How to Understand the Reading of Blue Print Drawings; The Fundamental Principles Simply Explained

How to Understand the Reading of Blue Print Drawings; The Fundamental Principles Simply Explained

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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. 1919 edition. Excerpt: ...are: Center line cross sections Off center line cross sections Quarter cross sections Extended out cross sections Broken out cross sections Inserted cross sections Zig zag cross sections Rib cross sections Created line cross sections Assembly cross sections. Each of the above cross sections will be explained in the same order as here listed. CENTER LINE CROSS SECTION In Fig. 9I is a blue print drawing of a Wheel, the end elevation of which shows a center line cross section. This Wheel is shown by the use of the side and end elevations, which are all the elevations that are needed for a blue print drawing of the Wheel, because the addition of any other elevation or plan would add nothing to the meaning of the detail of the object to make it clearer, other than what the blue print drawing of Fig. 9I shows. The end elevation of the Wheel in Fig. 9I shows a cross section which was taken from the center line "A"---"B" of the side elevation. This end elevation cross section of Fig. 9I, like all cross sections of any blue print drawing, is always looked for on the center line of the elevation that is next to the end elevation that is cross sectioned. The center line "A"---"B" which passes thru the side elevation of Fig. 9I, and extends as the same center line "a"---"b" thru Fig. 90, is that which you see cross hatched in the end elevation of Fig. 9 l. The half of Fig. 90 that is cross hatched, is to be imagined as that seen in the center line of the side elevation of Fig. 9I, and given in detail in the end elevation. To make the last paragraph apply as an explanation of all center line cross sections of every detail of any blue print drawing, train your mind to imagine that what is seen...show more

Product details

  • Paperback | 30 pages
  • 189 x 246 x 2mm | 73g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236788702
  • 9781236788702