 | 1876 - 612 pages
...dried or " tempered." This is commenced in the open air, and if possible out of the draft. If the draft cannot be excluded, the place where the drying takes...slightly heated, commencing at a temperature from 60J to 70° Fahr., and keeping it up from twenty-five to thirty days, then increasing it from 80°... | |
 | N. E. Spretson - 1878 - 622 pages
...human labour, because the whole object of the machine is to operate on large quantities at a time. The paste made, and the article completed, it must...slightly heated, commencing at a temperature from 60 3 to 70° Fahr. and keeping it up from twentyfive to thirty days, then increasing it from 80° to 100°,... | |
 | N. E. Spretson - 1880 - 618 pages
...human labour, because the whole object of the machine is to operate on largo quantities at a time. The paste made, and the article completed, it must...temperature from 60° to 70° Fahr. and keeping it up from twentyfive to thirty days, then increasing it from 80° to 100°, leaving the article as long as possible,... | |
 | Charles Thomas Davis - 1895 - 712 pages
...crucibles, retorts, etc., is commenced in the open air, and, if possible, out of the draft. If the draft cannot be excluded, the place where the drying takes...heated, commencing at a temperature from 60° to 70° F., and keeping it up from twenty-five to thirty days; then increasing it from 80° to 100°, leaving... | |
 | John Sharp - 1900 - 914 pages
...human labour, because the whole object of the machine is to operate on large quantities at a time. The paste made, and the article completed, it must...temperature from 60° to 70° Fahr. and keeping it up from twentyfive to thirty days, then increasing it from 80° to 100°, leaving the article as long as possible,... | |
 | John Sharp - 1900 - 846 pages
...human labour, because the whole object of the machine is to operate on large quantities at a time. The paste made, and the article completed, it must...temperature from 60° to 70° Fahr. and keeping it up from twentyfive to thirty days, then increasing it from 80° to 1.00°, leaving the article as long as possible,... | |
 | John Sharp - 1900 - 810 pages
...heated, commencing at a temperature from 60° to 70° Fahr. and keeping it up from twentyfive to thirty days, then increasing it from 80° to 100°, leaving the article as long as possible, an active ventilation but the same temperature being kept up. The article should remain in a temperature... | |
| |
This is commenced in the open air, and if possible out of the draught. If the draught cannot be excluded, the place where the drying takes place is slightly heated, commencing at a temperature from 60° to 70° Fahr. and keeping it up from twentyfive... 