单词 | bott |
释义 | bottn.ΘΚΠ the world > textiles and clothing > textiles > textile manufacture > manufacture textile fabric or that which consists of > manufacture of textile fabric > [noun] > lacemaking > pillow cushion1574 pillow1726 lace pillow1786 bott1793 1793 Encycl. Brit. III. 474/1 Bott, among bone-lace weavers, a kind of round cushion of light matter placed on the knee, whereon they work or weave their lace with bobbins, &c. 1847 J. Craig New Universal Dict. Bott, the name given by lacemakers to the round cushion placed on the knee, on which the lace is woven. 2. Founding. A conical plug of refractory clay used to close a tap hole against the flow of molten iron. See also bod n.2Recorded earliest in bott stick n. at Compounds. ΘΚΠ society > occupation and work > equipment > furnace or kiln > furnace > parts of furnace > [noun] > openings for metal or crucible > plug to close tapping-hole bott1863 bod1877 1863 Pract. Mechanic's Jrnl. Mar. 310/1 The ordinary bott stick,..is commonly used for the like purpose in iron foundry cupolas. 1866 Pract. Mechanic's Jrnl. Jan. 292/1 Not all the efforts of two most skilful and daring furnace-men could stop the stream with bott after bott. 1983 O. Andrews Living Materials xiii. 294/2 (caption) Iron flows from the pouring spout when the ‘bott’ or refractory plug is removed. Compounds bott stick n. Founding a rod with an expanded end to which a detachable conical plug of refractory clay is affixed, used for closing a tap hole in a foundry; see sense 2. ΚΠ 1863Bott stick [see sense 2]. 1900 J. Sharp Mod. Foundry Pract. 144 A round ball of this [loam] is placed on a disc of iron at the end of an iron rod, and is forced into the tap-hole..when it is wished to stop a tapping out with the bott or bod stick. 1986 Foseco Foundryman's Handbk. (ed. 9) 61 The bott stick should have a convex surface as shown. This is found to provide a more secure adhesion of the clay bott than a flat metal face. Derivatives ˈbotting n. Founding the process of plugging a tap-hole with a bott (sense 2). ΘΚΠ society > occupation and work > industry > working with tools or equipment > [noun] > furnace > other processes reverberationa1475 hot blast1836 botting1874 hanging1878 clinkering1901 1874 E. H. Knight Amer. Mech. Dict. I. 343/1 Botting (Metallurgy), restopping the tapping-hole of a furnace after a part of its charge has been allowed to flow therefrom. 1916 Yearbk. Amer. Iron & Steel Inst. 1915 43 The old method.., which required a man to stand directly in front of the notch to do the botting, is eliminated. 2008 M. Stein When Technol. Fails (rev. ed.) xii. 379/2 There are many different recipes for botting. This entry has been updated (OED Third Edition, June 2016; most recently modified version published online December 2021). < n.1793 |
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