Abstract: A plastic rack or cube, for supporting and translating load units therein, having side walls and end walls formed of a plurality of unitary integrally formed molded panel units connected together at lateral tabs and tab receiving sections, the lateral ends of the walls being connected to corner posts and forming a rectilinear cube-type frame open at its top and bottom. A supporting and nesting member is removably attachable to the inner surfaces of the end walls to hold the load units therebetween. The components of the nesting members can be integrally formed and molded in and with the panel units. One or more medial or intermediate wall units can be removably attached transversely to and between side wall or end wall panel units to provide a plurality of chambers for reception of the load units, supplementary nesting members being attachable to these intermediate walls.

Abstract: A plastic conveyor trolley for an inverted T-bar monorail conveyor track is provided. The conveyor trolley comprises a pair of upper track-supported wheels and pairs of lower wheels engageable with and rotatable at times upon the underside surfaces of the track, the upper wheels being rotatably mounted on stub axles secured to the upper portions of the trolley arms, the lower wheels being rotatably mounted on bearing portions integrally formed in intermediate portions of the trolley arms, and a pendant member secured to and between the lower portions of the trolley arms. The lower wheels lie in a plane below and substantially parallel with the plane of the upper wheels.

Abstract: A monorail conveyor system having an inverted plastic T-bar monorail track suspended from supporting structural members conjoined by conventional bolt and nut fasteners, a plurality of plastic conveyor trolleys operatively movable on the T-bar monorail by a drive chain comprising a plurality of plastic chain links articulatedly connected together, the drive chain being driven by conventional conveyor drive chain power mechanism. Each plastic T-bar monorail track section comprises an upstanding stem having a laterally extending pendant lobe on each side thereof and a pair of laterally outwardly directed flanges at the distal end of said stem for both horizontal and inclined travel of the conveyor trolleys.

Abstract: A two-piece plastic clevis device for a monorail conveyor trolley system, the device having an upper trolley connected member and a manually engageable and disengageable lower clevis member which is connected to and supports a parts carrying hanger. The upper clevis member has a flanged member on each side of a medial plate or stem, the lower member having a pair of spaced apart hub-supported arcuate bodies that engage the flanged members on each side of the medial plate and suspend the hanger at and from the surfaces of engagement.

Abstract: A plastic arcuate turn wheel structure for a plastic monorail conveyor structure is disclosed. The turn wheel structure is driven by a plastic chain drive and comprises a supporting structural framework, an arcuate inverted T-bar track section, a disc supporting plate, a turn wheel which is either an idler or a driven wheel, an axial bearing hub for said wheel, and a bearing thrust collar for said wheel.

Abstract: A plastic conveyor trolley structure having plastic bearings and made of a super tough plastic material, comprises a pair of complementary arms each supporting a wheel for rotation on roller bearings held in a fixed inner race forming an integral part of a stub axle on which the trolley wheel is rotatable. The trolley is readily movable on the flanges of an I-beam monorail. A pendant member secured to and between the lower ends of the trolley arms is engaged by the conveyor drive chain to move the trolley along on the monorail. Metal screws are used to hold the depending member to the arms and to secure the stub axle for the trolley wheel to its supporting arm.