with reference to the drawings , the invention will now be described in detail with regard for the best mode and the preferred embodiment . fig1 - 5 show the secondary part 1 , 2 , 3 , 4 , 5 , of a torsional vibration damper . only one half of the secondary part is shown . the other half of the secondary part mirrors the first . the secondary part 1 in fig1 has a first , essentially u - shaped window or recess 6 with a flat base surface 7 and two side surfaces 8 and 9 in which are located projecting elements 10 , 11 . these projecting elements 10 , 11 hold contact surfaces 12 , 13 that have circular elevation members 14 , 15 that project to the inside of the u . a small helical spring 16 can be placed on the elevation member . concentric to the small spring 16 is a large helical spring 17 that abuts the contact surfaces 12 , 13 and is tangential in the u - shaped window 6 of the disk 1 . like the small spring 16 . in this exemplary embodiment , the circular elevation members 14 , 15 extend slightly into the small spring 16 and only prevent the spring from bending radially against small radial force . when the radial force is greater , it is necessary for the circular elevation members 14 , 15 to extend further into the spring to counteract the radial force acting on the springs . other contact surfaces 19 , 20 are shown in the other u - shaped recess 18 in fig1 where at least one of the circular elevation members 21 , 22 extends further into the spring to prevent the spring from bulging radially primarily in the middle as a result of centrifugal force . there is a gap 23 between the elevation members 21 , and 22 to make it easier to insert the spring . this makes it possible to design the elevation members 21 and 22 as one piece with the disk 1 . in fig2 on the left there is a guide 25 that extends the entire length of the spring 24 , while on the right side , there is a corresponding guide 26 for coaxial springs 27 , 28 . the coaxial springs 27 and 28 extend between two contact surfaces 29 , 30 , and the individual spring 24 on the left side lies directly on the disk 2 of the secondary part . both guides 25 , 26 have a concave surface 31 , 32 on their radially interior side to allow the springs to bend on a circular arc . in practice , the springs are usually inserted slightly bulging to the outside and hence lie on the concave surface 31 , 32 of the guide 25 , 26 . fig3 shows guides 33 , 34 with faces 35 , 36 , 37 , 38 at a sharp angle to each other that are inserted in the disk 3 so that force radiating outward is captured by the contact surfaces between the guide 33 , 34 and the disk 3 . fig4 shows another way to attach the guides 39 , 40 to the disk 4 . attached to the faces 41 , 42 of the guide 39 via bars 43 , 44 are cylinders 45 , 46 perpendicular to the disk 4 that are attached in corresponding recesses 47 , 48 on the disk 4 . fig5 shows a particularly useful embodiment in which guides 49 , 50 are attached to the disk 5 of the secondary part with snap - in locks . the shape of the guides can be seen from comparing fig5 and 6 . there are recesses 53 , in opposing faces 51 , 52 of the guide 54 to allow interaction with the disk 5 . lateral cuts 55 , 56 that extend behind the recesses 53 , 54 produce projections 57 , 58 between the recess and cut that move in the plane of the disk 5 . the projections 57 , 58 are shown moving in the plane of the disk 5 in fig7 . this movement makes it easy to insert the guide 50 with the spring 59 into the u - shaped recesses 60 and 61 at opposing sides 62 , 63 of the u - shaped recess 64 in the disk 5 . the guides 49 , 50 are preferably made of plastic so that the projections 57 , 58 can bend . beveled surfaces 65 , 66 on the projections 57 , 58 make it easier to insert the guide 50 in the recesses 60 , 61 of the disk 5 . it is contemplated that certain equivalents or substitutions for elements set forth above may be obvious to those skilled in the art , and therefore the true scope and definition of the invention is to be as set forth in the following claims .