Power-Loom Weaving and Yarn Numbering, According to Various Systems, with Conversion Tables; An Auxiliary and Text-Book for Pupils of Weaving Schools,

Power-Loom Weaving and Yarn Numbering, According to Various Systems, with Conversion Tables; An Auxiliary and Text-Book for Pupils of Weaving Schools,

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Description

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. 1900 edition. Excerpt: ...coming within the reach of the intermediate lever, to enable the shafts to be moved again, first by the lower and then by the upper knife alternately. Here, as with the Hodgson dobby, the shed is never entirely closed, since the shafts which are to remain lifted during several picks are, at the same instant that they should be brought into the lower shed by the one knife, lifted by the other. Consequently this machine also belongs to the open-shed class and enjoys the consequent advantages of high speed and quiet working, combined with the preservation of the warp. To enable the shed to be adjusted (opened wider or contracted) the crank is slotted, the screw pin being moved towards the centre to reduce the aperture of the shed, or away from the centre to open same. After such adjustment has been made the draft screws on the knives must be loosened and the machine crank brought first to the one dead point (by turning the fly wheel) in order to adjust the one knife to within i of an inch of the hook noses as before; after which the other knife is fixed in the same way, the crank being first brought to the opposite dead point. If the draft screws are not first loosened danger is incurred, in the adjustment of a larger shed, of the knives pressing in the slots when the loom advances, whereby smashes are liable to ensue. Should the shafts be wrongly lifted, or left behind after the machine has been set in the prescribed manner, the cause is to be sought in the card pins not being properly adapted to the intermediate levers, a defect remediable by adjusting the cylinder a little. In the case of lags the pegs may have become worn or out of shape, or iron pins may have been set askew, thus causing the same defect. In concluding this description it may be...show more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236577388
  • 9781236577382