London Journal of Arts and Sceinces: And Repertory of Patent Inventions, Band 3William Newton, Charles Frederick Partington W. Newton, 1821 |
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Seite 20
... iron retorts in preference to cast iron - there is very little difference in price , the former will last double the time of the latter , and conse- quently the expense of resetting is saved ; and when worn out , the wrought iron is ...
... iron retorts in preference to cast iron - there is very little difference in price , the former will last double the time of the latter , and conse- quently the expense of resetting is saved ; and when worn out , the wrought iron is ...
Seite 159
... Cast Iron France . 159 was incrusted to the depth of an inch , with a substance having all the exterior characters of impure plumbago ; easily sectile , greasy to the touch , and leaving a black streak upon paper . This substance ...
... Cast Iron France . 159 was incrusted to the depth of an inch , with a substance having all the exterior characters of impure plumbago ; easily sectile , greasy to the touch , and leaving a black streak upon paper . This substance ...
Seite 242
... iron , to be fixed on the upper surface of a line of cast iron rails , of whatever form such rails may be . Second- in affixing a bar of malleable iron to the under surface of the cast iron rail , in order to give support to the ...
... iron , to be fixed on the upper surface of a line of cast iron rails , of whatever form such rails may be . Second- in affixing a bar of malleable iron to the under surface of the cast iron rail , in order to give support to the ...
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