SU30697A1 - Blind typing machine - Google Patents

Description

6 of the main author's certificate No. 29479 describes a typewriter for printing the blind, consisting of a key box with six keys arranged in two rows and fitted with height-adjustable nuts for guiding the pull strings and springs for lowering the longitudinal partition connected to Drum-bearing record.

In the proposed typewriter, two keyboards are used, connected by a partition, the ends of which end in teeth connecting to the teeth, while the drummer is attached to the middle of the partition and strikes the paper at the contact between the disks, on the surface of which the paper is drawn.

In FIG. 1 shows a cross-section of the machine; FIG. 2 is the same, top view; FIG. 3 is the same front view; FIG. 4 is the same, bottom view.

At the rear end of the tripod platform are two key boxes / with six keys each. These boxes are interconnected by a movable longitudinal partition b, the ends of which, protruding beyond the outer side walls of the box, are provided with teeth and are coupled with gears 2, fixed (276)

BUT attached to a common axis 3. This axis is equipped with a coil spring 4. Lowering the longitudinal partition Bviz, the writer causes the gear 2 to rotate, and with them their axis 3, and squeezes the spring 4. As soon as the pressure on the heating fence stops, the spring 4 Camping returns all parts described to their original position. A drummer 5 is attached to the partition in the middle of the field and is thrown over the carriage carrying the paper 7. Fill down together with the partition 6, under pressure inserted into the work of the key, the drummer strikes the paper from above on the paper where the lettered disks touch each other under it § . The paper is taken out of the carriage by means of a shaft so that it is steleted over the surface of both of the lettered disks 8. The carriage device is borrowed from other systems of typewriters. Each lettered disk 8 rotates on its axis 9 to be fixedly fastened with a pulley 70. A string is wound on the pulley 70 and is attached to it with one end. The string goes through the block / 2, in contact with the fist 75, and is inserted into the back row with a key. The P-axis of the letter disc 8 has a coil spring / # which compresses c when the string 77 pulls up and returns the disc to its original position when the string descends. Block 12 is set to the right disc so that it is the vertex of some imaginary equipolar triangle placed on the vertex; Axis 9 enters one of the corners of this triangle, located at its base, when the writer knocks out a capital letter, and in the other when he knocks a lower case letter. Such a position of block 12 is optional, but in case of deviation from this position, the corresponding movement of capital letters on the lettered disk is carried out. The string 25 of the front row is wound on the pawl 15 fixedly mounted on the same axis J6 with the cams J3. This axis is equipped with a spring 17, the purpose of which is to return the fist to its original position. The purpose of the fist 13 is to produce a fracture of the string 11 to varying degrees and thereby determine the angle of rotation.

Both lettered disks are fixed on a plate 18, the ends of which are inserted into the corresponding grooves of the tripod. On the underside of this plate there are teeth, with which it engages with gear / P, which is fixed on axis 20, which, if turned by means of a head, /, the writer can move both lettered disks to the right or to the left. Moving the discs to the left, it removes the left disc from under the drummer, and the right disc is brought under the drummer in capital letters located on the disc closer to the center than lower case.

Simultaneously with the movement of the discs, the plate 23 moves in the same direction with the help of gear 22, plate 23. Screw limiting device 24 is screwed perpendicularly to plate 23. When writing in capital letters, the carriage of the machine moves two teeth at once; 24 approaches the pawl 26, which engages the carriage tooth, and does not allow taking more than one tooth (i.e., the carriage moves only one tooth). The carriage and its mechanism, as already indicated

was higher, borrowed from other types of typewriters. The dye tape mechanism is also borrowed.

The work on the machine of the proposed construction is performed the same as on the machine described in the author's certificate No. 29479 when the writer uses the right box. The use of the left box is modified in accordance with the fact that it is arranged symmetrically with the right one.

Lower case letters are written at the same time by both boxes, upper case letters are written in one right.

The subject matter of the invention.

 1. Modification of a typewriter for printing blind by the author's Certificate N ° 29479, characterized by the use of two boxes connected between one partition 6, the bent ends of which are provided with teeth for coupling with gear 2.2 on the spring-loaded axis 3, attached to the middle of the partition is t ha of the striker 5 mounted above the point of contact between the two discs 8,8, on the surface of which the paper is drawn.

2. In the machine according to claim 1, a device for connecting disks 8.8 to the rear row of keyboard boxes, consisting of pulleys 9, on which the string / 7 is wound, is thrown over the / 2 cam 13 block, and serves as the front row key string 25, wound on a pulley / 5, mounted on the same axis 16 with the cam 13,

3. In the machine according to claim 1, a device for moving one of the discs left or right when printing capital letters, consisting of a plate 18 provided with teeth for coupling to a gear / I fixed on axis 20 with a head 2 /, and plate 2 moved gear 22 and provided with a screw stop to restrict the movement of the carriage to only one tooth when typing lower case letters.

dependent author's certificate of M. N. Levkin

No. 30697

fig.Z