The Mechanics' Magazine, Museum, Register, Journal, and Gazette, Band 35M. Salmon, 1841 |
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Seite 2
... employed long before it was found to possess in- herent defects , and that its action pro- duced a constantly varying , rather than a regular motion . The cause of this is mainly attributable to its extreme sen- sibility and delicacy of ...
... employed long before it was found to possess in- herent defects , and that its action pro- duced a constantly varying , rather than a regular motion . The cause of this is mainly attributable to its extreme sen- sibility and delicacy of ...
Seite 6
... employed ; one old one of 32 feet diameter , by 12 feet wide , taking 1,200 feet of water per minute , the other nearly a new one , 33 feet in diameter , and 5 feet wide , requiring 600 feet per minute . The united power of the two ...
... employed ; one old one of 32 feet diameter , by 12 feet wide , taking 1,200 feet of water per minute , the other nearly a new one , 33 feet in diameter , and 5 feet wide , requiring 600 feet per minute . The united power of the two ...
Seite 14
... employed for the foregoing process consists of a strong cast - iron vessel , having a flanch round the top , and also a cross- bar in the middle , with a flat wide upper sur- face . The whole of the surrounding flanch and cross - bar ...
... employed for the foregoing process consists of a strong cast - iron vessel , having a flanch round the top , and also a cross- bar in the middle , with a flat wide upper sur- face . The whole of the surrounding flanch and cross - bar ...
Seite 15
... employed , so as to combine the two ad- vantages of power and speed , and it seems to be in mechanical unison with the 6 feet gauge . I would also propose to make the flanges of the wheels of the locomotive en- gines and carriages ...
... employed , so as to combine the two ad- vantages of power and speed , and it seems to be in mechanical unison with the 6 feet gauge . I would also propose to make the flanges of the wheels of the locomotive en- gines and carriages ...
Seite 21
... employed in Corn- wall is heavier . I believe it will be in Watt's favour if the best performance in pumping was taken at 30 millions per 94lbs . of Welsh coal in 1798. Now as one horse power per hour is 1,980,000lbs . 1 foot high , 94 ...
... employed in Corn- wall is heavier . I believe it will be in Watt's favour if the best performance in pumping was taken at 30 millions per 94lbs . of Welsh coal in 1798. Now as one horse power per hour is 1,980,000lbs . 1 foot high , 94 ...
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Häufige Begriffe und Wortgruppen
acid action apparatus applied atoms attached axle boat boiler bolt bottom Boulton and Watt carbon carbonic acid carriage cause centre CIVIL ENGINEER claim CLYDE STEAMERS coal combustion communication connected construction Cornish engines crank described diameter Duchess of Kent effect Enrolment Office equal evaporative experiments fastened feet fluid force frame fuel furnace Galignani gines give heat improvement consists inches invention iron J. C. Robertson John Scott Russell latent heat length lever machine machinery manufacture matter means mechanical ment metal mode motion moulds obtained passing patent Pilbrow pipe piston placed plate portion present pressure produced propelling Published by J. C. purpose quantity railway reverberatory furnace rollers Rolls Chapel screw September 22 shaft side six months sliding space speed spring steam steam navigation steam-engine stroke surface Symington temperature thread tion tons tube upper vacuum valve vapour vessel weight wheel William
Beliebte Passagen
Seite 125 - I have also reason to believe that the power of the STEAM ENGINE may be applied to work the WHEELS, so as to give them a quicker motion, and consequently, to increase that of the ship. In the course of this summer, I intend to make the experiment; and the result, if favourable, shall be communicated to the public.
Seite 298 - Somerset, then lord protector, a new office was erected for him ; he was made governor of the mystery and company of the merchant adventurers for the discovery of regions, dominions, islands, and places unknown, a pension was granted him by letters patent £166, 13s.
Seite 342 - It will be observed that above one inch diameter the same pitch is used for two sizes. This could not have been avoided without introducing small fractional parts. The economy of screwing apparatus was also promoted by repetition of the thread. It is important to remark that the proportion between the pitch and the diameter varies throughout the entire scale. Thus, the pitch of the...
Seite 132 - We left the fair city of New York; we passed through the romantic and ever-varying scenery of the highlands ; we descried the clustering houses of Albany; we reached its shores; and then, even then, when all seemed achieved, I was the victim of disappointment. Imagination superseded the influence of fact. It was then doubted, if it could be done again ; or if done, it was doubted if it could be made of any great value.
Seite 342 - A constant proportion is thus established between the depth and the pitch of the thread. In calculating the former, a deduction is to be made for the quantity rounded off, amounting to one-third of the whole depth, that is, one-sixth from the top, and one-sixth from the bottom of the thread. Making this deduction, it will be found that the angle of 55° gives for the actual depth rather more than three-fifths, and less than two-thirds of the pitch. The precaution of rounding off, is adopted to prevent...
Seite 342 - ... bolts, besides being weaker and less durable, might render it difficult to unfix them when occasion required. It will be remembered that the threads of which the preceding table shows the average, are used in cast iron as well as wrought, and this circumstance has no doubt had its effect in rendering them coarser than they would have been, if restricted to wrought iron.
Seite 339 - ... machinery. Great inconvenience is found to arise from the variety of threads adopted by different manufacturers. The general provision for repairs is rendered at once expensive and imperfect. The difficulty of ascertaining the exact pitch of a particular thread, especially when it is not a submultiple of the common inch measure, occasions extreme embarrassment. This evil would be completely obviated by uniformity of system, the thread becoming constant for a given diameter. The same principle...
Seite 472 - In such case, one half of the oxygen absorbed goes to form steam, by its union with the hydrogen ; while the other half forms carbonic acid, by its union with the carbon. Both constituents being thus supplied with their equivalent volumes of the supporter, the process would here be complete — perfect combustion would ensue, and no smoke be formed ; the quantity of air employed being ten times the rolume of the yas consumed.
Seite 339 - ... consideration. It does not appear that any combined effort has been hitherto made to attain this object As yet there is no recognized standard. This will not be matter of surprise, when it is considered that any standard must be to a great extent arbitrary. It is impossible to deduce a precise rule from mechanical principles, or from any number of experiments. On the other hand, the nature of the case is such that mere approximation would be unimportant, absolute identity of thread being indispensable....
Seite 125 - ... have also reason to believe that the power of the STEAM ENGINE may be applied to work the wheels, so as to give them a quicker motion, and consequently to increase that of the ship.