PAPER ROLL HOLDER

Abstract: By means of a holder for a roll of unwindable material, in particular a holder for paper rolls, preferably for standing a paper roll vertically on a horizontal surface, with a cylindrical holding rod (1), a base (5) and an essentially known pivotal retaining arrangement for the free end of the paper roll, the object is to provide a holder in which the roll is retained on the holder in a stable manner also when different widths of paper are used, and where the cost of manufacture can be reduced through a simple embodiment and few components. This object is realised by the retaining arrangement (2) being pivotally attached to a detachable cover (3) that moves along the axis of the holding rod and which is equipped with a cylindrical skirt (4) that likewise moves axially along the holding rod, and where the diametrical dimensions of the cover are such that during application the cover is in contact with the end surface of the paper roll currently in use, and covers it at least partially.

Description: PAPER ROLL HOLDER FTELD OF THE INVENTION The invention relates to a holder for a roll of unwindable material, in p ar ticular a holder for paper rolls, preferably for standing a paper roll vertically on a horizontal surface, with a cylindrical holding rod, a foot, and a pivotal r e taining arrangement for the free end of the paper roll. BACKGROUND OF THE INVENTION Such a holder is known for example from Swedish patent application n o . 450083, where a shaft mounted upright on a base plate and a tear-off p ar t starting from the periphery of the base plate are together able to retain th e loose end of a paper roll, and where the tear-off part also serves for tear-off o f paper from the roll. A drawback of this known holder is that it cannot be used for random-width paper rolls which are wider than the most very c ommon types. WO patent publication no. 97/28729 specifies a similar movable paper-roll holder where a tightener prevents unintended unwinding of paper. The tightener is acted upon by a force at right angles to the vertical holder shaft so that the tightener exerts a pressure against the paper roll. This force is engendered by a cord pull, a pulley and a counterweight. The drawback of this c onstruction is that it is elaborate and therefore costly. Furthermore, the roll holder can only function when placed on a horizontal surface, so that the counterweight c a n move axially under the influence of gravitational acceleration and thereby ex ert a pull on the cord. United States patent no. 4.792,102 specifies a similar paper-roll holder, comprising however both an upright shaft for the roll and a guiding means f o r the brake cover, which by virtue of suitable drilled holes is able to slide on t h e shaft and the guiding means. This embodiment is elaborate and costly to m anu facture, as it employs both machined components and components with drilled holes of varying diameters. Also for this roll holder, application is limited to holders standing on a horizontal surface, as the gravitational acceleration mu s t in this case too act upon the brake cover in an axial direction. In addition, German patent publication no. 36 13 988 specifies guidance o f the cover with a cylindrical cover holder which can be moved axially within a shaft formed as a hollow cylinder, the hollow shaft containing locking mean s for retaining the cover holder in different axial positions. This roll holder i s admittedly suited to being lifted from a worktop by only one hand during usage, but it is not provided with means for braking the rotation of the paper roll, an d also for this roll holder application is limited to holders standing on a horizontal surface, as the gravitational acceleration must in this case too act upon t h e cover and the cover holder in an axial direction. SUMMARY OF THE INVENTION The object of the invention is to provide a holder for a roll of unwindable material, in particular a holder for paper rolls, where the roll is retained on t h e holder in a stable manner also when different widths of paper are used, an d where the cost of manufacture can be reduced through a simple embodiment and few components. The object is realised according to the present invention by the retain in g arrangement being pivotally attached to a detachable cover that moves along the axis of the holding rod, and which is equipped with a cylindrical skirt that likewise moves axially along the holding rod, and where the diametrical dimen sions of the cover are such that during application the cover is in contact w ith the end surface of the paper roll currently in use, and covers it at least p ar tially. With such an embodiment a roll holder is provided which, with the r e taining arrangement, becomes applicable for all common widths of ki tc hen roll. Furthermore, the application is not limited to horizontal worktops, but ex tends for example to use at sea aboard a sailing vessel. In an advantageous embodiment the holding rod and skirt may have interrelating locking means which can be released when the paper roll is changed . In this way, possibility is provided for lifting of the roll holder with only o n e hand, thus making it easy to use. For application of the roll holder on non-horizontal surfaces it is advantageous for the pivot movement of the retaining arrangement to take place against the action of a spring. In this way, reliable and continuous retention is achieved of the loose end of the web, regardless of the orientation of the holder. It is advantageous for the holding rod to have a cross-section bounded by a circular envelope, as the locking of the cover by the skirt can be accomplished by turning both in relation to each other, as with a bayonet socket. With a view to producing a locking between holding rod and cover skirt i t may be advantageous for the rod or parts thereof to have a cross-section bounded by an elliptical envelope. Further embodiments are stated in the dependent claims. BRIEF DESCRIPTION OF THE DRAWING The embodiment is given greater clarification below with reference to t h e drawing, which shows: A perspective representation of a roll holder, in accordance with the i n vention, arranged for table use. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT According to the invention the roll holder consists of a base (5), w h i c h io supports on its top surface a perpendicular holding rod (1) composed in the p re sent embodiment of two surfaces that are at right angles to each other and that form a cross at their cross-section. Surfaces parallel with the surface of t h e base are mounted at suitable intervals, these serving to brace the two surfaces that are at right angles to each other and whose intersection forms the longitu- i5 dinal axis of the holding rod. The holding rod is normally to be terminated by a bracing surface. On top of the holding rod can be seen a cover (3) with a skirt (4), w h i c h extends some way down the rod. It is thereby ensured that the paper-roll holder can be used for paper rolls of varying width of web. To the top of the cover i s 2o attached a retaining arrangement (2), which in this embodiment consists of a curved hoop which ends in a ball and which is pivotally mounted around a horizontal axis. The skirt (4) has an internal diameter which, in the embodiment shown , corresponds to the diameter of the holding rod that has a cross-section bounded 25 by a circular envelope. The external diameter corresponds to the internal di ameter plus the thickness of the wall. The skirt is in this embodiment c on structed as a cylinder capable of accommodating the holding rod like a piston. In a advantageous embodiment it is suggested that after the paper roll h a s been mounted on the holding rod (1) and the skirt (4) lowered over it, the skirt 30 be locked to the holding rod either by locking means (not shown) or merely b y tight-fitting. This will ensure that users of the paper roll are able to handle t h e roll holder with one hand as the hoop (2) can be used as a handle. With the cylindrical embodiment of the holding rod the skirt is in prin c i ple freely rotatable about the rod. If the cover (3) is also to be used as a b rake 35 for the paper roll, it is suggested that the holding rod or parts thereof have a cross-section bounded by an elliptical envelope, and that the skirt have a c orre sponding cross-section. Possibility of free rotation will thereby be pre vented for the skirt, and thus also for the cover, which can thereby act as a brake f o r the paper roll. In such a case, tight-fitting between holding rod and skirt will be a suitable means of locking the skirt, but by providing different cros s- sections, suitably spaced locking means can be provided so that users of the p a - per roll can also in this case handle the roll holder with one hand. According to the present invention the roll holder exerts by means of t h e retaining arrangement (2) a radial pressure which is oriented inwards towards the centre of the paper roll, whereby the latter cannot be unwound un i n te n tionally. For applications of the roll holder other than normal household p u r - poses the radial pressure can be retained by the pivotal movement of the r e taining arrangement taking place against the action of a spring (not shown) , which thereby maintains the radial, inward-oriented pressure. This can take place, for example, aboard a sailing vessel where a worktop is not always h ori zontal.

Claims: PATENT CLAIMS 1. A holder for a roll of unwindable material, in particular a holder for p aper 5 rolls, preferably for standing a paper roll vertically on a horizontal surface, with a cylindrical hold ing rod (1), a base (5) and an essentially known pivotal retaining arrangement for the free end of the paper roll, characterised in that the retaining arran g e ment (2) is pivotally attached to a detachable cover (3) that moves along the axis o of the holding rod and which is equipped with a cylindrical skirt (4) that l ikewise moves axially along the holding rod, and where the dia metrical dimensions of the cover are such that during application the cover i s in contact with the end surface of the paper roll currently in use, and covers i t at least partially. s 2. A holder for a roll in accordance with claim 1, characterised in that t h e holding rod (1) and the skirt (4) have interrelating locking means which c a n be released when the paper roll is changed. 3. A holder for a roll in accordance with claim 1 and/or 2, characterised i n that the pivotal movement of the retaining arrangement (2) takes place against o the action of a spring. 4. A holder for a roll in accordance with any of the preceding claims, c h ar acterised in that the holding rod (1) has a cross-section bounded by a c irc ular envelope . 5. A holder for a roll in accordance with any of claims 1 - 3, characterised i n 5 that the holding rod (1) or parts thereof have a cross-section bounded by an el liptical envelope. 6. A holder for a roll in accordance with any of claims I n 3 and 5, c harac terised in that the skirt (4) or internal parts thereof have a cross-section bounded by an elliptical envelope. 0

Inventors: JOERGENSEN CARSTEN, JOERGENSEN, CARSTEN
Applicants: JOERGENSEN CARSTEN, PI DESIGN AG, JOERGENSEN, CARSTEN, PI-DESIGN AG
Application year: 2000
Main classification: A47K10
IPC codes: A47K10, B65H75