Abstract: The squeegee arm and screen frame portions of a tilt screen type screen printing machine are pivotally connected to specially designed rocker housings slidably movable along horizontal support rods. The rocker housings have portions which are not rotated by pivoting of the squeegee arm and screen frame, thus permitting such rocker housing portions to be horizontally driven along the support rods by rodless air cylinders mounted on the machine. Additionally, the nonrotatable portion of the screen frame rocker housing carries a horizontally disposed gear rack which can be operatively mated with a pinion drive gear portion of a rotatable fixture supporting a round item to be printed so that horizontal translation of the rack rotationally drives the fixture during the screen printing process. Because of the rocker housing design, upward tilting and horizontal movement of the screen frame does not disrupt the rack and pinion registry.