Support For Variably Positioning A Holder Platform For Books Or Electric Devices

A support for positioning a generally planar platform in a range of locations and orientations, comprising:

• an upright standard;
• a first swing arm having an inner end pivotally connected to said upright standard to allow rotation thereof about a first axis so as to be able to swing about said standard and an outer end pivotally connected to an inner end of a second swing arm about a second axis so as to allow relative pivoting of said first and second swing arms about said pivotal connection in parallel planes;
• an outer end of said second swing arm pivotally connected to a shaft projecting radially away from said outer end about a third axis so as to allow swinging in a radial plane relative to said second swing arm;
• said shaft received in a bore in a barrel piece attached to a support pivotally mounted to said platform with a friction element interposed and retarding pivoting of said platform thereon;
• said shaft rotatable therein about a fourth axis and said platform pivotable on said support about a fifth axis whereby said platform is variably positionable relative said upright standard by independent pivoting of said first and second swing arm parts, said shaft part and said platform part.