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James Nasmyth citations

James Nasmyth est un mécanicien et astronome écossais, né à Édimbourg le 19 août 1808 et mort à Londres le 7 mai 1890.

Fils du peintre Alexander Nasmyth, il montra de bonne heure de grandes aptitudes pour les mathématiques et la mécanique, travailla de 1829 à 1831 chez le constructeur Henry Maudslay, puis fonda à Particroft, près de Manchester, un important établissement qui prospéra rapidement sous le nom de fonderie Bridgewater et qu'il pourvut d'un outillage perfectionné.

Parmi ses nombreuses inventions, il faut surtout citer le marteau-pilon, dont il paraît avoir eu l'idée en même temps que le Français François Bourdon. On lui doit également une cuiller de sûreté pour les fondeurs, un ventilateur pour les mines, un laminoir, une machine marine, etc.

Il s'était retiré en 1837 à Penshurst , s'occupant avec passion d'astronomie et prenant, avec des appareils de sa construction, des photographies du Soleil et de la Lune, qui comptaient parmi les plus remarquables qu'on ait encore obtenues. Il a également inventé le télescope Nasmyth, une variante du Cassegrain. Wikipedia  

✵ 19. août 1808 – 7. mai 1890
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James Nasmyth: 9   citations 0   J'aime

James Nasmyth: Citations en anglais

“Our history begins before we are born. We represent the hereditary influences of our race, and our ancestors virtually live in us.”

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James Nasmyth

Source: James Nasmyth engineer, 1883, p. 1
Contexte: Our history begins before we are born. We represent the hereditary influences of our race, and our ancestors virtually live in us. The sentiment of ancestry seems to be inherent in human nature, especially in the more civilised races. At all events, we cannot help having a due regard for the history of our forefathers. Our curiosity is stimulated by their immediate or indirect influence upon ourselves. It may be a generous enthusiasm, or, as some might say, a harmless vanity, to take pride in the honour of their name. The gifts of nature, however, are more valuable than those of fortune; and no line of ancestry, however honourable, can absolve us from the duty of diligent application and perseverance, or from the practice of the virtues of self-control and self-help.

“Everything connected with war and warlike exploits is interesting to a boy.”

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James Nasmyth

Source: James Nasmyth engineer, 1883, p. 52 (in 2010 edition)

“Among the many things that I showed Sir John while at Hammerfield, was a piece of white calico on which I had got printed one million spots. This was for the purpose of exhibiting one million in visible form. In astronomical subjects a million is a sort of unit, and it occurred to me to show what a million really is. Sir John was delighted and astonished at the sight. He went carefully over the outstretched piece with his rule, measured its length and breadth, and verified its correctness.”

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James Nasmyth

Source: James Nasmyth engineer, 1883, p. 389; Cited in: Humphrey Jennings, ‎Mary-Lou Jennings, ‎Charles Madge (1985). Pandaemonium, 1660-1886: The Coming of the Machine as Seen by Contemporary Observers, 1660-1886. p. 302

“In all well-conducted concerns the law of "selection of the fittest" sooner or later comes into happy action, when a loyal and attached set of men work together harmoniously for their own advantage as well as for that of their employers.”

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James Nasmyth

Source: James Nasmyth engineer, 1883, p. 218 (p. 181 in 2010 edition)

“Time passed by. I had furnished steam hammers to the principal foundries in England. I had sent them abroad, even to Russia. At length it became known to the Lords of the Admiralty that a new power in forging had been introduced.”

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James Nasmyth

Source: James Nasmyth engineer, 1883, p. 87 (p. 221 in 2010 edition)

“We may fill our purses, but we pay a heavy price for it in the loss of picturesqueness and beauty.”

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James Nasmyth

Source: James Nasmyth engineer, 1883, p. 153 (in 2010 edition)

“The arrangement we greatly preferred was to employ intelligent, well-conducted young lads, the sons of labourers or mechanics, and advance them by degrees according to their merits.”

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James Nasmyth

Source: James Nasmyth engineer, 1883, P. 227

“The characteristic feature of our modern mechanical improvements, is the introduction of self-acting tool machinery. What every mechanical workman has now to do, and what every boy can do, is not to work himself, but to superintend the beautiful labor of the machine. The whole class of workmen that depend exclusively on their skill is now done away with. Formerly I employed four boys to every mechanic. Thanks to these new mechanical combinations, I have reduced the number of grown-up men from 1.500 to 750. The result was a considerable increase in my profits.”

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James Nasmyth

James Nasmyth in: 10th Report of Commissioners on Organisation and Rules of Trades Unions, 1868; Cited in: Robert Maynard Hutchins (1952), Great Books of the Western World: Marx. Engels. p. 214

“My first essay at making a steam engine was when I was fifteen. I then made a real working; steam-engine, 1 3/4 diameter cylinder, and 8 in. stroke, which not only could act, but really did some useful work; for I made it grind the oil colours which my father required for his painting. Steam engine models, now so common, were exceedingly scarce in those days, and very difficult to be had; and as the demand for them arose, I found it both delightful and profitable to make them; as well as sectional models of steam engines, which I introduced for the purpose of exhibiting the movements of all the parts, both exterior and interior. With the results of the sale of such models I was enabled to pay the price of tickets of admission to the lectures on natural philosophy and chemistry delivered in the University of Edinburgh. About the same time (1826) I was so happy as to be employed by Professor Leslie in making models and portions of apparatus required by him for his lectures and philosophical investigations, and I had also the inestimable good fortune to secure his friendship. His admirably clear manner of communicating a knowledge of the fundamental principles of mechanical science rendered my intercourse with him of the utmost importance to myself. A hearty, cheerful, earnest desire to toil in his service, caused him to take pleasure in instructing me by occasional explanations of what might otherwise have remained obscure.”

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James Nasmyth

James Nasmyth in: Industrial Biography: Iron-workers and Tool-makers https://books.google.nl/books?id=ZMJLAAAAMAAJ, Ticknor and Fields, 1864. p. 337