SU404292A1 - - Google Patents

Description

The inventor

For the visitor

TAPE MECHANISM

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The invention relates to information storage devices, namely, to tape drive mechanisms.

Limes tape mechanisms in which the curvature and feed coils with magnetic tape are placed in a cassette with a notch, and a rotating magnetic head is installed in a guide drum. Such mechanisms also include a turning knob mounted on a single-spring loaded shaft, spring-loaded levers and a rotatable plate. In the known tape mechanisms, the charging of a magnetic tape to the guide drum is difficult with considerable difficulties.

To simplify the filling of the magnetic tape on the guide drum, the proposed tape mechanism is equipped with guide posts fixed to spring-loaded levers, one of which is placed on the shaft moved by the spring-loaded shaft with the possibility of inserting them into the cutout of the cassette and forming a loop of magnetic tape over the guide drum.

FIG. 1 shows the relative placement of the nodes of the tape mechanism; in fig. 2 — spring-loaded levers with guide posts; in fig. 3 - a cassette installed in a tapered machine; in fig. 4 and 5 - movement of guides

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struts and spring arms; in fig. 6 - insertion of a cassette into a tape machine; pas figs. 7 — a tape mechanism with a looped magnetic tape; in fig. 8 — a tape-moving mechanism with a magnetic tape loop removed.

The feed 1 and the receiving 2 rollers with magnetic tape 3 are placed in the cassette 4, which is made with a notch 5. A rack 6 and roller 7 are installed in the cassette case for guiding the magnetic tape, and a roller 8 in the case of the tape mechanism. supplied

a holder 9 having a front 10 and a rear 11 onors and winding walls 12. At the bottom of the holder, a switch 13 with a button 14 is mounted, and when pressed onto which by cartridge 4, the electric motor 15 is turned on. The latter through belt 16 is connected to pulleys 17, which through the belt 18 are connected with the receiving coil 2, and through the belt 19 - with the driving shaft 20 connected through the magnetic tape 3 with the clamping

roller 21. Through a belt 22, an electric motor 15 is connected with an assembly 23 of rotating guide drums 24 and 25, between which one or several rotating magnetic heads are placed (in the drawing are not

shown).

The tape mechanism comprises a rotatable plate 26, one end of which is connected through a trunnion 27 to a wall 28 located vertically with respect to the chassis 29. On the other side of the plate 26, a handle 30 is installed, provided with a gasket 31, for example, of felt or rubber. The gasket prevents damage to the net-, net 4. On the plate 26, by means of mushroom-shaped racks 32, a movable plate 33 movable along it is fixed. One end of the plate 33 is connected to the plate 26 through the spring 34, and the other is provided with an opening 35 in which the stop a plate 36 with a protrusion 37. A stopper plate is also placed in the opening 38 of the plate 26 and mounted on an U-shaped rack 39 mounted on the chassis 29. The plate 26 is connected to the crossbar of the U-shaped stand through a spring 40.

A plate 41 is fixed on the plate 33, in which a shaft 42 is mounted. At one end of the shaft, a bolt 43 is attached to a rotary knob 44. The bolt 43 is closed by a lid 45 mounted in the recess 46 of the knob 44. Inside the handle there is a spring screw 47 connecting it to the bushing 41 in such a way that it tends to rotate together with the shaft 42. At the other end of the shaft 42, a lever 49 connected through a spring 50 to another lever 51 is fixed by means of a rivet 48. The latter, in turn, is connected to the third lever 52 through a spring 53. Under the influence of springs 50 and 53 levers 49, 51 and 52 tends to move apart, turning around a line coinciding with the axis of rotation of the shaft 42. The levers 49, 51 and 52 are made respectively with protrusions 54, 55 and 56, on which reinforcements of the springs 50 and 53. The projections 54, 55 and 56 limit the angle of separation. levers 49, 50 and 52. At the ends of the levers 49, 51 and 52, there are guide racks 57, 58 and 59, which can be either cylindrical or conical. By turning the knob 44 in the opposite direction of the spring 47, the levers 49, 51 and 52 are mounted in parallel. In this position, they are held upright 60, mounted in the plate 26. The rack 60 is placed in the groove 61 of the disk 62 mounted on the handle 44.

The plate 26 is connected via a rod 63 to a lever 64 mounted on the wall 28 by a spindle of the axle 65 and connected to it via a spring 66. The end of the lever 64 is movably connected by means of a pin 67 to the sleeve 68 mounted on a rack 69 which is fixed to the chassis 29 , and has an annular groove 70. The rack 69 is mounted on the chassis 29 in this way.

that the magnetic tape 3 enters its annular naz 70 during recording and playback, and when the sleeve 68 is moved, it leaves it and separates from the node 23.

The filling of the magnetic tape 3 in the proposed tape drive mechanism is produced as follows. A holder 4 is inserted into the holder 9, which presses the button 14 and switches on the electric motor 15, which drives the magnetic tape. By pressing the handle 30, the guide posts 57, 58 and 59 are inserted into the notch 5 of the cassette 4. In this case, the locking plate 36 leaves the opening 35, which causes the plate to move

33 under the action of the spring 34. This movement leads to the exit of the guide pillars 57, 58 and 59 from the notch 5, and to the stand 60 from the groove 61. The exit of the stand 60 from the groove 61 causes the shaft 42 to rotate.

42, the pillars 57, 58 and 59 occupy the positions designated by the positions 71, 72 and 73 and the positions 74, 75 and 76, respectively. When the pillars 57, 58 and 59 occupy the position indicated by the positions

74, 75 and 76, the loop of magnetic tape 3 has a maximum value. After positioning the poles 57, 58 and 59, indicated by the positions 77, 78 and 79, the loop of the magnetic tape 3 under the action of its own weight surrounds the node 23. To remove the cartridge 4 from the holder 9, it is necessary to turn the handle 44 in the direction opposite to the action of the spring 47, and move it in the direction of the cassette 4. After that

under the action of the spring 40, the handle 30 is retracted from the cassette 4. In this case, the lever 64 also rotates and the sleeve 68 moves upward along the rack 69. This movement leads to the WITHDRAWING of the magnetic tape 3 from the annular groove 70 and to the separation of its loop from the node 23,

Subject of Invention

Tape mechanism containing a PC giving and receiving coils with magnetic

tape, placed in a cassette with a cut-out, a guide drum with a rotating magnetic head, a rotary knob mounted on a spring-loaded Eale, a pore-mounted plate and spring-loaded levers

characterized in that, in order to simplify the filling of the magnetic tape on the drum, it is equipped with pillars fixed to spring-loaded levers, one of which is placed on a spring-loaded shaft moved along the plate, with the possibility of inserting them into the cartridge cutout and forming a magnetic tape loop over the guide drum.

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