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Alfred George Preedy
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Individual
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Publication of GB190503335ApublicationCriticalpatent/GB190503335A/en
3335. Preedy, A. G. Feb. 17. Chimney a n d ventilating-shaft t o p s.-Air passes through an annular space between a chimneypot D, or the top of a shaft, and a ring A which is attached to the chimney pot or shaft by lugs or brackets, and forms a continuation of the lower of two truncated cones B arranged as shown. A second annular air passage is formed between an upper cone C and the cones B, which support the part C by means of suitable brackets.
GB190503335D1905-02-171905-02-17An Improved Chimney and Ventilating Shaft Top.
ExpiredGB190503335A
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