A Treatise on Toothed Gearing; Containing Complete Instructions for Designing, Drawing, and Constructing Spur Wheels, Bevel Wheels, Lantern Gear, Screw Gear, Worms, Etc., and the Proper Formation of Tooth-Profiles. for the Use of

A Treatise on Toothed Gearing; Containing Complete Instructions for Designing, Drawing, and Constructing Spur Wheels, Bevel Wheels, Lantern Gear, Screw Gear, Worms, Etc., and the Proper Formation of Tooth-Profiles. for the Use of

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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. 1883 edition. Excerpt: ...the ratio y is commonly taken equal to; that is, the face width equals twice the circumferential pitch. Formulas (12), (14), and (16), which have been obtained from formulas (11), (13), and (15) by substituting for-the value, are therefore much the more often used. The following tables, obtained from formulas (12), (14), and (16), will be found convenient: --Example I.--Required the pitch of a cast-iron bevel wheel which will transmit a force of 10,000 pounds, moderate shock. In Table I., column for moderate shock, line 17, we find i = 10,000 pounds. In the pitch column, and directly opposite this value of P, we find the required pitch, / = 5." Hence /= 2/ = 10," etc. Example 2.--The force transmitted by a cast-iron gear under violent shock is 6,000 pounds. Required the necessary pitch. Table I., column for violent shock, line 14, gives P = 5,971 pounds; and the corresponding pitch is / = 4J." Since this pitch corresponds to a value of P slightly less than the required one, we may take for our required pitch / = 4 ." Example 3.--The pitch of a cast-iron gear subjected to little or no shock is 2." Required the force in pounds which can be safely transmitted by the gear. In Table I., pitch column, line 6, we find/ = 2." The value of P for little or no shock, corresponding to this pitch, is 4,133 pounds. Example 4.--Required the pitch for a cast-iron gear which will safely transmit 24-horse power, violent shock, at a circumferential velocity of 8 feet per second. In this case--=---=3. In Table II., column v 8 IT for violent shock, line 6, we find--= 3.04; and the v corresponding pitch (found opposite this value of--v in the pitch column) is / = 2." Example 5.--A certain cast-iron gear transmits 75 horse...show more

Product details

  • Paperback | 40 pages
  • 189 x 246 x 2mm | 91g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236620771
  • 9781236620774