On the Economy of Machinery and Manufactures

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C. Knight, 1832 - 320 pages
 

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Page 135 - This great increase of the quantity of work which, in consequence of the division of labour, the same number of people are capable of performing, is owing to three different circumstances; first, to the increase of dexterity in every particular workman; secondly, to the saving of the time which is commonly lost in passing from one species of work to another ; and lastly, to the invention of a great number of machines which facilitate and abridge labour, and enable one man to do the work of many.
Page 131 - When the human hand or the human head has been for some time occupied in any kind of work, it cannot instantly change its employment with full effect The muscles of the limbs employed have acquired a flexibility during their exertion, and those to be put into action a stiffness during rest, which renders every change slow and unequal in the commencement.
Page 156 - As the possibility of performing arithmetical calculations by machinery may appear to non-mathematical readers to be rather too large a postulate, and as it is connected with the subject of the division of labour, I shall here endeavour, in a few lines, to give some slight perception of the manner in which this can be done, — and thus to remove a small portion of the veil which covers that apparent mystery.
Page 100 - ... is so uniform, and the profit upon it so small, that no grocer is at all anxious to sell it; whilst on the other hand, tea, of which it is exceedingly difficult to judge, and which can be adulterated by mixture so as to deceive the skill even of a practised eye, has a great variety of different prices, and is that article which every grocer is most anxious to sell to his customers.
Page 135 - That the master manufacturer, by dividing the work to be executed into different processes, each requiring different degrees of skill or of force, can purchase exactly that precise quantity of both which is necessary for each process...
Page 146 - The higher the skill required of the workman in any one process of a manufacture, and the smaller the time during which it is employed, so much the greater will be the advantage of separating that process from the rest, and devoting one person's attention entirely to it.
Page 173 - ... whether the porter or other servant so employed admit one person or twenty, his rest will be equally disturbed. It will also be necessary occasionally to adjust or repair the machine; and this can be done much better by a workman accustomed to machine-making, than by the person who uses it.
Page 198 - But I saw enough to convince me, that " he wanted a great many eyes ; and, as the article ap" peared quite in my own line of business, I said I would " take an order by way of experiment ; and he showed me " several specimens. I copied the order. He ordered " various quantities, and of various sizes and qualities. " On returning to the Tavistock hotel, I found that the " order amounted to upwards of 500?.
Page 225 - Lachez was repeated as before, and a new tree was launched in a similar manner. By these means a tree descended every five or six minutes, provided no accident happened to the slide, which sometimes took place, but which was instantly repaired when it did. In order to show the enormous force which the trees acquired from the great velocity of their descent, M.
Page 173 - Here then arises another circumstance which tends to enlarge the extent of a factory. It ought to consist of such a number of machines as shall occupy the whole time of one workman in keeping them in order: if extended beyond that number, the same principle of economy would point out the necessity of doubling or tripling the number of machines, in order to employ the whole time of two or three skilful workmen.

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