 | 1838 - 520 trang
...Austrian dominions, to the almost total exclusion of flat and round ropes made of hemp. These iron ropes are of equal strength with a hempen rope of four times the weight. One has been in use upwards of two years without any perceptible wear, whereas a flat rope performing... | |
 | Perry Fairfax Nursey - 1838 - 510 trang
...Austrian dominions, to the almost total exclusion of flat and round ropes made of hemp. These iron ropes are of equal strength with a hempen rope of four times the weight. One has been in use upwards of two years without any perceptible wear, whereas a flat rope performing... | |
 | 1838 - 510 trang
...Austrian dominions, to the almost total exclusion of flat and round ropes made of hemp. These iron ropes are of equal strength with a hempen rope of four times the weight. One has been in use upwards of two years without any perceptible wear, whereas a flat rope performing... | |
 | British Association for the Advancement of Science - 1839 - 630 trang
...Austrian dominions, to the almost total exclusion of flat and round ropes made of hemp. These iron ropes are of equal strength with a hempen rope of four times the weight. One has been in use upwards of two years without any perceptible wear, whereas a flat rope performing... | |
 | 1842 - 496 trang
...substitution of ropes made of twisted iron wire for the flat hempen ropes commonly in use. These iron ropes are of equal strength with a hempen rope of four times the weight : the diameter of the largest used in the deepest mines of Austria, is one inch and a half, the strength... | |
 | Andrew Ure - 1853 - 1034 trang
...shroud laid. The above statement is the result of several hundred experiments. ROPE, Exhibition. — Specimens of Smith's patent galvanized and ungalvanized...fencing, and submarine telegraphs. Iron wire ropes nre of equal strength with a hempen rope of four times the weight, and resist the wear and tear they... | |
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... seven years ago, ropes composed of twisted iron wire, as a substitute for the flat ropes previously in use. Since that time they have been adopted throughout the mines of Hungary and most of those in the Austrian dominions, to the almost total exclusion... 