Abstract: A collapsible chair frame 1 comprises a base 10 having longitudinally extending side bars 10a, 10b, with front mounting brackets 11a, 11b attached to one end of each side bar 10a, 10b. An actuation handle 13 is rotatably connected to the mounting bracket 11a, 11b so as to be rotatable relative thereto about a second axis parallel to but offset from said first axis, and one of a second pair of brackets 20a, 20b is secured to a second end of each side bar 10a, 10b. A front support bar 16, 17 extends from each side of said actuation handle 13 at an inclined angle substantially towards said second end of its respective side bar 10a, 10b. A pair of rear support bars 21, 22 are rotatably connected to the second side brackets and extend at an inclined angle substantially towards said first end of its respective side bar 10a, 10b. Geared plates 18, 24 on ends of the support bars on each side of the frame engage with each other so as to contain the bars 21, 22 on each side to rotate together.