Baghouse construction

Claim 1

IN A BAGHOUSE CONTRUCTION COMPRISING A HOUSING HAVING UPWARDLY EXTENDING WALLS, A LOWER CELL PLATE FLOOR AND AN UPPER TUBE SUSPENSION FLOOR EXTENDING BETWEEN SAID WALLS, A PLURALITY OF FLEXIBLE FILTER TUBES CLOSED AT THE TOP AND VERTICALLY SUPPORTED BETWEEN SAID FLOORS IN OPERATIVE POSITION AND MEANS FOR DIRECTING PARTICLE CONTAINING GASES THROUGH THE WALLS OF SAID TUBES FOR REMOVAL OF SAID PARTICLES BY MEANS OF A FILTERING PROCESS, THE IMPROVEMENT COMPRISING AN ATTIC LOCATED ABOVE SAID SUSPENSION FLOOR, SAID SUSPENSION FLOOR BEING SUBSTANTIALLY IMPERFORATE WHEREBY THE ATMOSPHERE IN THE ATTIC IS SEPARATED IN SUBSTANTIALLY SEALED RELATION FROM THE ATMOSPHERE IN THE TUBE SECTION BETWEEN THE FLOORS, INLET AND OUTLET MEANS IN COMMUNICATION WITH THE SPACE BETWEEN THE FLOORS FOR THE PASSAGE OF GASES TO AND FROM THE FILTER TUBES, SEPARATE INLET AND OUTLET MEANS CONNECTED WITH THE ATTIC FOR THE PASSAGE OF ATMOSPHEREIC AIR THERETHROUGH, FANS FOR CIRCULATING SAID ATMOSPHERIC AIR FROM THE SEPARATE INLET TO THE OUTLET THROUGH THE ATTIC, MEANS EXTENDING INTO THE ATTIC RELEASABLY SUSPENDING THE UPPER END PORTIONS OF THE FILTER TUBES FOR RAISING AND LOWERING THE FILTER TUBES TO AND FROM OPERATIVE POSITION, AND INCLUDING WALKWAYS LOCATED ON SAID CELL PLATE FLOOR AND ON SAID SUSPENSION FLOOR BETWEEN ROWS OF TUBES WHEREBY WORKMEN CAN STAND ON SAID FLOORS, AND MEANS FOR SECURING A CABLE TO THE UPPER END OF A TUBE WHEREBY THE TUBE CAN BE LOWERED TO SAID CELL PLATE FLOOR FOR MAINTENANCE AND REPLACEMENT.