Abstract: A slide scanner as a stand-alone device that is able to function without a computer and comprises a magazine guide for different slide magazines, such as universal, LKM, CS and/or Paximat magazines.

Abstract: A projection device for projecting images on a surface of the device includes an outer housing having a front translucent screen, a projection module frame mounted on an inner surface of the outer housing, and a projection roller frame supported by the projection module frame. The projection roller frame includes first and second spaced apart rollers rotatable respectively on two opposite cylindrical ends integrally formed on a lampshade. A cylindrical projection film is held between the first and second rollers. A light source is mounted inside the lampshade so that an image formed on the projection film can be projected on the front translucent screen by the light source. The device further includes a gear mechanism for driving the rollers, a position-limiting mechanism, and a speaker.

Abstract: To reduce the thickness of a digital light projector (DLP), a circulating tape having sequences of red, green and blue segments is used instead of a color wheel to produce a color image.

Abstract: A transparent film projector includes a projector frame provided inside with all the components. A plurality of chain wheels are provided inside the projector frame for an annular chain strap to extend around. The annular chain strap is provided at the inner side with plural extension plates respectively having an extension strip fixed at the outer side and an orienting member secured at the inner side, and the extension strip has its outer end clasped by a spring. The orienting member is positioned at the inner side of an orienting rail, which guides the orienting member to move in a fixed direction so as to make the transparent films move smoothly. Besides, each transparent film has its opposite ends respectively hooked by the spring, so it can be flattened to move smoothly and replaced conveniently.

Abstract: A gobo having linear motion is inserted to the narrow iris slot of a conventional ellipsoidal stage light. The linear moving pattern includes a housing, a drive roller and a motor, a return roller, and an endless pattern loop. The housing has a narrowed end for protruding into the instrument at the iris slot and holding the return roller on one side of the light. The housing has a broad end for mounting outside of the ellipsoidal stage light for holding the drive roller and motor at the other side of the light. The broad end of the housing has two spring-biased hinged clamps for clamping the linear moving pattern into a single unitary linear moving pattern iris insert. A first motor clamp holds the drive roller and motor in place. A second pattern clamp tensions and dimensions the endless pattern loop for extension into and out of the iris slot of the ellipsoidal light. The endless pattern loop is first threaded to the return roller and the return roller mounted to the narrow end of the housing.

Abstract: A projector device includes a light device disposed in a housing, a camera barrel disposed in front of the light device, and a tape disposed around the light device and movable around the light device and having a portion disposed between the light device and the camera barrel for allowing the tape to be projected by the light device continuously when the tape is rotated around the light device. A motor may be used to move the tape around the light device. The housing includes a number of rods, and the tape is engaged around the rods.

Abstract: An apparatus and method are disclosed for viewing back lit and front lit depth images having different depth image scenes being projected at different viewer orientations. A rotatable frame is mounted to a stand for rotation about an axis, wherein the frame includes at least one viewing port. The frame includes a retainer for securing a depth image to the frame. An interior of the frame may be back lit to illuminate the viewing port. Alternatively, a projection system illuminates a retained depth image with an illuminating light at an angle of less than approximately 45.degree.. The frame is rotated about the axis by a drive assembly to present at least one cycle of information from the depth image to a stationary viewer.

Abstract: A drive assembly is constituted by a strip (10) and three or more parallel and rotatable supports (12, 16, 22) around which the strip (10) is wrapped. At least two of the rotatable supports (22) are linked together for common movement, for example by a movable holder in the form of a light box (20) carrying a series of light bulbs (50) while at least one of the rotatable supports (12, 16) is stationary.

Abstract: Device for the successive display of pictures in recreational machines, the device of which consists of a structure or frame which serves as a support for a series of rollers consisting of two synchronised drag rollers, consecutive and having a fixed position (2 and 2) and at least one removable guide roller (4), the position of which can be adjusted. The device may also include at least one fixed-position guide roller (5).

Abstract: An apparatus and method are disclosed for viewing depth images having different depth image scenes being projected at different viewer orientations. A frame is rotatably mounted to a stand for rotation about an axis, wherein the frame includes at least one viewing port. An interior of the frame is back lit to illuminate the viewing port. The frame includes a retainer for securing a depth image to the frame. The frame is rotated about the axis by a drive assembly to present at least one cycle of information from the depth image to a stationary viewer.

Abstract: A manually operated toy film viewer of simple design for viewing an 8 millimeter film loop contained within the housing of the viewer. In operating the toy film viewer, the loop of 8 millimeter film is controllably moved past a viewing aperture by a manual crank handle which is rotatably connected to one side of the hollow housing. The apparatus includes a feed sprocket, a spring biased shutter, a simple optical lens and a translucent screen disposed within a small window which is located opposite the viewing aperture and in close proximity with the film loop. Both the drive sprocket and the shutter of the film viewer are operated by the hand crank which car be easily manipulated by the child to controllably advance the film past the viewing aperture.

