Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 773
the upper rolls. The rolls are adjusted by lining,graduating the work on the bar throughout the six passes. Guide rollers between the rollskeef) the bar in proper position for the next rolls. The rolls are a sufficient distance apartto prevent buckling. The sheet which emerges from the last pass is… … Fig. 2.—The Thomas roughing train and doubling machine. position, thus doubling the two sheets at one operation and one heat. The doubling machineis operated bv hvdraulic or steam cylinders. Two-fifths of the work of rolling the black sheets is performed at this stage, leavmg three-fifths to be…
Mechanical engineering
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