The London journal of arts and sciences (and repertory of patent inventions) [afterw.] Newton's London journal of arts and sciences, Volumen4William Newton 1822 |
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Página 8
... equal degree of tension upon each strand . Thus , by the combination of this machinery , flat ropes are more perfectly made than by any other method now in use ; and , by the application of the crank motion for piercing the holes ...
... equal degree of tension upon each strand . Thus , by the combination of this machinery , flat ropes are more perfectly made than by any other method now in use ; and , by the application of the crank motion for piercing the holes ...
Página 21
... equal to that done with the spade . The effect of the first use of the plough , was not of so much bad consequences as when repeated : the treading of the sub - soil by the horses ' feet , together with the action of the iron bottom of ...
... equal to that done with the spade . The effect of the first use of the plough , was not of so much bad consequences as when repeated : the treading of the sub - soil by the horses ' feet , together with the action of the iron bottom of ...
Página 24
... equal to three ploughings and harrowings , will be thus . Three ploughings and harrowings , at 10s ..... £ 1 Seed wheat two bushels Harrowing the seed in 10 18 2 £ 2 10 Thus it appears that the cultivation of an acre of wheat by the ...
... equal to three ploughings and harrowings , will be thus . Three ploughings and harrowings , at 10s ..... £ 1 Seed wheat two bushels Harrowing the seed in 10 18 2 £ 2 10 Thus it appears that the cultivation of an acre of wheat by the ...
Página 39
... equal circumstances , less oxygen than the leaves of other . plants . The roots , wood , and petals , and in short , all parts not green , with the exception of some coloured leaves , do not affect the successive and alternate inhala ...
... equal circumstances , less oxygen than the leaves of other . plants . The roots , wood , and petals , and in short , all parts not green , with the exception of some coloured leaves , do not affect the successive and alternate inhala ...
Página 42
... equal to Turkey opium . Mr. Peart was rewarded for redeeming fifty - six acres of waste moor - land . In the Polite Arts sixty - nine medals were awarded d ; some to works of high promise ; some to mere school- pieces . In Manufactures ...
... equal to Turkey opium . Mr. Peart was rewarded for redeeming fifty - six acres of waste moor - land . In the Polite Arts sixty - nine medals were awarded d ; some to works of high promise ; some to mere school- pieces . In Manufactures ...
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Términos y frases comunes
1st Sat 2d Sat acid action advantage alpaco anchor animal annatto apparatus appears applied axle balance spring boat boiler bottom carbonic acid carriage chevaux-de-frise colour conj consists construction containing contrivance copper Coppermine River cylinder described Diff drawing rollers eclipsed effect employed engine engraving essential oil experiments feet fixed furnaces heat holes Holyhead improved inches Institution invention iron joints Journal of Arts June labour lamp leeches length lever London machine magnesia manual labour manufacture means ment metal method Middlesex mode months for inrolment muriate observations obtained operation passing patent Perigee piece pipe placed plate present produced proposed purpose quantity reservoir rollers ropes round screw shank shewn side Society spade specific gravity specification spring steam steam-engine substance surface tallow temperature timber tion tube upper verdigris vessel vicuna volume wheel wrought iron
Pasajes populares
Página 36 - LOUDON'S ENCYCLOPEDIA of AGRICULTURE: comprising the Laying-out, Improvement, and Management of Landed Property, and the Cultivation and Economy of the Productions of Agriculture. With 1,100 Woodcuts. 8vo. 21s. London's Encyclopaedia of Gardening : comprising the Theory and Practice of Horticulture, Floriculture, Arboriculture, and Landscape Gardening.
Página 112 - Dendrologia Britannica, or trees and shrubs that will live in the open air of Brttain during the whole year, to be illustrated by original descriptions and coloured plates from living plants.
Página 204 - Memoirs of Benvenuto Cellini, a Florentine Artist, written by himself, containing a -variety of Information respecting the Arts, and the History of the Sixteenth Century.
Página 259 - An HISTORICAL and DESCRIPTIVE ACCOUNT of the STEAM ENGINE; comprising a general View of the various Modes of employing Elastic Vapour as a "Prime Mover in Mechanics.
Página 274 - ... if it make a slight impression, denoting some degree of malleability, the iron is of a good quality, provided it be uniform; if fragments fly off, and no sensible indentation be made, the iron will be hard and brittle.
Página 146 - ... repairs in the machinery ; and should the supply of corn, &c. at any time, fall off, it is not necessary that the labour of the prisoners should be suspended; nor can they be aware of the circumstance. The...
Página 147 - When the machinery of the mill has attained its proper speed, certain balls rise by their centrifugal force, so *as to draw a box below the reach of a bell handle, which will then cease to ring a bell, placed in some convenient situation for the purpose. But should the men at the wheels cease to keep up the requisite speed in the mill work, the balls will descend, and a projecting pin on the box, striking the handle, placed in the proper situation for that purpose, will continue to ring the bell,...
Página 183 - Inrolled, March, 1822. To THOMAS MOTLEY, of the Strand, London, for certain Improvements in the Construction of Candlesticks or Lamps, and in Candles to be burned therein. THIS invention consists of an apparatus for burning tallow, cocoa-nut oil, palm oil, or a mixture of these or other concrete oleaginous substance, for the purposes of illumination ; which, by the use of this apparatus, may...
Página 268 - ... Commons, on Steamengines and Furnaces ; and a Chronological Catalogue of Works descriptive of the Steam-engine. In estimating the value of a work like the present, we must be guided rather by the useful facts detailed, than by the quantity of letter-press. A work of so. much practical importance required the historian's severe castigation. Much of the labour, therefore, bestowed . on such a work, must be wholly unknown, except to those who are more immediately conversant with historical research,...
Página 273 - N. down to hit. 69 deg. comprising an extent (reckoning the indentations and sinuosities observed) of about 800 miles ! The coast visited by Captain Scoresby is a continuation towards the North of that on which were planted the ancient colonies from Iceland, the fate of which is still veiled in such deep obscurity.