Abstract
The need to elevate items of widely varying characteristics under random load conditions presents an unusual engineering problem. The riser described provides a means of handling packets, parcels, or mailbags in a vertical path. Two belts contained in a trunking are normally held in close contact with each other against the back plate by means of an air bag providing constant pressure but allowing rapid variation in volume. Articles are introduced between these two bands on the horizontal plane, enveloped by the belts, and carried positively into the heel of the trunking where, after transition into the vertical plane, the articles are conveyed to the point of discharge.
Get full access to this article
View all access options for this article.