guide pins 102 and 104 project through holes in spring plate 94 a series of springs 106 107 surrounding pipe nipples 90 91 and a series of springs 108 109 surrounding pins 102 and 104 urge spring plate 94 upward against washer sets 110 111 that surround pipe nipples 90 91 at the base of male coupler halves 86 88 the washers 110 111 and springs 106 107 108 109 act together to prevent relative axial movement between the male coupler halves 86 88 and spring plate 94 upward movement of the spring plates and coupler halves is limited by contact of elbows 92 93 with the bottom surface of attachment plate 100 spring pairs 106 107 and 108 109 allow downward axial movement of the coupler halves and spring plate 94 transverse movement of the coupler halves is limited by interaction of the guide pins 102 104 and the pipe nipples 90 91 with spring plate 94 accordingly spring plate 94 serves to keep the coupler halves 86 88 in a fixed transverse position relative to pins 102 and 104 assembly 40 is fixed to the three point hitch by attachment plate 100 which can be bolted to cross bar 38 see fig1 in any manner that will align guide pins 102 and 104 along the principle axis of coupling motion and prevent.