GB625557A - Improvements in rolling mills - Google Patents

Abstract

625,557. Rolling. ABRAMS, Ltd., S., and HARDING, C. G. Aug. 11, 1947, No. 22207. [Class 83 (iv)] A rolling-mill has a frame comprising two laterally spaced pairs of cylindrical columns rigidly mounted on a base and the bearing blocks which support the rolls are formed at their ends with semi-cylindrical recesses adapted to fit between the two columns of a pair. Pairs of plain and grooved rolls are mounted in superposed relation within a common frame so that the mill can be used for either sheets or bars. Two pairs of bolts or studs 12 pass upwardly from two elongated bosses 11 on a base 10 and surrounding each stud are upper and lower sleeves 16, 13 separated by bridge pieces 14 which extend between the studs of a pair. At their upper ends, the studs pass through a cast head member and the whole assembly is rigidly secured by nuts 19. Two bearing blocks 20, each having the form shown in Fig. 4, extend between each pair of sleeves 13, the lower two resting on the tops of the bosses 11. These blocks form the bearings for rolls 24 having a series of semi-cylindrical grooves' 25 which are kept in pressure contact by screws depending from the bridge pieces 14 into contact with the upper blocks. Two similar pairs of blocks extend between the upper sleeves 16, the lower resting on the bridge pieces 14 and the upper on springs between the upper and lower blocks. These blocks form the bearings for plain rolls 34 whose pass is adjusted by screws depending from the head 17 into contact with the upper blocks, the screws being simultaneously turned through gears 47 meshing with a common gear 48 rotatable by a tommy bar 52. All the rollers may be simultaneously rotated by means of a crank handle 41 operating through gears as shown. The teeth of gears 36 coupling the upper rolls are long enough to allow for the pass adjustment. The mill is intended more particularly for jewellers and may be used for sheet metal or for reducing a bar by introducing it to successive passes 26 between the lower rolls. The rolls 24 may be replaced by rolls with V- shaped grooves.