shaped end plates 51 and 52 preventing further withdrawal of belt 32 from the retractor spool 44 referring now to fig4 bottom wall 43 of retractor 34 is joined to an l shaped base member 53 fig4 by which retractor 34 becomes secured to the frame 11 of the seat 10 of the preferred embodiment with the retractor 34 being positioned beneath or adjacent the under side of the seat 10 fig2 and 5 operator member 70 includes ends 71 and 72 end 71 is pivotally attached to locking bar 55 end 72 extends in the opposite direction to a point above an opening 73 provided through base member 53 where end 72 of operator 70 is pivotally connected to a button lever 74 fig5 button lever 74 extends downwardly through opening 73 and is pivotally attached at a pivot point 77 to a push button housing 76 which houses a spring biased push button 78 push button housing 76 is mounted through an opening in base member 53 located at the end thereof opposite retractor 34 a helical spring 79 biases push button 78 in an up position when push button 78 is manually depressed as shown in fig5 button 78 contacts button.