Improvements relating to tubes for heating bakers' ovens and for like purposes

摘要

332,838. Talbot, W. J., and Talbot- Stead Tube Co., Ltd. Oct. 18, 1929. Bakers' ovens. - The heat radiating surface of a Perkins' tube a is increased by fins in the form of longitudinal strips b attached to the tube near one edge so as to project tangentially us shown. Specification 22579/00 is referred to.