Ornamental Turning; A Work of Practical Instruction in the Above Art Volume 2

Ornamental Turning; A Work of Practical Instruction in the Above Art Volume 2

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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. 1904 edition. Excerpt: ...plate, which is screwed to fit the nose of the mandrel, and is the narrow one. The double chamfered steel bars are fixed to the front or broad plate. Two steel pallets are then fixed across the back of the chuck, being attached to the steel bars, and set-screws are provided to adjust them to their relative positions in reference to the movable ring upon which they operate. The sliding ring, which is cast in the solid with a metal frame, is attached to the face of the headstock by two steel centre-screws, the points fitting into corresponding centres in the headstock, and when fitting up the frame, it should be chucked by the centre hole and the ring turned inside and out; it is then rechucked by the periphery of the ring, and the back turned as far as the projecting bosses through which the centre-screws pass will allow; it must be then surfaced, and the holes tapped to receive the centre-screws. It is necessary that these holes should be in a parallel line with the face, and, to ensure this, the holes are tapped with a tap having a long plain pin turned to the size of the bottom of the thread, the plain part entering one hole, while the tap itself cuts the thread in the opposite one. The screws should be parallel and well fitted. To fix the frame in its position on the head, it must be temporarily placed on a metal plug on the mandrelnose by the centre hole, and set square across the face; by which process the centres are obtained, and when marked, the ring is removed, and the holes drilled and countersunk to correspond with the points of the screws. When countersinking the holes, they should be placed so that the screws, when tightened, will draw the frame firmly to the face of the head. When the metal plug is removed, it is very...
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Product details

  • Paperback | 34 pages
  • 189 x 246 x 2mm | 82g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 123677308X
  • 9781236773081