A Practical Treatise on Animal and Vegetable Fats and Oils; Comprising Both Fixed and Volatile Oils as Well as the Manufacture of Artificial Butter and Lubricants, Etc., with Lists of American Patents Relating to the Extraction, Volume 1

A Practical Treatise on Animal and Vegetable Fats and Oils; Comprising Both Fixed and Volatile Oils as Well as the Manufacture of Artificial Butter and Lubricants, Etc., with Lists of American Patents Relating to the Extraction, Volume 1

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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. 1896 edition. Excerpt: ...the working resistance of the pumping machinery being thus approximately constant. A power of about 10.6 horse-powers is required. The pumps with a reservoir in common are provided with self-acting disengaging contrivances so arranged that the total resistance is as little variable as possible. The time of pressure is divided in four periods, all the eight pumps--of which there are four larger ones with a pistondiameter of 1.96 inches, and four smaller ones with a pistondiameter of 1.37 inches--being at first set to work. The maximum pressure amounts to 280 atmospheres, the pressure exerted during the first period being up to 46.6 atmospheres; during the second period up to 70.0 atmospheres; during the third period up to 140.0 atmospheres. The first period of pressure lasts 48 seconds, the second 46, the third 205, and the fourth 241; together 540 seconds = 9 minutes. One smaller and one larger pump have together one deliverypipe, the four delivery-pipes passing into a collecting box, Figs. 134 and 135. From the collecting box G eight delivery conduits lead to the eight vertical presses worked by this pump ing machinery. The collecting-box is provided with two safetyvalves K with the weights L. The self-acting disengaging contrivance of the pumps is arranged as shown in Figs. 136 and 137. Upon one end of the lever R, which rests in the reservoir F, and is suspended to the fulcrum 5 like the beam of a balance, presses the weight M; in about the center of the lever sits the suction valve P, while on the other side the lever is further suspended to a closely-fitting piston O. PUMPING MACHINERY WITH 8 PUMPS. GROUND-PLAN. A. beam; B, beam-bearing; C, columns; D, to Dv the four larger pumps; Ji, to Et, the four smaller pumps; F, reservoir; C, ..show more

Product details

  • Paperback | 146 pages
  • 189 x 246 x 8mm | 272g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236606736
  • 9781236606730