DRAUGHT-INDUCING DEVICES FOR CHIMNEYS

摘要

1307295 Chimney tops M H ZANIEWSKI 7 May 1970 [9 May 1969] 22220/70 Heading F4J A draught-inducing device comprises two branch members 1 and 2 in two orthogonal planes connected to a horizontal tubular member 6. The branch members which are semicylindrical in transverse cross-section, include projecting edges 4. A flange 5 extending from the vertical pipe 3 prevents the entry of rain or condensation water into the chimney.