| 1840 - 812 Seiten
...color, but in its faculty of welding, by the sulphur existing in the coal or coke used in the furnace ; this is prevented by occasionally throwing about a...disappears, but the glass sometimes becomes green or blue, probably by the action of the sulphureous acid gas from the coke. The reddish tint will however... | |
| 1840 - 416 Seiten
...color, but in its faculty of welding, by the sulphur existing in the coal or coke used in the furnace ; this is prevented by occasionally throwing about a...disappears, but the glass sometimes becomes green or blue, probably by the action of the sulphureous acid gas from the coke. The reddish tint will however... | |
| 1840 - 644 Seiten
...colour, but in its faculty of welding, by the sulphur existing in the coal or coke used in the furnace, this is prevented by occasionally throwing about a...from the glass the reddish tint imparted to it by by manganese ; and in large masses, not only the reddish tint disappears, but the glass sometimes becomes... | |
| Perry Fairfax Nursey - 1840 - 640 Seiten
...colour, but in its faculty of welding, by the sulphur existing in the coal or coke used in the furnace, this is prevented by occasionally throwing about a...the fire ; the explosive vapour thus raised carries oft' the sulphureous gas. The process of annealing has the remarkable property of carrying off from... | |
| Institution of Civil Engineers (Great Britain) - 1848 - 536 Seiten
...off the sulphureous gas. The process of annealing has the remarkable property of carrying Annealoff from the glass the reddish tint imparted to it by manganese ; and '"&• in large masses, not only the reddish tint disappears, but the glass sometimes becomes green... | |
| Institution of Civil Engineers (Great Britain) - 1848 - 570 Seiten
...colour, hut in its faculty of welding, by the sulphur existing in the coal or coke used in the furnace, this is prevented by occasionally throwing about a...annealing has the remarkable property of carrying Annealoff from the glass the reddish tint imparted to it by manganese ; and '"£• in large masses,... | |
| 1840 - 632 Seiten
...annealing has the remarkable property of carrying off from the glass the reddish tint imparted to it by by manganese ; and in large masses, not only the reddish tint disappears, but the gloss sometimes becomes green or blue, probably by the action of the sulphureous acid gas from the... | |
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