Memorials of the Lineage, Early Life, Education, and Development of the Genius of James Watt

Portada
Biography and memorials of James Watt (1736-1819), the Scottish mathematician and mechanician who invented the steam engine, together with some family history.

Dentro del libro

Otras ediciones - Ver todas

Términos y frases comunes

Pasajes populares

Página 224 - Saturdays, about mid-day, or at such hour thereafter as may answer from the state of the tide, and to leave Greenock on Mondays, Wednesdays, and Fridays, in the morning, to suit the tide. " The elegance, comfort, safety, and speed of this Vessel require only to...
Página 219 - The expense of a patent in France is 300 livres for three years, 800 ditto for ten years, and 1500 ditto for fifteen years. There can be no difficulty in obtaining a patent for the mode of propelling a boat which you have shown me ; but if the author of the model wishes to be assured of the merits of his invention before he goes to the expense of a patent, I advise him to make a model of a boat in which he can place a clock spring, which will give about eight revolutions.
Página 224 - COMET will receive information of the hours of sailing, by applying at Mr. Houston's Office, Broomielaw ; or Mr. Thomas Blackney's, East Quay Head, Greenock. HENRY BELL.
Página 219 - ... which a boat moves is in proportion as the sum of the surfaces of the oars, paddles, leaves or other machine is to the bow of the boat presented to the water, and in proportion to the power with which such machinery is put in motion ; hence if the sum of the surfaces of the oars is equal to the sum of the surfaces of the leaves and they pass through similar curves in the same time, the effect must be the same but oars have...
Página 212 - ... have also reason to believe that the power of the STEAM ENGINE may be applied to work the wheels, so as to give them a quicker motion, and consequently to increase that of the ship.
Página 224 - Greenock, to sail by the power of wind, air, and steam, he intends that the vessel shall leave the Broomielaw on Tuesdays, Thursdays, and Saturdays, about mid-day, or at such hour thereafter as may answer from the state of the tide ; and to leave Greenock on Mondays, Wednesdays, and Fridays, in the morning, to suit the tide. " The elegance, comfort, safety, and speed of this vessel require only to be proved to meet the approbation of the public ; and the proprietor is determined to do every thing...
Página 122 - Loquh Fyn, (which is a small neck of sandy land, over which they usually drawe theyr small boates into the Firth of Dunbarton,) and soe passe up in the Cluyde with pladding, dry hides, goate, kid, and deere skyns, which they sell, and purchase with theyr price such comodityes and provisions as they stand in neede of, from time to time.
Página 214 - ... not by wheels. His lordship has also applied to us for engines; but we believe we are not likely to agree with him, as he lays too much stress upon his own ingenuity. " We cannot conclude without observing that, were we disposed to enter into any new concern whatever, there is no person we should prefer to Mr. Miller as an associate, being fully apprised of his worth and honour, and admirers of the ingenuity and industry with which he has pursued this scheme. " Permit me now, Sir, to return you...
Página 147 - Still, however, its inhabitants were more remarkable for opulence and commercial spirit, than for their attention to literature and science. During the struggle between Prelacy and Presbytery in Scotland, Greenock, like most of the towns and districts of the west of Scotland, had imbibed the most intolerant spirit of presbyterianism ; a spirit which at no period had been favourable to the exertions of poetical fancy, and which spent the last efforts of its virulence on the Douglas of Home.
Página 228 - The practice was to stop the engine entirely, a considerable time before the vessel reached the point of mooring, in order to allow for the gradual and natural diminution of her speed.

Información bibliográfica