A siren from J. Salleron, 24 Rue Pavee ( Ou Marais) Paris, Circa 1850-1880, in original case. In perfect working condition. It comprises a small air-chest at bottom with an oblique-perforated rotor and worm drive above. When air from a bellows is forced into the bottom, it blows out from a series of oblique 20 holes in the top of the air chest. These holes coincide with others in the rotor and cause it to rotate at high velocity, emiting and very loud wailing sound. By sliding the headgear to one side causes the worm on the rotor to engage with a pinion which in turn on the dials to revolve, indicating the speed of rotation. Case dimensions 20,5 x 12,5 x 8 cm Boerhaave Museum have one in there collection as well. See website page: http://www.museumboerhaave.nl/object/sirene-in-kist-v12117/ Look for shop information on website page http://www.vanleestantiques.com/vanleestantiques/
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Van Leest Antiques
Van Leest Antiques, based in Utrecht in the Netherlands, specialises in antique scientific and medical instruments. Their collection covers mainly scientific and medical antique instruments: barometers, globes and planataria, nautical instruments, anatomical models, and pharmacy items. Toon Van Leest travels regularly in Europe and visits trade fairs, auctions, and antique dealers to collect stock and to find pieces to fulfil his clients' unusual requests.
As well as being an avid antique collector and dealer, Toon Van Leest is also a dentist. He believes that antiques are a stable investment, not reliant on trends or fashion, and have truly lasting value. Above all, he says, antiques are timeless and never lose their beauty.