. American engineer and railroad journal . that full tra-verse is obtained without resetting, regardless of its is journaled in long taper bearings of phosphor bronzelocated at each end of the saddle, adjustable from the outside,and is driven by two large spline keys fitted into a sleeve onwhich the driving gear is mounted. Ten speed changes and eight feeds are available, besides fourspeeds for milling. An interesting feature is that all the feedsare reversible and any desired change can be instantly effectedThe motor mounted on top of the column, transmits powerthrough rawhide gear
. American engineer and railroad journal . that full tra-verse is obtained without resetting, regardless of its is journaled in long taper bearings of phosphor bronzelocated at each end of the saddle, adjustable from the outside,and is driven by two large spline keys fitted into a sleeve onwhich the driving gear is mounted. Ten speed changes and eight feeds are available, besides fourspeeds for milling. An interesting feature is that all the feedsare reversible and any desired change can be instantly effectedThe motor mounted on top of the column, transmits powerthrough rawhide gearing to the vertical splined shaft, whichdrives the gearing enclosed in the saddle. A large number ofunnecessary gears are eliminated by this arrangement, resultingin a high transmission efficiency. An attractive feature of the entire machine is the fact thatit is self contained and motor driven and can therefore be lo-cated anywhere without regard to line sliafting. Further, it isvery compact and simple, all the mechanism being encased in. HORIZONTAL BORING, DRILLING, TAPPING -\ND MILLING MACHINE—ROCHESTER BORING MACHINE CO. provided with the usual longitudinal T slots and is rigidly at-tached to the heavy and firmly braced slide base by means ofheavy bolts. Graduated scales with vernier readings are provided for locat-ing the saddle and main column in th-j desired positions, andthe outboard support and columns are also furnished withscales giving the same readings. In addition to this, the spindlehas a micrometer reading attachment for gauging depths inboring, drilling or milling. The outboard bearing is made withthe same vertical and horizontal traverse as the main column,and is provided with suitable bushings for supporting boringbars. It is traversed longitudinally on the base by means ofa rack and pinion remaining parallel at all times with the mamslide base. The head and outboard column, as well as the maincolumn and its saddle, are traversed by means of concentrichand
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
