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AUTOCLAVE

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Originally appearing in Volume V03, Page 45 of the 1911 Encyclopedia Britannica.
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AUTOCLAVE , a strong closed See also:

vessel of See also:metal in which liquids can be heated above their boiling points under pressure. Etymologically the word indicates a self-closing vessel (afirbs, self, and clavis, See also:key, or clavus, See also:nail), in which the tightness of the See also:joints is maintained by the See also:internal pressure, but this characteristic is frequently wanting in the actual apparatus to which the name is applied. The prototype of the autoclave was the digester of See also:Denis See also:Papin, invented in 1681, which is still used in cooking, but the appliance finds a much wider range of employment in chemical See also:industry, where it is utilized in various forms in the manufacture of candles, See also:coal-See also:tar See also:colours, &c. Frequently an • agitator, passing through a stuffing-See also:box, is fitted so that thecontents may be stirred, and renewable linings are provided in cases where the substances under treatment exert a corrosive See also:action on metal.

End of Article: AUTOCLAVE

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