The London journal of arts and sciences (and repertory of patent inventions) [afterw.] Newton's London journal of arts and sciences

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William Newton
1843
 

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Seite 286 - Provided also and be it declared and enacted, that any declaration before mentioned shall not extend to any letters patent and grants of privilege for the term of fourteen years or under, hereafter to be made of the sole working or making of any manner of new manufactures within this Realm, to the true and first inventor and inventors of such manufactures, which others at the time of making such letters patents and grants shall not use, so as also they be not contrary to the law nor mischievous to...
Seite 134 - ... he shall return to the person by whom the same has been forwarded to him ; and in order to give ready access to the copies of designs so registered...
Seite 130 - that trees just cut down may be- rapidly impregnated with the solution of .the first class, hereafter mentioned (among which is included the pyrolignite of iron) by merely placing...
Seite 120 - ... straps, riveted on to the circumference of the tanks. Notwithstanding the great strength of these girders, several were broken by the pressure applied during the process. The vessels are lined with felt, upon which is laid a covering of...
Seite 316 - Martin's-lane, gentleman, for improvements in combining materials to be used for cementing purposes, and for preventing the passage of fluids, and also for forming or constructing articles from such compositions of materials.
Seite 211 - ... are so small as to be easily obstructed or choked. The water enters the buckets in the direction of the tangent to the last element of the guide curves, which is a tangent to the first element of the curved buckets. The water ought to press steadily against the curved buckets, entering them without shock or impulse, and quitting them without velocity, in order to obtain the greatest useful effect, otherwise a portion of the water's power must be wasted or expended without producing useful effect...
Seite 287 - ... and duties on import and export and that the allowances encouragements and drawbacks prohibitions restrictions and regulations of trade and the customs and duties on import and export settled in England when the union commences shall from and after the union take place throughout the whole United Kingdom...
Seite 121 - ... gallons of the latter, the clear solution is then poured off into the reservoir where water is added till it is diluted to the proper point, which may be ascertained by a hydrometer ; a more perfect test is the action of the solution upon silver, which it turns brown at the requisite degree of saturation. The operations of exhaustion and pressure employ eight men for five hours, the whole process occupying about seven hours, during which time from 17 to 20 loads are kyanized in each tank. It...
Seite 133 - Woven fabrics, composed of linen, cotton, wool, silk, or hair, or of any two or more of such materials, if the design be applied by printing, or by any other process by which colours are or may hereafter be produced...
Seite 292 - ... so that, if they be new here, it is within the statute; for the Act intended to encourage new devices useful to the kingdom ; and, whether learned by travel or by study, it is the same thing.

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