The boys' book of engine-building; . called a Bunsen burner because itwas invented by Bunsen, a great German sci-entist who lived in the 19th century. It is formed of a tube the lower end of whichis connected to a supply of gas and the upper endis left open; holes are drilled in the pipe near thelower end and, when the gas is lit at the upperend, air is drawn into the pipe where it mixeswith the gas and this makes a hot flame. All you have to do to make a Bunsen burnerfor the igniter is to get a /4-inch iron pipe 2V2inches long, thread one end of it and bend theother end over about 1 inch; dri
The boys' book of engine-building; . called a Bunsen burner because itwas invented by Bunsen, a great German sci-entist who lived in the 19th century. It is formed of a tube the lower end of whichis connected to a supply of gas and the upper endis left open; holes are drilled in the pipe near thelower end and, when the gas is lit at the upperend, air is drawn into the pipe where it mixeswith the gas and this makes a hot flame. All you have to do to make a Bunsen burnerfor the igniter is to get a /4-inch iron pipe 2V2inches long, thread one end of it and bend theother end over about 1 inch; drill a %-inch holeclear through the pipe just above the bend and A V&H. P. Gas Engine 227 fit a tin, or a brass, ring % inch high and whichalso has a pair of holes drilled in it, over thepipe where the air holes are. By turning thering around, the air holes are opened or closedand hence the amount of air can be regulated. Screw the Bunsen burner pipe into the ironpipe of the igniter and all of your fine work on theengine is CAM LUG- THE CAM THE B Em fNO Fig. 76. The Cam and Camshaft Bearing The Camshaft Bearings.—Make two patternsas shown at A in Fig. 76 for the bearings forthe camshaft and have the base of one % inchthick and the base of the other % inch thick; thereason one must be made thicker than the otheris because one is screwed to the front end ofthe cylinder which is smaller all around by Vs 228 The Boys Book of Engine-Building inch than the cap to which the other bearing isscrewed. The base of each bearing is % inchlong and each must be curved to fit the cylinder. Glue a lug on the rounded side of each base V±inch thick, Yie inch wide and %e inch long anddrill a % 6-inch hole through the end. After thepatterns are cast, screw the one with the thinnestbase to the extreme end of the cap on the cylinderand screw the other bearing to the front end ofthe cylinder as shown in the top view Fig. 74and in the perspective drawing Fig. 79, be sureto have the holes in a s
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Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjectsteamengines
