Seat support

Claim 1

A SET SUPPORT, PARTICULARLY FOR USE IN AUTOMOTIVE VEHICLES, COMPRISING A BASE; A LOAD-TRANSMITTING FRAME ADAPTED TO SUPPORT A SEAT; GUIDE MEANS ARTICULATELY CONNECTING SAID FRAME WITH SAID BASE SO THAT THE FRAME IS MOVABLE BETWEEN AN UPPER POSITION AND A LOWER POSITION; RESILIENT CUSHIONING MEANS COMPRISING AT LEAST ONE ELONGATED LEAF SPRING HAVING A FIRST END PORTION SUPPORTINGLY ENGAGING SAID FRAME AND A SECOND END PORTION ADJACENT TO SAID BASE; FULCRUM MEANS MOUNTED IN SAID BASE AND SUPPORTINGLY CONNECTED WITH SAID SPRING INTERMEDIATE SAID END PORTIONS THEREOF SO THAT THE SPRING IS ROCKABLE ABOUT SAID FULCRUM MEANS; FIRST ADJUSTING MEANS PROVIDED ON SAID BASE AND ENGAGING SAID SECOND END PORTION FOR ADJUSTING THE INCLINATION OF SAID SPRING AND FOR THEREBY ADJUSTING THE ELEVATION OF SAID FRAME, SAID FRAME BEING MOVABLE DOWNWARDLY AGAINST AND UPWARDLY UNDER THE BIAS OF SAID RESILIENT MEANS; AND SECOND ADJUSTING MEANS PROVIDED ON SAID LOAD TRANSMITTING FRAME, SAID SECOND ADJUSTING MEANS HAVING A PORTION ENGAGING SAID FIRST END PORTION OF SAID SPRING AND BEING ADJUSTABLE IN THE LONGITUDINAL DIRECTION OF SAID SPRING SO AS TO CHANGE THE EFFECTIVE LENGTH THEREOF AND TO THEREBY CHANGE THE BIAS WHICH SAID SPRING EXERTS ON SAID LOAD TRANSMITTING FRAME.