Screen printing machine for round and flat articles

Claim 1

A screen printing machine for applying indicia on an article such as a bottle or the like having round, conical, elliptic or rectangular shape, said machine comprising in combination, a frame structure, a first shaft longitudinally extending in said structure, a carriage body slidingly arranged on said first shaft, said carriage having a bore parallel to said first shaft, a second shaft extending parallel to said first shaft, said second shaft passing freely through said bore in said carriage, movable stops on said second shaft for limiting the travel of said carriage, means for reciprocatingly moving said carriage, a printing screen located in front of said carriage, a squeegee above said screen, first means for lowering and lifting said squeegee into and out of contact, respectively, with the upper side of said screen, an article holder arranged below said screen, and second means for lifting and lowering said holder for bringing said article into and out of contact, respectively, with the underside of said screen, a bar having a substantially square section, said bar extending parallel to both said first and said second shaft, a rearwardly extending bracket on said carriage, at least two freely movable rollers on said bracket, said rollers engaging said bar on top and bottom, respectively, thereof, interchangeable means for moving reciprocatingly said screen and for rendering said squeegee stationary, and interchangeable alternate means for immobilizing said screen and for moving reciprocatingly said squeegee.