GB1013067A - Ballooning limiter for spinning or twisting machines - Google Patents

Abstract

1,013,067. Balloon limiter. K. NIMTZ. May 21, 1964 [May 21, 1963; May 4, 1964], No. 20958/64. Heading D1D. A balloon limiter comprises, see Fig. 3, a sheet of abrasion resistant foil 7 e.g. of metal, plastic coated paper, cardboard, fabric or metal or a plastics material such as tetrafluoroethylene or monochloro-trifluoroethylene possibly blended with PVC. polyamides, polyurethane, urea- or melamineformaldehyde-resins and reinforcements such as fabric, paper or glass fibre, said foil being secured at the top and/or the bottom to at least one annular member 8 or polygonal supporting frame member mounted on a spinning or twisting machine frame e.g. by a bracket 9. In Fig. 3 the member 8 has a folded over flange into which the upper edge of the sheet 7, folded over a cord or band 10, is inserted. The member 8 has a vertical slit therein which is arranged to coincide with the slit in balloon limiter formed by the edges of sheet 7 so that a threading up slit is provided. The annular members, which may be provided at both the top and the bottom of sheet 7 and be joined by vertical members, may take a variety of forms e.g.:- the annular member may have a U-shaped fold into which the edge of the sheet slips or it may comprise two elements, an inner, grooved annulus and an outer, split, spring between which the foil edge is clamped; alternatively the annular member comprises inner and outer elements clamped to the edge of the foil by nuts and bolts passing therebetween or grooved inner and outer elements urged together by a split ring. The balloon limiter may be cylindrical, barrel shaped, tapering or as shown in Fig. 12 polygonal. In Fig. 12 the annular member 46 to which the bottom edge of sheet 7 is attached is polygonal and is provided with a flow 38, 47, the fixed part 38 of which is attached to the spindle rail 29 of a two for one twisting device. Hinges 31 are provided in the member 46 so that portions of the balloon limiter, together with the floor portions 47 may be hinged back to provide access to the interior. Fixed, vertical bars 44 are provided adjacent the hinge axes to prevent kinking of the sheet 7 in opening. In Fig. 14 the foil is fitted within a frame formed by upper and lower annular members 48, 49 and vertical members 50 two of which form a vertical slit 52. The ends of the foil are led outwardly through slit 52 and clamped against the member 50 by bars 53 urged thereagainst by spring urged levers 54. In a further form the adjacent edges of the sheet 7 are overlapped, the step formed by the inner edge facing in the direction of the balloon travel.