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Ventilator.
Patent for a ventilating cowl for buildings for fire prevention by causing smoke and sparks to pass outside of a building or deflate to the surface below. The cowl is cone shaped with a deflecting surface and has several rings through which smoke and sparks can pass through to the outside.
Date:
November 30, 1915
Creator:
Ashorn, Inshrish
System:
The Portal to Texas History