referring now to fig1 and 2 , a cutting aid according to the first embodiment comprises a ring body 1 and a tension fastener 2 to close and clamp the ring body 1 . inside the ring body 1 a cake ( not shown ) may be accommodated on the inside for said cake to be cut or divided . to this end there is envisaged in the ring body 1 at least one guide aperture 3 for guiding a cutting apparatus . in the following , the cutting aid is described in more detail with reference to its intended use . the ring body 1 essentially exhibits the shape of a thin - wall cylinder jacket or a hollow cylinder which is open at the bottom and the top . it is formed by a bent strip of stainless steel sheet , which may be clamped and is a little flexible . the ring body 1 has a central longitudinal axis 4 , which extends vertically in the centre of the ring body 1 . at the bottom the ring body 1 exhibits a straight base edge 5 , which spans a level standing surface for placing the ring body 1 onto another surface , or a standing plane . for example , the ring body 1 may be placed with its base edge 5 onto a table , an underlay , or a cake or gateau plate or the like . the ring body 1 has a constant , vertical height h , which is oriented in the direction of the central longitudinal axis 4 . the height h ranges from 3 cm to 20 cm , preferably from 5 cm to 10 cm . the ring body 1 exhibits a constant diameter d , which is between 15 cm and 35 cm , preferably between 20 cm and 30 cm . it also has an inner wall 6 and an outer wall 7 lying opposite to the inner wall 6 . the inner wall 6 faces the central longitudinal axis 4 , while the outer wall 7 faces away from the central longitudinal axis 4 . the inner wall 6 limits radially or towards the outside a cake - accommodating space 8 , which is essentially ring - shaped . in the cake - accommodating space 8 there may be accommodated a cake to be cut . the ring body 1 exhibits a first tensioning end 9 and a second tensioning end 10 , which , with the ring body 1 closed , are situated essentially adjacent to each other . the two tensioning ends 9 , 10 are arranged to overlap . here , the tensioning ends 9 , 10 are understood as areas , which extend from the two closing vertical edges of the ring body 1 , the first tensioning end 9 running along the outside while the second tensioning end 10 runs along the inside . on the tensioning ends 9 , 10 there is affixed on the outside the tension fastener 2 , which is essentially made up of two parts 11 , 12 . part 11 , which is allocated to the first tensioning end 9 , comprises a fastening element 13 affixed to the tensioning end 9 , the fastening element 13 being designed as a fitting riveted to the outside of the tensioning end 9 . moreover , part 11 comprises a tensioning lever 14 , which is swingably mounted with its base on the fastening element 13 . the tensioning lever 14 is swingable about a vertical swing axis 15 , which extends in parallel to the central longitudinal axis 4 . on the tensioning lever 14 there is envisaged , at a distance from its base , an inner receptacle . moreover , the tensioning lever 14 has an actuating section to actuate it manually . part 12 , which is affixed to the second tensioning end 10 , comprises a fastening element 16 , which is again designed as a fitting and riveted to the outside of the tensioning end 10 . on the fastening element 16 a tensioning bracket 17 is swingably mounted . the tensioning bracket 17 , which is also a constituent of part 12 , is swingable about a vertical swing axis 18 , which runs parallel to the swing axis 15 of the tensioning lever 14 . in order to close and clamp the ring body 1 , the free end 19 of the tensioning bracket 17 must be inserted into the receptacle of the tensioning lever 14 . when the tensioning lever 14 is then swung to the outer wall 7 of the tensioning end 9 , the ring body 1 is pulled together via the tensioning bracket 17 and the fastening element 16 , and is thus clamped . when the tension fastener 2 is opened , however , the ring body 1 again expands . in the ring body 1 there are envisaged a plurality of punched - out guide apertures 3 , which fully penetrate the ring body 1 , thereby creating a connection between the inner wall 6 and the outer wall 7 . they are of an identical design and exhibit the shape of a slot . the guide apertures 3 , which are arranged above each other , run parallel to the base edge 5 and are thus horizontally oriented . the guide apertures 3 practically predetermine various cutting levels , which are parallel to the base level . the guide apertures 3 thus extend vertically to the central longitudinal axis 4 . they each exhibit a constant width b in the direction of the central longitudinal axis 4 of 6 mm to 10 mm , preferably of 8 mm . adjacent to a guide aperture 3 there are in each case guide webs 20 , which each have a constant height r in the direction of the central longitudinal axis 4 of 6 mm to 10 mm , preferably of 8 mm . the distance between guide apertures 3 is thus also constant . the guide apertures 3 are arranged vertically above each other in the direction of central longitudinal axis 4 , so that the guide apertures 3 run at different heights of the ring body 1 . the guide apertures 3 in the ring body 1 extend about the central longitudinal axis 4 over an angle range stretching from 100 ° to 350 °, preferably from 150 ° to 250 °. the part of the ring body 1 , into which the guide apertures 3 do not extend , serves as a holding section for the guide webs 20 . a total of six guide apertures 3 are envisaged here . preferably there are six to ten guide apertures 3 . especially preferred are eight guide apertures 3 . during the use of the cutting aid , the cake to be cut is inside cake - accommodating space 8 , the ring body 1 extending around the cake , which preferably has a round shape . the cake must be inserted into the cake - accommodating space 8 of the ring body 1 with the tension fastener 2 opened . the ring body 1 is preferably held in hand and put down from the top so that it encircles the cake . however , conversely , the cake may also be inserted from the top into the cake - accommodating space 8 . the ring body 1 then stands with its base edge 5 safely on a carrying surface , which — as already mentioned — can be a conventional cake plate . the tension fastener 2 then has to be closed by actuating the tensioning lever 14 , whereby the ring body 1 clamped and thus attains a slightly smaller diameter d . the size of the ring body 1 has been selected such that the inner wall 6 of the clamped ring body 1 abuts on the outside against the vertical side edge of the cake over an angle range of at least 180 °, preferably of at least 320 °. the inner wall 6 thus preferably abuts against the cake roughly over the full circumference thereof . the cake is then secured on the side in its position inside the ring body 1 , so that it cannot be displaced crosswise relative to the central longitudinal axis 4 . a cutting apparatus can now be inserted via a guide aperture 3 or via several guide apertures 3 from the outside through the side edge of the cake into the cake , which is fixed in place , and be moved along the entire guide aperture ( s ) 3 . the blade of a cutting knife , for example , can be inserted into the cake sideways and / or horizontally . thereafter , the tension fastener 2 must again be opened and the ring body 1 must be turned relative to the cake , so that the cutting of the cake can be completed . this is necessary since the guide apertures 3 do not extend over the full circumference of the ring body 1 . depending on the cutting actions performed , the cake is cut into one horizontal layer or slice or several horizontal layers or slices , which , thanks to the guide apertures 3 , each have a constant thickness or height . it is possible for the cake to be cut in the clamped position via several guide apertures 3 . the cake can also be divided only once at a desired height . to this end , a corresponding guide aperture 3 for cutting the cake must be chosen . in the following there is described a second preferred embodiment of the invention . identical parts carry the same reference numerals as for the first embodiment , reference to the description of which is hereby made . functionally like components , which are of a different design , receive the same reference numerals followed by an ‘ a ’. compared with the first embodiment , the second embodiment has a different tension fastener . according to the second embodiment , the tension fastener 2 a is designed such that the ring body 1 can be held in different size positions . to this end , the tension fastener 2 a exhibits several , preferably two , receptacles for the tensioning bracket 17 a , which are arranged at a distance to each other . according to fig3 there are envisaged two separate fastening elements 16 a on the second tensioning end 10 , which each have a receptacle to receive or store the free end 19 of the tensioning bracket 17 a . the receptacles or the fastening elements 16 a are arranged at a distance to each other along the circumferential direction of the ring body 1 . the receptacles are oriented in the direction of the central longitudinal axis 4 . the receptacles or the fastening elements 16 a thus have a different distance to the tensioning lever 14 . the free end 19 of the tensioning bracket 17 a can thus be inserted into one of the receptacles . consequently , the cutting aid can , in the closed position of the tension fastener 2 a , exhibit different predefined diameters d . when the tensioning bracket 17 a is clipped into the receptacle located further away from the tensioning lever 14 , then the diameter d of the ring body 1 with the tension fastener 2 a closed is approximately 26 cm , while the diameter d is approximately 28 cm when the tensioning bracket 17 a is inserted into the receptacle arranged closer to the tensioning lever 14 . it is thus possible to cut cakes of different diameters through the adjustable tension fastener 2 a . alternatively , the two separate fastening elements 16 a are connected with each other as one peace , thus forming a unit . said unit again comprises several receptacles , which are positioned at a distance to each other in the circumferential direction of the ring body 1 so that cakes of different sizes can be cut . according to an alternative embodiment there are envisaged on the tensioning lever 14 several inner receptacles that are arranged at different distances to the base of the tensioning lever 14 . through this , too , the ring body 1 can exhibit different diameters d in the clamped state . according to another embodiment , retaining projections are envisaged on the outer wall 7 of the ring body 1 instead of the tension fastener 2 , 2 a . one retaining projection is affixed on each tensioning end 9 , 10 . the retaining projections are positioned at the same height of ring body 1 and have an angular shape . they are each attached to the ring body 1 with one leg . in contrast , the free legs of the retaining projections , which legs project essentially radially from the ring body 1 , may be grasped by a user of the cutting aid with one hand . using the retaining projections , the ring body 1 may be compressed over a certain range by hand into any size , so that here a quasi stepless adjustment of the diameter d is possible over a certain range . however , it is , for example , also possible to run a rubber band over the retaining projections to obtain the desired diameter d of the ring body 1 . using the cutting aid , unskilled persons can easily cut thin cake slices , which may be used , for example , for making a “ prinzregententorte ” sponge cake . a prinzregententorte comprises at least six thin layers and chocolate butter cream .
the invention relates to a cutting aid for facilitating the cutting of cake , having a ring body , the ring body radially limiting a cake - accommodating space for receiving a cake to be cut , an inner wall for at least partially abutting against the edge of the cake to be cut , and at least one guide aperture for guiding a cutting apparatus for cutting the cake .