Abstract: A generally rectangularly shaped support frame provided with ground-engaging wheels upon which almost any type and size of conventional chair may be readily mounted so as to provide mobile means for transporting non-ambulatory persons; certain of the ground engaging wheels are capable of being rotated manually by the person using the converted wheel chair in order to propel the chair in two embodiments of the invention, electrically in a third embodiment and selectively manually or electrically or both manually or electrically in a fourth embodiment thereof; a retractible foot rest is also incorporated in the support frame.