| Perry Fairfax Nursey - 1843 - 678 pages
...acid, in rather more than three hours, to be in the proportion of 1 part to 100 of air, and, as M. Leblanc states, when in such condition the air is...principle of a descending draught to a lamp-burner. * "Collection de Mémoires relatifs à l'assainissement des atelier»;, des edifices publics, et des... | |
| 1844 - 950 pages
...the main part of the metal chimney to allow of a descending draught over the lamp, the tube, in place of going directly upwards, was made to turn short...the chandelier, or against the wall, if applied to a angle light. The gas light has its chimney, as usual, but the glass holder is so constructed as to... | |
| Thomas Webster - 1845 - 598 pages
...chimney to allow of a descending draught over the lamp, the tube, in place of going directly upward, was made to turn short over the edge of the glass,...single light. To this succeeded another form, which is exceedingly beautiful, and appears to be the perfection of lamp ventilation It is, in fact, a beautiful... | |
| 1843 - 508 pages
...acid, in rather more than three hours, to be in the proportion of 1 part to 100 of air, and, as M. Leblanc states, when in such condition the air is...principle of a descending draught to a lamp-burner. 246 Tbe gas-light has its glass chimney as usual, but the glass-holder is so constructed as to sustain... | |
| 1843 - 884 pages
...main part of the metal chimney, to allow of a descending draught over the lamp, the tube, in place of going directly upwards, was made to turn short over the edge of the glass, to descend to the area or bracket, to pass along it, and then ascend at the central part of the chandelier, or against... | |
| Thomas Webster, Mrs. William Parkes - 1852 - 1298 pages
...chimney to allow of a descending draught over the lamp, the tube, in place of going directly npwards, was made to turn short over the edge of the glass,...single light. To this succeeded another form, which is exceedingly beautiful, and appears to be the perfection of lamp ventilation. It is, in fact, a beautiful... | |
| 1844 - 446 pages
...the main part of the metal chimney to allow of a descending draught over the lamp, the tube, in place of going directly upwards, was made to turn short...or against the wall, if applied to a single light. • The gas light has its chimney, as usual, but the glass holder is so constructed as to sustain not... | |
| Franklin Institute (Philadelphia, Pa.) - 1849 - 444 pages
...main part of the metal chimney, to allow of a descending draught over the lamp, the tube, in place of going directly upwards, was made to turn short over the edge of the glass, to descend to the area or bracket, to pass along it, and then ascend at the central part of the chandelier, or against... | |
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