. Appleton's dictionary of machines, mechanics, engine-work, and engineering. epressed together at the base; but with these wedge-shaped column-rules, which are held down to thebed or turtle by tongues, projecting at intervals along their length, and sliding in rebated grooves cutcrosswise in the face of the bed, the space in the grooves, between the column-rules, being filled withsliding blocks of metal, accurately fitted, the outer surface level with the surface of the bed, the endsnext the column-rules being cut away underneath to receive a projection on the sides of the tongues,and screws
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. epressed together at the base; but with these wedge-shaped column-rules, which are held down to thebed or turtle by tongues, projecting at intervals along their length, and sliding in rebated grooves cutcrosswise in the face of the bed, the space in the grooves, between the column-rules, being filled withsliding blocks of metal, accurately fitted, the outer surface level with the surface of the bed, the endsnext the column-rules being cut away underneath to receive a projection on the sides of the tongues,and screws at the end and side of each page to lock them together, the types are as secure on this cyl-inder as they can be on the old flat bed. Fig. 3112 represents a press with four impression cylinders, capable-of printing 10,000 impressions perhour. Four persons are required to feed in the sheets, which are thrown out and laid in heaps by self-acting flyers, as in the ordinary cylinder presses. A press with eight impression cylinders will print16,000 or more impressions per Patent single large-cylinder printing-machine.—Tig. 8118. This machine is particularly adapted tobook and fine newspaper work It has a registering apparatus and sheet-flyer; also adjustable ironbearers, so that stereotype may bo worked with the same facility and beauty as typo forms. One DOJis required to lay on the sheets, and the press may bo driven l>v man or steam power. With the sameattendance, it will print, say from 1,000 to 2,000 impressions in an hour, according to the siie of the pressand the quality of the work desired. 522 PRINTING-PRESS. Single small-cylinder printing-machine.—Fig. 3114. In this press the form of types is placed upon aflat bed, and the impression taken upon the paper by means of a cylinder, while the form is passingunder it. The small size of the cylinder allows the machine to be constructed in a veiy compact man-ner, so as to shorten the distance which the bed travels, t
Size: 1685px × 1482px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
