. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. is consider-ed by the patentee to possess considerableadvantage, particularly in point of stability,over the ordinary construction of ancliors,and is economical, inasmuch as a less weightof metal wiU give, upon this plan, an equaldegree of strength. An ingenious form of anchor was madethe subject of a patent, by Lieutenant Rodg-ers, of the Royal Navy, in 1828, and wasafterwards modified by him in a second pa-tent, obtained in August, 1829. The wholeof the parts of the anchor are to
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. is consider-ed by the patentee to possess considerableadvantage, particularly in point of stability,over the ordinary construction of ancliors,and is economical, inasmuch as a less weightof metal wiU give, upon this plan, an equaldegree of strength. An ingenious form of anchor was madethe subject of a patent, by Lieutenant Rodg-ers, of the Royal Navy, in 1828, and wasafterwards modified by him in a second pa-tent, obtained in August, 1829. The wholeof the parts of the anchor are to be boundtogether by means of iron bands or hoops,in place of bolts or pins. Fig. 13 is a side view of a ccanplete anchor, formed upon his last improved construction, and fig. 14, a plan of the same; fig. 15, an end view of the crown and flukes, or arms; fig. 16 represents the two principal iron plates, a, a, of which the shank is constructed, but so as to form parts of the stump arms to which the flukes are to be connected. The crown piece is to be welded to the stump piece, c, c, fig. 16, as well as to Jie. ANNEALING. 53 end I of the centre piece h h, and the scarfs m m are to be cut to receive the arms orflukes. Previously, however, to uniting the arms or flukes with the stump arms, thecrown and throat of the anchor are to be strengthened, by the application of the crownslabs n n,fig. 16, which are to be welded upon each side of the crown, overlapping theend of the pillar h, and the throat or knees of the stump arms and the crown piece. Thestump arms are then to be strengthened in a similar manner, by the thin flat pieces p p,which are to be welded upon each side. The palms are united to the flukes in theusual way, and the flukes are also united to the stump arms by means of the long scarfsm m. When the shank of the anchor has been thus formed, and united with the flukes,the anchor smiths work may be said to be complete. Another of the improvements in the construction of anch
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
