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" When the chimney is put together, the upper end of the bottom piece is inserted about | an inch into the cone of the next piece above, and fixed there by three ties or pins, so that the two pieces are firmly held together ; but there is still plenty of... "
Optics: Light and Sight Theoretically and Practically Considered, with Their ... - Page 219
by Edward Nugent - 1870 - 268 pages
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Iron: An Illustrated Weekly Journal for Iron and Steel ..., Volume 39

Perry Fairfax Nursey - 1843
...lowest part. When the chimney is put together, the upper end of the bottom piece is inserted about £ an inch into the cone of the next piece above, and...is adjusted so that the lamp-chimney enters about -.} an inch into the lower cone, VENTILATION OF LIGHTHOUSE LAMPS. 237 and the top of the ventilating...
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The London journal of arts and sciences (and repertory of patent inventions ...

William Newton - 1844
...lowest part. When the chimney is put together, the upper end of the bottom piece is inserted about j- an inch into the cone of the next piece above, and...is adjusted, so that the lamp-chimney enters about -J- an inch into the lower cone, and the top of the ventilating chimney enters into the cowl or head...
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Minutes of Proceedings of the Institution of Civil Engineers, Volume 2

Institution of Civil Engineers (Great Britain) - 1844 - 488 pages
...lowest part. When the chimney is put together, the upper end of the bottom piece is inserted about \ an inch into the cone of the next piece above, and...is adjusted, so that the lamp-chimney enters about J an inch into the lower cone, and the top of the ventilating chimney enters into the cowl or head...
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Newton's London Journal of Arts and Sciences: Being a Record of ..., Volume 24

1844
...lowest part. When the chimney is put together, the upper end of the bottom piece is inserted about | an inch into the cone of the next piece above, and...is adjusted, so that the lamp-chimney enters about £ an inch into the lower cone, and the top of the ventilating chimney enters into the cowl or head...
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The Mechanic's Magazine, Museum, Register, Journal and Gazette, Volume 39

1843
...lowest part. When the chimney is put together, the upper end of the bottom piece is inserted about .' an inch into the cone of the next piece above, and...is adjusted so that the lamp-chimney enters about 4 an inch into the lower 236 VENTILATION OF LIGHTHOUSE LAMPS. and the top of the ventilating chimney...
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An Encyclopædia of Civil Engineering, Historical, Theoretical ..., Volume 1

Edward Cresy - 1847 - 1039 pages
...these pipes are put together to form the chimney, the upper end of the bottom piece is inserted about ! inch into the cone of the next piece above, and fixed there by three ties or pins, leaving at the same time plenty of air-way. After the ventilating chimney is thus completed, it is...
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Experimental Researches in Chemistry and Physics

Michael Faraday - 1859 - 522 pages
...lowest part. When the chimney is put together, the upper end of the bottom piece is inserted about £ an inch into the cone of the next piece above, and...firmly held together ; but there is still plenty of air- way, from the surrounding atmosphere into the chimney between them. The same arrangement holds...
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Lighthouses and Lightships: A Descriptive and Historical Account of Their ...

William Henry Davenport Adams - 1870 - 336 pages
...each for about an inch and a half being opened out into a conical form, about five inches and a half in diameter at the lowest part. When the chimney is...the ventilating chimney is fixed in its place, it is so adjusted that the lamp chimney enters about half an inch into the lower cone, and the top of the...
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