Apparatus for forming fibrous blankets

Claim 1

IN AN APPARATUS FOR PRODUCING A FIBROUS BLANKET OF LAPPED LAYERS OF GLASS FIBERS, SAID APPARATUS CONSISTING OF A PLURALITY OF FIBER FORMING APPARATUSES EACH COMPRISING MEANS FOR PROVIDING A HIGH VELOCITY, DOWNWARDLY MOVING, TUBULAR BLAST OF GAS AND MEANS FOR FEEDING MOLTEN GLASS THEREINTO FOR PRODUCING A CONTINUOUS, DOWNWARDLY MOVING, TUBULAR VEIL OF FINE FIBERS ENTRAINED IN SAID BLAST, SAID APPARATUSES BEING ARRANGED IN A LONGITUDINALLY EXTENDING ROW, AN OPEN ENDED VERTICALLY EXTENDING HOOD ERECTED BENEATH SAID FIBER FORMING APPARATUSES AND HAVING A LOWER END WIDER THAN ITS UPPER END, AN ACCUMULATING CONVYOR HAVING A WIDTH EQUAL TO THE WIDTH OF THE LOWER END OF SAID ENCLOSURE AND BEING MOUNTED FORLINEAL MOVEMENT ACROSS THE LOWER END OF SAID ENCLOSURE LONGITUDINALLY THEREOF AND MEANS FORMOVING SAID CONVEYOR AT A CONTROLLED LINEAL SPEED, THE IMPROVEMENT COMPRISING, OPEN ENDED TUBULAR GUIDE FOR EACH OF SAID FIBER FORMING APPARATUSES, EACH OF SAID GUIDES HAVING AN UPPER END BROAD ENOUGH TO ACCEPT THE VEIL OF FIBERS PRODUCED BY ITS ASSOCIATED FIBER FORMING APPARATUS AND AN OPEN LOWER END BEING MOUNTED FOR OSCILLATORY MOVEMENT ON A HORIZONTAL PIVOT LINE EXTENDING PARALLEL TO THE DIRECTION OF MOVEMENT OF SAID CONVEYOR, AND MECHANISM FOR OSCILLATING EACH OF SAID GUIDES IN CONTROLLED FREQENCY AND AMPLITUDE FOR LAPPING SAID VEILS BACK AND FORTH ON SAID CONVEYOR IN SHINGLED LAYERS AS SAID CONVEYOR MOVES ACROSS BENEATH SAID GUIDES.