. American engineer and railroad journal . FIG. 49.—THE MOTOR DBIVING ARRANGEMENT FOB THE 72-INCH POND BORING MILL, SHOWING USE OF THREE GEAR RUNS AND INTERLOCKING LEVERS FOB OPERATING THEM. 19-J AMERICAN ENGINEER AND RAILROAD JOURNAL. controller. This gives the tables a range of speedsof from to 35 rev. per min. The controller is mounted onthe front side of the boring-spindle frame, as shown, whichmakes it very convenient for the operator. The small crane for placing wheels and work upon the table,which forms a part of this tool, was formerly operated by apulley which was drive
. American engineer and railroad journal . FIG. 49.—THE MOTOR DBIVING ARRANGEMENT FOB THE 72-INCH POND BORING MILL, SHOWING USE OF THREE GEAR RUNS AND INTERLOCKING LEVERS FOB OPERATING THEM. 19-J AMERICAN ENGINEER AND RAILROAD JOURNAL. controller. This gives the tables a range of speedsof from to 35 rev. per min. The controller is mounted onthe front side of the boring-spindle frame, as shown, whichmakes it very convenient for the operator. The small crane for placing wheels and work upon the table,which forms a part of this tool, was formerly operated by apulley which was driven from the countershaft; this pulleyran continuously and the crane was operated by the throw-ing in or out of a clutch. Part of this clutch was cast in as apari of the pulley, so that in order to preserve this combination.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
