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Seite 47 - Since this work was printed off, I have seen a substance excellently adapted to the purpose of wiping from paper the marks of a black-lead pencil. It must, therefore, be of singular use to those who practise drawing. It is sold by Mr. Nairne, mathematical instrument-maker, opposite the Royal Exchange. He sells a cubical piece, of about half an inch, for three shillings ; and he says it will last several years.
Seite 11 - Now know ye, that in compliance with the said proviso, I, the said John Watson, do hereby declare that the nature of my said Invention, and the manner in which the same...
Seite 101 - NOW KNOW YE, that in compliance with the said proviso, I, the said William Samuel Henson, do hereby declare that the nature of my said Invention, and the manner in which...
Seite 370 - Mr. Wilkinson has bored us several cylinders almost without error; that of 50 inches diameter, which we have put up at Tipton, does not err the thickness of an old shilling in any part.
Seite 97 - An act for the encouragement of the arts of designing and printing linens, cottons, calicoes and muslins, by vesting the properties thereof in the designers, printers, and proprietors for a limited time...
Seite 168 - ... used; for open one of the steam valves, and admit steam until one-fourth of the distance between it and the next valve is filled with steam, then shut the valve, and the steam will continue to expand, and to press round the wheel, with a diminishing power, ending in one-fourth of its first exertion.
Seite 100 - I hereby claim as my invention, the said process or method of manufacturing shear steel; and such my invention, being to the best of my knowledge and belief, entirely new and never before used within that part of his said Majesty's United Kingdom of Great Britain and Ireland, called England, his said dominion of Wales or Town of Berwick upon Tweed.
Seite 167 - I mentioned to you a method of still doubling the effect of the steam, and that tolerably easy, by using the power of steam rushing into a vacuum, at present lost.