FR2551238A1 - SUPPORT FOR A CONTROLLER OF THE POST-STAMP WATERMARK - Google Patents

Abstract

SUPPORT FOR A POSTAGE STAMP WATERMARK CONTROLLER. THE SUPPORT IS MADE IN A SINGLE PIECE, IN THE FORM OF A TUBE SECTION. THE THICKNESS OF THE BOTTOM3 IS GREATER THAN THAT OF EACH SIDE WALL2. THE FACE OF THE TUBE OPPOSED TO THE BOTTOM SHOWS AN OPENING DELIMITED BY AREAS OF THE LARGE SIDES, REINFORCED AND FORMING A projection8 ON THE SIDE WALLS2, TOWARDS THE LONGITUDINAL AXIS OF THE TUBE.

Description

The present invention relates to a support for a controller of the

postage stamp watermark.

  German Patent No. 24 28 975 discloses a semi-automatic visual controller of the authenticity of bank notes or other securities, with detection of differences in thickness due to inclusion or printing. sample is applied to a transversely lit glass plate and observed visually in this apparatus The pressure forces are

  absorbed by the body of the latter.

  The invention relates to a controller support for the postage stamp watermark, which allows economical production and safely absorbs and transmits the high forces produced during the

contr 8 the.

  According to an essential characteristic of the invention, the support 15 is made in one piece in the form of a pipe section; the bottom thickness is greater than that of each side wall; and the face of the tube opposite the bottom has an opening, delimited by edges of the long sides reinforced and forming a projection on the side walls, towards the longitudinal axis of the tube The bottom 20 of the tube section is advantageously designed so that its thickness increases from the edge of the sides to the longitudinal axis of the tube, and that it comprises a central hole Excellent results were obtained by making each side wall of supports according to the invention with a thickness less than the height a projection. In order to ensure that a transparent blade is properly seated on the projections in a support according to the invention, it is recommended to provide a groove between the inner face of each lateral wall.

  and each projection, in the area of intersections The support according to the invention is made of metal, and preferably from a spun aluminum square section.

  An essential advantage of the support according to the invention lies in the fact that it makes it possible to produce the other parts of a postage stamp watermark controller in lightweight construction, made of materials

  For example, plastics or sheet metal. The resulting weight reduction greatly increases the convenience and usability of the control.

  their. Other features and advantages of the invention will be

  better understood using the detailed description below of a

  embodiment and the appended drawing in which: Figure 1 is a vertical section of a support; Figure 2 is a perspective view of the support according to Figure 1; and FIG. 3 is a partial vertical section of an equipped controller

support.

  The support 1 according to the invention is constituted by a section of tube 10 in one piece, having the side walls 2 and the bottom 3.

  In the exemplary embodiment according to FIGS. 1 and 2, the thickness of the bottom increases from the lateral edges towards the longitudinal axis of the tube, as indicated by the arrows. A hole 5 is provided in the center of the bottom. The surface of the opposite tube bottom has an opening 6, 15 delimited by edges 7 of the long sides, which are reinforced and form a projection 8 on the side walls 2, in the direction of the longitudinal axis 9 of the tube The thickness of the side walls 2 is less than the height of a projection 8 A groove 11 is provided at

  adjacent intersections between the inner face 10 of each side wall 2 and each projection 8.

  As shown in Figure 3, a press bolt 12 enters the hole 5, threaded in the embodiment considered; the bolt 12 applies the pressure plate 13, on which the controller 14 must be placed, on a transparent plate 15 The latter is illuminated transversely by a light source 16 and thus allows the visual observation of the sample from top to bottom, as indicated by the arrow 17 The support according to the invention absorbs the application pressure by the projections 8, then transmits it to the bottom 3 by the

side walls 2.

  Of course, various modifications may be made by those skilled in the art to the principle and to the devices which have just been described solely by way of nonlimiting examples, without

depart from the scope of the invention.

Claims (4)

claims   1 support for stamp watermark controller, characterized in that it is made in one piece, in the form of a tube section; the thickness of the bottom (3) is greater than that of each side wall (2); and the face of the tube opposite the bottom has an opening (6) delimited by edges of the long reinforced sides and forming a projection (8) on the walls   lateral (2) towards the longitudinal axis (9) of the tube.   2 Support according to claim 1, characterized in that the thickness of the bottom increases from the lateral edges to the longitudinal axis   (9); and the bottom has a central hole (5).   3 support according to one of claims 1 and 2, characterized in that the thickness of each side wall (2) is less than the height of a projection (8).   4 Support according to any one of claims 1 to 3, characterized by a groove (11) in the area of the intersections between the face   interior (10) of each side wall (2) and each projection (8).   Support according to any one of claims 1 to 4, characterized by its embodiment in the form of a square profile of spun metal. 20 6 Support according to claim 5, characterized in that the profile is made of aluminum.