only one end of said bar is depressed while the second end provides a pivot with respect to the frame supporting the paper feed mechanism the paper feed rolls and shafts are supported on support plates which are engaged by the paper feed release bar and are caused to be depressed by the pivoting movement of the paper feed release bar with respect to the frame member under the influence of the camming release member application_number US 62636284 A description referring to fig1 which is a partial cutaway view of the paper feed mechanism a platen 10 is positioned such that platen shaft 12 is supported by frame 14 frame 14 provides the rigid support necessary to precisely position platen 10 relative to the remainder of the typewriter or printer in order to provide the forces necessary to increment the paper about the platen feed rolls 16 18 are biasingly engaged with the periphery of the platen 10 on the lower portion of the platen 39 s periphery rear feed rolls 16 and front feed rolls 18 are rotatably supported and affixed to shaft 20 and 22 respectively to maintain the feed roll shafts 20 and 22 in parallelism feed roll plates 24 are provided one of which engages each end of feed roll shafts 20 and 22 feed roll plates 24 act as supports for the.