DE8225051U1 - DEVICE FOR CHECKING THE REALITY OF DOGS - Google Patents

Description

Hanau, September 2, 1982 ZPL-Zw / ha

WC. Heraeus GmbH, Hanau

"Device for checking the authenticity of stamps"

The invention relates to a device for checking stamps according to the preamble of the 9 main claim. It is based on a state of the art, as it is, for example, in the DE-AS 24 28 975 documented.

To make watermarks recognizable, especially in postage stamps, So far, chemical aids, solutions such as gasoline, have been used in those containing watermarks Was dived well. This was followed by fluoroscopy and visual inspection.

The object of the invention is to create a device that allows testing on the dry route. Furthermore, this should Device have an easy-to-use housing and be easily portable and usable at different locations.

This task is solved by the characterizing part of the main claim specified features. Further refinements of the invention can be found in the subclaims.

In the accompanying drawing of an exemplary embodiment a hand-held device is shown purely schematically, without the invention being restricted thereto.

As the single drawing shows (in plan view, side view and cross section), the hand-held device has a housing 1 with a Battery 2 for power supply and an incandescent lamp 3 in a reflector 4. An on / off button 5 is just like the voltage source 2 is connected to one another via contact springs 6.

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The battery 2 is in a housing \ i / and la as well fixed by means of the base plate 7 within the housing 1 and exchangeably supported by the removable and im Housing 1 insertable base plate 7. The housing u / eist on its upper side an opening 8 as a viewing opening. A raised edge 9 is used to switch off the flow of extraneous light. For receiving the test item 10 a receiving part 11 is arranged. The loading takes place outside the device in which the test material 10 (postage stamp) between the receiving part 11 and the glass plate 12, which can consist of either gloss or acrylic glass, is placed through a hinge 13 are connected to one another. Through a lateral housing opening 14, the entire receiving part 11 can be included the test material can be inserted into the device. Passed through the device walls, the receiving part 11 comes above a pressure plate 15 to lie. Via a pressure bolt 16, which has a thread with a small pitch and an in a recess lying ball 17, whereby position compensation and uniform surface pressure is achieved The test material is pressed against the glass pane 12 by rotating a pressure wheel 18, which can be rotated from outside the housing.

The axis of rotation for the contact pressure, which is also the The optical axis for visual inspection from above is denoted by the reference number 19. The ball 17 is also on it in one Recess 20 of the essentially pyramid-shaped pressure plate 15 superimposed centrally. An attachable magnifying glass can be used as an additional part 21 are arranged.

Modifications of the exemplary embodiment can of course be made without going beyond the scope of the invention to leave. For example, the rectangular observation area shown here with a rectangular glass pane can also be round formed with a cheaper to manufacture round pane of glass

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In particular, instead of postage stamps, other test items with watermarks can also be used, which are marked by a lateral Slit can be introduced between the pressure plate 15 and the transparent pane, so that a dry visual Test takes place, which can be carried out easily and independently with the invention.

Claims (8)

α. Hanau, September 2, 1982 ZPL-Z \ i // ha W.C. Heraeus GmbH, Hanau "Device for checking the authenticity of stamps" claims 1. Device for checking stamps, especially visual ones Checking or making watermarks recognizable in postage stamps, characterized in that the device as Hand-held device is designed, the housing of which contains light source and power supply part and a transversely illuminated Disk below which the test material is arranged in a receptacle such that it can be pressed against the disk. 2. Apparatus according to claim 1, characterized in that it contains arranged one above the other on an axis: a pressure wheel with threaded bolts in a pressing part with a flat surface and anti-twist protection, the stamp holder, the brand, the transparent pane of glass or plexiglass with a shaft that preferably contains a lens for low-light viewing of the test item from above. 3. Apparatus according to claim 1 or 2, characterized in that that the shaft is in one piece with the transversely transilluminated pane or is firmly connected. 4. Device according to one of the preceding claims, characterized in that the pressing part is approximately conical is and has a central recess in which a ball is mounted on the compression thread bolt is that there is an anti-twist protection and / or position compensation (central warehouse). tt · · · i * * ti * • I I I I I »» Ti · t t · II ■ · «■« I ι ι ■ k · · · · 5. Device according to one of the preceding claims, characterized characterized in that the pressure bolt has a thread with a small pitch and the axis of rotation is the central axis or viewing axis of the superposed part is. 6 »Device according to one of the preceding claims, characterized marked that the Prüfgutaufnähme as in the housing retractable slide is designed and this with the translucent? Disc connected by means of a hinge is. 7. Device according to one of the preceding claims, characterized in that an incandescent lamp as a light source laterally is arranged next to the disc with a reflector so that it is connected to the voltage source and an on / off switch is in contact. 8. Device according to one of the preceding claims, characterized in that the device housing has a removable Base plate for changing the voltage source, M / ie battery, having.