Quarter scale experimental bichromate battery built by David Hemsley for the determination of power output and life expectancy when applied to pipe-organ electric clavier actions in the late 1860s
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Welcome to David Hemsley's Site
Henry Bryceson (Bryceson Brothers) pioneered electric action in England during the late 1860s.
The firm employed electro-pneumatic technology originally developed by C. S. Barker in France.
Barker built the world's first electric action organ in the Collegiate Church of Saint-Laurent,
Salon, Bouches du Rhone in 1866.
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