Machine for perforating fiber webs

Claim 1

A MACHINE FOR PERFORATING A WEB WHICH COMPRISES, IN COMBINATION, A MACHINE FRAME AND HAVING THROUGHOUT THE CENTRAL PART OF ITS SURFACE, A STRAIGNT LENGTHWISE GROOVE; A PLURALITY OF SHARP-TIPPED WEB-PERFORATING NEEDLES IMBEDDED IN SAID GROOVE IN A SUITABLE PATTERN AND EXTENDING RADIALLY SO THAT THEIR SHARP TIPS PROTRUDE SLIGHTLY ABOVE THE CYLINDRICAL SURFACE OF SAID CYLINDER THUS FORMING AN IMBEDDED NEEDLE ZONE ABOUT THE CYLINDER; AN AUXILIARY ROLL FOR WEB FEEDING AND AN AUXILIARY ROLL FOR WEB DISCHARGE INSTALLED IN CLOSED VICINITY TO EACH OTHER ABOVE SAID CYLINDER AND ADAPTED TO HOLD THE WEB AGAINST SAID CYLINDER AS THE WEB MOVES WITH THE SURFACE OF SAID CYLINDER; EACH OF SAID ROLLS ALSO BEING PROVIDED WITH A STRAIGHT LENGTHWISE GROOVE CORRESPONDING TO THE GROOVE IN SID CYLINDER; A PLURALITY OF BRISTLES IMBEDDED IN THE GROOVES OF SAID ROLLS, THE TIPS OF SAID BRISTLES EXTENDING RADIALLY JUST TO THE SURFACE OF SAID ROLLS AND FORMING ZONES OF THE SAME WIDTH AS SAID IMBEDDED NEEDLE ZONE; MEANS FOR SPRAYING WATER ONTO THE WEB SOON AS IT PASSES SAID FEEDING ROLL; MEANS FOR DRYING OF THE WEB AFTER SPRAYING, SAID MEANS ENCOMPASSING THE CYLINDRICAL SURFACEOF SAID CYLINDER FROM A POINT NEAR SAID SPRAYING MEANS TO A POINT NEAR SAID WEB DISCHARGE ROLL; A PLURALITY OF FURTHER ROLLS FOR LEADING OUT THE WEB AFTER PASSING SAID DISCHARGE ROLL; AND DRIVING MEANS FOR POSITIVELY DRIVING SAID CYLINDER IN SYNCHRONIZATION WITH SAID ROLLS FOR WEB FEEDING AND WEB DISCHARGE AND AT LEAST SOME OF SAID PLURALITY OF FURTHER ROLLS AT LIKE PERIPHERAL SPEED AS THE SPEED OF SAID WEB.