1. A MACHINE FOR PLEATING METAL FABRIC AND THE LIKE, COMPRISING (A) A FRAME HAVING THEREON A FLAT SURFACE ACROSS WHICH SUCCESSIVE SECTIONS OF A LENGTH OF A METAL FABRIC ARE FED, (B) A FIRST PLATE MOUNTED ON SAID FRAME AT ONE SIDE OF SAID SURFACE FOR RECIPROCATION INTO AND OUT OF AN OPERATIVE POSITION IN WHICH ITS LOWER EDGE IS ADAPTED TO SECURE THE LEADING END OF A SECTION OF METAL FABRIC ON SAID SURFACE, (C) A SECOND PLATE MOUNTED ON SAID FRAME AT THE SAME SIDE OF SAID SURFACE IN CONFRONTING, GENERALLY PARALLEL RELATION TO SAID FIRST PLATE, (D) MEANS FOR INTERMITTENTLY RECIPROCATING SAID SECOND PLATE ACROSS SAID SURFACE TOWARD AND AWAY FROM SAID FIRST PLATE, WHEN FIRST PLATE IS IN ITS OPERATIVE POSITION, (E) CLAMPING MEANS FOR RELEASABLY SECURING THE TRAILING END OF A SECTION OF METAL FABRIC BENEATH SAID SECOND PLATE, EACH TIME THE SAID SECOND PLATE IS ADVANCED TOWARD SAID FIRST PLATE, THEREBY TO ADVANCE THE TRAILING ENDS OF SUCCESSIVE SECTIONS OF SAID FABRIC ACROSS SAID SURFACE WITH SAID SECOND PLATE TOWARD SAID FIRST PLATE, (F) FOLDING MEANS MOVABLE INTO THE SPACE BETWEEN SAID PLATES DURING EACH ADVANCE OF SAID SECOND PLATE TO ENGAGE AND FOLD SUCCESSIVE SECTIONS OF FABRIC SUCCESSIVELY INTO THE SPACE BETWEEN SAID PLATES TO BE PRESSED THEREBETWEEN ON EACH ADVANCE OF SAID SECOND PLATE, (G) MEANS FOR INTERMITTENTLY RECIPROCATING SAID FIRST PLATE, WHEN SAID SECOND PLATE IS IN ITS EXTREME ADVANCED POSITION, TO LIFT SAID FIRST PLATE OVER THE FOLD BETWEEN SAID PLATES, AND THEN TO DROP SAID FIRST PLATE DOWNWARDLY BEHIND THE TRAILING SIDE OF THE FOLD TO SECURE THE LEADING END OF THE NEXT SUCCESSIVE SECTION OF FABRIC ON SAID SURFACE, AND (H) MEANS OPERATIVE, AFTER EACH RECIPROCATION OF SAID FIRST PLATE, FOR RELEASING SAID CLAMPING MEANS TO RELEASE THE METAL FABRIC DURING THE SUCCEEDING MOVEMENT OF SAID SECOND PLATE AWAY FROM SAID FIRST PLATE.