 | 1890 - 974 Seiten
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 | 1892 - 868 Seiten
...of the air. The cage or cylinder should be made of double joinings, the gauze being folded over so as to leave no apertures. When it is cylindrical,...diameter ; for in larger cylinders the combustion of the fire -damp renders the top inconveniently hot, and a double top is always a proper . precaution,... | |
 | 1896 - 920 Seiten
...of the air. The cage or cylinder should be made of double joinings, the gauze being folded over so as to leave no aper•tures. When it is cylindrical,...diameter ; for in larger cylinders the combustion of the lire -damp renders the top inconveniently hot, and a double top is always a proper precaution,... | |
 | 1897 - 892 Seiten
...of the air. The cage or cylinder should be made of double joinings, the gauze being folded over so as to leave no apertures. When it is cylindrical,...diameter; for, in larger cylinders, the combustion of the fire-damp renders the top inconveniently hot, and a double top is always a proper precaution, fixed... | |
 | Harry Thurston Peck - 1898 - 978 Seiten
...of the air. The cage or cylinder should be made of double joinings, the gauze being folded over so as to leave no apertures. When it is cylindrical it...diameter ; for in larger cylinders the combustion of the firedamp renders the top inconveniently hot, and a double top is always a proper precaution, fixed... | |
 | 1857 - 588 Seiten
...heated wire, the thickness of the wire is not of importance. The cylinder, or cage of wire, is made of double joinings, the gauze being folded over in such a manner as to leave no apertures. It is fastened to the lamp by a screw, and fitted to the screw by a tight ring. A second top is always... | |
 | Henry Allon - 1857 - 730 Seiten
...wire, the thickness of the wire is not of importance. The cylinder, or cage of wire, is made of doable joinings, the gauze being folded over in such a manner as to leave no apertures. It is fastened to the lamp by a screw, and fitted to the screw by a tight ring. A second top is always... | |
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The cage or cylinder should be made by double joinings, the gauze being folded over so as to leave no apertures. When it is cylindrical it should not be more than two inches in diameter ; for in larger cylinders the combustion of the fire-damp renders... 
