DE1129007B - Device for reading the addresses of letters when sorting them according to their destinations - Google Patents

Description

The invention relates to a device for reading the addresses of letters when sorting them their destinations. In such devices, conveyor systems are used, which the letters successively pass through the device.

Such a device has already become known which transmits the letters via two optical channels with their front and back on one level. Here, however, it is disadvantageous that the letters can only be imaged in two possible positions, so that not all of them passed through the device Letters can be recognized with regard to their location.

The invention is based on the object of sorting the addresses of letters according to their Destinations use a conveyor to read the letters sequentially passes through a device that has two channels of the letters with their front and back maps on one level.

According to the invention, this object is achieved by optical branching devices, both of which optical channels in two branches so that the four possible positions of the letters on one The focusing screen can be shown in a single plane next to each other and / or one above the other.

An embodiment of the invention is explained with the aid of the drawing. This shows a conveying device 1 which, in a known manner, leaves the main part of both surfaces of the letters 2 to be viewed free. By the conveyor 1, the letters 2 are guided in a likewise known manner past two opposing mirrors 3, each of the mirrors being the entrance to an optical channel, each of which deflects the view of each face of the letter so that they are depicted in one and the same plane will. The optical channels consist of further mirrors 4 and lens units 5. Between the mirrors 3 and 4 there are optical branching devices in the form of semitransparent mirrors 6, which branch off a secondary channel, which via a reversing lens? images the surface of the letter rotated by 180 ° on a flat screen 8. Through the main channels 3, 4, 5 an image of the front and back of the letter takes place, while the secondary channels 6, 7 reproduce the document rotated by 180 ° next to the corresponding front or back image. The images of the four possible positions A, B, C, D of a rectangular letter can be either side by side or a device for reading the addresses

of letters when sorting
according to their destinations

Applicant:

Standard electrical system Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen,
Hellmuth-Hirth-Str. 42

Arthur Mehlis, Stuttgart-Zuffenhausen,
has been named as the inventor

one above the other as well as partly next to one another, partly one above the other, as shown in the drawing is shown. The latter option is more convenient for consideration.

To scan the document, lighting sources 9 are still required, both of which Illuminate the pages of the letter.

Claims (3)

PATENT CLAIMS: 1. Device for reading the addresses of letters when sorting them according to their destinations using a conveyor system, which leads the letters successively through the device, which images the letters with their front and back on a plane via two optical channels, marked by optical Branching devices (6,7) which split the two optical channels (3, 4, 5) into two branches each in such a way that the four possible positions (A, B, C, D) of the letters (2) on a ground glass (8) can be mapped next to each other and / or on top of each other in a single plane. 209 578/152 2. Apparatus according to claim I _3, characterized in that the optical branching devices each consist of a mirror (6) and a reversing lens (7). 3. Apparatus according to claim 2, characterized in that the mirror (6) is semi-transparent are. Considered publications: German Patent No. 918 496; Swiss Patent No. 311992; British Patent No. 723,609; U.S. Patent No. 1425,387; German utility model No. 1683 323. For this purpose, 1 sheet of drawings