Abstract: A core of a rotatable unit for manufacturing a coil of a flexible object and enveloping the coil to form a parcel for delivery to a user of the object. According to the invention the core comprises a number of longitudinal support elements (3) and two flat end rings (1, 2) each with a central opening (6), an inner circular support surface (7) with predetermined radius, and recesses (8) arranged in connection with the support surface (7). The end portions (9, 10) of the support elements are in engagement with the recesses (8) to fix the end rings and support elements to each other. Furthermore, the inner sides (14) of the support elements (3) coincide with the support surfaces (7) of the end rings and the end surfaces (11, 12) with the outer sides (5) of the end rings. A method is also described for manufacturing said coil, commencing with assembling said core.

Abstract: A tool for assembly on a drum to form a rotatable unit, to be placed in journalling equipment for rotation of the unit, is provided. The drum comprises a cylindrical sleeve and two end pieces and is designed to carry a coil of a flexible object, such as cable. The tool has two support and bearing elements, each with a hub, a plurality of support arms and a concentric support member for centering the drum; a connecting member having a shaft extending through the sleeve and the hubs; and an anchor for anchoring the support and bearing elements to the shaft while at the same time securing the sleeve against axial displacement in relation to the shaft. The support arms are positioned to abut the end pieces and have free ends located radially inside the outer circular edge of the end pieces so that the support arms are not in contact with the ground when the unit is resting on the ground by engagement of the end pieces of the drum with the ground.

Abstract: A disposable drum of all non-metallic material is used for coiling or uncoiling cables or other flexible objects. The drum includes a stable sleeve, two end elements, and two central plugs, the end elements either integral with the plugs or disposed over the sleeve. The central plugs cooperate with the end elements to clamp the sleeve firmly between them, a frictional engagement being provided between the plugs and sleeve. Each plug has an expansion part and a friction part, the expansion and friction parts typically being conical or curved, and having a wide variety of different specific relationships between them.

Abstract: A drum of disposable type to carry a coil of cable or line, for instance, comprising a sleeve and two circular end pieces, each of which is attached to the sleeve by an attachment mechanism at its end portions. Each end piece is provided with a concentric, cylindrical engagement and support flange on the side facing towards the sleeve, the flange having an axial length of 20-50 mm, depending on the diameter of the drum, and being arranged to be received with friction-fit into the interior of the sleeve so that the outside of the flange presses against the inside of the sleeve, the attachment mechanism being arranged within the area of the flange and adjacent end portion of the sleeve so that, in cooperation with the friction engagement of the flange itself, a stable, permanent joint is achieved.

Abstract: A tool mounts a parcel containing a coil of a cable, for instance, a sleeve for the cable, and two protective rings at the sides of the coil, the tool having two wheel-shaped side supports including one larger and one smaller circle segment having opposite dividing edges, the circle segments being capable to be coupled and locked to each other. The side supports are provided with concentric centering elements to center the sleeve, the dividing edges being provided radially outside the centering elements of the side supports for dividing the distance between the centering element and the peripheral edge element in a ratio of from 1:1 to 1:3. The dividing edge of the larger circle segment is provided at a radial distance from the center of the side support that is less than the radius of the parcel.