 Thirty years ago, the cost of labour for turning a surface of cast iron, by chipping and filing with the hand, was 12s. per square foot — the same work is now done by the planing machine at a cost for labour of less than one penny per square foot :...  Lectures in a Workshop - Сторінка 102автори: Thomas P. Pemberton - 1882 - 115 стор.Повний перегляд - Докладніше про цю книгу
 | William Newton - 1857 - 428 стор.
...hand, was 12*. per square foot : the same work is now done by the pinning machine at a cost for labour of less than \d. per square foot, and this, as you...chipping and filing by the hand, when the cost of labour was 12*. per foot, the capital required for tools for one workman was only a few shillings ;... | |
 | Causes - 1857 - 80 стор.
...12s. per square foot ; the same work is now done with the planing machinery at a cost of labour of Id. per square foot, and this, as you know, is one of...adapted to illustrate what our progress has been." It may admit of some question whether up to the period at which Adam Smith wrote, the great social... | |
 | Joseph Whitworth - 1858 - 234 стор.
...now done by the planing machine * See post, page 87, et seq. at a cost for labour of less than Id. per square foot, and this, as you know, is one of...necessary consequence, augmented; for, in the case T have mentioned of chipping and filing by the hand, when the cost of labour was 12s. per foot, the... | |
 | Frederick Collier Bakewell - 1859 - 334 стор.
...foot — the same work is now done by the planing machine at a cost for labour of less than one penny per square foot : and this, as you know, is one of...chipping and filing by the hand, when the cost of labour was 12s. per foot, the capital required for tools for one workman was only a few shillings ;... | |
 | Frederick Collier Bakewell - 1860 - 324 стор.
...foot — the same work is now done by the planing machine at a cost for labour of less than one penny per square foot : and this, as you know, is one of...chipping and filing by the hand, when the cost of labour was 12s. per foot, the capital required for tools for one workman was only a few shillings ;... | |
 | Joseph Whitworth - 1882 - 154 стор.
...square foot ; the same work is now done by the planing machine at a cost for labour of less than 1d. per square foot, and this, as you know, is one of...chipping and filing by the hand, when the cost of labour was I2S. per foot, the capital required for tools for one workman was only a few shillings ;... | |
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