side valven.
/ˈsʌɪd valv/, U.S. /ˈsaɪd ˌvælv/ 1. A valve situated at one side of a cylinder or other part, esp. in a steam engine.
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1797 Jrnl. Nat. Philos. Apr. 29 Within this cistern [of a hydraulic press] is fixed a small forcing pump, of which K is the barrel, L the piston, M a side valve formed of metal.
1804 Repertory of Arts 2nd Ser. 5 408 The condensed water..passes out through the valve in the piston and the side valve.
1859 W. J. M. Rankine Man. Steam Engine 492 The angle at which the eccentric radius stands..in order to make the middle position of the side valve occur at the same instant with the end of the piston stroke.
1882 Trans. N.Y. Acad. Sci. 1 142 The side of the lamp contained a valve opening inwards... The plug is placed in the tube. If it is too tight, it will not be ejected by the explosion, and the flame will force itself out at the side valve.
2004 R. Miller et al. Audel Pumps & Hydraulics (ed. 6) i. 3 The downward stroke of the force pump forces water out through a side valve.
2. In an internal combustion engine: a valve mounted on the same side of the cylinder block as the pistons (rather than being in the cylinder head); frequently attributive.Contrasted with overhead valve n. at overhead adv., n., and adj. Compounds.
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society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > parts of > valves
side valve1886
cutout1905
sleeve-valve1910
overhead valve1921
1886 D. Clerk Gas Engine 249 Experiments were made to discover if the side valve would fire the mixture at the piston; it was found that it did so.
1928 Daily Mail Year Bk. p. lxiv 3·49 H.P. side valve ‘sports’ model.
1955 Pop. Sci. Jan. 159/1 All have side-valve engines with low compression ratios.
1973 J. Leasor Host of Extras ix. 179 My heart was pounding like an old side-valve engine on a long hill.
1992 M. J. Nunney Light & Heavy Vehicle Technol. (ed. 2) i. 45/2 Engines with this particular arrangement of side valves underwent considerable development.
2003 Tractor & Machinery Oct. 13/4 The production row-crop used mostly Ford components including the 10hp side-valve engine.
Derivatives
ˈside-valved adj. having a valve at one side; esp. (of an engine or vehicle) fitted with side valves.
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1881 U.S. Patent 247,401 1/2 The piston-valve is shown as being fastened in a closed position by the screw-stem.., the water passing out through the side valved pipe.
1932 Observer 9 Oct. 21/3 This [car] has a side-valved engine of about a litre and a half cubic capacity.
1966 S. Hignett Picture to hang on Wall vi. 127 He had his third Cadillac and his fourth Thunderbird, full of side-valved thunderbirds.
1995 C. G. Duran in A. C. Cernaianu & A. J. DelRossi Cardiac Surg.: Current Issues 4 ix. 99 Present day state of the art shows the need for a new right side valved conduit.
2006 L. J. K. Setright Long Lane with Turnings 61 The side-valved six-cylinder engine was not very powerful.
This entry has been updated (OED Third Edition, March 2016; most recently modified version published online March 2022).
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