. American engineer and railroad journal . d its simple andsubstantial construction. The column, of large proportions,is internally ribbed throughout, containsbored seats for all journal boxes, a flangefor the crank gear sleeve, has a long bear-ing surface for the ram, and the ways forthe cross rail extend from the top to the bot-tom of the column, thus making it very base extends well out in the front, and ispan-shaped with no corners to prevent the oiland chips from being easily removed. Theram is long and wide, and is internally ribbedin such a way that it is strongest at that poi
. American engineer and railroad journal . d its simple andsubstantial construction. The column, of large proportions,is internally ribbed throughout, containsbored seats for all journal boxes, a flangefor the crank gear sleeve, has a long bear-ing surface for the ram, and the ways forthe cross rail extend from the top to the bot-tom of the column, thus making it very base extends well out in the front, and ispan-shaped with no corners to prevent the oiland chips from being easily removed. Theram is long and wide, and is internally ribbedin such a way that it is strongest at that pointwhich is subjected to the most severe adjustments may easily be made while theram is in motion. It is 12 ins. wide, lias abearing in the column 37 ins. in length, andhas a maximum stroke of 26% ins. The toolhead may be swiveled to any angle, and is se-curely locked by two bolts. The down-feedscrew is provided with a micrometer collarreading to .001 in., and, if desired, may be fur- 278 AMERICAN ENGINEER AND RAILROAD SPRINGFIELD 25-IN. HEAVY DUTY CBANK SIIAPEB. nished with an automatic down and angular feed. The cross rail has a very long bearing on the column andis self-aligning, one of the ways on the column having anangular back face which the gib fits. By first tightening thescrews in this gib, after an adjustment, the rail will alwaysbe square. The telescopic elevating screw is equipped withball bearings. The table has large working surfaces on threesides. Instead of bolting it to the cross slide by means ofplaner bolts in the T slots, it has three large studs passingentirely through the top of the cross slide above the bearingon the cross rail. The cast iron is thus relieved of tensilestrains and is placed under compression, which it is muchbetter adapted to withstand. There are also two bolts at thebottom. No support is required under the box table, becauseof the enlargement of the ways on the column, the deepercross rail, the method of fastening t
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
