The boys' book of engine-building; . a wooden pattern first, makinga mould of plaster parts and pouring in somemelted type An easier way is to buy onealready cast. The Engine Bed.—This is a block of wood 1inch thick, 2Y2 inches wide and 5 inches long onwhich to mount the engine; sandpaper it smoothand give it a coat of red paint. Cut out a frame of a piece of thick sheet brass,or heavy tin will do, 4 inches square to the shapeshown in Fig. 26. Drill a %2-inch hole in thecenter of the circles marked inlet port and ex-haust port and in each of those marked bearing;also drill a %-inch hol
The boys' book of engine-building; . a wooden pattern first, makinga mould of plaster parts and pouring in somemelted type An easier way is to buy onealready cast. The Engine Bed.—This is a block of wood 1inch thick, 2Y2 inches wide and 5 inches long onwhich to mount the engine; sandpaper it smoothand give it a coat of red paint. Cut out a frame of a piece of thick sheet brass,or heavy tin will do, 4 inches square to the shapeshown in Fig. 26. Drill a %2-inch hole in thecenter of the circles marked inlet port and ex-haust port and in each of those marked bearing;also drill a %-inch hole in the circle marked cyl-inder pivot and in the screw hole circles. Now bend up the sides of the tin or brass onthe dotted lines to form the frame and solder apiece of brass pipe Vs inch in diameter and 6 1 You can use lead, but it shrinks on cooling. A Simple Piston Steam Engine 53 inches long over the inlet port on the inside ofthe valve plate. Assembling the Engine.—You have nowreached the last and most interesting stage of. Fig. 26. The Engine Frame your work, the assembling of the parts. Beginby screwing the frame to the bed of wood andhave the valve plate and bearing on the side withit flush, that is even, with one of the long edgesof the bed. 54 The Boys Book of Engine-Building Next slip the crankshaft through the bearingsof the frame and then fit the flywheel and pulley-to the other end and, if these are made of metal,solder them on to the end of the shaft. Slip thecrank pin through the hole in the end of the pis-ton rod; put the cylinder pivot through the pivot
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Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjectsteamengines
