Screen stencil printing machine

Claim 1

IN SCREEN STENCILING APPARATUS FOR PRINTING FLAT ARTICLES, AN ELONGATED HORIZONTAL PLATFORM, A FIRST ENDLESS MOVING CARRIER WITH GUIDE AND OPERATING MEANS THEREFOR TO PROVIDE A PORTION THEREOF ADJACENT AND MOVING PARALLEL TO SAID PLATFORM, PICKUP AND POSITIONING MEANS UPON SAID CARRIER TO LOCATE AND FEED ARTICLES TO BE PRINTED ALONG SAID PLATFORM, A FLAT PRINTING SCREEN, A SECOND ENDLESS CARRIER WITH GUIDE AND OPERATING MEANS THEREFOR TO PROVIDE A PAIR OF SPACED AND PARALLEL PORTIONS THEREOF MOVING IN OPPOSITE DIRECTIONS ADJACENT AND PARALLEL TO SAID PLATFORM, DRIVE MEANS TO OPERATE BOTH SAID CARRIERS CONTINUOUSLY AND AT EQUAL TRANSLATORY SPEEDS, A VERTICALLY SLIDABLE COUPLING CONNECTION BETWEEN SAID SCREEN AND SAID SECOND CARRIER, TO EFFECT PERIODIC RECIPROCATING AND UP-AND-DOWN MOVEMENTS OF SAID SCREEN, SAID POSITIONING MEANS BEING OPERABLY COORDINATED WITH SAID SECOND CARRIER AND SCREEN SUCH AS TO CAUSE SAID SCREEN TO BE LOWERED UPON SAID PLATFORM AND INTO PRINTING POSITION WITH SAID ARTICLES DURING ITS OPERATIVE RECIPROCATING HALF-CYCLES, AND TO CAUSE SAID SCREEN TO BE RAISED FROM SAID PLATFORM DURING ITS ALTERNATE INOPERATIVE RECIPROCATING HALF-CYCLES, RESPECTIVELY.