Minutes of Proceedings of the Institution of Civil Engineers, 91. ciltThe Institution, 1888 Vols. 39-204 (1874/75-1916/17) have a section 3 containing "Abstracts of papers in foreign transactions and periodicals" (title varies); issued separately, 1919-37, as the institution's Engineering abstracts from the current periodical literature of engineering and applied science, published outside the United Kingdom. |
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33 sonuçtan 1-5 arası sonuçlar
Sayfa 36
... goaves and cavities of old workings exist to any considerable extent , where moreover the natural ventilation is only supplemented by comparatively feeble addi- tional ventilating resources , a sudden fall in atmospheric pressure may be ...
... goaves and cavities of old workings exist to any considerable extent , where moreover the natural ventilation is only supplemented by comparatively feeble addi- tional ventilating resources , a sudden fall in atmospheric pressure may be ...
Sayfa 37
... goaves , in mines where firedamp is prevalent — a view which cannot but be shared by all those who have given attention to the condition of old workings in coal - mines . These goaves , which continue to extend in area as a coal - seam ...
... goaves , in mines where firedamp is prevalent — a view which cannot but be shared by all those who have given attention to the condition of old workings in coal - mines . These goaves , which continue to extend in area as a coal - seam ...
Sayfa 38
... goaves , and , on the other , of effectually drawing off the gas from goaves by special drain - arrangements , or of sealing the goaves so as to prevent the formation of explosive gas- and air - mixtures within them , especially when ...
... goaves , and , on the other , of effectually drawing off the gas from goaves by special drain - arrangements , or of sealing the goaves so as to prevent the formation of explosive gas- and air - mixtures within them , especially when ...
Sayfa 39
Institution of Civil Engineers (Great Britain). goaves , and considers that , what at first may appear a dangerous state of things , arising out of the existence of extensive imperfectly packed goaves in a mine , is considerably modified ...
Institution of Civil Engineers (Great Britain). goaves , and considers that , what at first may appear a dangerous state of things , arising out of the existence of extensive imperfectly packed goaves in a mine , is considerably modified ...
Sayfa 40
... goaves in a mine . That coal - dust does very greatly add to the dangers and increases the disasters caused by the existence of firedamp in mines , and that it may even , under certain special conditions , give rise to disastrous ...
... goaves in a mine . That coal - dust does very greatly add to the dangers and increases the disasters caused by the existence of firedamp in mines , and that it may even , under certain special conditions , give rise to disastrous ...
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acid alumina aluminium apparatus applied Author battery Bessbrook boiler bridge Buddicom C.E. VOL caissons carbon carbonic acid carried cast-iron cent centre coal coal-dust collieries conductor connection construction cost cubic cubic metres curves cylinder Davy lamp diameter discharge distance dust dynamo efficiency electric employed engines experiments explosion Fahrenheit feet firedamp furnace girders goaves heat hydraulic increased Inst iron irrigation Joseph Whitworth kilograms lamp length light lime load local battery locomotive machine means measure Messrs metal method metres miles mines motor Mueseler lamp Newry Nile Nilometer obtained ordinary Paper passing pier pipes plates practical pressure produced proportion quantity rails Railway revolutions per minute river rosin safety-lamps shaft shot side sleepers steam steel Sulina surface tacheometer temperature tion tons tramway Upper Egypt velocity ventilation weight wheel whilst Whitworth wire yards
Popüler pasajlar
Sayfa 350 - ... thermometers, anemometers, and other accessory apparatus. " The engineering laboratories are also provided with a number of friction brakes ; with machinery for determining the tension required in a belt or rope to enable it to carry a given power at a given speed, with no more than a given amount of slip ; with three transmission dynamometers ; with a complete set of Westinghouse air-brake apparatus, including the parts belonging on the car and on the locomotive ; with cotton machinery as follows,...
Sayfa 443 - These bars pass through the moving head, and are connected at the lower ends by cross bars which are fastened to the pressing ram. The moving head works between the base and the top or fixed head of the press, and is raised or lowered by the admission or exit of water from the under side of the rams of the lifting cylinders. The moving head can be firmly and rapidly locked at any height from the base which may suit the work to be operated upon. The moving head, as already mentioned, carries a forging...
Sayfa 159 - Board may order the patentee to grant licenses on such terms as to the amount of royalties, security for payment, or otherwise, as the Board, having regard to the nature of the invention and the circumstances of the case, may deem just, and any such order may be enforced by mandamus.
Sayfa 435 - The labouring classes are comparatively few in number, but this is counterbalanced by, and indeed may be regarded as one of the chief causes of, the eagerness with which they call in the aid of machinery in almost every department of industry. Wherever it can be introduced as a substitute for manual labour, it is universally and willingly resorted to...
Sayfa 432 - The express purpose of the machine is to produce true surfaces, and it is itself constructed of slides, according to the truth of which will be that of the work performed. When it is considered that the lathe and the planing engine are used in the making of all other machines, and are continually reproducing surfaces similar to their own, it will manifestly appear of the first importance that they should themselves be perfect models.
Sayfa 436 - If so, look at the sums expended in patterns, designs, and in the number of tools for their manufacture. Nor is this all ; for if there were only ten sizes instead of thirty, there would be three times the number made of each pattern ; and, as you know, the very soul of manufacture is repetition. By attention to this, the shipowner would be benefited by getting a better engine at a less price. In the case of locomotives and carriages, I would urge the subject on the attention of our members, the...
Sayfa 36 - Chair during the year, and for his Address, and that he be requested to allow it to be printed in the Quarterly Journal of the Society.
Sayfa 441 - The system of forging consists in compressing the liquid metal in the mould immediately after casting, and in substituting a hydraulic press for the hammer, in the subsequent forging of the metal. The flask is made of steel and is built up of sections united by broad flanges bolted together in such numbers as to accommodate the, length of the ingot to be cast. All moulds are cylindrical in form. The interior of the flask is lined with square rods of wrought iron, longitudinally arranged, which form...
Sayfa 312 - The steam generated in the boiler is employed for driving a pair of engines of 31 % indicated horse power, which compress air into two large receivers at Chapel Wharf, whence it passes through a 5-inch main to the town quay, where it is automatically supplied to the ejectors when required for working them. The air also serves for driving the precipitated sludge through the 4-inch main from the reservoirs to the destructor, for which purpose the air is led by a pipe from the receiver at Chapel Wharf...
Sayfa 83 - In any place in a mine in which there is likely to be any such quantity of inflammable gas as to render the use of naked lights dangerous...