London Journal of Arts and Sceinces: And Repertory of Patent Inventions, Volume 4William Newton, Charles Frederick Partington W. Newton, 1822 - Industrial arts |
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Page 64
... bar , in the middle of which is an axis or pivot , a . On the upper surface of this bar a small stud , b , projects , which is acted upon by an angular notch , c , cut in the edge of a circular plate , d . This plate is attached by a ...
... bar , in the middle of which is an axis or pivot , a . On the upper surface of this bar a small stud , b , projects , which is acted upon by an angular notch , c , cut in the edge of a circular plate , d . This plate is attached by a ...
Page 69
... successively , by the rotatory motion given to the cylinder . 1 . Three cutting bars are suggested as the most desirable number to be twisted round a cylinder of two inches diameter , and three feet long . They are to.
... successively , by the rotatory motion given to the cylinder . 1 . Three cutting bars are suggested as the most desirable number to be twisted round a cylinder of two inches diameter , and three feet long . They are to.
Page 70
... bar shall be brought into action in one revolution of the cylinder . In order to form these cutting bars with per- fect accuracy , it is proposed that six bars of steel shall be wound round a cylinder , and there operated upon by ...
... bar shall be brought into action in one revolution of the cylinder . In order to form these cutting bars with per- fect accuracy , it is proposed that six bars of steel shall be wound round a cylinder , and there operated upon by ...
Page 112
... bar . col . THE London JOURNAL OF ARTS AND SCIENCES . No. XXI. MR . P. W. WATSON , of Hull has been engaged in the vicinity of London , since the spring of 1820 , in collecting materials for a Dendrologia Britannica , or trees and shrubs ...
... bar . col . THE London JOURNAL OF ARTS AND SCIENCES . No. XXI. MR . P. W. WATSON , of Hull has been engaged in the vicinity of London , since the spring of 1820 , in collecting materials for a Dendrologia Britannica , or trees and shrubs ...
Page 113
... bars , set at an angle to each other , but which are united , and square at the upper part where the shackle is introduced ; b , b , are the arms to which the lower parts of the shank bars are riveted , bolted , or otherwise secured ; c ...
... bars , set at an angle to each other , but which are united , and square at the upper part where the shackle is introduced ; b , b , are the arms to which the lower parts of the shank bars are riveted , bolted , or otherwise secured ; c ...
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Common terms and phrases
1st Sat 2d Sat acid action alpaco anchor animal annatto apparatus appears applied axle balance spring bars boat boiler bottom carbonic acid carriage chevaux-de-frise colour conj consists construction containing 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 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 paddles passing patent Perigee piece pipe placed plate present produced proposed purpose quantity reservoir revolving rollers ropes round screw Sealed 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 wick wrought iron
Popular passages
Page 36 - London's Encyclopaedia 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.
Page 205 - ... of Florence : I perceive that your manner of working, and your designs, are rather those of a sculptor than a goldsmith ; now I have considerable undertakings in bronze, so that if you will go with me to England, I will at once make your fortune.
Page 36 - Improvement, and Management of Landed Property, and the Cultivation and Economy of the Animal and Vegetable Productions of Agriculture, including all the latest Improvements. A general History of Agriculture in all Countries, and a Statistical View of its present State, with suggestions for its future progress in the British Isles.
Page 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.
Page 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...
Page 280 - Fifty lithographic prints, illustrative of a tour in France, Switzerland, and Italy, during the years 1819, 20, and 21, from original drawings taken in Italy, the Alps, and the Pyrenees, by MARIANNE COLSTON, in octavo, are preparing for publication.
Page 263 - ... pounds, two hundred and thirty-two feet, in a minute ; and of working, on an average, eight hours per day. This is equivalent to the work of thirty-four men; twenty-five square feet of canvas performing the average work of a day-labourer.
Page 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.
Page 268 - The poets tell us, that there is a pleasure in poetic pains, which only poets know. So it may, with truth, be said, there is a labour in the historian's researches, which only historians can know: days, nay weeks, are sometimes consumed in ascertaining a date, or verifying a fact. Mr. Partington appears to have spared no pains to render his work what he, doubtless, designed it to be, and which, in truth, it is, a fair epitome of what is known relative to that stupendous machine, the steam-engine,...
Page 157 - Is magnetism identical with electricity, or an independent agent, put into motion or activity by electricity ? Queries of this kind might be considerably multiplied, and stated in more precise and various forms : the solution of them, it must be allowed, is of the highest importance; and though some persons have undertaken to answer them in the most positive manner...