Letters Patent Volume 10

Letters Patent Volume 10

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1861 edition. Excerpt: ...that are speedily dulled and difficult to sharpen, and as the spurs divide the adjacent strands at the same time they are cut away from the core, it is obvious that the strands are separated by the action of multiplied wedges applied internally, whereby their brittle surfaces are torn or split apart with a serrated or ragged fracture. It has also been essayed to obtain the same end by subjecting the surface of the ratan to the action of gouge-shaped cutters, which Mayall's Improved Mode of Cutting Ratan into Strands. are placed to cut into the cane and sever the bottom and both sides of each strand at once. This plan also involves the use of cutters which are difficult to sharpen, and strain and tear the strands; and it is further objectionable, because it has been necessary to bend the cane so that the cutter might operate upon the convex side of the curvature to separate the strand without causing it to be bent. In both of these methods, and in any other that operates the cutters in a similar manner, the strands will be severed by splitting in advance of the cutting edge of the knife, and will therefore be liable to irregularities; and in addition, any knife cutting the strand in a direction corresponding with the surface, and also, and more especially, when from below towards the surface, will cause the brittle enamel of the cane to be severed with ragged or serrated edges. They therefore require to be unduly reduced in the dressing or finishing operation. This loss of labor and material can only be obviated by cutting into the surface with a knife that operates upon it, and that has the interior of the cane supporting the exterior when submitted to its action. The method constituting my invention consists in first dividing the surface...
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Product details

  • Paperback | 160 pages
  • 189 x 246 x 9mm | 299g
  • United States
  • English
  • black & white illustrations
  • 123676966X
  • 9781236769664