Adjustable support frame for an adjustable bed or the like

In an adjustable bed or the like having a base, an articulable load-bearing portion disposed over said base, said load-bearing portion comprising a head element articulably connected to said base, a middle element articulably connected at one end thereof to the adjacent end of said head element, and a foot element articulably connected at one end thereof to the adjacent opposite end of said middle element, the improvement which comprises adjustable support means communicating between said base and each of said middle and foot elements for supporting said elements over said base and for adjusting the position of said elements relative to each other and said base without affecting the position of said head element relative to said base, said adjustable support means including a first member articulably connected at one end thereof to said base and abutted at the opposite end thereof against one of said middle and foot elements for relative movement along said one element, and a second member articulably connected to said first member, said second member being abutted at one end thereof against said base, and at the opposite end thereof against the other of said middle and foot elements, for relative movement along said base and the other of said elements.