SU1186A1 - Centrifugal regulator to gramophone, etc. devices - Google Patents

Description

The present invention relates to improvements in controls for gramophone and the like, in which the rotation of the sound plate must be performed with continuous acceleration or deceleration, and not at a constant speed, as is usually the case today. In this type of phonographs, this goal can be achieved either at a constant speed of rotation of the engine connected to a rotating circle using a variable transmission, or so that the speed of the engine during needle movement across the plate can increase (for example, under the influence of a regulator).

The proposed controller is intended primarily for this second type of gramophone. Such speed controllers are already known for motors of phonographs, in which weights sit on flexible parts in the form of plate springs, fixed at one end to the fixed ring on the control pin, and the other to the ring, which can move in the axial direction along this pin. supporting a friction plate, which acts in conjunction with a friction reversing cushion, allowing you to set the speed with which the spindle of the regulator coupled to the engine should rotate. In such regulators, the loads were strengthened in the middle or almost in the middle of the flexible part. Such regulators were also used for gramophones, in which weights can slide along radial arms; moving away from the stationary ring on the axis of the regulator, while being in connection with the help of spring parts, with a ring that can slide along the axis of the spindle of the regulator and is equipped with a friction disk intended for the purpose mentioned above. A coil spring, wound around the regulator spindle, serves to hold the fixed and movable rings at a distance. The radial shoulders are connected to the movable ring so that, when the knob is rotated, the weights move outwards and the movable ring pulls behind it. The present invention aims at real and accurate speed regulation by a controller of the type mentioned above, beyond its limit and possibility, by varying the size of the controller, to vary the value of the limit speed at which it comes into action. In order to eliminate excessive pulling away of the regulator washer, the latter, belonging to the above-mentioned type, is supplied with such connecting devices between the fixed and movable rings, which are each of two parts, of which a rigid, comparatively shorter part is connected rotationally with the fixed ring and the longer part is fixed to the movable ring, and the weights are placed on the connecting parts much closer to the fixed ring than to the movable one. The distance between the weights and the fixed ring can be from V to Vs the distance of the weights from the movable ring. While the short portion of each coupling device is rigid and rotatably coupled to the fixed ring, the long portion may preferably consist of a leaf spring, fixed to the movable ring. FIG. 1-4 depict an exemplary embodiment of the proposed controller; in fig. 1 is a side view of the adjuster in an inoperative position, attached to the table for the engine of the machine; in fig. 2 is a perspective view of a regulator with weights slightly apart from rotation; in fig. 3 shows an end view of the regulator on the left side in FIG. one; in fig. 4-part on a large scale, explaining the method of strengthening cargo. In the 2.2 spindle, the horizontal spindle of the regulator rotates with the axis 5 of the rotating table, for control of which it serves in some known way, for example, with the aid of screw 4. The axis 5 of the table is driven by a motor not shown in the drawing. Two rings are mounted on the reel torus spindle, one of which 5 can slide freely on the rod, and the second 6 is fixed to it with a screw or screw 16. On the moving ring 5 there is a usual friction washer 7, and between the rings, connecting them to each other, there are four connecting devices installed at equal distances from each other and consisting of each of the leaf spring 8 and of the crankshaft rigid part 9. Each of the cranked parts is fixed rotationally to the ring 6 as shown in FIG. 3 and 4; each spring 8 is fixed to ring J. The cranked parts converge with the springs at the points of reinforcement iO (Fig. 4) and fasten between themselves and the load 10 with screws 12. Between the rings 5, 6, the spindle 1 of the adjuster is covered with a helical spring And, strives to open these rings. A friction pad 13, rubbing against the surface of the washer 7, sits on the shoulder 14 of the lever 15, which can move from left to right (Fig. 1) using a device driven by a motor or sonic shoulder (or if the phonograph is set to rotate with a constant speed, respectively, nowadays sound plates - using, for example, a lever moved by hand). When the regulator rotates, the weight 10 discharges outwards, try to straighten the slightly curved springs 8 and pull the washer 7 to the left (in FIG. 1), thus compressing the spring 11. The force with which the regulator washer 7 moves along the friction cushion 13, which is determined by the amount with which the thrust force is produced on this washer with weights 10, overcomes the resistance of the coil spring 11 at a given position of the weights, i.e. at a given speed. This pulling load produced by the weights quickly increases as they are separated from the axis of rotation, as a result of which it is desirable that the weights do not separate too far, as a result of which they will have to be connected to the spindle by relatively short links. It is also desirable that the friction washers

7 could make a sufficiently large interplay so that the action was distinguished by accuracy, without requiring too thin an installation. Further, in order for the loads 10 to have the greatest effect on the friction washer, their connection with the movable ring 3 should consist of relatively long parts. All of these conditions are best met by the arrangement of each connecting device between the rings 6 and 5 of the short and long parts (calculated so that, for example, a long part is given a length two or three times the length of the short part) and a hinged joint. the short parts 9 with a fixed ring b, while the long parts 8 are fixed to the movable ring 5. bearing the friction washer. The long parts 8 can equally well be made up of rigid tg, connected rotationally with ring 5, weights 10 and shoulders 9, but with such a device the number of hinged connections in the controller increases significantly, but in practice it is difficult to completely avoid the noise produced such loose hinges. In the above described controller there are four weights 10, but their number can be reduced with such a device to three, as is usually the case at present. Corresponding resizing of the regulator can be

vary the magnitude of the speed beyond which it comes into action.

SUBJECT OF THE PATENT.

1. Centrifugal regulator for gramophones and other devices, consisting of spindles with a fixed ring and a sliding ring with a friction clutch mounted on it, with elastic connecting devices between the rings and weights and an elastic device for holding the rings at a distance from each other, characterized in that the connecting devices consist each of two parts — one rigid, relatively short part .9 connected to the movable ring 6 and the other longer 8 connected to the movable ring 5; e 10 are attached to the connecting devices closer to the fixed ring than to the movable one.

2. The form of execution of the centrifugal regulator specified in paragraph 1, characterized in that the distance of the attachment point of the weights 10 from the fixed ring 6 is from / 2 to the distance from the movable ring 5.

3. The form of execution of the centrifugal regulator specified in paragraphs 1 and 2, characterized in that the parts 8 of the connecting device are made in the form of plate springs attached to the movable ring 5. KPatent is a GRAPHICAL COMPANY, with an OTRV. Jf 1186