GB1431542A - Film feeding attachment for use with an overhead projector - Google Patents

Film feeding attachment for use with an overhead projector

Info

Publication number
GB1431542A
GB1431542A GB1680472A GB1680472A GB1431542A GB 1431542 A GB1431542 A GB 1431542A GB 1680472 A GB1680472 A GB 1680472A GB 1680472 A GB1680472 A GB 1680472A GB 1431542 A GB1431542 A GB 1431542A
Authority
GB
United Kingdom
Prior art keywords
frame
feeding attachment
overhead projector
motor
film feeding
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
GB1680472A
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.)
Graeme J H
Original Assignee
Graeme J H
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 Graeme J H filed Critical Graeme J H
Priority to GB1680472A priority Critical patent/GB1431542A/en
Publication of GB1431542A publication Critical patent/GB1431542A/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
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

1431542 Overhead projectors J H GRAEME 10 July 1973 [12 April 1972] 16804/72 Heading G2J A film-feeding attachment for an overhead projector comprises a frame 11, 12, 13 having at each end a detachable motor-driven roller 20. The frame has rubber suction feet 24 so that it can be mounted on the screen of the projector (26,) Fig. 2 (not shown). One or both rollers may be spring- urged into contact with a reversible motor 15 mounted in a casing 14 at one side of the frame, the motor having a remote control arrangement 18. The film may be arranged as a carrier with open lateral seams, so that detachable sheets can be mounted therein Fig. 3 (not shown).
GB1680472A 1972-04-12 1972-04-12 Film feeding attachment for use with an overhead projector Expired GB1431542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1680472A GB1431542A (en) 1972-04-12 1972-04-12 Film feeding attachment for use with an overhead projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1680472A GB1431542A (en) 1972-04-12 1972-04-12 Film feeding attachment for use with an overhead projector

Publications (1)

Publication Number Publication Date
GB1431542A true GB1431542A (en) 1976-04-07

Family

ID=10083964

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1680472A Expired GB1431542A (en) 1972-04-12 1972-04-12 Film feeding attachment for use with an overhead projector

Country Status (1)

Country Link
GB (1) GB1431542A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557986A1 (en) * 1984-01-09 1985-07-12 Lallier Eric Automatic film handler for back projector with timer
WO1985004264A1 (en) * 1984-03-14 1985-09-26 Retest Materials Pty. Limited An overhead transparency preparation apparatus
DE3506968A1 (en) * 1984-04-13 1985-10-17 Demolux Gmbh & Co Kg, 6070 Langen Overhead projector
DE3413995A1 (en) * 1984-04-13 1985-10-17 Demolux Gmbh & Co Kg, 6070 Langen Overhead projector
GB2209611A (en) * 1987-06-19 1989-05-17 British Aerospace Remotely controlled optical test equipment
US4942411A (en) * 1988-06-27 1990-07-17 Polston Steve A Automatic overlay feed apparatus for an overhead projector
US4944586A (en) * 1989-11-30 1990-07-31 E. I. Du Pont De Nemours And Company Automated transparency organizer
US5214459A (en) * 1987-12-30 1993-05-25 Educatek Oy Overhead projectors
GB2266784A (en) * 1992-05-09 1993-11-10 David Bothamley An automatic delivery system for overhead projectors
WO1995022784A1 (en) * 1994-02-22 1995-08-24 Blake George B Overhead projector presentation system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557986A1 (en) * 1984-01-09 1985-07-12 Lallier Eric Automatic film handler for back projector with timer
WO1985004264A1 (en) * 1984-03-14 1985-09-26 Retest Materials Pty. Limited An overhead transparency preparation apparatus
DE3506968A1 (en) * 1984-04-13 1985-10-17 Demolux Gmbh & Co Kg, 6070 Langen Overhead projector
DE3413995A1 (en) * 1984-04-13 1985-10-17 Demolux Gmbh & Co Kg, 6070 Langen Overhead projector
GB2209611A (en) * 1987-06-19 1989-05-17 British Aerospace Remotely controlled optical test equipment
US5214459A (en) * 1987-12-30 1993-05-25 Educatek Oy Overhead projectors
US4942411A (en) * 1988-06-27 1990-07-17 Polston Steve A Automatic overlay feed apparatus for an overhead projector
US4944586A (en) * 1989-11-30 1990-07-31 E. I. Du Pont De Nemours And Company Automated transparency organizer
GB2266784A (en) * 1992-05-09 1993-11-10 David Bothamley An automatic delivery system for overhead projectors
WO1995022784A1 (en) * 1994-02-22 1995-08-24 Blake George B Overhead projector presentation system

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees