Universal roll holder for one-handed operation

Abstract

A roller holder for one-handed operation, characterized in that the roller holder according to the invention consists of at least one material roller and one brake roller having a rough, non-slip surface; characterized in that both rollers are axially rotatable opposite each other; characterized in that the axes of rotation are aligned parallel to each other; characterized in that the rollers are arranged so that they are movably relative to each other that the surface of the wound material and the surface of the brake roller lie close together, regardless of the amount of wound material, and thus rolling friction is maintained between the two rollers when they rotate; characterized in that the wound material can be unwound unhindered by pulling on the free end, as long as the free end does not touch the brake roller, the brake roller rotating along with the material due to rolling friction;characterized in that the free end of the wound-up material is not guided between the material roller and the brake roller; characterized in that, as soon as the unwinding angle is changed so that the unwinding material rests against the brake roller and partially wraps around it, the material roller and brake roller are pulled together and the rotation of the brake roller is stopped, whereby the rolling friction is converted into static friction, thus stopping the unwinding and the unwound material can be torn off at a tear-off edge or along a perforation or stretched tightly over a cutting rail for separation by means of a cutting device, without the need to manually or otherwise stop the rollers in their movement.

Description

The invention shows a roll holder that can be operated with one hand according to the preamble of claim 1 for unwinding rolled-up material and for cutting off individual sections of the rolled-up material, wherein the unwinding required for cutting is stopped by means of a brake roller and by changing the pull-off angle. Depending on the version, suitable for perforated or non-perforated material, also for self-adhesive films, depending on the version also suitable for one-handed loading. STATE OF THE ART To facilitate the tearing off of sections of materials wound on rolls, such as toilet paper, kitchen paper, cling film, etc., various roll holders exist that are designed to stop or slow down the unwinding of the material at the desired point, so that it is held taut and can be separated either at a tear-off edge, by means of a cutting device, or at a perforation of the material itself, without having to manually stop the roll itself, thus allowing operation with one hand, which pulls the material off the roll. This one-handed operation is important for disabled people and generally increases ease of use considerably. Most known systems that are not motor-driven or equipped with complex mechanics are based on the principle that a component anchored to the base body is pressed by the wound material onto the roller or the wound material itself when operated accordingly, thus creating a sliding friction that transitions into static friction and stops the unwinding. Some well-known systems achieve this effect through rigid or elastic edges where sliding friction increases until the material sticks when it is pulled around them. There is also the variant in which the material to be unrolled is pulled onto a toothed strip, the teeth of which penetrate the material and thus prevent it from unrolling further. A disadvantage of the known arrangements is that they only function without problems if the tensile strength, the design of any perforations, or the sliding properties of the surface of the material being unwound precisely match the specifications of the roll holder. This is because, in all the aforementioned cases, the wound material must withstand a higher load before stopping than with free unwinding and can tear in the wrong place, or it may be too resistant or sliding and not tear at all. Similarly, there are systems that lock up when pulled off abruptly, requiring the user to maintain the appropriate speed. In all the aforementioned arrangements for stopping the unrolling, the method of operation and the material are predefined by the mechanics and are not flexible. In many cases, specific dimensions and designs of the material rolls are required. When cutting sections of elastic and adhesive films, such as cling film, from a roll, this only works smoothly in practice if the film is taut and smooth and cut in this position with a cutting tool. With cling film, the process is further complicated by its tendency to attract each other electrostatically and stick to itself. I am not aware of any consistently practical products that work reliably with these materials and can even be operated with one hand. As soon as the cutting edges become slightly dull or the film is not inserted precisely, the functionality is severely impaired. Likewise, no system is known that allows for both consistently reliable operation and uncomplicated, one-handed insertion for a wide variety of materials. DESCRIPTION OF THE INVENTIONAL ROLLER HOLDER BASIC PRINCIPLE The basic principle according to the invention is illustrated in Fig. 1 and Fig. 2. A rotatable brake roller [4] with a non-slip surface is always in close contact with the surface of the web material on the rotatably mounted material roller [3], which is ensured by the arrangements described below. When the web material is unwound, the material roller [3] rotates clockwise and the brake roller [4] counterclockwise in the illustrated case, which allows for easy, unimpeded unwinding as long as the unwound free end [2] does not touch the brake roller [4]. If the unwinding angle changes such that the free end of the material [2] rests on the surface of the brake roller [4] and partially wraps around it, further unwinding of the web would only be possible if the brake roller [4] rotates clockwise and the material roller [3] itself rotates around the brake roller [4]. This prevents the rollers from being mounted in the housing [1] of the roller holder, on sliding surfaces

[22] , or on bearing or pressure rollers [5],

[23] . The rolling friction is converted into static friction via sliding friction, and the rotation of the material roller [3] is stopped. This effect is intensified by the fact that the material roller and the brake roller [3], [4] are pulled together. The braking can be intuitively controlled by the user via the pull-off angle, independent of the material. The free end [2] can thus be taut when peeling and either separated at a perforation or tear-off edge

[24] or cut off at a cutting rail

[12] . Since rolling friction initially occurs during unwinding, and static friction arises between the web material and the surface of the brake roller [4] as the unwinding angle changes, a very rough, non-slip brake roller [4], which also prevents lateral slippage, can be used for both sensitive and smooth, solid materials. PRIMARY EXECUTION VARIANTS Based on the principle according to the invention, various variants arise depending on the intended use, which are described below. Fig. 3 and Fig. 4 show an arrangement in which the brake roller [4] is held in a fixed rotary bearing [6] and the material roller [3], mounted in a movable rotary bearing [7], is pressed onto the brake roller [4] by its own weight. This arrangement is suitable for perforated material and is characterized by particularly smooth unwinding. Figures 5 and 6 show an arrangement corresponding in function and use to Figures 3 and 4, but with a pivoting arm

[10] and thus a pivotable bearing [8] for the material roller [3] instead of the sliding rotary bearing [7]. Compared to a parallel guide, the pivoting of the material roller [3] and the brake roller towards each other avoids any tilting and jamming that may occur. Figures 7 and 8 show an arrangement of the system according to the invention for material to be cut. In this case, the pivot bearing [6] of the material roller [3] is located at the end of a groove [9], and the movable pivot bearing [7] of the brake roller [4] can move in this groove [9]. Thus, gravity constantly presses the brake roller [4] against the material roller [3]. If the free end [2] is pulled upwards without touching the brake roller [4], the material unwinds very easily. If the pull-off angle is then changed so that the free end [2] wraps around the brake roller [4], the unwinding is stopped, and both rollers pull together. The material can now be guided tautly and smoothly over the cutting rail

[12] . Non-permanently adhesive strips

[15] are applied to the cutting rail

[12] above and below the cutting line, so that the material web [2] remains in the taut position.The material can now be cleanly separated using a cutting carriage

[13] . After cutting, the separated material remains attached to the adhesive surfaces

[15] at the bottom and can thus be easily removed and used without falling off. The new free end [2] created after cutting adheres to the upper adhesive surface

[15] and is therefore optimally positioned for the next cut. This arrangement is particularly suitable for adhesive cling film or similar materials and thus enables one-handed operation even with this problematic material. Figures 9 and 10 show an arrangement of the system according to the invention that functions independently of the dimensions of the material roll [3]. In this case, the material roll [3] rests on the brake roller [4] and a bearing roller [5] with smooth-running swivel bearings [6]. The free end of the material [2] is pulled downwards between the brake roller [4] and the bearing roller [5]. Due to its own weight, the material roll [3] rests on the brake roller [4] and the bearing roller [5] regardless of its dimensions. If the free end [2] is pulled downwards and forwards, the material unwinds easily. If the pull-off angle is changed upwards so that the material partially wraps around the brake roller [4], the unwinding is stopped and the material roll [3] is drawn towards the brake roller [4] and the bearing roller [5]. Now a section can be cut off along a perforation. This arrangement also allows for one-handed loading of the roll holder and is therefore particularly suitable for barrier-free installations. Figures 11 and 12 show an arrangement of the system according to the invention, which is suitable for cutting material on material rolls [3] of different dimensions and for one-handed loading. Analogous to the arrangement shown in Figures 9 and 10, the material roll [3] rests on two easily rotatable rollers. In this case, two bearing rollers [5]. The brake roller [4] is slidably and rotatably mounted [7] above the material roll [3] and presses down on it with its weight. If the free end [2] of the web material is pulled upwards, it can be easily unwound. If it is stretched forwards and downwards over the brake roller [4], the material can be stretched tautly and smoothly over the cutting rail

[12] , where it remains fixed at adhesive surfaces

[15] above and below the cutting line. The cutting then takes place analogously to the arrangement shown in Figures 9 and 10.Arrangement shown in Figures 7 and 8. The arrangement shown in Figs. 13 and 14 is essentially the same as the arrangement shown in Figs. 9 and 10. However, instead of a bearing roller [5], a sliding surface

[22] is used as a support, which simplifies manufacturing. Rolling is somewhat less smooth, which is desirable in some cases. Figures 15 and 16 show a modification of the arrangement depicted in Figures 13 and 14, comprising a tear-off edge

[24] and a finger guard

[25] . The finger guard

[25] is arranged to swing freely above the tear-off edge

[24] such that, in its resting state, it covers the sharp or serrated side of the tear-off edge

[24] . Since the free end [2], which is reliably slowed by the system according to the invention, can be pulled taut over the tear-off edge

[24] , the material pushes the finger guard

[25] to the side, and a section can be torn off along the tear-off edge

[24] . Depending on the material, the tear-off edge

[24] can also be shaped and arranged in such a way that there is no risk of injury and no finger guard

[25] is necessary. Figures 17 and 18 show an arrangement for horizontally cutting material. In this case, the material roll [3] rests on a sliding surface

[22] and is prevented from rolling out of the housing by means of a pressure roller

[23] and a brake roller [4]. Both rollers are mounted to be non-rotatable [6] during use. Only for changing the material roll [3] can the pressure roller

[23] be folded upwards or moved, or the pressure roller

[23] can remain fixed and the material roll [3] can be removed, e.g., laterally or otherwise. As long as the free end [2] is pulled between the brake roller [4] and the pressure roller

[23] , the material can be unwound. The material roll [3] moves freely within the housing. As soon as the free end [2] is pulled over the brake roller [4], the material roll [3] is drawn towards the brake roller [4] and the pressure roller

[23] , and the unwinding stops. Now the free end [2] can be cut off as described above. Figures 19 and 20 show an arrangement that is essentially the same as that shown in Figures 11 and 12. However, here the bearing roller is replaced by a sliding surface

[22] , which simplifies manufacturing and slightly slows down the material roller [3] as it rolls. All arrangements shown with a cutting rail

[12] are also suitable in principle for tearing off perforated pieces. In these variants, the cutting rail

[12] is omitted. Instead of the slidably movable rotary bearings shown [7], swiveling rotary bearings [8] can also be used and vice versa. SPECIFIC EXECUTION VARIANTS Figures 21, 22, 23, 24, 25, 26, 27 to 28 illustrate an application of the roll holder according to the invention for a toilet paper dispenser for easy, one-handed, barrier-free operation with a full and nearly empty roll of material [3]. The brake roller [4] has a fixed pivot bearing [6]. The toilet paper roll [3] is pushed onto a pivotally rotatable [8] receiving roller

[14] . This always lowers the roll of material [3] onto the brake roller [4]. The free end [2] can thus be unwound freely when pulled downwards and torn off when pulled forwards. Figures 29, 30, 31, 32 to 33 show an application of the roll holder according to the invention for a one-handed operated kitchen roll or similar. The material roll [3], pushed onto a receiving roller

[14] , slides in grooves [9] onto the fixedly rotatable [6] brake roller [4]. The housing [1] is attached to a vertical surface. The material is unwound by pulling downwards and can be torn off by pulling forwards. Figures 34, 35, 36, 37, 38, 39 to 40 illustrate an application of the roll holder according to the invention for cutting cling film or similar materials for vertical mounting. The material roll [3], which is pushed onto a receiving roller

[14] , is first placed in grooves [9] arranged laterally on the housing [1], and then the brake roller [4] is placed over it, so that it always rests tightly against the material roll [3]. By pulling the free end [2] upwards, material can be easily unwound. If the free end [2] is pulled taut downwards over the brake roller [4] onto the cutting rail

[12] with two superimposed rows of adhesive surfaces

[15] , a section can be easily cut off with the cutting carriage

[13] . This section does not fall off, but remains attached to the lower adhesive surface

[15] and can thus be conveniently used.The newly created free end [2] resulting from the cut remains in its position, held by the upper adhesive surface

[15] , and is thus ready for the next cut. Figs. 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55 to 56 show an application of the roll holder according to the invention for a toilet paper roll, kitchen roll, or similar without a receiving roller for one-handed operation and loading. Unwinding is very smooth. The resulting situations with a full, medium-full, and almost empty material roll are shown [3]. In this design, the material roll [3] rests on the brake roller [4] and a bearing roller [5]. Unwinding is achieved by pulling downwards. To tear off at the perforation, the free end [2] is pulled forwards. To prevent the nearly empty roll from coming to rest between the housing rear wall [1] and the bearing roller [5], it is recommended to arrange a deflector

[17] on which the material roll [3] slides again between the brake roller [4] and the bearing roller [5] (Figs. 53, 54 to 55). If the material is torn off very close to the brake roller [4], the free end [2] can be easily unwound further by rotating the brake roller [4] and thus lengthened for better gripping. However, there is a possibility that the free end [2] could get caught between the material roll [3] and the brake roller [4], which should be avoided. A separating lamella

[18] arranged horizontally between the brake roller [4] and the bearing roller [5], just in front of the brake roller [4], prevents this (Fig. 56). Figs. 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67 to 68 show an application of the roll holder according to the invention for a film cutter, in which the material roll [3] does not require a receiving roll and which can be used for various dimensions of the material roll [3] and can be operated and loaded with one hand. The principle corresponds to the description for Figs. 11 and 12. The behavior is shown with a full and almost empty material roll [3] (Fig. 57, Fig. 58, Fig. 59 to Fig. 60), as well as in isometric representation the loading and operation of the roll holder (Fig. 61, Fig. 62, Fig. 63, Fig. 64, Fig. 65, Fig. 66, Fig. 67 to Fig. 68). Fig. 69 shows in detail the arrangement of the cutting carriage

[13] and the adhesive surfaces

[15] on the cutting rail

[12] . The cutting carriage

[13] has permanent magnetic wheels

[20] by means of which it adheres to the cutting rail

[12] . This allows for easy removal for cleaning or replacement of the blade

[21] . Figures 70, 71, 72 to 73 illustrate an application according to Figures 13 and 14, which is particularly suitable for accessible toilet or kitchen rolls of various dimensions. Unlike the embodiment shown in Figures 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55 to 56, no deflector or separating lamella is required, as the free end [2] runs smoothly over the sliding surface

[22] . The unwinding is slightly slowed by the sliding surface

[22] . Figures 74, 75, 76 to 77 show a variant of the roll holder according to the invention for use with non-perforated material according to the functional principle shown in Figures 15 and 16. The roll holder shown in Figures 70, 71, 72 to 73 is supplemented in this case by a tear-off edge

[24] , optionally with finger protection

[25] . Figures 78, 79, 80, 81, 82 to 83 show a detailed illustration of the principle according to Figures 19 and 20, with space for storing spare rolls

[26] and with an ergonomically designed housing [1]. The distance between the brake roller [4] and the cutting rail

[12] is particularly large here to make it easier for disabled persons to grasp the free end [2] of the material web. The lateral cutouts in the housing [1] also serve this purpose. The resulting easily accessible space below the sliding surface

