screw-downadj.n.
/ˈskruːdaʊn/, U.S. /ˈskruˌdaʊn/ A. adj.
Of a valve, tap, cap, etc.: designed to close by being screwed or turned.
ΘΚΠ
the world > space > relative position > closed or shut condition > that which or one who closes or shuts > [adjective] > having a lid > specific
screw-capped1849
screw-down1849
screw-topped1858
capsuled1859
society > occupation and work > industry > working with tools or equipment > fastening > [adjective] > with screw > screwable
screwable1844
screw-down1849
screw-on1911
screw-in1912
1849 J. L. A. Simmons Let. 15 Oct. in Rep. Commissioners Railways 1849 (1850) 118 in Parl. Papers XXI. 1 The screw-down valve would not be effectual until the pressure had arrived to at least 150 lbs.
1862 Internat. Exhib.: Illustr. Catal. Industr. Dept. II. x. 54/2 Strong round-way screw-down bib and stop cocks.
1917 Sanitary Pottery Aug. 7/1 Faucets of the compressed or screw-down type should be advised.
1989 Jrnl. Assoc. Avian Veterinarians 3 108 The heavy-duty screw-down latches..avoid the use of snaps and spring closures.
2016 New Straits Times (Malaysia) (Nexis) 25 Jan. (Lab section) 7 The printer uses ink bottles designed with secure screw-down caps to prevent leaks.
B. n.
A device, esp. a tap, designed to be operated by being screwed or turned. In later use: spec. a mechanism forming part of a machine for rolling steel which enables the top roll to be raised or lowered during operation by rotation of the screws on which it is mounted.
ΘΚΠ
society > occupation and work > equipment > machine > parts of machines > other parts > [noun] > parts for reducing friction
bearing1734
friction-wheel1772
friction-roller1793
friction-ball1813
cylinder1819
screw-down1864
ball bearing1867
needle roller1935
society > occupation and work > equipment > machine > parts of machines > control(s) > [noun] > valve > others
washer1596
turncock1702
air cock1709
Jack-in-the-box1728
runner1754
stop-valve1829
three-way cock1838
ball valve1839
relief valve1846
poppet valve1851
plunger valve1854
pot-lid1856
reflux valve1857
screw-down1864
mica valve1880
tide flap1884
tube-valve1884
swing-tap1892
relay valve1894
Schrader1895
pilot valve1900
mixer valve1904
spool valve1908
spill valve1922
safety valving1930
three-way1939
1864 Trans. Royal Sc. Soc. Arts 6 298 The common ground tap; Kennedy's patent screw-down; and two specimens of loose valve screw-downs.
1873 Rep. Commissioners Water Supply XXXVIII. 253/1 Every draw-tap which is not a screwdown, will have to be altered.
1895 Iron Age 5 Sept. 489/2 The roll screw-downs, shears, shear table, &c., are operated by electric power.
1919 Internat. Marine Engin. July 479/2 This roll serves as a straightening roll, and accordingly it is provided with a separate screw-down.
1994 W. T. Hogan Steel in 21st Cent. v. 177 The stands are equipped with modern rolling technology, including hydraulic screwdowns.
This entry has been updated (OED Third Edition, June 2017; most recently modified version published online June 2022).
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adj.n.1849