 | Perry Fairfax Nursey - 1825 - عدد الصفحات: 472
...which were never intended by the inventors to carry more than six pound» in the extreme. As the Bolton and Watt engines are now worked with from ten to twenty...nearly as great as with those working at a pressure of 150 pounds to the square inch, Bud in some instances greater, where the construction of the boiler... | |
 | 1825 - عدد الصفحات: 486
...which were never intended by the inventors to carry more than six ponncto in the extreme. As the Bolton and Watt engines are now worked with from ten to twenty...nearly as great as with those working at a pressure of ISO pounds to the square inch, snd in some instances greater, where the construction , of the boiler... | |
 | Samuel Smiles - 1857 - عدد الصفحات: 576
...then it might be put on only four wheels. The Company to be at liberty to test the boiler, &c., by a pressure of one hundred and fifty pounds to the square inch. 6. A mercurial gauge must be affixed to the machine, showing the steam pressure above forty-five pounds... | |
 | Samuel Smiles - 1857 - عدد الصفحات: 550
...then it might be put on only four wheels. The Company to be at liberty to test the boiler, &c., by a pressure of one hundred and fifty pounds to the square inch. 6. A mercurial gauge must be affixed to the machine, • Observations on the comparative Merits of... | |
 | Charles C. B. Seymour - 1858 - عدد الصفحات: 606
...then it might be put on only four wheels. The company to be at liberty to test the boiler, etc., by a pressure of one hundred and fifty pounds to the square inch. 6. A mercurial gauge must be affixed to the machine, showing the steam pressure above forty-five pounds... | |
 | Samuel Smiles - 1859 - عدد الصفحات: 384
...then it might be put on only four wheels. The Company to be at liberty to test the boiler, &c., by a pressure of one hundred and fifty pounds to the square inch. 6. A mercurial gauge must be affixed to the machine, showing the steam pressure above forty-five pounds... | |
 | Charles Cist - 1859 - عدد الصفحات: 434
...of seven gallons in an inconceivably short space of time. The safety valve on the machine indicates a pressure of one hundred and fifty pounds to the square inch. There are ten of these factories here, employing eighty hands ; value of product, one hundred and seventy-six... | |
 | Vermont. Railroad Commissioner - 1860 - عدد الصفحات: 140
...then it might be put on only four wheels. The company to be at liberty to test the boiler, etc., by a pressure of one hundred and fifty pounds to the square inch. 6. A mercurial guage must be affixed to the machine, showing the steanv pressure above forty-five pounds... | |
 | 1861 - عدد الصفحات: 656
...tight, and a vacuum produced by an air pump, and the creosote injected into the pores of the wood by a pressure of one hundred and fifty pounds to the square inch, when as much ae eighteen pounds of creosote has been forced into a cubic foot. When ten pounds of creosote... | |
 | Samuel Smiles - 1862 - عدد الصفحات: 558
...then it might be put on only four wheels. The Company to be at liberty to test the boiler, &c., by a pressure of one hundred and fifty pounds to the square inch. G. A mercurial gauge must be affixed to the machine, showing the steam pressure above forty-five pounds... | |
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... tons, then it might be put on only four wheels. The company to be at liberty to test the boiler, etc., by a pressure of one hundred and fifty pounds to the square inch. 