[22] is suitable for storing spare rolls

[26] . To replace the material roll [3], the pressure roller

[23] is pushed upwards into the groove [9], which also runs horizontally there (Figures 79 and 83), thus creating space to remove the material roll [3] upwards. KEY BENEFITS OF THE INVENTION: IN EVERY VERSION • Stopping the unwinding process, necessary for one-handed operation, is intuitive and achieved by changing the pull-off angle, regardless of the properties of the wound material, just as if the roll were stopped by hand. • When the unwinding process is slowed, there is no unintentional tearing or slippage of the material. • The braking action is smooth and absolutely reliable, achieved through friction against the brake roller, allowing the free end to be held taut over a tear-off bar for clean cutting or tearing, or even allowing poorly perforated material to be torn off. • Before stopping, the material unwinds freely and easily. DEPENDING ON THE TYPE OF EXECUTION • Material rolls of different dimensions can be used in one roll holder. • Both the operation and loading of the roll holder can be done with one hand. • When stored on two rollers, even very heavy material rolls with differing dimensions can be used and unwound smoothly. • When material rolls of different lengths are used in one roll holder, the rough surface of the brake roller prevents shorter material rolls from slipping within the roll holder. • Films, such as adhesive cling film, can still be cut cleanly due to the taut tension of the cutting rail, even if the blade of the cutting carriage is slightly dull. • The cut end is held by the adhesive surfaces and does not fall downwards after cutting. LIST OF TERMS AND DESIGNATIONS USED • Mounting bracket, housing – component(s) that support the rollers and hold them in the required position. Depending on the design variant, this may include the necessary swivel bearings, pivot arms, and grooves for receiving the rollers. Depending on the requirements, it may be attached to or resting on fixed surfaces. • Web, web material, material web – wound-up material, preferably flat but also of other shapes. • Section – part of the web material that is to be cut off. If it is perforated, this is done in individual sheets; otherwise, it is cut at the desired point using a tear-off edge or a cutting device. • Free end – unwound part of the web material that no longer touches the material reel. • Material reel – reel onto which the web material is wound. Depending on the design, this may include a receiving reel with pins at the ends that engage in swivel bearings or grooves.• Intake roller - cylindrical insert that is inserted into the generally hollow core of the material roll and has pins or similar axles at its ends that sit in the swivel bearings. • Brake roller - smoothly mounted roller that preferably has a rough surface and can generate high static or kinetic friction. • Bearing roller - roller that is smoothly mounted and on which another roller(s) rotatably rest. • Pressure roller - roller that is smoothly mounted so that it rotatably rests on another roller and exerts pressure on it by its relatively high weight. • Tear-off edge, tear-off bar - sharp or serrated edge or bar from which the web material can be torn off. • Cutting bar - bar arranged parallel to the axis of the material roll that serves as a guide for a cutting carriage or similar cutting tool.• Cutting carriage - A cutting device that is guided along the cutting rail and cuts the web material along the cutting line using a cutting edge. • Guide elements - Components that serve as bearings for the rollers and restrict their movement, allowing rotation, displacement, pivoting, and sliding, depending on the design. • Rotary bearing - A bearing in which the end axes of the rollers can rotate axially with low friction, serving as a guide element for the associated roller. • Sliding rotary bearing - A bearing in which the journals or similar axes on the end faces of the rollers can rotate and slide, serving as a guide element for the associated roller. In the simplest case, this is a groove in the housing. • Swiveling rotary bearing - A bearing with which a roller is moved in an arc towards another roller by means of a swivel arm and can also rotate around its own radial axis, serving as a guide element for the associated roller.• Sliding surface, sliding bearing - smooth surface on which the surface of the material roll can slide easily, serving as a guide element for the associated roller. • Groove - groove or similar shape that serves to accommodate the axles of slidably mounted rollers and to insert rollers. Serves as a guide element for the associated roller. • Pull-off angle - angle in the view perpendicular to the axis of the material roll, below which the material web is pulled from the material roll. • Adhesive surface - here a permanently non-permanent, weakly adhesive surface, such as acrylate gel or modified rubber, from which material adhering to it can be removed without leaving residue. • Deflector - element that prevents an almost empty material roll resting on bearing rollers from slipping next to the bearing rollers during unwinding. • Separating strip - element that prevents the free end from getting caught between the material and brake rollers after tearing. Directional terms refer to the sectional views of the figures. LIST OF FIGURES AND REFERENCE MARKS FIGURES (Arrows represent operating or movement directions or force attacks) Basic principle Fig. 1 Unwinding of the web. The brake roller rotates with friction (rolling friction). Fig. 2 Stopping the unwinding of the web. The free end of the web rests against the brake roller. Static friction is created, which stops further unwinding. A suitable component prevents the material roll from being pulled upwards. Variants and configurations Fig. 3 Material roll slidably mounted relative to the brake roll. The free end of the web does not rest against the brake roll and can unwind freely. Fig. 4 Material roll slidably mounted relative to the brake roll. The free end of the web rests against the brake roll, unwinding is stopped, and a section can be torn off at a perforation or tear-off edge. Fig. 5 Material roll pivotably mounted relative to the brake roll. The free end of the web does not rest against the brake roll and can unwind. Fig. 6 Material roll pivotably mounted relative