The Mechanic's Magazine, Museum, Register, Journal and Gazette, Band 30Robertson, 1839 |
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Seite v
... necessary for , 276 , 325 Desgrand's patent wood paper , 231 , 260 Design , government school of , 384 Devlin on the boot and shoe trade of Eng- land and France , 217 Diagraphe , the , 111 Dibbling machine , Hitchin's improved , 416 ...
... necessary for , 276 , 325 Desgrand's patent wood paper , 231 , 260 Design , government school of , 384 Devlin on the boot and shoe trade of Eng- land and France , 217 Diagraphe , the , 111 Dibbling machine , Hitchin's improved , 416 ...
Seite 6
... necessary to increase the angle of declivity beyond the limits of the length , a cord is attach- ed to the end , by which it may held out in the proper position . The price of this fire - escape , which , perhaps , has been the means of ...
... necessary to increase the angle of declivity beyond the limits of the length , a cord is attach- ed to the end , by which it may held out in the proper position . The price of this fire - escape , which , perhaps , has been the means of ...
Seite 12
... necessary to prevent accidents . Its success depends chiefly upon getting a solid and unyielding base for supporting the screw - jacks , and for the prolongation of the beam to the new site which the house is to occupy . It is further ...
... necessary to prevent accidents . Its success depends chiefly upon getting a solid and unyielding base for supporting the screw - jacks , and for the prolongation of the beam to the new site which the house is to occupy . It is further ...
Seite 13
... necessary to determine the cha- racter and usefulness of any such inven- tion . Sec . 2. The said Board shall give notice of the time and place of their meeting to examine such inventions , and shall direct the prepara- tions to be ...
... necessary to determine the cha- racter and usefulness of any such inven- tion . Sec . 2. The said Board shall give notice of the time and place of their meeting to examine such inventions , and shall direct the prepara- tions to be ...
Seite 20
... necessary , ad- mitting a vertical semi - revolution , so as to be laid over backward between the straps ii . This latter disposition of the block b was made whenever specimens of 20 or 30 inches in length were to be tried ; but when ...
... necessary , ad- mitting a vertical semi - revolution , so as to be laid over backward between the straps ii . This latter disposition of the block b was made whenever specimens of 20 or 30 inches in length were to be tried ; but when ...
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acid apparatus appears applied atmosphere boat boiler camera obscura carbonic acid carriage cause centre charcoal coal colour common consequence construction copper crucible cylinder diameter effect employed engine equal experiments feet fire fixed fluid force friction fuel furnace Galignani greater hour improvements inches invention iron latent heat length lever light Liverpool London machine machinery Magazine manufacture matrass matter means Mechanics ment Messrs metal method Metropolitan Railway miles minute mode motion muriatic acid object observed obtained paddle-wheel paddles paper pass patent PHOTOGENIC DRAWING piece pipe plate portion pounds present pressure produced Prussian blue purpose quantity rails Railway ratus render resistance road screw side six months specific gravity specific heat steam steam-engine stove strength sufficient surface tained temperature tenacity thermometer tion trials tube vapour vessel W. A. Robertson weight wheel zinc
Beliebte Passagen
Seite 415 - Archimedes; and he who perceived that the square of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two sides, is not in consequence a Pythagorean.
Seite 284 - ... perfectly safe. But as it did not yet come up entirely to the inventor's expectations, he proceeded to contrive a third lamp, in which he proposed to surround the oil vessel with a number of capillary tubes. Then it struck him, that if he cut off the middle of the tubes, or made holes in metal plates, placed at a distance from each other, equal to the length of the tubes, the air would get in better, and the effect in preventing the communication of explosion would be the same.
Seite 244 - Nor when cold Winter keens the brightening flood, Would I weak-shivering linger on the brink.
Seite 346 - The images formed by means of a camera obscura have been found to be too faint to produce, in any moderate time, an effect upon the nitrate of silver.
Seite 348 - ... and may be fixed for ever in the position which it seemed only destined for a single instant to occupy.
Seite 7 - I will set before your eyes a type of a ' squirt' which hath been devised to cast much water upon a burning house, wishing a like squirt and plenty of water to be alwaies in a readinesse where fire may do harme ; for this kind of squirt may be made to holde an hoggeshed of water, or if you will, a greater quantity thereof, and may be so placed on his frame, that with ease and a smal strength, it sahl be mounted, imbased or turned to any one side, right against any fired marke, and made to squirt...
Seite 84 - As the three angles of a plane triangle are equal to two right angles, that is, to 180° (Euc, 32. 1.) the' sum of any two of them is the supplement of the other.
Seite 185 - Sir, — Permit me, through the medium of your Journal, to call the attention of engineers on railways to the very erroneous method many of them adopt in setting out the curves, which, if intended to be segments of circular arcs — ought certainly to be so. Of course it must be generally known, from the great radii of even the least of the curves on railways — it would be impracticable to strike them, as in the usual manner, from a fixed centre; but from the known relation between the sine and...
Seite 414 - But if it be again washed with a liberal quantity of the solution of silver, it becomes again sensible to light, and even more so than it was at first. In this way, by alternately washing the paper with salt and silver, and drying it between times, Mr.
Seite 346 - The copy of a painting or the profile, immediately after being taken, must be kept in an obscure place ; it may, indeed, be examined in the shade, but in this case the exposure should be only for a few minutes ; by the Light of candles or lamps, as commonly employed, it is not sensibly affected.