Printing stencil and printing stencil holder with tensioning means

Claim 1

PRINTING STENCIL ASSEMBLY FOR A SCREEN STENCIL PRINTING MACHINE COMPRISING A PRINTING STENCIL INCORPORATING A STENCIL BODY MEMBER, SUPPORT MEANS TO WHICH IS ATTACHED SAID STENCIL BODY MEMBER, SAID SUPPORT MEANS COMPRISING TWO RAIL MEMBERS WHICH ARE RESISTANT TO BENDING IN THE PLANE OF SAID STENCIL BODY MEMBER, SAID STENCIL BODY MEMBER INCLUDING A PAIR OF PARALLEL LATERAL SIDES, ONE SUCH RAIL MEMBER CONNECTED TO EACH LATERAL SIDE, AT LEAST ONE HOLDER MEANS OPERABLY CONNECTED WITH EACH RAIL MEMBER, AT LEAST ONE OF SAID HOLDER MEANS AT ONE LATERAL SIDE OF SAID PRINTING STENCIL BEING PROVIDED WITH TENSIONING MEANS ENABLING LATERAL DISPLACEMENT OF THE RAIL MEMBER ASSOCIATED WITH SAID LAST-MENTIONED HOLDER MEANS AGAINST THE PRE-STRESS OF A SPRING, SAID LAST-MENTIONED HOLDER MEANS INCLUDING A SUPPORT PROVIDED WITH A BLIND HOLE, SAID TENSIONING MEANS COMPRISING A THREADED SPINDLE EXTENDING INTO SAID BLIND HOLE, A NON-ROTATABLE NUT MEMBER MOUNTED FOR AXIAL MOVEMENT DISPOSED IN SAID BLIND HOLE, SAID THREADED SPINDLE PIERCINGLY EXTENDING THROUGH SAID NUT MEMBER, A SPRING MEMBER LOCATED WITHIN SAID BLIND HOLE AND BEARING AGAINST SAID NUT MEMBER.