SU1385141A1 - Tone arm - Google Patents

Abstract

This invention relates to the accumulation of information. The purpose of the invention is to improve the quality of sound reproduction by reducing the error in maintaining the vertical reproduction angle. When the pickup head 5 is moved from the edge of the record to the center, the beam 7 rotates counterclockwise so that the axis of symmetry passing through the needle at any time remains tangent to the record groove, excluding the error of the horizontal angle of error. Compensation of the rolling force, which occurs when the arm moves along an arc in the plane of the record, is ensured by applying a spring tension 25 to the shoulder of the rocker arm. 2 h. n. f-ly, 5 ill.

Description

23

J5

2

25

FIG. /

W

with

00

00 SP

1385141

12

The invention relates to the accumulation of the fastening points of the spring 21, for example,

information, namely to the equipment of sound with the help of the adjusting screw 22.

playback of mechanical recording. When moving the pickup head 5 from the edge of the record to the center

The aim of the invention is to raise the beam 7 rotates against the time-quality of sound reproduction by decreasing the arrow, so that the axis of symmetry of the error of the vertical support, passing through the needle, remains tangent to the groove at any angle of reproduction. FIG. . 1 shows the tonearm in the a-record, excluding the error of angiometry; in fig. 2 - the design of the vertical angle of error, Narma, a cut along the horizontal axis of the sym- When reproducing warped grammar; n.a fig. 3 — body x-plate the head of the pickup using plates simultaneously modified on it and the unit swings out and vertically fastens the end of the spring, and cuts; in fig. 4th vertical plane, and always the location of the end of the plate in the casing in a plane parallel to the thaw axis of the bearing; tinke. Thus, the vertical angle of FIG. 5 — the movement pattern of the reproduction tonearm remains stable with the vertical plane. Any warping value of the record. The device contains a base 1 of the support. The rolling force compensation, the curvature of the arm, on which the vertical chassis is fixed as the arm moves in an arc to axle 2, with which the gramophone plane is coaxially fixed, is provided for the fixed pulley 3 and with the possibility of 20 counts of attachment to the outer shoulder of the cortex. relative to axis 2, the set of 7 force of tension of spring 25. has the form of a bracket body 4 supports.

Claims (3)

The pickup head 5 is fixed on the invention formula of a turntable, consisting of a holder 6, rigidly connected with the yoke-1. The tonearm, which contains the support, is installed 7, and is installed in the case 8 and is molded on it with the possibility of rotation of the gate device with the possibility of swinging in two mutually perpendicular planar movements around the vertical noise level arm, carrying the additional axis 9. The housing 8 also has the shape of a swivel in the horizontal plane. In the shelves of the housing 4- there are made a platform with a pickup head, parallel parallel holes, I complete -JQ a fixed pulley mounted on a support parallel prismatic recesses of the vertical axis of rotation and connected with tasks 10 and 11, perpendicular to the vertical flexible pull with a rotatable platform 2 axis and lying in one, differing in that, for the purpose of a vertical plane with this axis. Analogous to improving the quality of reproduction, by glancing in the shelves of housing 8, the prize-decreasing errors of maintenance of the vertical sockets 12 and 13 are made. In the slots from the ticking playback angle, the lever 10-12 and 11-13 are inserted into two hard disks - tins 14 and 15. The plates are U-shaped, one above the other, rectangular in shape, and their ends are made in the form of plates, the ends of which are hinge-knives with holes for mounting them in a parallel manner with parallel prismatic-horizontal axis of the bearings 16-19. The nests, located in the crook of each knife, were carried out on the 40-pus of the support and turntable, the bearing outer ring with a side fence, and the ends of the plates are located in the plane. A counterweight 20 is rigidly connected to one of the plates 14 or 15, intersecting the vertical axes. Between the breeze, between the plates is placed a spring 21 and an extension spring 21, the ends of which are fixed, the ends of which are fixed to in the assemblies on the supports and the supporting screws 22 and 23, located at the 45th platform, and in the shoulder of the flexible rod parallel to the axes 2 and 9. The head opposite to the record was inserted into the screw 22 and provided with a scale of clamping force. tension spring. In the spring 21 is placed a rod of elas- 2. The tonearm of claim I, characterized in that, with a view to damping vibrations of the head of the pulley 3 and the yoke 7, a flexible pickup device is connected to the inside of the spring by a stretch of thrust 24. In the shoulder of the flexible rod 24 placed a rod of elastic vibrating to the outer shoulder of the rocker arm 7, absorbing material, an additional spring 25 of growth - 3. The tonearm under item 1, which differs by a marriage, which, in order to regulate the clamping, the tonearm works as follows. The fixing units for the ends of the spring are made in the form of adjusting ones by means of a counterweight 20. The need for screws mounted on the supports of the support is the pressing force of the pickup head 5 and the turning device parallel to the set by mixing one of the vertical axis of rotation. / five 7 75 2 J 162 20 22 3   5 "" fe; FIG. 2 needles