. Electric railway journal . FIG. 3—TURRET; FIG. 4—SPINDLE BONNET. FIGS. 5 AND 6 OLD AND NEW BUSHING METHODS Formerly bushings were forced into place by a hand-operated press appearing in Fig. 5. It was necessaryto start a bushing into the wheel bores from the bench,and in setting them home at least two strong pulls onthe 3-ft. 6-in. lever were required. Results were cor-respondingly unsatisfactory. Fig. 6 illustrates the pres-ent method, which employs a home-made pneumaticpress having a cylinder 7x/4 in. in diameter with a The cylinder is attached by nine %-in. capscrews to a hea
. Electric railway journal . FIG. 3—TURRET; FIG. 4—SPINDLE BONNET. FIGS. 5 AND 6 OLD AND NEW BUSHING METHODS Formerly bushings were forced into place by a hand-operated press appearing in Fig. 5. It was necessaryto start a bushing into the wheel bores from the bench,and in setting them home at least two strong pulls onthe 3-ft. 6-in. lever were required. Results were cor-respondingly unsatisfactory. Fig. 6 illustrates the pres-ent method, which employs a home-made pneumaticpress having a cylinder 7x/4 in. in diameter with a The cylinder is attached by nine %-in. capscrews to a headplate carried on four lV^-in. cold rolledsteel columns. Above the cylinder, a chamber is pro-vided containing a spring head against which the pistondrives in its upward stroke, the motion of the pistonbeing controlled by a three-way valve in the air piping. Air is supplied at a pressure of 85 lb. per square bushings, of the Bound Brook type, are of % diameter, x/2-in. inside diameter and are 1% Graphite is used for lubrication. The
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