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Friedrich Schofer
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Individual
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Publication of GB190723891ApublicationCriticalpatent/GB190723891A/en
23,891. Schofer, F. Oct. 29. Shafts.-Chimneys surrounded by ventilation shafts communicating with one another by perforations through the dividing ribs are built of hollow fire-clay or like blocks, the inner walls of which have joints at a different level from the outer walls. Perforations g through the partitions b between the ventilation shafts e allow air to pass between them, the air being finally delivered into the room by openings f. An opening d is provided by which the stove flue communicates with the chimney i. The inner walls may be glazed.
GB190723891D1907-10-291907-10-29Improvements in Chimneys and Ventilating Devices.
ExpiredGB190723891A
(en)