Boiler tube cleaning apparatus

Claim 1

APPARATUS FOR CLEANING TUBES IN A BOILER COMPRISING UPPER AND LOWER SUBSTANTIALLY HORIZONTAL TRACKS MOUNTED IN A STATIONARY POSITION ADJACENT THE TOP AND BOTTOM OF THE BOILER, RESPECTIVELY, AND EXTENDING TRANSVERSELY OF THE TUBES; AN UPRIGHT STANDARD SUBSTANTIALLY SPANNING THE SPACE BETWEEN SAID TRACKS; A TRAVELING ANCHORING DEVICE MOVABLY SUPPORTED BY AND RIDEABLE ON SAID UPPER TRACK, AND ATTACHING MEANS SECURING THE UPPER END OF SAID STANDARD TO THE DEVICE WITH THE STANDARD DEPENDING FROM THE DEVICE AND MOVABLY WITH THE DEVICE ALONG SAID TRACK WHILE SECURED TO THE DEVICE; A TRAVELING ANCHOR DEVICE SUPPORTED BY AND RIDING ON SAID LOWER TRACK, AND MEANS MOUNTING THE LOWER END OF SAID STANDARD ON SAID SECOND-MENTIONED DEVICE MOVABLE ALONG SAID LOWER TRACK WHILE HAVING THE STANDARD MOUNTED ON IT; AN EJECTOR UNIT INCLUDING POWER-OPERATED MEANS FOR THRUSTING A BOILER TUBE CLEANING INSTRUMENT INTO AND ALONG THE LENGTH OF A BOILER TUBE; AND MEANS MOUNTING SAID EJECTOR UNIT ON SAID STANDARD, WITH THE UNIT ENTIRELY SUPPORTED BY THE STANDARD, ACCOMMODATING POSITIONING OF THE UNIT AT VARIOUS POSITIONS ON THE STANDARD WITH SAID UNIT HELD STATIONARY IN SAID POSITIONS.