. American engineer and railroad journal . connection with theBetts heavy boring and turning mill. One of these machinesswings 20 ft. 3 in. in diameter and takes work I2 ft. high underthe tools. The tool spindles have a travel of 72 inches, andthe total weight of the machine is 373,000 lbs. In this verymassive design ease of operation has been very largely securedthrough liberal use of the friction clutches above double clutches are used in the nest of gears on either sideof the machine, the design being such that the face plate ortable, instead of being driven by one pinion, is
. American engineer and railroad journal . connection with theBetts heavy boring and turning mill. One of these machinesswings 20 ft. 3 in. in diameter and takes work I2 ft. high underthe tools. The tool spindles have a travel of 72 inches, andthe total weight of the machine is 373,000 lbs. In this verymassive design ease of operation has been very largely securedthrough liberal use of the friction clutches above double clutches are used in the nest of gears on either sideof the machine, the design being such that the face plate ortable, instead of being driven by one pinion, is driven by twopinions, one on each side. The feature of driving from bothsides of the table tends toward smooth running and increasedstiffness under cuts that are not entirely continuous. The New-ton 30 in. horizontal milling machine and the Newton I-beam,cold saw cutting off machine afford additional instances of howthis small compact clutch is used by machine tool builders aspart of some of the best high grade machine tools built. It is.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
