. American engineer and railroad journal . nt part of the boring mill can be done entirely separatefrom the massive sections of the machine. Another new featureis seen in the foot-brake, for quickly stopping the table at anydesired position. The turret head on the cross bar is five sided and set at anangle of 8 degrees, which gives it plenty of clearance for largetools. The turret slide can be swiveled at any angle up to 30degrees either side of the center, and a graduated scale with apointer is provided for accurately indicating the depth of main spindle has 16 changes of speeds and t
. American engineer and railroad journal . nt part of the boring mill can be done entirely separatefrom the massive sections of the machine. Another new featureis seen in the foot-brake, for quickly stopping the table at anydesired position. The turret head on the cross bar is five sided and set at anangle of 8 degrees, which gives it plenty of clearance for largetools. The turret slide can be swiveled at any angle up to 30degrees either side of the center, and a graduated scale with apointer is provided for accurately indicating the depth of main spindle has 16 changes of speeds and there are eight Failures.—Few fields of study are more fruitful of resultsand lead to more genuine progress than a study of the causesof failures. Such studies may be unpleasant and disagreeable,they may at times be even disheartening, but the man who wouldmake substantial advances must heed the lessons which his fail-ures teach. Faraday, who spent his life in experiment, used tosay that he learned more from his failures than he did from. SEPARATE MAIN DRIVE—OIL BOX REMOVED. his successes. And it is not difficult to see why this should beso. When an experiment 01 a construction has proved suc-cessful we are naturally most interested in the result, and donot usually spend time and thought and study over the detailswhich have led to our success. On the other hand, if our ex-periment or construction is a failure, the cause of the failure isimmediately sought for, every detail is questioned, and it is thisstudy of the details which broadens our knowledge. Quite inline with Faradays statement is the rather more homely phrase,with which you all arc doubtless familiar, and which we re-member to have seen somewhere in engineering literature, thatthe scrap heap is the place to learn.—Dr. Chas. B. Dudley,American Society for Testing Materials. * Vi. Building Up the Efficiency of a Shop.—Every bit as greatcare should be taken in getting new men and apprentices as ingetti
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
