Ladder tray support attachment

Claim 1

A demountable ladder tray support comprising: a pair of support plates dimensioned for clamping on opposite sides of a ladder side rail; a pair of threaded studs carried by a first of said plates and projecting substantially perpendicularly thereto, said studs being spaced apart to straddle said side rail; the second of said plates having openings positioned for and slidably receiving said studs with the latter projecting therethrough to an exterior side of said second plate; helical springs on said pair of studs mounted between and in compression engagement with said plates; manually engageable nuts threaded on said stud ends for clamping said plates together on said side rail; a third stud carried by said second plate and projecting substantially perpendicularly from said exterior side thereof; a tray support bracket comprising a rigid elongated strip having a normally upright end providing said bracket side, a contiguous normally lateral portion for spacing a bracket supported tray from said side rail, a third normally upright portion depending from said second portion, and a fourth portion contiguous to and extending laterally from said third portion, said bracket side having an opening for and receiving said third stud and providing a pivotal connection for relative rotational displacement of said bracket; manually engageable means on said third stud retaining said pivotal connection; index means mounted on said second plate exterior side and said bracket side for locking said bracket and second plate in selected rotated positions, comprising a pin carried by one of said sides, and a plurality of arcuately spaced openings in the other of said sides dimensioned and positioned for receiving said pin; and a tray having a side and bottom mounted on and supported by said third and fourth portions of said strip, respectively.