a printing machine 10 illustrating the present invention for purposes of description the printing machine 10 is illustrated as a screen printing machine which includes a supporting frame structure 11 on which one or more printing screens 12 and associated squeegees 12a are mounted each screen 12 and associated squeegee 12a defines a printing station mounted on the frame 11 is an endless drive which is illustrated as a chain 13 or the like threaded over end sprockets 14 15 which are rotatably journaled to suitable axles 14a 15a it will be understood that a pair of opposed chains 13 13 as seen in fig2 are preferred each being threaded about complementary sprockets 14 and 15 the means for energizing the chain drive 13 13 may comprise a motor 16 the output shaft 16a of motor 16 having a driving sprocket 17 connected in driving relationship to a driving sprocket 18 suitably connected to axle 14a by a flexible drive threaded to sprockets 17 and 18 thus when the motor is activated the drive thereof is transmitted to the axles 14a and associated sprocket to drive chain 13 13 whereby the pallets mean 19 are indexed through a printing station a plurality of pallet means or members 19 are connected along the respective drive chain 13 13 at spaced intervals therealong referring to fig2 4 and 5 each pallet means 19 comprises a base member 20 which is suitably secured to the respective drive chains 13 13 at spaced intervals therealong at best seen in fig1 the respective pallet means 19 are connected to the endless chain 13 13 defined by an upper flight and a lower flight the respective pallet means 19 being successively indexed as the chain drive is actuated one end of.