The London Journal of Arts and Sciences, Band 13Sherwood, Neely, and Jones, 1839 Containing reports of all new patents, with a description of their respective principles and properties: also, original communications on subjects connected with science and philosophy; particularly such as embrace the most recent inventions and dicoveries in practical mechanics. |
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acid alkali apparatus application axis axle barytes bog earth boiler caoutchouc carbonate carbonic acid carriage centre chloride city of London claim cloth coal coke cones conj connected construction county of Middlesex crank cylinder described diff Ditto passes drawing roller effect employed Encke's Comet R. A. engine fixed foreigner residing frame fuel furnace groove heat horizontal inches inclined plane Inrolment Office invention of improvements iron lever clamp loom machine manner manufacture materials means ments metal method Middlesex mode months for inrolment motion mould nitric acid operation paddle wheel patent peat piece pipe placed plate proper protoxide Prussian blue prussiate of potash pulley purpose quantity retort revolving rollers Rolls Chapel Office rotary satt screw shaft shown side sliding spring staves steam strap stud substances suitable surface teeth tion upper valve vessel warp threads weight wire yarns
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Seite 74 - CLAIMS. Having described the nature of our invention and the manner in which the same is to be performed, we...
Seite 128 - Having thus described the nature of my invention, and the manner of performing the same, I would have it understood that I do not confine myself to the details...
Seite 279 - That it is equal to the best coke, weight for weight; ip heating power, a little inferior, weight for weight, to wood charcoal, where quantity of heat is the only consideration ; but where bulk of stowage and high intensity of heat are important considerations, it is superior to wood charcoal.
Seite 104 - Engineer, for certain improvements in machinery, tools, or apparatus for cutting or planing metals and other substances, and in securing or fastening the keys or cottars used in such machinery and other machinery where keys or cottars are commonly applied...
Seite 85 - This shaft or axis is to receive rotatory motion from a steam-engine or other suitable power. b, b, are four curved blades, each a portion of a curve, which if continued would produce a screw, but here I would remark that screws have been heretofore attempted to be used and have failed of success, which has been owing to the water not being able to pass away, but that may be said to...
Seite 347 - ... (the distilled spirit of caoutchouc), or with petroleum-naphtha, but remain at the bottom of these liquids as distinct as mercury does from water. Soda caustic lye does not dissolve the juice ; nitric acid (double aquafortis) converts it into a red curdy magma. The filtered aloetic liquid is not affected by the nitrates of baryta and silver; it affords with oxalate of ammonia minute (races of lime.
Seite 36 - ... secure by letters patent, is the manner, herein described, of securing the rails of iron fences by means of sectional or divided posts, having slots therein, which are so arranged that, when in place, they break joint with each other, the slot in one section...
Seite 345 - TISSUES,* the threads of caoutchouc are first of all deprived of their elasticity, to prepare them for receiving a sheath upon the braiding machine. For this purpose they are stretched by hand, in the act of winding upon the reel, to 7 or 8 times their natural length, and left two or three weeks in that state of tension upon the reels. Thread thus...
Seite 162 - ... shall think fit, to grant new letters patent for the said invention for a term not exceeding seven years after the expiration of the first term , any law , custom , or usage to the contrary...
Seite 96 - ... the pond of the canal, a water-tight gate at the end of the cradle and of the pond of the canal is raised up, and leaves the communication betwixt the water in the canal and in the cradle free, and the boat swims into or out of the cradle. The cradles are balanced over three cast-iron wheels of 16 feet in diameter, to the centre of one of which is fitted spur and bevil gear, so that the motion may be given by machinery worked by the hand, without any preponderating weight of water in the cradle,...