. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. and fixedto a wooden shaft. The paws are also made of wood: they serve to lay down alternately the plies of thecloth which passes upon the cage, and is folded zigzag upon the floor, or upon a boardset below the cage; a motion imparted by the seesaw motion of the cage itself. SeeStretcjiing Machine. To protect the fingers of the workmen, above the small plate of the spreading-boardor bar, there is another bar, which forms with the former an angle of about 75°; theycome suliiciently n
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. and fixedto a wooden shaft. The paws are also made of wood: they serve to lay down alternately the plies of thecloth which passes upon the cage, and is folded zigzag upon the floor, or upon a boardset below the cage; a motion imparted by the seesaw motion of the cage itself. SeeStretcjiing Machine. To protect the fingers of the workmen, above the small plate of the spreading-boardor bar, there is another bar, which forms with the former an angle of about 75°; theycome suliiciently neai together for the opening at the summit of the angle to allow thecloth to [lass through, but not the fingers. See Bulletin de la Sociele Industriille deMulkau^en, No. 18. I shall now describe, more minutely, the structure of the powerful but less complicatedcalender mechanisms employed in the British manufactories. A front elevation of a fonr-rollered calender (five rollers are often introduced) for gla-zing goods is given iajig. 228. d I are two pasteboard or paper cylinders, each 20 inches 228 T- 229. in diameter, whose structure will be presently described : / is a cast-iron cylinder turned])erfectly smooth (its fellow is often placed between e and d) : it is eight inches in diame-ter outsilc, four inches inside, with two inches thickness of metal, e is another paste-board cylinder, fourteen inches in diameter: the strong cast-iron frame contains the bush-es in which the journals of the rollers turn, op, is one of the pair of levers for commu-nicating a graduated pressure according to the quality of the eoods. Figs. 229, 230, are endviews of the same machine to show the working gear. The wheel s, on the end of theupper iron, cylinder, is ten inches in diameter; that on the end of the fellow iron cylinderbelow (when it is present) is thirteen inches; both are connected by the larger carrierwheel t. The lower wheel u is one third larger than the upper wheel, and thereforer
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
