MECHANISM OF TENSION OF THE ORCHESTRA timbal MEMBRANE

A mechanism of tension of the orchestral timbal membrane consists of a counterhoop for uniform pressing of a membrane to the top part of the timbal parabolic case, jacks equipped with screw holes evenly and motionlessly fixed along the outer surface of the counterhoop, tension screws, levers evenly and hinged along the outer surface of the upper part of the timbal parabolic case, tension rods, tension unit made in the form of a star with one elongated end, the number of ends of which is equal to the number of jacks, screws and plates for rigid fixing of the ends of the tension rods at the ends of the tension unit, a tensioner made in the form of a star with one elongated end, the number of ends of which is equal to the number of ends of the star of the tension unit, which is hinged to the tension unit and attached to the support fixed in the middle of the upper part of the timbal parabolic case, blocks hinged to the ends of the tensioner through which tension rods are passed, connecting elastic element housed in an elastic hollow body, one end of which is attached to the elongated end of the tension unit, and the other - removed through the central hole of the timbal parabolic case and fixed on the diaphragm tension control pedal, in which according to the utility model the outer side of the upper part of the parabolic case has fixed housing of the membrane tension indicator with mutually parallel guides, on the surface of which there are limiters of maximum and minimum tension of the membrane with the ability to move up and down, the lever mechanism is mounted into the housing of the indicator of the tension of the membrane, at the end of which there is fixed indicator of the tension of the membrane with the ability to move between limiters of maximum and minimum tension of the membrane when rotating the lever mechanism, the end of the elastic rod is attached to the other end of the lever mechanism inserted through the hole in the parabolic case, the opposite end of which is attached to the elongated end of the tension unit, the elastic rod is housed in a tubular body, one end of which is fixed to the elongated end of the tensioner, and the other end is fixed to the inner surface of the parabolic case. Механізм натягу мембрани оркестрової литаври складається з обруча для рівномірного притискання мембрани до верхньої частини параболічного корпусу литаври, гнізд, обладнаних отворами з різьбою рівномірно і нерухомо закріплених вздовж зовнішньої поверхні обру