| 摘要 |
This invention relates to an improvement in men's and ladies' folding and tandem bicycles. The improvement provides commonality of structural and mechanical means and commonality of configuration components between a men's and ladies style bicycle, and tandem bicycles. This invention provides a bicycle with alternative men's and ladies' model structural means. It permits elimination of the top horizontal bar of the folding bicycle frame, allowing construction of a ladies' style folding bicycle, which folds on three axes with exclusive structural support means in the lower member or members fixedly secured to a vertical structural spreader bar in the rear of the bicycle frame. The said vertical bar provides vertical adjustable seat support means for the rider, with the seat remaining in proper forward adjustment during folding and unfolding of the bicycle. The improvement expands the capability of bicycle folding means into ladies' model configuration and tandem rider model configurations. There is a commonality of construction in a men's, ladies', and tandem model configurations. A detent is disclosed to manually release and retain the articulated latches when they are locked, thereby avoiding inadvertant release when the bicycle is ridden. An eccentric adjusts out the looseness in the folding joints to provide adjustment for manufacturing tolerances and normal wear. Also disclosed is a tandem style bicycle the size of a single rider model, except that it has provisions for a tandem seat and a tandem set of pedals with the pedals mounted forward of the rear wheel center axle.
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