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 . e blades L. one on eaciiside ; two pressure-rollers h, suspended from adjustible bars K,serve to hold up the edges of the strip until it is acted on bythe blades L, which fold the edges over, the folding processbeing completed by a second pair of blades i>, attached to ad-justable arms O. It next passes between the rollers Q Qgeared together at one end, the u
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 . e blades L. one on eaciiside ; two pressure-rollers h, suspended from adjustible bars K,serve to hold up the edges of the strip until it is acted on bythe blades L, which fold the edges over, the folding processbeing completed by a second pair of blades i>, attached to ad-justable arms O. It next passes between the rollers Q Qgeared together at one end, the upper one of which has a seriesof grooves r r corresponding to projections u u on the lower,which form creases in the tube, while at the same time incis-ions are made by the cutters / / at ejich side ; the pasted edgesare thus attached aud the bottom shaped. The tube nextpasses over a loop or guide Vattached to pivoted arms by whichthe tension is regulated as it is presented to the action of thecutters R R: one of these (R) is stationary and the other (R)attached to a plate 5, vibrated by means of a rock-shaft; be-tween the two the tube is cut at the proper points into lengthssuitable to form the bag. See also Paper-bag ArketVs Pnper-Tuhe Marhmt. PAPER-TWINE. 1628 PAPIER-MACHlfe. Paper-twrine. A kind of wrapping-twine jne-paivd by twisting a long, continuous strip of paper. In De Guillens jiapcr-twine niacliine, tliu strip iswound around a central spindle in a shallow circular Fig. 3542.
Size: 2477px × 1009px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectin, booksubjectmechanicalengineering
