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Expired
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Edgar Godwin Harcourt
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Individual
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Individual
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Publication of GB190404820ApublicationCriticalpatent/GB190404820A/en
4820. Harcourt, E. G. Feb. 27. Window opening and closing apparatus.-A fanlight or casement k is operated by an arm j engaging a swivelling projection i on a nut d sliding on a fixed support c and actuated by a screw f carrying a grooved pulley h for a cord. The arm j is prevented from rattling by a spring l, and the operating-cord is provided with guides m. Adjacent fanlights &c. may be actuated simultaneously by projections i on opposite sides of a single nut d. According to the Provisional Specification, a worm and worm-wheel may be used instead of the screw and nut, the piece d having an oscillatory movement and being connected to the fanlight by a link pivoted at both ends.
GB190404820D1904-02-271904-02-27Improvements relating to Fanlight and similar Opening and Closing Devices.
ExpiredGB190404820A
(en)