. Memoirs of the American Academy of Arts and Sciences. Fig. 1. Fio. 2. then to be hammered by the steam hammer C, until its internal diameter is enlarged to about 27inches. The last part of the hammering is to be performed after the hoop has become of operating in this way with the steam hammer, we may produce the same effect uponthe hoop by a rolling-mill, in which the operating part of the rollers is made to project beyondthe housings, or frame. After the hooj) has been condensed ahd enlarged in this way, it is next to be placed upon anannular anvil, D, D (Figures 3 and 4), and
. Memoirs of the American Academy of Arts and Sciences. Fig. 1. Fio. 2. then to be hammered by the steam hammer C, until its internal diameter is enlarged to about 27inches. The last part of the hammering is to be performed after the hoop has become of operating in this way with the steam hammer, we may produce the same effect uponthe hoop by a rolling-mill, in which the operating part of the rollers is made to project beyondthe housings, or frame. After the hooj) has been condensed ahd enlarged in this way, it is next to be placed upon anannular anvil, D, D (Figures 3 and 4), and the segmental swages or blocks, E, E, are to beadjusted within it. These segments form a cylinder u)ion tlieir outer surface, but inside theyform a hollow cone. A solid conical plug, F, is fitted to bo diivcn into this hollow cone withinthe swages. With this arrangement, the whole being under the drop or steam hammer C, theplug is driven by repeated blows into the hollow cone, by which operation the hoop is stretchedsufficiently to destroy all confli
Size: 1221px × 2046px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookidmemoirsofamerica1888amer, booksubjectscience, bookyear1783
