. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . changes in fire-box temperature cause asudden and continuous contraction and expansion ofthe flues and sheets. This contraction and expansioncause the sheets to crack and the flues to leak. CARE OF THE BOILER. Water should never be put on a sheet that hasbecome red hot, as the water is likely to crack thesheet and cause it to be forced off the stay-bolts. Ifmud or scales accumulate on the crown-sheet, thoseparts of the sheet where the mud or scales are locatedw
. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . changes in fire-box temperature cause asudden and continuous contraction and expansion ofthe flues and sheets. This contraction and expansioncause the sheets to crack and the flues to leak. CARE OF THE BOILER. Water should never be put on a sheet that hasbecome red hot, as the water is likely to crack thesheet and cause it to be forced off the stay-bolts. Ifmud or scales accumulate on the crown-sheet, thoseparts of the sheet where the mud or scales are locatedwill become overheated. The narrow space between the inside and outsideof the fire-box is known as the leg of the boiler (n, ). The most important features insuring the safetyof the boiler are frequent inspections, replacing thebroken stay-bolts (Fig. 10), and washing out the length of time that a boiler should be run beforebeing washed out depends largely on the condition ofthe water and the class of service. The average miles DRAFT APPLIANCES. 29 run between washouts are usually from six hundred toone The boiler check is usually placed near the frontend of the boiler to introduce the water at as great adistance as possible from the fire-box. The advantagethus gained is that it permits the water to becomeheated before coming in contact with the fire-box, andalso tends to bring about a better circulation of theboiler. DRAFT APPLIANCES. The draft appliances of a locomotive (Fig. 11) in-clude diaphragm (1),petticoat-pipe (2), sleeve (3), net-ting (4), exhaust nozzle (5) and exhaust (6). The diaphragm is a sheet of steel fastened at anangle just above the top of the boiler tubes, whichdeflects the smoke and cinders towards the bottom ofthe smoke-box. Attached to the stationary portion ofthe diaphragm is another section, hinged in modern 3Q DRAFT APPLIANCES.
Size: 1528px × 1635px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthornationalcorrespondenc, bookcentury1900, bookdecade1900
