Ball picker dolly

作者: Lynn L. Ray

DOI:

关键词: EngineeringAxleBall (bearing)Structural engineeringVertical axisBracket

摘要: A ball picker dolly for retrieving tennis balls, or the like, comprised of a carriage having shaft, horizontal axle orthogonally attached to lower end said shaft and means mounted on motively supporting surface. Baskets hoppers varying configurations sizes can be secured by utilizing adjustable brackets. The various have gridded bottoms comprising plurality filiform members spaced apart define slot openings dimensioned admit balls forcibly pushed therethrough. At least one elongated bracket has spatially disposed pairs thereon is slidably engageable shaft. Ancillary securing comprise U-shaped prongs pass through in bracket, mating with either vertical axis bracket. Yet another provided at which helps support basket stabilizes part Both brackets are tightened down threaded bolts impinge upon

参考文章(3)
Jules Edlin, Garbage can carrier ,(1969)
Bernard M Walker, Shopper's cart ,(1948)