JPS5789746A - Projector - Google Patents

Projector

Info

Publication number
JPS5789746A
JPS5789746A JP16569580A JP16569580A JPS5789746A JP S5789746 A JPS5789746 A JP S5789746A JP 16569580 A JP16569580 A JP 16569580A JP 16569580 A JP16569580 A JP 16569580A JP S5789746 A JPS5789746 A JP S5789746A
Authority
JP
Japan
Prior art keywords
worm
advance
film
film advance
claw
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.)
Pending
Application number
JP16569580A
Other languages
Japanese (ja)
Inventor
Kenichi Atsumi
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.)
SANWA DENKI KK
Original Assignee
SANWA DENKI KK
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 SANWA DENKI KK filed Critical SANWA DENKI KK
Priority to JP16569580A priority Critical patent/JPS5789746A/en
Publication of JPS5789746A publication Critical patent/JPS5789746A/en
Pending 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)
  • Projection Apparatus (AREA)

Abstract

PURPOSE:To switch film advance states without varying a film loop, by providing a subordinate shaft which turns at a high speed separately from a main shaft which drives a film advance claw. CONSTITUTION:In a normal projection state, a worm 25 provided to a main shaft rotates by a motor 20 through a belt 21 to operate on a film advance claw 7 for a film advance, and also to drive continuous film advance sprocket shafts 40 and 42 through a worm gear 35 meshing with the worm 25. For a film advance or fast rewinding, a solenoid 51 is put in operation to couple the worm gear 35 with the worm 29 of a high-speed subordinate shaft, and the claw is disengaged from a film through a lever 61, so that the fast advance is made only by the sprocket shafts 40 and 42. When solenoids 50 and 70 are operated simultaneously, the worm gear 35 engages with neither the worm 25 nor 29, thereby holding a manual advance in readiness.
JP16569580A 1980-11-25 1980-11-25 Projector Pending JPS5789746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16569580A JPS5789746A (en) 1980-11-25 1980-11-25 Projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16569580A JPS5789746A (en) 1980-11-25 1980-11-25 Projector

Publications (1)

Publication Number Publication Date
JPS5789746A true JPS5789746A (en) 1982-06-04

Family

ID=15817284

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16569580A Pending JPS5789746A (en) 1980-11-25 1980-11-25 Projector

Country Status (1)

Country Link
JP (1) JPS5789746A (en)

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