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Description: | L.C.E.19. (old departmental catalogue number in aluminium paint). Nat. Phil. LCE 19 NP 374 (very faintly on a preprinted gummed label, removed). W.G. PYE & CO CAMBRIDGE ENG. (makers trade plate stencilled in gold on grey enamel paint). DES after STURGEON,William. circa 1830 East India Company Royal Military College of Addiscombe, London, England. DES after CAGNIARD DE LA TOUR,Charles. 1819 Paris, France. DES STRUTT, John,William,3rd Baron Rayleigh 1878 Cambridge, England. Incorrectly catalogued, in 1957, by the department of Natural Philosophy as an electric motor. This instrument is is an electrically driven acoustic siren. It has a mechanical revolution counter driven from a worm gear on the axle of the disc. There is a pin on the gear train which strikes a bell every one hundred revolutions. The sound is produced by slots in a disc which is driven by a simple elctric motor. There is a flywheel, friction driven , between the motor and the disc. The motor is a development of the mouse-mill motor or switched field reluctance type. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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