SU83656A1 - Universal writing instrument for the blind - Google Patents

Description

Universal writing instruments for the blind are known, which are made in the form of two hinged plates, one of which is provided with recesses for extruding the Braille points, and the second with guide windows. These devices have elastic rollers with a ratchet mechanism for progressively moving paper. Such writing instruments can only be used by the blind in Braille.

In order to be able to write in the usual way, a writing instrument has been proposed, in which the upper plate is provided with a longitudinal guide window for the writing tip.

To change the distance between the rulers, it is proposed to mount the latter on levers that are rotatably attached to the back plate and having protrusions that interact with a wedge moved in the plate slot.

In order to prevent crushing between the elastic rollers of the dots pressed on the paper, a cam is mounted on the handle of the feed roller, which, interacting with the base pin, lifts the base plates, thus reducing the pressure on the paper.

FIG. 1 shows a writing device, a general view; in fig. 2 - the same, cross section; in fig. 3 - part of the device with ratchet mechanism, in section; in fig. 4 - part of the device (longitudinal window) with the left mechanism of guide nlanok in the section; in fig. 5 - the same, with the right mechanism of directing films.

On the base / on the hinges 2, a ruler 3 is placed, having a longitudinal slit 4 along its length and a lower edge curved upwards for the casing 5, under which is placed a roller 6 covered with rubber. On the axis of the roller bearings placed 7, mounted in the ends of the casing. Under the roller 6, paired rollers 8 and 9 are placed in two places along the roller; they are pressed against the roller by springs 10. Between valiLo 83656-2 -

lump and rollers passes the paper laid in between the paper in a standard size sheet.

To rotate the shaft and advance under the ruler of the paper, there is a knob // with a spring 2, which engages alternately with the radial teeth of the ratchet 13, which is planted on the axis of the roller on the pin. The ratchet is retained by the spring 14 attached by a screw to the end bearing.

The paper is applied to the opdun between the flanges of the base 15 ,. and the upper edge of the paper is aligned with the upper edge of the protrusion of the sticky button. After this, the ruler on the hinges 2 is lowered onto the paper.

, moving the paper under the ruler and each new line, the handle 11 is turned first counterclockwise to failure; at that, the spring 12 will hook onto the ratchet tooth, and by turning the knob clockwise, the ratchet with the roller rotates on the i / c circumference of the roller and stretches up one row, while the spring 14 also changes position to the next tooth from the bottom.

The handle rotation limiter is a notch in the ring 17, which is put on the handle, and abut against the spring 14. The bottom of the base is closed by the cover 18, which protects the rollers.

For the letter, the hand is laid with the middle phalanx of the little finger and the edge of the ruler 3 curved upwards, and the letter is made in the slot between the movable longitudinal boundary rails 19, which are pulled by the spiral spring 2G, at a distance from each other equal to the normal height of the letters.

When writing letters, going out, their normal height (letters b, c, d, y, etc.), peijKH 19 freely move up or down along its entire length with the same resistance to the movement of the pencil, no matter where these letters are not written.

The distance between the slats ranging from 5 to 10 mm is adjusted depending on the handwriting by means of the blade 21. with the shank, the passage w, into the slot and fixed by the nut 22. The tension of the spring 20. T is adjusted by means of the finger 23 with the shank, the passage shims in the slot and secured by the nut 24.

For writing in the Braille system, there is one lattice of the 25th ruler and normal cells. Braille writing paper is laid out in the usual order. Copying one line and moving the paper up to the next line to see the bulges in the letters, the ruler when turning the handle due to the tide on the handle 26, sliding along the pin 27, rises by 2-3 mm and the ruler stops push the paper. After turning the handle on a new line, LiYi, press the letter to write the next line, and so on:.

In the folded state, the device is held together by a spring 28, pressing its pin 29 with its hole.

NOTICE of invention

Claims (3)

1. Weevers; a device for the blind, consisting of a base for paper, having depressions for extruding the Braille points and hingedly joining with it a plastic with post; and resiliently arranged guide windows and elastic rollers with a ratchet mechanism for progressively moving the paper , characterized in that in order to ensure the possibility of writing also in the usual way, the upper plate has a directional window located along the line for the squeezing point. 2. The device according to claim 1 using spring-loaded guide lines for the writing tip, characterized in that to change the distance between the rulers, the latter are mounted on levers, pivotally attached to the plastic plate and having protrusions that interact with a wedge moved in the slot. 3. Apparatus according to claim 1, characterized in that, in order to prevent sm1n-anis between elastic rollers of the points extruded on the paper, the handle of the feed roller carries a cam that interacts with the pin of the base, which is intended for priming the plate with the top roller, in order to reduce the pressure on the paper. ,