Antique Hospital Chair Chase Lounge?

This chair came from my mom's estate, my parents took care of a lady who was a missionary in Brazil during the 30's and came back to the states very sick, she would lay out in the sun in this chair. We have not been able to find out anything about this chair as to who might have made it or age, probably from the early 1900's. The back wheels are hard rubber and actually have the Firestone logo on them. Any info would be greatly appreciated.