to the brake roll. The free end of the web rests against the brake roll, unwinding is stopped, and a section can be torn off at a perforation or tear-off edge. Fig. 7 Brake roll slidably mounted relative to the material roll. The free end of the web does not rest against the brake roll and can unwind freely. Fig. 8 Brake roll slidably mounted relative to the material roll.The free end of the web rests against the brake roller, the unwinding is stopped, and the web can be cut while taut. Fig. 9 The material roll rests on a bearing roller and a brake roller. The free end of the web does not touch the brake roller and can unwind freely. Fig. 10 The material roll rests on a bearing roller and a brake roller. The free end of the web rests against the brake roller, the unwinding is stopped, and a section can be torn off at a perforation or tear-off edge. Fig. 11 The material roll rests on two bearing rollers. The brake roller, mounted on a sliding bearing, presses down on the material roll. The free end of the web does not touch the brake roller and can unwind freely. Fig. 12 The material roll rests on two bearing rollers. The brake roller, mounted on a sliding bearing, presses down on the material roll.The free end of the web wraps around the brake roller, stopping the unwinding and allowing it to be cut while taut. Fig. 13 The material roll rests on a sliding surface and a brake roller. The free end of the web does not touch the brake roller and can unwind freely. Fig. 14 The material roll rests on a sliding surface and a brake roller. The free end of the web rests against the brake roller, stopping the unwinding, and a section can be torn off at a perforation or tear-off edge. Fig. 15 The material roll rests on a sliding surface and a brake roller. The free end of the web does not touch the brake roller and can unwind freely. Above is a tear-off edge with a finger guard covering the sharp edge. Fig. 16 The material roll rests on a sliding surface and a brake roller.The free end of the web rests against the brake roller, the unwinding is stopped, and the web can be pulled taut over the tear-off edge. This pushes the finger guard to the side, exposes the sharp edge, and allows a section to be torn off at the tear-off edge. Fig. 17 The material roll rests on a sliding surface. The brake roller and a pivotally mounted pressure roller hold it in position. The free end of the web does not touch the brake roller and can unwind freely (the reduced diameter of the material roll due to unwinding is shown in dashed lines). Fig. 18 The material roll rests on a sliding surface. The brake roller and a pivotally mounted pressure roller hold it in position. The free end of the web rests against the brake roller, the unwinding is stopped, and the web can be pulled taut over the cutting bar and cut (the reduced diameter of the material roll due to unwinding is shown in dashed lines).19 The material roll rests on a sliding surface and a brake roller. A pressure roller holds it in position. The free end of the web does not touch the brake roller and can unwind freely. Fig. 20 The material roll rests on a sliding surface and a brake roller. A pressure roller holds it in position. The free end of the web rests against the brake roller, the unwinding is stopped, and the web can be pulled taut over the cutting bar and cut. Application variants Dispenser for perforated sheets - swiveling material roller Fig. 21 The full roll of material rests pivotably on the brake roller. The web can be unwound. The brake roller rotates with it. Fig. 22 The full roll of material rests pivotably on the brake roller. The free end of the web rests against the brake roller, unwinding is stopped, and sections of the web can be torn off at the perforation. Fig. 23 Isometric view of Fig. 21. Fig. 24 Isometric view of Fig. 22. Fig. 25 The almost empty roll of material rests pivoted downwards on the brake roller. The web can be unwound. The brake roller rotates with it. Fig. 26 The almost empty roll of material rests pivoted downwards on the brake roller. The free end of the web rests against the brake roller, unwinding is stopped, and sections of the web can be torn off at the perforation. Fig. 27 Isometric view of Fig. 25. Fig. 28 Isometric view of Fig. 26. Dispenser for perforated sheets - sliding material roll Fig. 29 The material roll lies slidably in a groove on the brake roller. The web can be unwound. The brake roller rotates with it. Fig. 30 The material roll lies slidably in a groove on the brake roller. The free end of the web rests against the brake roller, unwinding is stopped, and parts of the web can be torn off at the perforation. Fig. 31 Isometric view of inserting the material roll into the side grooves. Fig. 32 Isometric view of Fig. 29. Fig. 33 Isometric view of Fig. 30. Dispenser for sheet material to be cut Fig. 34 The brake roller is slidably positioned on the material roller. The free end of the web does not touch the brake roller and can unwind. Fig. 35 The brake roller is slidably positioned on the material roller. The free end of the web wraps around the brake roller, stopping the unwinding. The web can be pulled taut over a cutting rail and a section cut off. Fig. 36 Isometric view of the insertion of the material and brake rollers. Situation at the beginning of the insertion process. Fig. 37 Isometric view of the insertion of the material and brake rollers. Material roller inserted. Fig. 38 Isometric view of Fig. 34. Fig. 39 Isometric view of Fig. 35. Fig. 40 Isometric view of cutting the tensioned material. Dispenser for perforated webs - material roll resting freely on two rollers Fig. 41 A full roll of material rests freely on the brake roller and a bearing roller. The free end of the web does not touch the brake roller and can be unwound. The brake and bearing rollers rotate as the web unwound. Fig. 42 Isometric view of Fig. 41. Fig. 43 A full roll of material rests freely on the brake roller and a bearing roller. The free end of the web rests against the brake roller. Unwinding is stopped, and pieces of the web can be torn off at the perforation. Fig. 44 Isometric view of Fig. 43. Fig. 45 A half-full roll of material rests freely on the brake roller and a bearing roller. The free end of the web does not touch the brake roller and can be unwound. The brake and bearing rollers rotate as the web unwound. Fig. 46 Isometric view of Fig. 45. Fig. 