 | William Newton - 1841 - 468 sider
...Liverpool, who annealed them by placing them in cold water and gradually raising the temperature to die boiling point, at which it was kept for 24 hours;...seen twelve of these tubes break in one day, while an appatently ill-made tube had lasted six weeks. He found thin tubes last longer than thick ones. He... | |
 | Institution of Civil Engineers (Great Britain) - 1848 - 536 sider
...bursting of these drops or tears, on the end being broken, arose from a crack suddenly cominciining and extending itself rapidly throughout the mass,...of removing the stains of bog water from his boiler gauges by scouring them with emery; when reheated, they invariably broke; after many experiments, he... | |
 | Institution of Civil Engineers (Great Britain) - 1848 - 652 sider
...24 hours. He still found the calorific effect of 8 or 9 Ibs. of coke to be equal to that of 121bs. of coal; in his ovens, 20 cwt. of coal produced 14...of removing the stains of bog water from his boiler gauges by scouring them with emery; when reheated, they invariably broke ; after many experiments,... | |
 | United States. Army. Ordnance Department. War Department - 1917 - 100 sider
...been used, as for instance, either sodium silicate or sealing wax, immersing the range finder complete in cold water and gradually raising the temperature to the boiling point will ultimately loosen the cement and allow removal of the prism. The time required by this process... | |
 | Institution of Civil Engineers (Great Britain) - 1848 - 570 sider
...answer to several questions, Mr. Pellatt was not aware of any attempt having been made to cut the buIb of Prince Rupert's drops: he believed the peculiar...of removing the stains of bog water from his boiler gauges by scouring them with emery; when reheated, they invariably broke ; after many experiments,... | |
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... less dense than that used for smelting iron. In the north of England, a charge of coal generally remained in the oven during 48 hours ; in London, only 36 hours ; he made lighter charges and coked them in 24 hours. He still found the calorific effect... 