. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. any mandrels are required as there are sizes and shapes of linki. 212 CABLE. The piece of iron intended to form a link Ijeing cut, is carried, while red-hot, to thebending machine, where it is seized with the jaw of tiie vice c, by one of its ends, theslant of the cut bein? turned upwards ; this piece of iron has now the horizontal directionm n; on pushing the lever g in the line of the arrow, the roller h will force m n to beapplied successively in the elliptic groove of the mandre
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. any mandrels are required as there are sizes and shapes of linki. 212 CABLE. The piece of iron intended to form a link Ijeing cut, is carried, while red-hot, to thebending machine, where it is seized with the jaw of tiie vice c, by one of its ends, theslant of the cut bein? turned upwards ; this piece of iron has now the horizontal directionm n; on pushing the lever g in the line of the arrow, the roller h will force m n to beapplied successively in the elliptic groove of the mandrel; thus finally the two faces thatare to be welded together will be placed right opposite each other. The length of the small diameter of the ellipse ought to exceed by a little the lengthof the stay-piece, to allow of this being readily introduced. The difference between thepoints F E, is equal to the difference of the radii vectons of the ellipse. Hence it will bealways easy to find the eccentricity of the ellipse. Fig. 227 is a lever press for squeezing the links upon their stays, after the links are 227. welded. This machine consists of a strong cast-iron piece a, in the form of a square, ofwhich one of the branches is laid horizontally, and fixed to a solid bed by means ofbolts; the other branch, composed of two cheeks, leaving between them a space of twoinches, stands upright. These two cheeks are united at top, and on the back of theirplane by a cross piece b. c, a rectangular staple, placed to the right and left of the cheeksthrough which is passed the mandrel r, which represents and keeps the place of the fol-lowing link. E, is a press lever, 6 feet long, f, clamp and counterclamp, between whichthe link is pressed at the moment when the stay is properly placed. There are otherclamps, as well as staples c, for changing with each changed dimension of links. The links bent, as we have seen, are carried to the forge hearth to be welded, and to re-ceive their stay ; two ope
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
