 | Perry Fairfax Nursey - 1843 - 678 pages
...effect never reaches the lamp. The upper, or the second, or the third, or even the fourth portion ot the ventilating flue, might be entirely closed, yet...downward current occurs, they dispose of the whole of it iuto the room, without ever affecting the lamp. The ventilating flue is, in fact, a tube which, as... | |
 | William Newton - 1844 - 540 pages
...iuto the air of the lanteru, but a portion of the air passes from the lantern by these apertures iuto the flue, and so the lantern itself is in some degree...lamp. The ventilating flue is, in fact, a tube which, aa regards the lamp, can carry every thing up, but conveys nothing down. In lighthouses with many separate... | |
 | William Newton, Charles Frederick Partington - 1844 - 536 pages
...It is found that the wind may blow suddenly in at the cowl, and the effect never reaches the lump. The upper, or the second, or the third, or even the...fact, a tube which, as regards the lamp, can carry every thing up, but conveys nothing down. In lighthouses with many separate lamps and reflectors, the... | |
 | 1843 - 508 pages
...effect never reaches the lamp. The upper, or the second, or the third, or even the fourth portion ot the ventilating flue, might be entirely closed, yet...tube which, as regards the lamp, can carry everything /.•/'• but conveys nothing down. In lighthouses with many separate: lamps and reflectors, the case... | |
 | Michael Faraday - 1859 - 522 pages
...altering the flame. It is found that the wind may blow suddenly in at the cowl, yet the effect never reach the lamp. The upper, or the second, or the third,...whole of it into the room, without ever affecting the flame. The ventilating flue is, in fact, a tube which, as regards the lamp, can carry everything up,... | |
 | Edward Nugent (C.E.) - 1868 - 294 pages
...out of the flue in the lantern, but a portion of the air pa lantern by these apertures into the flue lantern itself is in some degree ventilated. The important...whole of it into the room without ever affecting the lump. The ventilating flue is in fact a tube which, as regards the lamp, can carry everything up, but... | |
 | William Henry Davenport Adams - 1870 - 336 pages
...or even the fourth portion of the ventilating flue might be entirely closed, yet without influencing the flame. The cone junctions in no way interfere...can carry everything up but conveys nothing down. The British lighthouses, as I have stated, are under the charge of either two or three keepers, whose... | |
 | William Henry Davenport Adams - 1870 - 366 pages
...portion of the ventilating flue might be entirely closed, yet without influencing the flame. Thecone junctions in no way interfere with the tube in carrying...can carry everything up but conveys nothing down. The British lighthouses, as I have stated, are under the charge of either two or three keepers, whose... | |
 | William Henry Davenport Adams - 1878 - 370 pages
...ventilating flue might be entirely closed, yet without influencing the flame. Thecone junctionsin noway interfere with the tube in carrying up all the products...can carry everything up but conveys nothing down. The British lighthouses, as I have stated, are under the charge of either two or three keepers, whose... | |
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... should not have any effect in disturbing or altering the flame. It is found that the wind may blow suddenly in at the cowl, and the effect never reaches the lamp. The upper, or the second, or the third, or even the fourth portion of the ventilating... 