(Intermediate, or Second Year)

(Intermediate, or Second Year)

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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. 1901 edition. Excerpt: ...yarn. Occasionally, also, this jumping out of the carriage has been the cause of breakages of the wheels concerned in rotating the back shaft. Q. What is the influence of the weather on the processes of spinning? A. It is the general experience that warm, moist weather is the very best for the processes of cotton spinning. It is not sufficient to have either heat without moisture or vice versa. Heat is necessary to keep the machinery in the best working condition, while it also softens the waxy portion of the fibres of cotton, and therefore keeps the fibres in a pliable condition. Moisture is necessary in order to prevent the fibres from becoming parched and dry, and to prevent the fibres from being susceptible to the influences of electricity. It is the author's experience that dry, hot summer days, dry, frosty days, and days on which east winds are prevalent are the worst of all for the various processes of cotton spinning. Black, foggy days are also very bad, because they tend to dirty the cotton. Q. Name the highest numbers that have been spun advantageously on the throstle and ring frames, and say why as high a rate of numbers cannot be spun on these frames as on the mule? A. (a) It is probable that a strong yarn of about 30's may be put down as the limit for the flyer throstle, owing to the strain of pulling the bobbin round devolving on the yarn. (b) On the ring frame a vast deal depends on the kind and quality of the rovings supplied to the ring frames. At the present time a large quantity of yarn from 70's to 80's is being spun from combed Egyptian and Sea Islands cotton, double roving. From good American cotton, double roving, carded, the safe limit may be put down at about 50's, and for single roving, say, 40's. Finer and more delicate...show more

Product details

  • Paperback | 52 pages
  • 189 x 246 x 3mm | 109g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236566319
  • 9781236566317