Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . GlaSK-^owins in Gobkt-Motd. the foot-mold. The body matrix L is held downupon the stem sections by a clamp. The portionshave separate handles. For buttles which containthe names of the contents and medicines, the inte-rior surface of tlie mold has intaglio engraving withthe inscription, medallion, and what not. Glass Mo-saics. Glass mosaics are constructe
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . GlaSK-^owins in Gobkt-Motd. the foot-mold. The body matrix L is held downupon the stem sections by a clamp. The portionshave separate handles. For buttles which containthe names of the contents and medicines, the inte-rior surface of tlie mold has intaglio engraving withthe inscription, medallion, and what not. Glass Mo-saics. Glass mosaics are constructedas follows : — In the first place, the materials of glass are mixedwith variouscoloriugmaterials. chiefly metallic oxides,so as to form opa<|Ue colored enamels ; these enamelsare cast into slabs or flat cakes, and tlie slabs are cutinto very small cubes or i-ectangular [lieces. Xotonly is every color imitated, but every gradation oftint in each color, insomuch that at tlic great mosaicestablishment at Kome, maintained by tlie Italian gov-ernment, they have no less than tliirti) thoiisand dif-ferent tints of colored enamels, all classified and reg-istered. With these little colored cubes a pictureis built up, copving some celebrated work of theI
Size: 1462px × 1710px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectin, booksubjectmechanicalengineering
