DUPLEX a.
Duplex escapement, a peculiar kind of watch escapement, in which the scape-wheel has two sets of teeth. See Escapement. -- Duplex lathe, one for turning off, screwing, and surfacing, by means of two cutting tools, on opposite sides of the piece operated upon. -- Duplex pumping engine, a steam pump in which two steam…
DUTCH a.
in distemper, and for paper staining. etc. Weale. -- Dutch rush (Bot.), a species of horsetail rush or Equisetum (E. hyemale) having a rough, siliceous surface, and used for scouring and polishing; -- called also scouring rush, and shave grass. See Equisetum. -- Dutch tile, a glazed and painted ornamental tile, form…