 | George Richardson Porter - 1843 - Страниц: 510
...proportion to the burden of the ship varies, of course, with the size. A sea-going iron steam-vessel will take from nine to twelve cwts. of iron per ton...mechanical skill will secure to us a virtual monopoly. The average price of pig-iron of the same quality in. Glasgow, in each year from 1835 to the present... | |
 | George Richardson Porter - 1843 - Страниц: 500
...proportion to the burden of the ship varies, of course, with the size. A sea-going iron steam-vessel will take from nine to twelve cwts. of iron per ton...degree of strength, of course take a less weight of metul. The building of iron ships is fast becoming an important branch of national industry ; it is... | |
 | George Richardson Porter - 1851 - Страниц: 920
...proportion to the burden of the sliip varies, of course, with the size. A sea-going iron steam-vessel will take from nine to twelve cwts. of iron per ton...require an equal degree of strength, of course take ' weight of metal. '•nilding of iron ships is fa.«t becoming an important branch of national industry... | |
 | William Stanley Jevons - 1865 - Страниц: 388
...hull, engines, masts, rigging, anchors. Of this product of our industry, Mr. Porter remarked, that " it is one in which our mineral riches and our great...mechanical skill will secure to us a virtual monopoly." And any one who considers the present progress of iron-ship building in this country must see that,... | |
 | William Stanley Jevons - 1866 - Страниц: 464
...engines, masts, rigging, anchors. Of this product of our industry, Mr. Porter remarked, that " it was one in which our mineral riches and our great mechanical skill will secure to us a virtual monopoly." And any one who considers the present progress of iron ship-building in this country must see that... | |
 | John Mackinnon Robertson - 1908 - Страниц: 352
...Considered, 6th ed. pp. 87-89 ; and see above, ch. vp 59. 1 Porter (p. 577) spoke of the industry in 1850 as "one in which our mineral riches and our great mechanical skill will secure to us a virtual monopoly " ; but American inventiveness was already famous, and American mineral resources are immensely greater... | |
 | George Richardson Porter, Francis Wrigley Hirst - 1912 - Страниц: 912
...varies, of course, with the size. A sea-going iron steam-vessel will take from nine to twelve cwt. of iron per ton register. Boats intended for river...mechanical skill will secure to us a virtual monopoly." ' 1850-1909 The rapid growth of our shipbuilding trades since 1850 was one of the most striking features... | |
 | Melvin Moses Knight, Harry Elmer Barnes, Felix Flügel - 1928 - Страниц: 848
...occurred changes of fundamental importance in shipbuilding. GR Porter was able to write as early as 1845 : "The building of iron ships is fast becoming an important...mechanical skill will secure to us a virtual monopoly. ' ' 1 The history of shipbuilding fully justified this prediction. In the total tonnage constructed... | |
 | Melvin Moses Knight, Harry Elmer Barnes, Felix Flügel - 1928 - Страниц: 876
...changes of fundamental importance in shipbuilding. GR Porter was able to write as early as 1845 : ' ' The building of iron ships is fast becoming an important...mechanical skill will secure to us a virtual monopoly. ' ' l The history of shipbuilding fully justified this prediction. In the total tonnage constructed... | |
 | 1843 - Страниц: 522
...propoition to the burden of the ship varies, of course, with the size. A sea-going iron steam-vessel will take from nine to twelve cwts. of iron per ton...industry ; it is one in which our mineral riches and onr great mechanical skill will secure to us а virtual monopoly. — Purlers Progrea of the Nation,... | |
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The weight of metal used in proportion to the burden of the ship varies, of course, with the size. A sea-going iron steam-vessel will take from nine to twelve cwts. of iron per ton register. Boats intended for river traffic, which do not require an equal... 