Hand crank generator-powered rotary slide projector

In a projector having a housing, a frame mounted in said housing, said frame having means therein defining an upwardly open pocket for removably receiving a transparency carrying disc therein having perforations for cooperation with feeding means and having evenly spaced circumferentially arranged transparencies mounted therein, a feeding lever pivotally mounted in said frame for partial rotation about an axis coincident with the center of the disc and having means thereon for successively engaging the perforations in said disc to bring the transparencies mounted in said disc to a desired position, said housing further comprising a source of illumination mounted therein for enabling illumination of said transparency when it is in said desired position and a lens means for projecting an image of said illuminated positioned transparency, said frame being interposed between said illumination source and said lens means, said projector further comprising means on said frame defining a track extending in a plane parallel to the plane of the received disc, said feeding lever comprising a slide, said slide comprising a portion engaged in said track whereby said slide is guided for sliding movement from end to end of said track, said slide further comprising an engageable portion projecting from said frame whereby said slide may be depressed toward the lower end of said track, spring means for returning the slide to the upper end of said track when said slide is engaged and depressed and subsequently released, and means interconnecting said lever and said slide for translating movement of said slide into rotary movement of said lever to thereby rotate said disc to a different desired position for interposing a different one of said transparencies in said desired position between said illumination source and said lens means for projecting said different transparency;

• the improvement comprising hand crank operated generator means mounted in said housing, said generator means comprising a stator coil means capable of having a current induced therein and a magnetic rotor means rotatable within said stator coil means for producing a changing magnetic field across said stator coil means due to said rotation for inducing said current therein, said stator coil means being electrically connected to said illumination source for providing said induced current to said illumination source for enabling said illumination of said positioned transparency, crank means mechanically connected to said rotor means for enabling said rotation thereof, and gear means drivingly connected to said rotor means for enabling simultaneous rotation therewith in response to rotation of said rotor means by said crank means, said gear means having a finger means mounted thereon for simultaneous rotation therewith, said finger means bearing gear means being mounted in said housing with said finger means being in mechanical alignment with said slide means engageable portion for depressing said slide upon engagement therewith as said gear means is rotated, said slide means engageable portion having means thereon for enabling said finger means to disengage from said slide means during rotation of said gear means as said slide means approaches the lower end of said track whereby said spring means may return said slide to said upper end for subsequent reengagement by said finger means upon completion of a cycle of rotation of said gear means for changing said positioned transparency, said rotation of said crank means both providing current to illuminate said positioned transparency as well as changing said positioned transparency to a different one of said transparencies.