Invalid Chair, Unknown Manufacturer

Invalid Chair, unknown manufacture, [pre-1900]. Canada Science and Technology Museum, artifact no. 2013-0100. Believed to have been used in Payzant Memorial Hospital, Windsor, Nova Scotia.

Until the late nineteenth century, invalid chairs rolled on wooden wagon wheels and could be manufactured by the carriage and furniture makers of small towns like Windsor, Nova Scotia where this chair originated. It has push rims but would have been heavy to propel. With the large driving wheels in front and one stabilizer wheel at the back, the occupant could not tip it back to go over obstructions. How much mobility did the chair give the invalid?