A Handbook of Engine and Boiler Trials and of the Indicator and Prony Brake; For Engineers and Technical Schools

A Handbook of Engine and Boiler Trials and of the Indicator and Prony Brake; For Engineers and Technical Schools

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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. 1890 edition. Excerpt: ...application, and that of Coffin, % designed especially for the measurement of indicator-diagrams, are also in common use, the two former mainly in Europe, the latter in the United States. They commonly operate by the combined sliding and rolling motion of a small measuring wheel which has a total rotation proportional to the.area enclosed by the figure the periphery of which it traverses. The integrating wheel, or roller, is best made of steel. A vernier on the instrument en "Ueber die Genauigkeit der Planimeter;" Professor Lorber; Oesterreiche Zeitschrift fUr Berg-und Hilttenwesen; vol. xxxi; p. 22. f Ueber das Roll Planimeter von Coradi; Franz Lorber, Zeitschrift des Oesterr. Ing. & Arch. Verein; vol. xxxvi; p. 135. Barrus on the Indicator, p. 61. Bramwell on the Amsler Planimeter. Report Brit. Association, 1872. p. 404. Shaw on Mechanical Integrators; Proc. Brit. Inst. C. E., 1884-5, No. 2063. ables the readings of the motion of the roller to be taken with great accuracy, and repeated measurements may be made to eliminate errors less in amount than the finest readings given. A very simple modification of the Amsler Planimeter, designed by Mr. J. W. See, is made especially for indicator work. The following are the maker's instructions, in detail, for using the most recent form of Amsler planimeter: I. Adjust the screw-centres upon which the index-roller D revolves, so that the roller works freely, and does not touch the vernier. The same care must also be taken with the centrepin C. Oil the screw-centres now and then. Care should be taken to prevent the tube B, the tracer F, and the point E from being bent, and also to see that the barrel D is kept uninjured. 2. To find the area of any figure, set the roller...show more

Product details

  • Paperback | 122 pages
  • 189 x 246 x 7mm | 231g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236855787
  • 9781236855787