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Expired
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Frederick Royston
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Individual
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Individual
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Publication of GB190415099ApublicationCriticalpatent/GB190415099A/en
Specific Sealing Or Ventilating Devices For Doors And Windows
(AREA)
Wing Frames And Configurations
(AREA)
Abstract
15,099. Royston, F. July 6. Window appliances; valves; ventilators.-A strip a of wood or other material is secured to the top of a window frame, and is provided with a number of holes f, through which air can pass on slightly lowering the upper sash d, Fig. 4. In each hole may be placed a disc valve g, Fig. 2, of celluloid or other light material, retained by metal strips h driven into the wood.
GB190415099D1904-07-061904-07-06Ventilator for the Top of Window Sashes
ExpiredGB190415099A
(en)