SU12767A1 - Letter case for the deaf - Google Patents

Description

The use of a drum placed in the case, having letters of the alphabet on the side surface and rotating by means of the handle two arrows pointing in the alphabet placed on the cover of the case, the same letter that is visible in the neighborhood, is intended to facilitate deaf-mute communication with people around , did not use the manual alphabet.

In FIG. 1 is a side view of the device, FIG. 2 is a top view thereof; FIG. 3 section Io a, 6, in FIG. 2 and FIG. 4 is a section along the c, d in FIG. 3

The round case 1 with a bottom 2 thickened relative to the wall has a hole in the middle for axis 3, at the upper end of which is a handle 7 with two arrows - indicators 6.6, and at the other 4 (square) - a drum 5 is attached with side surface lettered alphabet. In the side wall of the case there is a window 8, corresponding to the size of one letter, and

on the outer side of the bottom, the letters of the alphabet are depicted, with for ease of use they are placed along two arcs of different colors, according to which both arrows are painted. When using the device, sequential installation of arrows on different letters of the outer alphabet corresponds to the appearance of the same letters in the case window (the letter P is shown in the drawing), which makes it possible to compose separate words and phrases.

The subject of the patent.

The letter device for the deaf and dumb, characterized in that it consists of a drum b enclosed in a cylindrical case 1, supplied on the side surface with letters of the alphabet and rotated with the help of a handle 7 so that when one of the two arrows connected to the handle is installed the alphabet printed on the cover of the case, the same letter is visible in the window 8 on the side surface of the case.

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