The Locomotive Engine: Including a Description of Its Structure, Rules for ...
The Locomotive Engine: Including a Description of Its Structure, Rules for ...
Zerah Colburn
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Diam. of follower or cover, 14^ in. ; diam. of outside rings, before cutting open, 15^ in. ; thickness of piston, 4f in. ; thickness o( follower, | in. ; thickness of outside rings, f in. ; depth of do. 1^ in. ; inside ring of cast iron, | thick. Four screws to secure cover, each one inch in diameter, 3 in. under head, and having heads 1^ in. square. Each screw is 5f in. from center of piston. Four springs to set out packing, each 6 in. long, 3 in. wide, ^ in. tbiek at thickest part, and having... a bend or deflection of f m. ; 4 56 THE LOCOMOTITX SNOINB. Screws to set ont packing, f in. diam. Key to secure piston rod, If bj ^^. Thickness of iron around rod, If in. ; diam. of body of iron penetrated by screws to secure cover, is 2 in., and is connected to the hub of the piston head by a bridge of iron | in. thick. Winans' 17-inch piston has six screws to secure tbe cover, and each spring which is set out by the packing screws, presses at each end against the center of a smaller spring, thus making 24 bearings against the packing rings.
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