47 A half-full roll of material rests freely on the brake roller and a bearing roller. The free end of the web rests against the brake roller.The unwinding is stopped, and pieces of the web can be torn off at the perforation. Fig. 48 Isometric view of Fig. 47. Fig. 49 An almost empty roll of material rests freely on the brake roller and a bearing roller. The free end of the web does not touch the brake roller and can be unwound. The brake and bearing rollers rotate with the unwinding. Fig. 50 Isometric view of Fig. 49. Fig. 51 An almost empty roll of material rests freely on the brake roller and a bearing roller. The free end of the web rests against the brake roller. The unwinding is stopped, and pieces of the web can be torn off at the perforation. Fig. 52 Isometric view of Fig. 51. Fig. 53 An almost empty roll of material rests freely on the brake roller and a bearing roller. It slips and is guided back onto the two rollers by the deflector. Fig. 54 Isometric view of Fig. 53 Fig. 55 An almost empty material roll lies freely on the brake roll and a bearing roll.It slips and is guided back onto the two rollers by the deflector. Fig. 56 A section of the material web has been torn off very close to the brake and bearing rollers. The separating strip prevents the end of the material web from getting caught between the brake and material rollers and deflects it downwards. Dispenser for sheet material to be cut - material roll resting freely on two rollers Fig. 57 A full roll of material rests freely on two bearing rollers. The brake roller is slidably mounted on the roll. The free end of the web does not touch the brake roller and can be unwound. The brake and bearing rollers rotate as the web unwound. Fig. 58 A full roll of material rests freely on two bearing rollers. The brake roller is slidably mounted on the roll. The free end of the web rests against the brake roller. Unwinding is stopped. The web can be pulled taut over a cutting bar and a section cut off. Fig. 59 An almost empty roll of material rests freely on two bearing rollers. The brake roller is slidably mounted on the roll. The free end of the web does not touch the brake roller and can be unwound. The brake and bearing rollers rotate as the web unwound. Fig. 60 An almost empty roll of material rests freely on two bearing rollers. The brake roller is slidably mounted on the roll.The free end of the web rests against the brake roller. Unwinding is stopped. The web can be pulled taut over a cutting rail and a section cut off. Fig. 61 Isometric view of the arrangement according to Figs. 57, 58, 59 to 60. No material roll is inserted. Fig. 62 Isometric view of the arrangement according to Figs. 57, 58, 59 to 60. The brake roller is raised to receive the material roll. Fig. 63 Isometric view of the arrangement according to Figs. 57, 58, 59 to 60. The material roll is inserted. Fig. 64 Isometric view of the arrangement according to Figs. 57, 58, 59 to 60. The material roll is inserted. Fig. 65 Isometric view of the arrangement according to Figs. 57, 58, 59 to 60. The brake roller is mounted on the material roller. Fig. 66 Isometric view of Fig. 57. Fig. 67 Isometric view of Fig. 58.68 Isometric view of Fig. 58 - track being cut. Fig. 69 Detail of cutting rail with cutting carriage and adhesive surfaces. Dispenser for perforated webs - material roll rests freely on sliding surface and brake roller Fig. 70 A full roll of material rests freely on the brake roller and a sliding surface. The free end of the material web does not touch the brake roller and can unwind freely. Fig. 71 A full roll of material rests freely on the brake roller and a sliding surface. The free end of the material web touches the brake roller, unwinding is stopped, and pieces can be torn off the web at the perforations. Fig. 72 Isometric view of Fig. 70. Fig. 73 Isometric view of Fig. 71. Dispenser for rolls with tear-off edge - material roll resting freely on sliding surface and brake roller Fig. 74 A full roll of material rests freely on the brake roller and a sliding surface. The free end of the material web does not touch the brake roller and can unwind freely. The finger guard covers the sharp edge of the tear-off strip. Fig. 75 A full roll of material rests freely on the brake roller and a sliding surface. The free end of the web rests against the brake roller. Unwinding is stopped. The web can be pulled taut over the tear-off edge. The finger guard is pushed to the side, and a section can be torn off at the tear-off edge. Fig. 76 Isometric view of Fig. 74. Fig. 77 Isometric view of Fig. 75. Tape dispenser with cutting device - material roll resting freely on sliding surface and brake roller, adjusted with pressure roller, with compartment for spare rolls Fig. 78 Isometric view. Fig. 79 Isometric view of Fig. 83. Fig. 80 Isometric view of Fig. 82. Fig. 81 A full roll of material rests freely on the brake roller and a sliding surface. The pressure roller rests on the roll of material and prevents it from slipping out of the housing. The free end of the web does not touch the brake roller and can unwind freely. Fig. 82 A full roll of material rests freely on the brake roller and a sliding surface. The pressure roller rests on the roll of material and prevents it from slipping out of the housing. The free end of the web rests against the brake roller. Unwinding is stopped. The web can be pulled taut over a cutting rail and a section cut off. Fig. 83 To change the roll of material, the pressure roller is moved along the groove into a park position so that the empty roll of material can be removed without hindrance and replaced with a full one. DESIGNATOR 1 Bracket, housing 2 Free end of the material web 3 Material roller 4 Brake roller 5 Bearing roller 6 Fixed swivel bearing 7 Sliding swivel bearing 8 Swiveling swivel bearing 9 Groove for the sliding swivel bearing 10 Swivel arm for swiveling swivel bearing 11 Pivot point of the swivel arm 12 Cutting rail with slot for the cutting edge 13 Cutting carriage 14 Pick-up roller 15 Non-permanent adhesive surface 16 Cut in the material 17 Deflector 18 Separating strip 19 Handle of the cutting carriage 20 Magnetic wheels 21 Blade / cutting edge 22 Sliding surface 23 Pressure roller 24 Tear-off edge / tear-off rail 25 Finger guard 26 Spare rolls 27 Cutout in the housing for better gripping of the free end of the material web and for removing spare rolls

