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Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

Forfatter: Guilford L. Molesworth

Sider: 744

UDK: 600 (093)

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Side af 764 Forrige Næste
413 OF ENGINEERING FORMULÆ, Pedestals, or Plummer-blocks. Diameter of neck .. Thickness of cover,. .. Thickness of sole-plate .. Diameter of bolts .. .. Ditto ................ = B. = D X-4. = D x ‘3. — D x ‘25, if 2 bolts. = D x'18, if 4 bolts. Steps, or Brasses of Plummeb-blocks. D — Diameter of bearing in inches. T — Thickness of metal at bottom in inches. t = Thickness of metal at sides. T = Dx 0-12+ 0-15. t = 0-75 T, or f T. Note.— The results of this formula agree very closely with the London practice. In the North lighter brasses are used, and the formula T = D x - 09 + ‘15 would agree more nearly with the Northern practice. Adjustable Bearings for Shafting. (J. Richards.) _— ■
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