Report of the Commissioner of Patents, to the Senate of the United States: On the Subject of Steam Boiler Explosions ... December 30, 18481849 - 184 էջ |
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Report of the Commissioner of Patents, to the Senate of the United States ... United States. Patent Office Ամբողջությամբ դիտվող - 1849 |
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accident Alabama river alloy annealing apparatus ascertained boat Boiler burst boiler head boiler iron Burst boiler calculation captain Car of Commerce carelessness cast iron causes of explosions cent Cincinnati Collapse of flue comparison copper cylinder danger deck defective degrees diminution direction effect elasticity elongation employed engineer examination excessive pressure experiments fire force fracture Franklin Institute friction fusible fusible alloy gauge gave give glass grains hundred increase inspection inspector latent heat latter length lever Louisville manufactured mean result mean strength melted ments Mississippi river Moselle observed obtained occurred Ohio river operation pass passengers persons were killed pig metal plate port portion prevent produced quantity rivets rolled safety guard safety valve screw specific heat specimens square inch standard piece steam boilers steamboat strength of materials thermometer thickness tion trials tube ture unduly heated vapor vessel weight wounded wrought iron
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Էջ 33 - An act to amend an act entitled an act to provide for the better security of the lives of passengers on board of vessels propelled in whole or in part by steam...
Էջ 29 - That in all suits and actions against proprietors of steamboats, for injuries arising to person or property from the bursting of the boiler of any steamboat, or the collapse of a flue, or other injurious escape of steam, the fact of such bursting, collapse, or injurious escape of steam, shall be taken as full prima facie evidence, sufficient to charge the defendant or those in his employment...
Էջ 9 - One of the points of enquiry to which their attention was specially directed, was to ascertain the sort of bursting produced by a gradual increase of pressure ; and, after several decisive experiments, they came to the conclusion that all the circumstances attending the most violent explosions may occur without a sudden increase of pressure within a boiler. — This gradually increased pressure may result from the accidental failure of the apparatus intended to relieve it, or from this being intentionally...
Էջ 6 - ... and satisfied themselves that in no case was an increase of elasticity produced by injecting water into hot and unsaturated steam, but the reverse ; and, in general, that the greater quantity thus introduced, the more considerable was the diminution in the elasticity of the steam.
Էջ 167 - April, 1838, between four and five o'clock in. the afternoon, this shocking catastrophe occurred. The boat was crowded with passengers ; and as is usually the case on our western rivers, in regard to vessels passing westwardly, the largest proportion were emigrants. They were mostly deck passengers, many of whom were poor Germans, ignorant of any language but their own, and the larger portion consisted of families, comprising persons of all ages. Although not a large boat, there were eighty-five...
Էջ 169 - A touching display of maternal affection was evinced by a lady, who, on being brought to the shore, clasped her hands and exclaimed,
Էջ 25 - ... to be important improvements upon the safety apparatus of the steam engine, the undersigned does not feel called upon to express any opinion as to their relative merits, still less to point out any particular apparatus as best calculated to meet the wants of the public. Even if any one of these contrivances could be singled out with certainty as the best existing plan for obviating danger of explosion, it is not believed that its employment ought to be recommended as the subject of compulsory...
Էջ 167 - The Moselle was a new boat, intended to ply regularly between Cincinnati and St. Louis. She had made but two or three trips, but had already established a high reputation for speed ; and, as is usual in such cases, those by whom she was owned and commanded, became ambitious to have her rated as a ' crack boat,' and spared no pains to exalt her character. The newspapers noticed the quick trips of the Moselle, and passengers chose to embark in this boat in preference to others. Her captain was an enterprising...
Էջ 143 - It will be found that with the exception of a slight anomaly between 520° and 570°, amounting to — .08, the numbers expressing the ratio between the elevations of temperature, and the diminutions of tenacity, constantly increase until we reach 932°, at which it is 2.97, 'and that from this point the ratio of diminution decreases to the limits of our range of trials, 1317°, where it is 2.14. It will also be observed, that the diminution of tenacity at 932°, where the law changes from an increasing...
Էջ 7 - ... elasticity of steam by heat. That a gradual increase of pressure can produce all the effects of the most violent explosions, has been conclusively proved by the experiments of the committee of the Franklin Institute; in which it was shown that the very effects which, in the pamphlet alluded to, are considered impossible to arise from such a cause, did actually follow the gradually, increased tension of the steam. § The existence of one sufficient cause, fully supported by the experiments of...