A Practical Treatise on the Construction of Chimneys ...Winchester and Varnham, 1826 - 58 pagine |
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A Practical Treatise on the Construction of Chimneys ... John William Hiort Visualizzazione completa - 1826 |
A Practical Treatise on the Construction of Chimneys John William Hiort Anteprima non disponibile - 2019 |
A Practical Treatise on the Construction of Chimneys ...: With an Accurate ... John William Hiort Anteprima non disponibile - 2015 |
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adjoining air-chambers angles applied architects ascending bricklayer bricks in thickness bricks numbered builder built centre charge in day-work chim chimney-bar circular bricks circular flue cleansing common brick-work constructing Chimneys CONSTRUCTION OF CHIMNEYS Corbel course of bricks course of circular current of air cylinder defects Depôt diameters of flues ditto ditto duced entire circle fire fire-place flue of fourteen flue of ten flue or tunnel foot running foregoing fourteen inches free ascent front half inches height hexagon horizontally inches diameter inches in dia inches in diameter invention lofty shafts material meter mode of building mode of constructing mortar joints mouth neys obstructed operative bricklayer outlet pargetting patent bricks patent flues plate pointing trowel principle rabbet rection require roof semi-circular back shewn by fig Soffit soot spandrills stone base stone cap thirteenth course throat tion trammel Treatise twelve inches vide Supplement warm-air chambers WINCHESTER AND VARNHAM wind workmen
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Pagina 9 - ... likely to happen,) for such an accumulation of soot as common chimneys are liable to, cannot take place within these tunnels, there being no angles in which the soot can lodge, the draught of air through them being much stronger, and the necessity for cleansing them rendered less frequent, by vitrifying the insides of the bricks, to prevent adhesion ; nevertheless, the operation of cleansing may with facility be performed when needful, without the aid of climbing boys, all sharp angular turns,...
Pagina 9 - From the construction of these chimneys, and the nature of the materials of which they consist, no danger need be apprehended should the soot ignite (an accident not likely to happen), for such an accumulation of soot as common chimneys are liable to cannot take place within these flues, there being no angles within which it can lodge, the draught of air being much stronger through them, and the necessity for cleansing them may be rendered less frequent by vitrifying...
Pagina 10 - ... can lodge, the draught of air through them being much stronger, and the necessity for cleansing them rendered less frequent, by vitrifying the insides of the bricks, to prevent adhesion ; nevertheless, the operation of cleansing may with facility be performed when needful, without the aid of climbing boys, all sharp angular turns, and other impediments, which have hitherto prevented the use of machinery, being totally avoided.
Pagina 8 - ... adapted to any required curvature. To make the flue straight, it will be observed that the thick ends of one course of bricks are placed alternately upon the thin ends of the next course ; and in order to make curves, the thick ends are placed together on one side, and the thin ends on the opposite side. The circular flue commences at the throat of the chimney below the usual line of the chimney bar, and immediately over the fire. From below the chimney -bar the flue is continued. downward to...
Pagina 8 - ... throat of the chimney is made to contain no more air than can be heated by the fuel ordinarily consumed, nor can the air of the room or chamber connect with that of the chimney without passing through or coming in contact with the fire; and should the upper part of the flue admit of a counter-current of descending colder air, it must, at a certain point, become rarefied, and return with the centre spiral column of ascending smoke and heated air. The flues in question are particularly applicable...
Pagina 8 - ... may be altogether avoided. Thus the throat of the chimney is made to contain no more air than can be heated by the fuel ordinarily consumed, nor can the air of the room or chamber connect with that of the chimney without passing through or coming in contact with the fire; and should the upper part of the flue admit of a counter-current of descending colder air, it must, at a certain point, become rarefied, and return with the centre spiral column of ascending smoke and heated air. The flues in...
Pagina 9 - In building these flues or tunnels, no other material is used than the patentee's newly-invented bricks, and the cement by which they are united. These bricks require no labour in cutting, being made on systematic principles, and when applied to the purposes intended, the joints, both horizontally and vertically, are as those of an arch, and therefore capable of resisting great external pressure; and the rim of the flue being in two thicknesses, the interior is essentially protected from any injury...
Pagina 7 - The air within these cavities is, by the heat of any one firet rendered sufficiently warm to prevent condensation within all the flues contained in the same stack. These flues, from the peculiar form of the bricks of which they are constructed, may be carried to any extent, either perpendicularly or...
Pagina 7 - Each flue or tunnel is surrounded in every direction, from bottom to top, by cavities or warm-air chambers cc, commencing at the back of every fire place, and connected with each other. The air confined within these chambers, by the heat of any one fire, is said to be rendered sufficiently warm to prevent condensation within all the flues contained in the same stack of chimneys. These flues or tunnels are...
Pagina 9 - ... other material is used than the patentee's newly-invented bricks, and the cement by which they are united. These bricks require no labour in cutting, being made on systematic principles, and when applied to the purposes intended, the joints, both horizontally and vertically, are as those of an arch, and therefore capable of resisting great external pressure; and the rim of the flue being in two thicknesses, the interior is essentially protected from any injury to which the outside facing of the...