19/18—Motion-picture cameras

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Abstract

1424537 Cinematography G C CARAWAY 24 Jan 1973 3688/73 Heading G2E Motion picture projection includes a light source, projection lens, a continuously running shutter interrupting the light path at a first rate, a source of film pause advance signals having a second rate and means for advancing the film in response to the advance signals at a time corresponding to the next interruption of the light path. The film advance as shown, is by means of a ratchet claw driven by a single cycle drive. As shown in Fig. 2 the film advance pulses energize solenoid 29 by energizing relay 62 to close contact 70. The relay 62 is closed by closing contacts 60, 63 by means of conductive shutter sector 65. Fig. 12 shows another circuit for energizing a film advance solenoid. Fig. 9 shows the intermittent film claw 158 which has a ratchet type head which engages the sprocket holes on the down stroke and slides over them on the up-stroke. The claw is driven by a cam 157 having a dwell 157b holding it clear of continuously rotating wheel 154. On energizing solenoid 162 the cam 157 is moved into contact with the wheel 154.
GB368873A 1973-01-24 1973-01-24 Adjustable speed projector Expired GB1424537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB368873A GB1424537A (en) 1973-01-24 1973-01-24 Adjustable speed projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB368873A GB1424537A (en) 1973-01-24 1973-01-24 Adjustable speed projector

Publications (1)

Publication Number Publication Date
GB1424537A true GB1424537A (en) 1976-02-11

Family

ID=9763074

Family Applications (1)

Application Number Title Priority Date Filing Date
GB368873A Expired GB1424537A (en) 1973-01-24 1973-01-24 Adjustable speed projector

Country Status (1)

Country Link
GB (1) GB1424537A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee