The Encyclopedia britannica; a dictionary of arts, sciences, and general literatureWith new maps, and original American articles by eminent writersWith American revisions and additions, bringing each volume up to date . eijuired. The tympan,over which calico or parchment is stretched, is double, and containswithin it e pad of paper or a piece of blanket, to moderate the forceof the impression of the platen. To it is hinged another metal jframe, the frisket, which is covered with paper, cut to correspondwith the shape of the type forme on the press. The ink is appliedwith a cylinder or roller,
The Encyclopedia britannica; a dictionary of arts, sciences, and general literatureWith new maps, and original American articles by eminent writersWith American revisions and additions, bringing each volume up to date . eijuired. The tympan,over which calico or parchment is stretched, is double, and containswithin it e pad of paper or a piece of blanket, to moderate the forceof the impression of the platen. To it is hinged another metal jframe, the frisket, which is covered with paper, cut to correspondwith the shape of the type forme on the press. The ink is appliedwith a cylinder or roller, which revolves in an iron frame, and is , PRACTICAL.] TYPOGRAPHY 705 covered abont an inch thick with a composition of glue and treacle«r t>f glycerin or otiier substance. The ink is spread out with apalette knife or similar appliauce ou a tableadjoiuiug the press, and by repeatedly re-volving the roller over it, it becomes coatedwith an extremely tliin film of roller is then moved over thesurface of the forme on the press,until sufficient ink has been trans-ferred to it. This is called rolluu;,and is a very important part of? press-work, for if inefficiently per-lormed there will betoo much ink on. Treadl. jiUteu press-
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Keywords: ., bookcentury1800, bookdecade1890, bookidencyclopedia, bookyear1892
