Filmstrip adapter for slide projector

Claim 2

For use with a slide projector of the type including an indexable slide carrier and a slide carrier indexing mechanism, an adapter mountable on said projector for enabling the projector to receive and transport filmstrip for projection, said adapter comprising: means for receiving filmstrip; a projection station; means operable for transporting received filmstrip past said projection station; and means for interconnecting said transporting means and the projector indexing mechanism and for operating said transporting means in response to operation of the projector indexing mechanism.

Claim 3

For use with a slide projector of the type which includes (1) means for receiving a projection lens assembly for movement along the projector''s optical axis between a first set of focusing positions and (2) means for so moving such a received projection lens assembly to focus the projected image, an adapter mountable on such a projector for enabling said projector to receive filmstrip and project images therefrom, said adapter comprising: means for receiving a projection lens assembly for movement between a second set of positions spaced from said first set of positions; and means For coupling the lens assembly moving means of the projector to a projection lens assembly in said second set of positions to focus such a projection lens assembly, said coupling means comprising (1) a first portion arranged to be engaged and displaced by the lens assembly moving means of the projector and (2) a second portion arranged to engage a received projection lens assembly at said second set of positions, said second portion being displaceable in response to displacement of said first portion for moving the received lens assembly along said second set of positions.

Claim 4

For use with a slide projector of the type which includes (1) means for receiving a projection lens assembly for movement along the projector''s optical axis between a first set of focusing positions and (2) means for so moving such a received projection lens assembly to focus the projected image, an adapter mountable on such a projector for enabling said projector to receive filmstrip and project images therefrom, said adapter comprising: means for receiving a projection lens assembly for movement between a second set of positions spaced from said first set of positions; and means For coupling the lens assembly moving means of the projector to a projection lens assembly in said second set of positions to focus such a projection lens assembly, said coupling means comprising (1) a first portion arranged to be engaged and displaced by the lens assembly moving means of the projector and (2) a second portion arranged to engage a received projection lens assembly at said second set of positions, said second portion being displaceable in response to displacement of said first portion for moving the received lens assembly along said second set of positions.

Claim 5

An adapter according to claim 2 wherein: the lens assembly moving means of the projector includes a displaceable gear, and said first portion is a gear engageable by the projector gear and displaceable in response to displacement of the projector gear.

Claim 6

An adapter according to claim 3 wherein: the projection lens assembly received in said second set of positions includes a gear on the exterior thereof, and said second portion comprises a claw engageable with the lens assembly gear for displacing the lens assembly in response to displacement of the projector gear.

Claim 7

For use with a slide projector of the type which includes (1) means for receiving a slide tray, (2) an operating station and (3) a mechanism for indexing the tray to present slides in sequence to the operating station, an adapter connectable with the projector for enabling the projector to receive and advance filmstrip and to project images therefrom, said adapter comprising: means for connecting said adapter to the projector; means defining a projection position; means for receiving and engaging filmstrip and for advancing the filmstrip past said projection position; a linkage coupled to said advancing means, said linkage being engageable with the projector indexing mechanism and displaceable in response to operation of the indexing mechanism for operating said advancing means; and means for guiding said linkage into operative engagement with the indexing means in response connection of said adapter to the projector.

Claim 8

For use with a slide projector of the type which includes (1) means for receiving a slide tray, (2) an operating station and (3) a mechanism for indexing the tray to present slides in sequence to the operating station, an adapter connectable with the projector for enabling the projector to receive and advance filmstrip and to project images therefrom, said adapter comprising: means for connecting said adapter to the projector; means defining a projection position; means for receiving and engaging filmstrip and for advancing the filmstrip past said projection position; a linkage coupled to said advancing means, said linkage being engageable with the projector indexing mechanism and displaceable in response to operation of the indexing mechanism for operating said advancing means; and means for guiding said linkage into operative engagement with the indexing means in response connection of said adapter to the projector.

Claim 9

For use with a projector of the type which receives a slide carrier and includes means for indexing a received slide carrier to present slides in sequence to an operating station, and further includes a mount for receiving a projection lens assembly, an adapter for enabling the projector to advance filmstrip past a projection position and to project images from the filmstrip, said adapter comprising: means for attaching said adapter to the projector lens mount; means for receiving filmstrip of the type which includes perforations sequentially engageable for transporting the filmstrip; a projection station; sprocket wheel means rotatable for engaging the perforations of received filmstrip and for transporting the filmstrip past said projection station; and a linkage for rotating said sprocket wheel means, said linkage including a connecting member engageable by the projector indexing means, and means for rotating said sprocket wheel by an amount sufficient to transport a length of film equal to one frame past said projection station in response to operation of the projection indexing means.

Claim 10

For use with a projector of the type which receives a slide carrier and includes means for indexing a received slide carrier to present slides in sequence to an operating station, and further includes a mount for receiving a projection lens assembly, an adapter for enabling the projector to advance filmstrip past a projection position and to project images from the filmstrip, said adapter comprising: means for attaching said adapter to the projector lens mount; means for receiving filmstrip of the type which includes perforations sequentially engageable for transporting the filmstrip; a projection station; sprocket wheel means rotatable for engaging the perforations of received filmstrip and for transporting the filmstrip past said projection station; and a linkage for rotating said sprocket wheel means, said linkage including a connecting member engageable by the projector indexing means, and means for rotating said sprocket wheel by an amount sufficient to transport a length of film equal to one frame past said projection station in response to operation of the projection indexing means.

Claim 11

An adapter according to claim 6 further including means for engaging the projector and for guiding said connecting member into operative engagement with the projector indexing means in response to attachment of said adapter to the projector lens mount.

Claim 12

An adapter according to claim 6 further comprising: a film gate member defining an aperture through which light can be projected from the projector and through a frame of film at said projection station; a clutch coupling said sprocket wheel rotating means and said sprocket wheel; and means for setting said adapter in a first condition wherein said sprocket wheel rotating means and said sprocket wheel are coupled in driving engagement by said clutch, and for setting said adaPter in a second condition wherein said clutch is disengaged from driving engagement from said sprocket wheel whereby said sprocket wheel can be rotated independently of said rotating means for framing filmstrip in said projection station.

Claim 13

An adapter according to claim 6 further comprising: a front gate member for engaging and holding filmstrip flat in said projection station; and means for disengaging said front gate member from the filmstrip in response to the rotation of said sprocket wheel.

Claim 14

An adapter according to claim 6 wherein the projector with which said adapter is to be used further includes means for focusing a projection lens assembly receivable in the lens mount, said adapter further comprising: a lens mount for receiving a projection lens assembly and defining a path along which a received projection lens assembly is displaceable for focusing the assembly; and means for coupling the projector focusing means and a projection lens assembly received in said adapter lens mount, whereby the projection lens assembly received by said adapter is displaced along said path in response to operation of the projector focusing means.

Claim 15

An adapter according to claim 6 further comprising means for manually rotating said sprocket wheel to transport filmstrip in said adapter.