Abstract: An automatic overlay feed apparatus (10) for feeding projectable overlays to the object area (16) of an overhead projector (12). The apparatus (10) comprises a frame (20) for being supported on an overhead projector (12) and scrolling means, including a first winding shaft (36) and a second winding shaft (38) for moving an overlay scroll (24) defining a plurality of sequentially arranged projectable overlay sheets (42) across the object area (16) of the projector (12) to allow selective positioning of such projectable overlay sheets (42) on the object area (16). The apparatus (10) also includes motor means for selectively rotating at least one of the winding shafts (36, 38), and remote control means for controlling the operation of the motor means from a position remote from the projector (12).

Abstract: A slide projector system adapted to the projection of a continuous train of slides. The train of slides moves in the form of a slide magazine across the body of the projector parallel to the plane of projection transported by a mechanism that assures movement from left to right in the forward direction and from right to left in the reverse direction. The train of slides moves from an open rectangular tray temporarily attached to the body of the projector on one side into another tray temporarily attached to the opposite side. The train of slides comprises an interconnected series of pockets that are naturally folded in an accordion position from which they unfold in traversing the body of the projector and fold again naturally upon leaving the projector body. The present invention includes the slide projector, the left and right slide trays, the slide train transport mechanism and the accordion slide magazine.

Abstract: A method and a device for presentation of information on a plurality of sheetshaped information carriers (5) which are connected to each other in a continuous series of the sheets which are folded relative each other so that the series of sheets extends zig-zag like and forms in a storage position a pack of sheets in which the sheets are connected to each other and from which the sheets can be folded out for presentation of information on the sheets. One of the outer sheets (5) of the pack is placed with an interspace relative to the pack, which is substantially a multiple, larger than 1, of the width of each sheet between said folding lines. In this way at least two sheets at a time can be held unfolded on a base in said interspace for the purpose of presentation. The series of sheets can consecutively be brought over to the outer sheet, forming a new pack during a consecutive positioning of the sheets in the interspace for the presentation.

Abstract: An overhead projector transparency transport system uses a transparent platen 20 extending over projection window 11 and beyond both sides of projector 10. A transparent belt 80 made of a base web 84 and a pocket web 85, fused together to form a series of pockets, receives a sequence of transparencies 100, and transverse fold lines formed between pockets 81 allow belt 80 to fan fold. Pocket web 85 is fused to base web 84 at inturned edges 95 of an open side 96 of each pocket 81 to trap a transparency 100 within its pocket, once inserted. Platen 20 is positioned so that transparent belt 80 can advance across platen 20 from a fan-fold supply stack 82 next to projector 10 and proceed to an automatically formed take-up stack 83 next to the other side of projector 10.

Abstract: An improved audio-visual toy is provided by a housing assembly configured to simulate a portable television set. A magnetic deck assembly reads the signals on a magnetic tape element to produce an audio transmission that describes a story. Concurrently, the signals tell the user when to activate a pneumatic system that houses a clutch and ratchet system to advance a film element for producing a sequence of projected images that also describe the story.

Abstract: The subject matter of the invention is constituted by a projection apparatus for the projection of transparencies on to a screen. The transparencies are articulated together. One at a time the rows of transparencies are located between a light source and a lens, same being moved along the row of transparencies in order to project the transparencies in order on the screen. When the transparencies of one row have been projected, the chain is moved through one step in order to place the next row of transparencies in place of the former one in between the light source and the lens. The invention furthermore relates to a particularly convenient design by which a number of transparency rows may be chained together with articulating joints therebetween.

Abstract: A slide projector system includes a projector and a removable slide cartridge which encloses an endless belt for transporting slides along a generally horizontal pathway. The removable cartridge, when loaded into the projector, advances slides to a viewing gate for projection onto a screen or the like, wherein the viewing gate is associated with an access port in the cartridge to permit direct loading and removal of the slides thereby facilitating the instantaneous projection and viewing of the slides as they are loaded. In one preferred form, the slides are carried along an oblong pathway for presentation at a single viewing gate whereat a drive spindle and a slide catcher wheel cooperate to individually hold the slides. In another preferred form, an expandable endless belt carries the slides along a generally Y-shaped pathway for presentation at either of two separate viewing gates.

