Reports of Patent, Design, and Trade Mark Cases Volume 9

Reports of Patent, Design, and Trade Mark Cases Volume 9

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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. 1892 edition. Excerpt: ...and then the weight of the holder presses the gas down again into the mains. Gas holders have been in existence 70 or 80 years. As a rule there are a series of columns fixed at even distances round gas holders, 40 or to a large gas holder. Generally there is a bracing going round the top and forming a complete curb, and there are weights in between to control the pressure of the gas and to check the tendency of the gas holder to fall. There were also wheels against the side of gas holders running in grooves or against bearings on posts, which wheels restrained the gas holder. The object of this was to prevent the gas holder, which was open at the bottom like an inverted bell and sunk into a pit filled with water to prevent the gas escaping, from wobbling. There was a tendency in the gas holder to wobble, owing to the fact that it was in a fluid, and owing to wind pressure hitting it on one side and rocking it over. This, however, involves diflferent considerations from keeping stable and steady a vessel like a pontoon which is the right way up. As to the anticipations, without going into them it may be stated that Malam's invention was as near to the Plaintiffs' invention as anything. He had posts and weights, and he sent oit from the middle of the top of the gas holder gearing which geared into bevelled wheels at the other end, these wheels being connected with other bevelled wheels running between the posts: it resulted that any torsional strain or tendency to rock was controlled by toothed wheels connected with the middle and with the sides of the posts. Therefore, in i823, there was e mechanical _device to prevent tipping over. Between 1823-and 1887 there were a number of other inventions, but all had posts for the purpose...show more

Product details

  • Paperback | 396 pages
  • 189 x 246 x 21mm | 703g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236813502
  • 9781236813503