concentratorn.
/ˈkɒnsntreɪtə/, /ˈkɒnsɛntreɪtə/, U.S. /ˈkɑnsənˌtreɪdər/ 1. A device or apparatus for concentrating a substance, solution, etc. Cf. concentrate v. 3a.
ΘΚΠ
society > occupation and work > equipment > [noun] > for performing other processes
purchase1711
adjuster1747
concentrator1804
steamer1814
isolator1855
spacer1857
tumbler1857
plough1860
aspirator1863
trap1877
tumbling-box1877
plicater1880
comparator1883
tumbler-drum1883
rumbling barrel1894
copier1917
programmer1945
simulator1947
tensioner1950
platformer1953
hydrogasifier1966
snubber1972
1804 Repertory Arts, Manuf., & Agric. 5 419 Contracters or Concentrators of Air operate by diminishing the area of air at the fire-place of a chimney.
1833 B. Silliman Man. Sugar Cane 66 Without running any risk of burning the sugar, the contents of the concentrator are emptied into the cooler.
1885 Sanitary Jrnl. 8 108 When the contents of concentrators have, by the process of evaporation, come to a consistency of thin mud it is run into the dryer.
1949 Paper Making (Brit. Paper & Board Makers' Assoc.) (1950) v. 75 If the pulp is to be used in the same mill as that in which it is prepared, it is taken to concentrators, which concentrate it to about 5 per cent. consistency.
1983 Brit. Med. Jrnl. 13 Aug. 459/2 The oxygen concentrator..separates nitrogen from air on a ‘molecular sieve’.
2011 Water & Wastewater Internat. Aug. 47/1 The brine concentrator is designed with very low temperature difference between the heating medium and the boiling brine.
2. Mining. An apparatus or installation for concentrating ore (cf. concentrate v. 3b); a factory in which the concentration of ore takes place.Cf. ore concentrator n. at ore n.2 Compounds 2b.
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society > occupation and work > equipment > equipment for treating ores > [noun] > for concentrating
concentrator1856
strake1887
1856 U.S. Patent 14,182 1/1 I..have invented a new and Improved Machine for Separating Copper and other Metals from their Ores by Washing, which I call a ‘Concentrator’.
1873 J. S. Phillips Metallurgist's Compan. (ed. 2) 468 These somewhat ancient hinged frames are probably the most exacting and perfect concentrators yet devised.
1912 Mineral Resources U.S. 1911 (U.S. Bureau of Mines) 884 The plant includes a 1,000-ton concentrator, in which the iron oxides are magnetically separated and the tailings are concentrated.
1972 Lebanon (Pa.) Daily News 30 Sept. f5/4 Metallurgical practice at the old Lebanon Concentrator was good, but by today's standards the plant was outdated.
2004 Financial Times 21 July 26/8 The commissioning of the mine and concentrator could begin in August 2005.
3. Shooting. A cylinder of metal or cardboard fitted inside a shotgun cartridge in order to keep the shot together for some distance after discharge. Now rare.
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society > armed hostility > military equipment > weapon > missile > ammunition for firearms > [noun] > cartridge > devices used in or with cartridge
concentrator1869
tige1877
1869 Sporting Gaz. 17 July 521/1 An invention of Mr Charles Lancaster's, called the ‘shot concentrator’.
1871 ‘Stonehenge’ Brit. Rural Sports (ed. 9) i. i. ii. 42/2 Mr. Lancaster..is now..prepared to supply the concentrators in any numbers.
1902 Badminton Mag. Jan. 1902 The shot does not leave the concentrator till within thirty-five yards of the range stated on the top wadding.
1922 P. A. Curtis Sporting Firearms of Today in Use ix. 164 The trouble with the concentrator, which is nothing but a simplified shrapnel shell, is that it will only break at a given distance.
This entry has been updated (OED Third Edition, September 2015; most recently modified version published online March 2022).
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n.1804