A mahogany brass and glass Wimshurst electrostatic generating machine, unsigned, early 20th century The twin contra-rotating glass discs applied with foil lozenges centred with silvered metal buttons at regular intervals pivoted between two wooden uprights also supporting a pair of brass electrostatic friction arms, flanked by comb pickups applied to insulated posts connected to Leyden jars at each end and with pivoted discharge arms to front between, the base with crank handle driving wooden drive pulleys, on bracket feet (one glass disc damaged), 66cm (26ins) wide; with a substantial electric induction coil, unsigned, early 20th century, enclosed within large black Bakelite cylinder between end panel supports fitted with substantial brass contact breaker to one end and applied with discharge assembly supported on two posts to top surface, on mahogany plinth base fitted with connection posts and a pivoted switch 44cm (17.25ins) wide; and a battery of four glass Leyden jars, 19th century, connected via brass cruciform armature to top and contained within painted pine box with twin handles, 17.5 (9ins) square, (3).
A mahogany brass and glass Wimshurst electrostatic generating machine, unsigned, early 20th century The twin contra-rotating glass discs applied with foil lozenges centred with silvered metal buttons at regular intervals pivoted between two wooden uprights also supporting a pair of brass electrostatic friction arms, flanked by comb pickups applied to insulated posts connected to Leyden jars at each end and with pivoted discharge arms to front between, the base with crank handle driving wooden drive pulleys, on bracket feet (one glass disc damaged), 66cm (26ins) wide; with a substantial electric induction coil, unsigned, early 20th century, enclosed within large black Bakelite cylinder between end panel supports fitted with substantial brass contact breaker to one end and applied with discharge assembly supported on two posts to top surface, on mahogany plinth base fitted with connection posts and a pivoted switch 44cm (17.25ins) wide; and a battery of four glass Leyden jars, 19th century, connected via brass cruciform armature to top and contained within painted pine box with twin handles, 17.5 (9ins) square, (3).
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
