Abstract: The subject of the invention is a frame for seats in public transport vehicles, used in vehicles such as trams, school buses or other vehicles for transporting passengers on short distances, with low requirements for the comfort of travel. A frame for a seat in public transport vehicles in the form of shaped bent profile that creates a backrest and a seat pan, to which brackets for the seat pan and backrest pillows are attached, wherein the profile (1) in a section perpendicular to its longitudinal axis has an outline similar to an ellipse and its longer section axis is tilted upwards in an outside direction from the vertical plane, which forms the frame's perpendicular bisector, by angle ? ranging from 10-30°, preferably 20°.

Abstract: A seating apparatus has a seat with a seat frame, a backrest extending upwardly from said seat, a support mechanism mounted to the seat frame, a locking mechanism cooperative with the support mechanism, said a lock cooperative with the locking mechanism. The locking mechanism has an upper arm mounted rotationally to the seat frame and to the support mechanism. The lock is affixed to at least one of the first and second arms and extends outwardly of a side of the seat. The lock is suitable for locking a position of the arms and the seat frame.