Annual of Scientific Discovery: Or, Year-book of Facts in Science and ArtGould and Lincoln, 1850 |
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Página 13
... weight of each lineal foot of the 12 cables , which are composed of 6,600 strands , is 330 pounds , making , with the weight of the timbers , bolts , & c . , a total of 920 pounds per lineal foot , or 634 tons as the permanent weight of ...
... weight of each lineal foot of the 12 cables , which are composed of 6,600 strands , is 330 pounds , making , with the weight of the timbers , bolts , & c . , a total of 920 pounds per lineal foot , or 634 tons as the permanent weight of ...
Página 14
... weight that can come upon the bridge . The general arrange- ment of the truss is that of the well - known Howe Bridge . The arch is constructed of a centre rib of cast iron , 7 inches deep , with upper and lower horizontal flanches , 5 ...
... weight that can come upon the bridge . The general arrange- ment of the truss is that of the well - known Howe Bridge . The arch is constructed of a centre rib of cast iron , 7 inches deep , with upper and lower horizontal flanches , 5 ...
Página 16
... weight , have been thus ac- curately flattened , they are , one after another , according to their di- mensions , carried by two or more men towards one of several im- mense cast - iron levers , which , under the influence of steam ...
... weight , have been thus ac- curately flattened , they are , one after another , according to their di- mensions , carried by two or more men towards one of several im- mense cast - iron levers , which , under the influence of steam ...
Página 17
... weight to about 900 tons ! The mode in which these legions of rivets have been constructed is briefly as follows . At the western end of the company's principal forging establishment there stands a furnace or trough , full of pieces of ...
... weight to about 900 tons ! The mode in which these legions of rivets have been constructed is briefly as follows . At the western end of the company's principal forging establishment there stands a furnace or trough , full of pieces of ...
Página 18
... just described , the upper stratum of plates is loosely laid down , and , being thus by the superincumbent weight of the iron covering securely adjusted , their final connection is effected as 18 ANNUAL OF SCIENTIFIC DISCOVERY .
... just described , the upper stratum of plates is loosely laid down , and , being thus by the superincumbent weight of the iron covering securely adjusted , their final connection is effected as 18 ANNUAL OF SCIENTIFIC DISCOVERY .
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Página 355 - Mayne, like a shewer from the South to the North, and from the North to the West, and then downe to the South againe.
Página 237 - We found the pillar to be of solid salt, capped with carbonate of lime, cylindrical in front and pyramidal behind. The upper or rounded part is about forty feet high, resting on a kind of oval pedestal, from forty to sixty feet above the level of the sea. It slightly decreases in size upwards, crumbles at the top, and is one entire mass of crystallization.
Página 5 - WASHINGTON STREET, BOSTON, ANNUAL OF SCIENTIFIC DISCOVERY ; or, Year Book of Facts in Science and Art, exhibiting the most important Discoveries and Improvements in Mechanics, Useful Arts, Natural Philosophy, Chemistry, Astronomy, Meteorology, Zoology, Botany, Mineralogy, Geology, Geography, Antiquities, etc.
Página 147 - Sometimes it will be more convenient to arrange the two charts in symmetrical positions, one to the left and the other to the right of the subject's median plane, and with a slight inclination toward this plane.