. American engineer and railroad journal . AN INTEEESTING AKEANGEIIENT OF CONE-PtJLLET COUNTEKSHAIT! KOB USE WITH A MOTOR.—DESIGNED BY BEAMAN & SMITH. the more efficient method. In this drive the main-drive speedbox is left off, as it is unnecessary. This tool Is also the No. 1 radial drill, equipped with a 3-h. p. variable-speed motor, built by the Triumph Electric CHAIN CONSTANT-SPEED DBIVE (STYLE D) UPON THE NO. 1KADIAL DEILL.—BICKFORD DRILL & TOOL CO. j^Co., Cincinnati, O. It is mounted on an extension of the base,and the power is transmitted to the gear box by means of two
. American engineer and railroad journal . AN INTEEESTING AKEANGEIIENT OF CONE-PtJLLET COUNTEKSHAIT! KOB USE WITH A MOTOR.—DESIGNED BY BEAMAN & SMITH. the more efficient method. In this drive the main-drive speedbox is left off, as it is unnecessary. This tool Is also the No. 1 radial drill, equipped with a 3-h. p. variable-speed motor, built by the Triumph Electric CHAIN CONSTANT-SPEED DBIVE (STYLE D) UPON THE NO. 1KADIAL DEILL.—BICKFORD DRILL & TOOL CO. j^Co., Cincinnati, O. It is mounted on an extension of the base,and the power is transmitted to the gear box by means of twospur gears and a raw-hidS pinion which, after proper adjust-ment of the number of teeth in the pinion to suit the speedof the motor with which it is to be used, will furnish a correctrange and gradation of speeds for all sizes of drills given onthe standard Bickford speed-plates. The two following engravings illustrate methods of mount-ing cone pulleys for use in connection with constant-speedindividual drives, which have been
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
