. The railroad and engineering journal . eyes, F F, on the ends fordrawing them out when the fire must be removed. plates III and IV, and also in figs. 354 and 355. In the latterfigures A A are the exhaust orifices or nozzles ; B is the chim-ney ; C and D are deflectors or plates in front of the deflector D has a sliding door, C, which is moved up anddown by the shaft S, which has arms, H and /, the former con-nected to the door by rods, / J, and the latter by another rod,A A, with the cab. E F is wire netting which has an openingor man hole,*y^, also covered with netting, which can
. The railroad and engineering journal . eyes, F F, on the ends fordrawing them out when the fire must be removed. plates III and IV, and also in figs. 354 and 355. In the latterfigures A A are the exhaust orifices or nozzles ; B is the chim-ney ; C and D are deflectors or plates in front of the deflector D has a sliding door, C, which is moved up anddown by the shaft S, which has arms, H and /, the former con-nected to the door by rods, / J, and the latter by another rod,A A, with the cab. E F is wire netting which has an openingor man hole,*y^, also covered with netting, which can be re-moved to give access to the exhaust nozzles. The purpose of the movable door or deflector, G. is to regu-late the draft, the direction of which is indicated by the arrows. Question 587. How does an extended s?noke-box help to arrestsparks and cinders ? Answer. By means of the deflectors the sparks are thrownforward into the extension of the smoke-box where the currentof air and gases is not violent. As the wire netting at the same. Fig- 354 Question 5S4. Is it important to admit air above anant/iraeitecoal fire to facilitate combustion ? Answer. It is not so important as it is in bituminous coal,but if the layer of anthracite in the grates is very thick, it willbe impossible to get enough air through the coal to convert allthe carbon into carbonic , and the carbon and oxygenwill therefore unite so as to form carbonic oxide. If air is ad-mitted above the fire, as has already been explained, anotherequivalent cf oxygen will unite with the carbonic oxide, and asecond combustion will then take place above the fire, and thecarbonic oxide will thus be converted into carbonic dioxide. If,under these circumstances, no air was admitted above the fire,the second combustion would not occur, and all the heat pro-duced thereby would be lost. Question 5S5. In what way is combustion influenced by thearrangejnents in the smoke-box of the locomolije ? Answer. The draft is dependen
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
