Abstract: A cover assembly is used with any one of a plurality of hopper cars each including a top side having a trough hatch therein, coaming extending around the perimeter of the trough hatch, and hinge pin brackets attached to the top side of the hopper car at one of a plurality of predetermined vertical heights relative to an upper edge of the coaming. The cover assembly permits the hatch cover to be fastened to hopper cars having hinge pin brackets provided with pin axes located at one of the plurality of heights relative to the upper edge of the coaming, and includes a hatch cover and a universal hinging system for use therewith. The hinging system includes a bracket and a plurality of hinge eye plates. Each of the plurality of hinge eye plates includes a bracket connection surface defined in a plane and an eye segment defining a opening having a central axis.

Abstract: A syringe assembly of the type including a frangible open ended tubular barrel snugly received within a longitudinally slotted tubular body including at least partial end walls between which the barrel is received has its longitudinally slotted tubular body enclosed within a thick walled cylindrical sleeve constructed of translucent plastic material. The sleeve is initially heated to effect its expansion and thereafter telescoped over the longitudinally slotted tubular body of the syringe and allowed to cool so as to shrink tightly about the body to cover the slotted portions thereof from the exterior of the body.