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John Edward Walker
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Closing And Opening Devices For Wings, And Checks For Wings
(AREA)
Abstract
19,612. Walker, J. E. Oct. 2. Window holders.- Pinions C, pivoted in metal boxes B let into the sash stiles, gear with racks s A fixed to the window frame, and are retarded by check springs or pawls D, so as to hold the sash in any required position without using weights and cords.
GB190119612D1901-10-021901-10-02Improvements in Sliding Windows
ExpiredGB190119612A
(en)