SYSTEM FOR ACTUATING THE UNLOADING MAT IN SWITCHING MACHINES

摘要

A device is described for actuating the unloading mat in switching machines of a type comprising means capable of engaging a supporting roller for the said mat, so as to control its rotation and effect the unloading of the transported object during t he forward motion of the trolley holding said mat. Said means include a rack capable of engaging a sprocket solidly affixed to the shaft of one of the said mat rollers, and the said rack is mounted on a support subjec ted to the action of eccentric devices designed to govern the shifts from a position of rest to one of engaging with the said sprocket. According to a feature of the invention, said rack is mounted on said support wi th the capability of performing small shifts against elastic devices, along a direction parallel to the direction of the trolley's forward motion.