slidably mounted to leg 182 wherein latch pin 192 is biased upwardly by spring 194 so as to lockingly engage latch member 196 which is affixed to bell crank lever 180 see fig1 and 16 to position secondary frame sections 19 and 124 of respective units 12 and 14 from a retracted position to an extended position one simply pulls the particular secondary extendible frame section outwardly from the main frame section fig1 illustrates the secondary frame section 124 as being pulled forwardly and outward of main frame section 122 as frame section 124 moves forward hinge arms 176 and 178 start to open causing override spring 189 to stretch and telescoping bars 173 to slide from tubular members 142 and 143 when fully extended as illustrated in fig1 secondary frame 124 is held in a fully extended position by means of springs 189 thus pulling hinge arms 176 and 178 into an override open position whereby spring 189 is arranged inwardly of hinge 174 by projecting support bar members 179 that are secured to the respective hinge arms 176 and 178 when both units 12 and 14 are fully extended cushions 24 and 26 are then positioned in a side by side flat bed like arrangement as seen in fig3 when the bed mode is to be changed back to the sofa mode bell crank lever 180 must first be moved to the left as shown in fig1 by arrow 194 as lever 180 is moved to the left both cables 186 are pulled causing the connected hinge arms 174 and 176 to fold inwardly against the biasing force of spring 189 as represented by the phantom lines.