Tariff Information, 1921; Hearings on General Tariff Revision Before the Committee on Ways and Means, House of Representatives Volume 5-7

Tariff Information, 1921; Hearings on General Tariff Revision Before the Committee on Ways and Means, House of Representatives Volume 5-7

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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. 1921 edition. Excerpt: ...on wire suitable for this purpose and cut tacts and small nails are now sold at higher prices than those of wire tacks and small nails Production in foreign countries: Owing to the fact that there are no statistics available, it is impossible for this committee to give a reliable estimate of these products in foreign countries. Description of manufacture: Cut tacks and small nails are made from open-hearth steel, copper, brass, and zinc sheets, varying in gauge from No. 10 to No. 21. and from widths of 13 to 26 inches and lengths of 36 inches. These sheets are chopped into strips varying in width according to the length of the tack or nail required, and these strips are then put into a holder or "nipper ' and then placed in the barrel or tube of the tack machine. The tube revolves one-half turn foi each tack or nail produced (the portion required for each tack or nail being cut on a bias) and is fed automatically until the entire Btrip has been cut into tacks or nails, except the small butt held in the nipper. One tack is made by each revolution of the machine, which varies in speed from 200 to 325 revolutions "per minute, according to the gauge and width of strip from which the tacks are made. Manufacture of wire tacks and small nails: Wire tacks are made from coiled open hearth steel, copper, or brass wire, as required, passing through the straigh tellers to the pointing toolsand cut off and headed. The speed of these machines varies from 3tH' to 500 revolutions per minute according to the gauge and length of the nail or tack, and a tack or nail is made during each revolution. There are no existing fundamental patents on these machines and practically the same type of machine is used in all countries where ordinary wire tacks or small...show more

Product details

  • Paperback | 940 pages
  • 189 x 246 x 47mm | 1,642g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236616340
  • 9781236616340