摘要:
A device wherein a split T-pipe having a water-distributing pipe is joined to an already laid large-diameter water-service pipe at a portion thereof and a cylindrical cutter covered with a cover sleeve is inserted in said water-distributing pipe, thereby boring a required hole in the Water-service pipe at a part thereof, said covering sleeve stopping gaps between tooth edges at the front-end periphery of the cylindrical body to prevent chips from being discharged into the outside through the gaps between said tooth edges. Other advantages and details of the arrangement will be made clear.
摘要:
THIS INVENTION RELATES TO A REMOVABLE SEAL PLUG FOR CLOSING THE UPPER END OF A SELF-PUNCHING TO FITTING. MORE PARTICULARLY, THE INVENTION RELATES TO A SELF-PUNCHING T FITTING INCLUDING A TUBULAR BODY ADAPTED TO BE WELDED TO A PIPE, A PUNCH THREADABLY POSITIONED WITHIN THE TUBULAR BODY ADAPTABLE FOR ROTATION TO ENGAGE AND PUNCH A HOLE IN THE PIPE, AND AN IMPROVED SEAL PLUG MEMBER FOR CLOSING THE UPPER END OF THE TUBULAR BODY MEMBER, THE PLUG MEMBER SERVING TO ACCURATELY POSITION AND PREVENT THE MOVEMENT OF THE PUNCH MEMBER IN THE BODY AND TO SECURELY SEAL THE BODY AGAINST FLUID LEAKAGE.