Kinematics of Machinery; A Text-Book on Mechanisms and Their Properties, with Many Practical Applications for Engineers and for Students in Technical Schools

Kinematics of Machinery; A Text-Book on Mechanisms and Their Properties, with Many Practical Applications for Engineers and for Students in Technical Schools

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...of Three Centers. Hence we plan the order of determination of the centers of the hexagon 123456 as follows: where 1234i indicates that the missing centers 14, 23, of the quadric 1234 are to be found first, TQ 23562 indicates that the missing centers 25, 36, of the temporary quadric TQ) 2356 are to be found next, and the rectangle surrounding both these steps and marked with the subscript 3 indicates that all remaining unknown centers may now be found at once by the Theorem of Three Centers. Hereafter, however, when this constrained hexagon occurs we will for simplicity's sake, write it thus: 11234561, which will nevertheless be understood to mean that precisely the same steps are to be followed as indicated more fully in the discussion just given. On account of our familiarity with this particular chain the gain in simplicity (compactness) in thus recording the steps to be followed is considered ample justification for this latter method. The planning of the determination of the unknown centers in Fig. 65 (generalized skeleton of Angstrom's Valve Gear) would be expressed as follows: The first method of representation is preferred because of its simplicity (as explained above), and means that the missing centers of the quadric 1456 are first to be found, then the remaining missing centers of the hexagon 123456 (precisely as explained above), then the missing centers of the temporary quadric 1378, and finally all centers still missing by a simple application of the Theorem of Three Centers. The second method of representation means exactly the same order and method of procedure but is expressed in more detail. Referring to Fig. 66 (generalized skeleton of Bilgram's Valve Gear), the procedure for the determination of the missing centers would be...show more

Product details

  • Paperback | 80 pages
  • 189 x 246 x 4mm | 159g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236518810
  • 9781236518811