AUTOCLAVE

This article appears in Volume V03, Page 45 of the Encyclopedia Britannica.

Encyclopedia Britannica - Main :: AUD-BAI

AUTOCLAVE , a strong closed

vessel

VESSEL (O. Fr. vaissel, from a rare Lat. vascellum, dim. of vas,
vase
- VASE
- VASE (through Fr. from Lat. vas, a vessel, pl. vasa, of which the singular vasum is rarely found; the ultimate
  root
  - ROOT (late O.E. rot, adopted from Scand., cf. Norw. and Swed. rot, Dan. rod; the true O.E. word was wyrt, plant, represented in Ger. Wurz or Wurzel; the ultimate root is the same in both words, and is seen in Lat. radix)
  - ROOT, ELIHU (1845– )
  is probably was-, to cover, seen in Lat: vestis, clothing, Eng. " vest," Gr. to-th c, and also in " wear," of garments)
, urn)

of metal in which liquids can be heated above their boiling points under pressure. Etymologically the word indicates a self-closing

vessel

VESSEL (O. Fr. vaissel, from a rare Lat. vascellum, dim. of vas,
vase
- VASE
- VASE (through Fr. from Lat. vas, a vessel, pl. vasa, of which the singular vasum is rarely found; the ultimate
  root
  - ROOT (late O.E. rot, adopted from Scand., cf. Norw. and Swed. rot, Dan. rod; the true O.E. word was wyrt, plant, represented in Ger. Wurz or Wurzel; the ultimate root is the same in both words, and is seen in Lat. radix)
  - ROOT, ELIHU (1845– )
  is probably was-, to cover, seen in Lat: vestis, clothing, Eng. " vest," Gr. to-th c, and also in " wear," of garments)
, urn)

(afirbs, self, and clavis, key, or clavus,

nail

NAIL (O. Eng. naegal, cf. Dutch, Ger., Swed. nagel; the word is also related to Lat. unguis, Gr. ovu, Sans. nakhas)

), in which the tightness of the

joints

JOINTS

is maintained by the

internal

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

Denis

Papin

PAPIN,
DENIS
- DENIS (DIoNysms), SAINT
- DENIS, JOHANN NEPOMUK COSMAS MICHAEL (1729-1800)
(1647-c. 1712)

, invented in 1681, which is still used in cooking, but the appliance finds a much wider range of employment in chemical industry, where it is utilized in various forms in the manufacture of candles,

coal

COAL

-tar

colours

COLOURS, MILITARY

, &c. Frequently an agitator, passing through a stuffing-box, is fitted so that thecontents may be stirred, and renewable linings are provided in cases where the substances under treatment exert a corrosive action on metal.

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