which are both pivotally arranged by means of hinge type joints 7 8 and can be folded upwards for transportation or when not in use the folded up arrangement can be seen for example in fig5 and 6 in the arrangement in fig1 a support rod 10 which is also arranged on the frame 2 with the aid of a joint 9 is provided beneath the pivot joint 8 which supports the seat 14 the support rod 10 on the one hand supports with its end 12 the seat 14 on the other hand it may be extended with the aid of a telescopic rod 11 until support on the floor 27 is produced 0048 fig3 and 4 show a further arrangement of a support rod 10 in which the joint 9 for the support rod 10 is arranged on the frame 2 at the same height as the joint 8 in this case the support rod 10 also only provides support on the floor 27 and may be folded in at the bottom for example for transportation all joints of the seat arm rests support rod and the like can be fixed in other words secured and can also be replaced in modified constructions by sliding mounts clips catches or fixing screws for the transportation position in fig5 the elements 10 to 15 can be collapsed and folded to the.