The boys' book of engine-building; . ong to one edge at each end for feet sothat the castings can be screwed down to thebed-plate. The Crank.—From a piece of wood V2 inchthick and 1 inch long cut out a crank as shownat H. Make one end V2 inch wide, the other endV± inch wide and round off both ends. The fin-ished metal crank is used to connect the con-necting rod to the crankshaft. The Eccentric.—For this pattern cut out a disk% inch thick and % inch in diameter as shownat I. The Flywheel.—You can buy an iron flywheelin the rough with a %-inch face and 5 inches indiameter for 25 cents. If you w
The boys' book of engine-building; . ong to one edge at each end for feet sothat the castings can be screwed down to thebed-plate. The Crank.—From a piece of wood V2 inchthick and 1 inch long cut out a crank as shownat H. Make one end V2 inch wide, the other endV± inch wide and round off both ends. The fin-ished metal crank is used to connect the con-necting rod to the crankshaft. The Eccentric.—For this pattern cut out a disk% inch thick and % inch in diameter as shownat I. The Flywheel.—You can buy an iron flywheelin the rough with a %-inch face and 5 inches indiameter for 25 cents. If you want to make a pattern and have itcast, so much the better, but you must expect to A V24-H. P. Horizontal Steam Engine Ji spend a lot of time on it. Make it with sixspokes and saw it out with your scroll saw. The Pillow Blocks.—These are to support thecrankshaft and to provide the bearings for block has a cover as shown at J. To make a pattern saw out a block of wood V2inch wide, 1 inch high and 1% inches long to the. Fig. 33 A. Top View of the Engine with Cylinder and SteamChest in Cross Section shape shown at J. Have the base % inch thickand the bearing %6 inch thick, V2 inch wide and %inch long and make the cover the same size andcast them separately. The Bed Plate.—This is the plate to which thecylinder and other parts of the engine are boltedand it should be cast in iron. Make a frame of %-inch stuff, 1 inch deep, 3inches wide and 9% inches long and put a top onit Vs inch thick. Cut out six blocks /4 inch thick 72 The Boys Book of Engine-Building and % inch square and glue one to each cornerof the bed plate at the ends and one to each sidein the middle. These are to permit the bed plateto be bolted to the bed. Moulding the Parts in Metal.—When all ofthe patterns are finished, take them to a foiindryand have them cast in iron, or, better, in brass. As the amount of metal in the castings is smallthe cost will be about the same for either. Onthe whole bras
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Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjectsteamengines
