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قراءة كتاب Scientific American magazine Vol 2. No. 3 Oct 10 1846 The Advocate of Industry and Journal of Scientific, Mechanical and Other Improvements

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Scientific American magazine Vol 2. No. 3 Oct 10 1846
The Advocate of Industry and Journal of Scientific,
Mechanical and Other Improvements

Scientific American magazine Vol 2. No. 3 Oct 10 1846 The Advocate of Industry and Journal of Scientific, Mechanical and Other Improvements

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دار النشر: Project Gutenberg
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class="i0">A smell meanwhile, like burning clothes,
Flouting the angry Roman nose?
Is it not Conscript Fathers shocking?
Does it not seem your mem'ry mocking?
The Roman and the Railway station—
What an incongruous combination!
How odd, with no one to adore him,
Terminus—and in the Forum!'—[Punch.

Good Advice.

Somebody lays down the following rules to young men in business. They will apply equally well to young and old. 'Let the business of every one alone, and attend to your own.—Don't buy what you don't want. Use every hour to advantage, and study even to make leisure hours useful. Think twice before you spend a shilling; remember you have another to make for it. Find recreation in looking after your business, and so your business will not be neglected in looking after recreation.—Buy fair, sell fair, take care of the profits; look over the books regularly, and if you find an error, trace it out. Should a stroke of misfortune come upon you in trade, retrench—work harder, but never fly the track; confront difficulties with unflinching perseverance, and they will disappear at last, and you will be honored; but shrink from the task, and you will be despised.'


In Russia, coffins are generally brown, but children have pink, grown up unmarried girls sky blue, while other females are indulged with a violet color.



Barnums Safety Apparatus.

Barnums Safety Apparatus


Introduction.—Much has been said of late in and about New York on the subject of the adoption by steamboat proprietors of some apparatus that will in some measure secure the passengers against such casualties as have occurred on board the Excelsior and several other boats. There have been a great variety of inventions introduced for the purpose of preventing explosions; but from the best information we can obtain on the subject, we are of the opinion that Mr. Barnum's apparatus takes a general preference over all others. It consists of an arrangement of machinery, partly within the boiler, and which is constructed on such a self-regulating principle as to keep up a supply of water within the boiler, without any attention from the engineer; and in case that the apparatus itself should become impaired or cease to operate regular, the engineer becomes instantly notified thereof.

Explanation.—It is inexpedient for us to give a full and minute description of the several points and peculiarities of the mechanism of this apparatus; but we may so far explain as to say that a horizontal lever inside of the boiler, being mounted on a pivot near its centre, and connected to a buoy or float at one end, as represented in the engraving, (a part of the surface of the boiler being omitted for that purpose, and not, as some might infer, to represent the apparatus attached to a boiler already burst by an explosion.) One of these floats is placed within a small enclosed box within the boiler, that it may be secure from the effect of foam which sometimes pervades the surface of the water in a steam boiler.—This lever, near its bearing, is connected to a short valve-rod, which governs the valves in a small valve-chamber, whereby the steam is occasionally admitted to operate a small steam engine, placed directly over the boiler; and this engine puts in motion a pump, by which the water in the boiler is replenished. This engine, it will be understood, is never put in operation except when the water in the boiler becomes too low: and when the water rises, the elevation of the encased float closes the valve and stops the engine. The ball on the end of the lever acts as a counterpoise to the float, (which is of stone) that it may be freely influenced by the rising or falling of the surface of the water.

The small engine constructed by Mr. Barnum for this purpose, is well adapted to its place, and has several peculiarities whereby the valves, and consequent reciprocal motion of the engine are regulated without the use of a crank or fly-wheel: but of these we cannot at present give a minute description. The whole of this apparatus evinces much scientific ability of the inventor, Daniel Barnum, Esq., resident at present in this city, and who has received many certificates from the first scientific men in the Union, in commendation of his invention.



A Piggish Parvenue.

A proud porker, fancying that it was degrading to his dignity to root in the gutter, came upon the sidewalk, and full of his consequence, promenaded from morning till night, leaving his humbler companions to munch corn, husks and potatoe parings. He fared as people usually do, who from vanity assume a station they are not qualified to fill. In the gutter he would have lived in unnoticed enjoyment. On the walk he got kicked by every passenger and bitten by every cur, till hungry and bruised he was glad to return to his proper station.—[Ex, paper.



Wanting Workmen back Again.

The proprietors of the cotton mill in Schuylerville, N. Y., who reduced the wages of their hands, a week or two since, says the Schuylerville Herald, twenty-five per cent., are now, and have been for several days, endeavoring to induce them to return to their work, at the old wages; but they are too late, as most of them are engaged to work in other mills.



Hard Climbing.

A man in Orange county was found one night climbing an over-shot wheel in a fulling mill. He was asked what he was doing. He said he was 'trying to go up to bed, but some how or other these stairs won't hold still.' There are many unlucky wights who are laboriously endeavoring to climb fortune's ladder on the same principle.



Power of Imagination.

An amusing incident recently occurred at Williams College, which is thus related by a correspondent of the Springfield Gazette:

The professor of chemistry, while administering, in the course of his lectures, the protoxide of nitrogen, or, as it is commonly called, laughing gas, in order to ascertain how great an influence the imagination had in producing the effects consequent on respiring it, secretly filled the India rubber gas-bag with common air instead of gas. It was taken without suspicion, and the effects, if anything, were more powerful than upon those who had really breathed the pure gas. One complained that it produced nausea and dizziness, another immediately manifested pugilistic propensities, and before he could be restrained, tore in pieces the coat of one of the bystanders, while the third exclaimed, 'this is life. I never enjoyed it before.' The laughter that followed the exposure of this gaseous trick may be imagined.



True Policy.

Under all circumstances there is but one honest course; and that is, to do right and trust the consequences to Divine Providence. 'Duties are ours: events are God's.' Policy, with all her cunning, can devise no rule so safe, salutary and effective, as this simple maxim.


Six thousand pounds of Saxony wool have been purchased in Pennsylvania, at sixty-two and a half cents per pound.




A LIST OF PATENTS

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