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In a cluster mill having independently adjustable eccentrics on each saddle on at least one backing shaft to adjust the roll gap in line with each saddle, means to adjust the eccentrics in synchronism to produce a tapered roll gap and separate means to adjust the eccentrics in synchronism to produce

In a cluster mill having independently adjustable eccentrics on each saddle on at least one backing shaft to adjust the roll gap in line with each saddle, means to adjust the eccentrics in synchronism to produce a tapered roll gap and separate means to adjust the eccentrics in synchronism to produce a crowned roll gap, and, in combination, means to produce a roll gap with a composite crowned and tapered form.

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In a cluster mill having upper and lower backing shafts and a number of rack and gear driven saddles on at least one of the backing shafts to adjust the roll gap in line with each saddle, a drive system consisting of a number of eccentrics being fixed in phase on a common shaft, with the several ecc

In a cluster mill having upper and lower backing shafts and a number of rack and gear driven saddles on at least one of the backing shafts to adjust the roll gap in line with each saddle, a drive system consisting of a number of eccentrics being fixed in phase on a common shaft, with the several eccentrics having different eccentricities, each eccentric being linked to one of said racks by means of a connecting link, means for rotating said shaft in either direction from a neutral position whereby to produce a parallel roll gap in said neutral position, a positive crown roll gap in one direction, or a negative crown roll gap in the other direction.