GB616067A - Improvements relating to wringing machines, mangles, calendering presses and the like - Google Patents

Abstract

616,067. Wringers. GARRARD, C. G. Aug. 23, 1946, Nos. 25254/46 and 10703/47. [Class 138(ii)] A wringing or like machine comprises a roller 5 rotatably supported in a bearing which is fixed relatively to the machine frame, and a co-operating roller 4 rotatably supported by a bearing which is movable relatively to the fixed bearing about an axis parallel with the axis of the fixed bearing, the co-operating roller being also movable about an axis substantially perpendicular to the plane containing the axes of the two rollers. The lower roller 5, Figs. 1 and 2, is carried on a foundation tube 6 from which a rod 7 projects at one end into a sleeve 8 co-operating with roller bearings 9, 10 in a casting 2. The upper roller 4, which is driven by frictional engagement with the lower roller, is rotatably supported in a casting 1. The two castings 1, 2 are mounted for relative pivotal movement about an axis parallel with the bearings 9, 10 of the lower roller by means of a hinge comprising a bracket 24 on the upper casting 1, a hinge pin 25, Fig. 3, and co-operating lugs 26, 27 on the lower casting 2. The bracket 24 also carries a second bearing in the form of a tube 28 which is disposed at right angles to the axis of the hinge pin 25 and fits into the upper casting 1. The rollers 4, 5 are pressed together by a compression spring 30, which is disposed between projecting members 29, 31 on the two castings 1, 2, and is adapted to be adjusted by a handwheel 35 acting through a screwed spindle 33 and nut 34 so as to vary the pressure between the rollers 4, 5; the spring 30 may be arranged in a two-part telescopic casing 36, 37. The lower roller 5 is rotated by means of a handle 13 which fits over a projecting portion 15 of the sleeve 8 and is secured thereto by a pin 16 and screw 18. The outer end of the upper roller 4 is covered by a cap 20. In the modification shown in Figs. 4 and 5, the upper casting 38 carries a bracket 45 which is pivotally mounted parallel with the upper roller 42 on bearing tubes 46, 47 fitted in lugs 48, 49, on the casting 38. An extension 50 on the bracket 45 is pivotally mounted on a bearing 51 which projects at right angles from the lower casting 39. A second and parallel bearing 54 on the casting 39 provides a pivot for a lever 53, one arm 56 of which co-operates with the lower end of the spring 44 for adjusting pressure between the rollers, and the other arm 59 engages the lower end of a pin 61 which seats at its upper end in a recess 62 in the underside of the upper casting 38. Compression of the spring 44 by means of the handle 35 causes the upper casting 38 to pivot about the bracket 45 so as to urge the rollers 42, 43 into contact. Simultaneously, the arm 56 of lever 53 will be depressed and the arm 59 raised, with the result that the casting 38 pivots about the bearing 51 and increases the pressure on the remote end of the roller. The driving handle 63 has a flattened end passing through an aperture in the lower roller tube and is locked therein by a screw cap 64; it may be of such dimensions that it may be accommodated within the lower roller tube. If desired, each roller may be supported at both ends by bearings in frame members, each of the latter being mounted at one end only in the machine frame. Alternatively, the rollers may be rotatably mounted on spindles which extend axially through the rollers and are mounted cantilever fashion at one end only on the machine frame. Specification 608,509 is referred to.