Feeding Means For Round Bars

Author:  Bidle, W. S.
Source:  US Patent 2,038,204
Doc ID:  1936002
Year of Publication:  1936
Abstract:  
This invention relates to treatment of hot-rolled bar steel, as received from a rolling mill, to produce therefrom a bar stock suitable for feeding to machine tools such as turret lathes, automatic screw machines, and the like. It is the object of this invention to produce from the hot-rolled bar, a suitable machine tool feed stock, by novel means including a cheaper method and improved apparatus therefor. Briefly the method comprises removing the scale in a novel manner by subjecting the bar stock to a blasting operation; and thereafter, by a polishing operation, removing irregularities from the surface of the stock, including both those irregularities produced by the scale and those relatively minute and uniform irregularities resulting from the blasting operation. The novelty of apparatus pertains particularly to that for performing the scale-removing blasting operation and comprises briefly means for simultaneously advancing and rotating the bar stock while subjecting it to a relatively stationary blasting stream, and including means for controling the advance of the stock, dependent upon removal of its scale.