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: A process for characterization of magnetic materials for validating documents carrying marks which include magnetic materials is based on an analysis of signals supplied by an oscillator generating a low frequency signal supplying emitter windings and receiver windings that have different conformations. The receiver windings (A) and (B) are joined to an amplifier that has two outputs (S1) and (S2), output (S2) yielding, upon conformation, a signal (X) that is used as a time reference, and output (S1) yielding, after various transformations, two signals (Y) and (Z), each of which is entered into a microprocessor which, together with valid magnetic marker data, generate signals accepting or rejecting the document.

Abstract: A system is used to validate bottle caps, or top crowns, having particular reflectivity characteristics in plastic covering their undersides and in an alloy from which they are made. This permits the top crowns belonging in a particular promotion to be different, in these respects, from the rest of the top crowns on the market. Validation is carried out with the assistance of an identifying mechanism having an optical sensor and an inductive sensor in front of which the top crowns move while being carried by a conveyor belt or band when inserted in the identifying mechanism. The optical sensor works together with a generator of light having a given wavelength that is reflected by the underside of the cap or top. Thereafter, the light reaches the optical sensor. Signals generated by the optical and inductive sensors, upon the passage of the top crown, are duly processed and compared with the preset valid values in a suitable program.

Abstract: A coin sorter for coin-operated machines including a frame subdivided on the interior into vertical passages for coins, the upper ends of which open out through apertures in a transversely aligned position, and the lower ends of which open out through apertures in two axially shifted positions. The frame is mounted so as to be able to pivot about a medium axis parallel to and near the bottom and is connected to a mechanism that causes the partial tilting of said frame toward one side or the other, moving the upper opening of the passages sideways. The passages can have openings through a smaller wall, in which case gates permit the selective closing of any of the openings.