Claims

A roll holder for one-handed operation, characterized in that the roll holder according to the invention consists of at least one material roll and one brake roll having a rough, non-slip surface; characterized in that both rolls are axially rotatable opposite each other; characterized in that the axes of rotation are aligned parallel to each other; characterized in that the rolls are arranged so that they are movably relative to each other that the surface of the wound material and the surface of the brake roll lie close together, regardless of the amount of wound material, and thus rolling friction is maintained between the two rolls when they rotate; characterized in that the wound material can be unwound unhindered by pulling on the free end, as long as the free end does not touch the brake roll, whereby the brake roll rotates along with the material due to rolling friction;characterized in that the free end of the wound-up material is not guided between the material roller and the brake roller; characterized in that, as soon as the unwinding angle is changed so that the unwinding material rests against the brake roller and partially wraps around it, the material roller and brake roller are pulled together and the rotation of the brake roller is stopped, whereby the rolling friction is converted into static friction, thus stopping the unwinding and the unwound material can be torn off at a tear-off edge or along a perforation or stretched tightly over a cutting rail for separation by means of a cutting device, without the need to manually or otherwise stop the rollers in their movement. Roller holder for one-handed operation according to claim 1, characterized in that a material roller and the brake roller are mounted in guide elements in such a way that they are always close together due to their own weight. Roller holder for one-handed operation according to claim 1, characterized in that the material roller rests on a fixedly rotatable brake roller and a fixedly rotatable bearing roller or a sliding surface arranged next to it. Roller holder for one-handed operation according to claim 1, characterized in that the material roller rests on a fixedly rotatable bearing roller or a sliding surface and on a further, adjacently arranged fixedly rotatable bearing roller or sliding surface, and the brake roller, held in guide elements, located above the material roller, rests on it. Roller holder for one-handed operation according to claim 1, characterized in that the material roller rests on a fixedly rotatable brake roller and on a fixedly rotatable bearing roller or sliding surface arranged next to it, and a pressure roller, held in guide elements, located above the material roller, rests on it. Roller holder for one-handed operation according to claim 1, characterized in that the material roller rests on a sliding surface and is secured in its position by rollers lying side by side above the material roller, wherein one roller is the brake roller, one roller is a pressure or bearing roller, of which at least one roller has a movable bearing. Roller holder for one-handed operation according to claims 1 and 3, characterized in that a separating lamella is arranged between the brake roller and the bearing roller, which prevents the free end of the material web from contacting the brake roller when it is located between the bearing roller and the brake roller; characterized in that the housing has at least one deflector; characterized in that the deflector(s) are arranged outside of the brake and bearing rollers in such a way that the material roller slides back onto the bearing and brake rollers if it slips due to incorrect operation. Roller holder for one-handed operation according to the preceding claims, characterized in that the cutting carriage is held magnetically on the cutting rail by means of permanent magnetic running wheels. Roll holder for one-handed operation according to the preceding claims, characterized in that the cutting rail is provided with one or more non-permanent adhesive surfaces. Application of the braking principle of the roller holder with one-hand operation according to the preceding claims also for braking and tensioning for other mechanical arrangements.

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