Abstract: The invention relates to a slide projector with automatic slide changer and stationary slide magazines (10,11) on each side of the optical pathway of the projector, the respective slide magazine (10,11) provided in the shortside with a feed and discharge opening for slide frames (8) which is located in the focal plane of the slide projector. Between the slide magazines (10,11) a slide frame transport device is located, which consists of two toothed belts (2,3) provided with external dog members (7) for transporting the slide frames (8) from one slide magazine (10) to the other (11), and vice versa. In the projection position of the slide projector support members (12,13 and, respectively, 16,17) facing to the toothed belts (2,3) are provided for the slide frames (8). Levers (20,21) are provided behind the toothed belts (2,3) directly in front of the respective slide magazine (10,11) for inserting the slide frames (8).

Abstract: A slide magazine insertable in a side opening in a slide projector and comprising a plastic body with a continuous rail having two elongated sidewalls and two arcuate endwalls, and a cross-plate giving the body an H-shaped transverse cross-section. A grooved drive shaft is rotatably mounted within one arcuate endwall, and a plurality of plastic slide holders are slidably mounted on the rail, each having a dovetail-like notch in its inner side receiving the rail, two detent fingers extending toward each other on the inner side of the rail, and a slotted slide-holding frame on the outer side. The magazine body is divided into relatively movable end sections that are urged together by a spring for pressing the stack of holders toward the shaft, and the track is shaped to tilt the holders toward the shaft for positive pick-up of the detent fingers by the grooves in the shaft, to feed the holders around the rail, the grooves and the fingers having mating V-shaped cross-sections.

Abstract: In order to decrease light beam projectors and avoid time consuming and tedious transferring and exchanging operations in the tire manufacturing process, a light beam projecting apparatus of the present invention for use in production of an endless rubberized cord fabric, comprises a light beam projector disposed in spaced and opposed relation with a tire building drum to wrap a band-formed rubberized cord fabric; an indicator assembly located in the vicinity of the light beam projector and interposed between the light projector and the tire building drum, the indicator assembly including an indicator film having a multiplicity of indicating lines spaced from each other in a direction parallel to the rotational axis of the tire building drum to be projected upon the peripheral surface of the tire building drum; and a focus lens assembly arranged between the tire building drum and the indicator assembly and including at least a focus lens in alignment with the light beam projected through the indicator film by

Abstract: A projector for continuously screening a strip of transparency film having perforated margins includes means for feeding said strip in a closed path defined by said feeding means. The feeding means comprise two endless conveyor belts which are spaced apart so as to support said perforated strip margins and which are each provided with at least one lug releasably engageable in a respective perforated margin with a snap fit for anchoring the two ends of the strip to the belts and forming a loop of film.

Abstract: A slide projector for use with magazines of the flexible type in which slides are supported for movement around a closed-loop path and are swingable one by one into and out of a slide-projection station about an axis defined by a rotary drive shaft. The magazine has individual clip-type slide-holding elements that slide along an endless path and have frames in which slides are held. A condensing lens is mounted and guided for movement from a normal operating position close to the slide-projection station and in the path of the slides, to a retracted position out of the path, with a combined reciprocating and swinging motion, and is moved back and forth by a rotary crank mechanism that is driven by the slide-feeding mechanism, to shift the lens rapidly out of and back into the operating position during each slide change, with a dwell in the retracted position for the change.

Abstract: Film strip projection device for the projection of endless film strip, especially slide film strips, which is passed along a film trap of a projection optics system, by a transport device which catches in the film perforation. The film strip is guided in a closed, essentially ring-form track, whose length is only a little shorter or equal to the length of the film strip.

Abstract: A film strip projector which is provided with synchronized audio accompaniment. A film strip is framed with respect to a projection aperture by a selectively operable framing device. Once the film strip is initially framed, the film strip is advanced frame by frame by a Geneva type film advance mechanism. The audio accompaniment is carried on a dual track audio tape, one track of which carries the audio message pertinent to a particular frame and the other track of which carries a control signal for the film drive mechanism. The Geneva type film drive mechanism comprises a pair of cooperating gears the second of which rotates only 90.degree. for every 180.degree. rotation of the first gear. The first gear automatically deenergizes the drive motor after rotation of approximately 180.degree..

Abstract: The projector for slides comprising a lens system having clips to hold slides; magazine tensioning means; a magazine indexing and slide positioning assembly comprising pivotally movable slide positioning means having an operative position where a slide is held transverse to the projection axis of the lens system and an inoperative position permitting the indexing of the magazine and including shutter means movable in timed relationship with the magazine to prevent projection during the indexing of the magazine; and a lens unit focusing system including relatively movable platforms which are selectively manually and/or power operable and linearly slideable lens unit support means operatively connected to the said platforms.