. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . se in that condition it pro-vides the best surface for ignition andprovides the proper openings for emis-sion and mixture of the fuel gases. shake, and when should they be shaken?A.—To break up the clinkers and ashesthat close up the grate openings and re-strict the supply of air. The gratesshould be shaken very lightly as soonas the fire shows that air is too muchrestricted. With some kinds of coal thegrates must be moved frequently to pre-vent them from sticking, a conditioncaused by fused
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . se in that condition it pro-vides the best surface for ignition andprovides the proper openings for emis-sion and mixture of the fuel gases. shake, and when should they be shaken?A.—To break up the clinkers and ashesthat close up the grate openings and re-strict the supply of air. The gratesshould be shaken very lightly as soonas the fire shows that air is too muchrestricted. With some kinds of coal thegrates must be moved frequently to pre-vent them from sticking, a conditioncaused by fused clinker. 67. Why should grates not be shakentoo frequently? A.—Because good fuel would be wast-ed and the ash pan prematurely filkdwith danger of burning the grates. 68. Is it a firemans duty to avoidfilling up the ash pan too full? A.—Certainly it is. 69. Is it permissible to dump ashes orfire over road crossings, switches oraround stations? A.—It is not. 70. Is it objectionable to fill the tankstoo full or spill water at stand pipes orwater tanks? A.—It is a very objectionable and dan-. LIME ROCK , 0-4^ ENGINE ON A TEMPORARY TRESTLE. 62. When and why should you wet thecoal in the tender? A.—As soon as the supply of coalhas been put upon the tender. Thewetting is done to keep down the also tends to keep the mass of finecoal together and prevents it from beingdrawn into the tubes by the suction ofthe exhaust. 63. Should coal be allowed to lie onthe deck and fall out of the gangway? A.—Certainly not. 64. Do you understand that the coalused on the locomotive is property andrepresents money invested by the com-pany? A.—I do. 65. What are the advantages of a largegrate surface? A.—It permits of slower combustionthan would be practicable with smallergrate surface and slow combustion underproper restrictions promotes economy offuel. 66. Why are the grates made to gerous practice, and should be avoided. 71. What are the duties of a firemanon arriving
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