Musical instrument support stand with counter-balanced, vertically movable horn support rack

A musical instrument support stand, which stand comprises;

• a. a bifurcated base,
• b. an upright standard mounted on said base,
• 1. said upright standard having an apertured angle bracket mounted thereon, intermediate the length thereof, and forming a portion of a clamp,
• 2. a U-bolt partially surrounding said upright standard and engaging said apertured angle bracket to form the other portion of the clamp, which clamp holds said bracket in adjusted, fixed relation with respect to said upright standard,
• 3. apertured bracket members mounted on the upper end of said upright standard,
• 4. a sheave journaled between said bracket members,
• 5. a spring engaging adjustment bolt secured to said apertured angle bracket clamp on said upright standard,
• 6. a spring engaged with said adjustment bolt and extending upwardly,
• 7. a cable secured to the upper end of said spring and extending upward over said sheave and between said apertured bracket members,
• c. a pair of spaced apart, horizontally disposed pivot members on said upright standard, near the upper end thereof, the axes of which pivot members are parallel,
• 1. spaced apart, parallel bars, one pivotally connected to each said pivot member and extending therefrom in the same direction,
• 2. an adjustable clamp mounted on, and secured to one of said outwardly extending parallel bars,
• 3. said cable extending downward from said sheave and being anchored to said adjustable clamp,
• 4. an upright bar pivotally mounted on the opposite ends of said parallel bars, the axes of said pivot mountings on said upright bar being spaced apart a distance equal to the spacing of said first mentioned pivot members on said upright standard, said upright standard, said parallel bars and said upright bar forming a parallelogram mechanism,
• d. an apertured tubular member secured on said upright bar, which apertured, tubular member extends laterally outward therefrom,
• e. a horn rack comprising a deformed tubular member, which member underlies the horn, which horn is supported thereby,
• 1. an apertured tubular horn rack support member being secured to said horn rack and extending laterally inward to complementally engage said apertured tubular member on said upright bar,
• 2. a bolt extending through said aperture in said tubular horn support member and through said complementally apertured tubular member on said upright bar so as to maintain said horn in an adjusted position,
• f. said spring attached to said cable being adapted to support at least a portion of the weight of the horn rack with the horn thereon, when said spring is in tensioned condition.