An Improvement in Apparatus for Clearing or Unstopping Waste Pipes and particularly Publichouse Pewter Wells.

摘要

5695. Frailing, J. A. March 13. Cleansing waste-pipes. A hand pump is fitted with a straight or bent nozzle g for insertion into the pipe. The junction is made air-tight by a rubber washer m backed by a shoulder l. The device is specially adapted for the waste-pipes of public-house pewter wells.