Safety belt reel

Claim 1

A SAFETY BELT MECHANISM COMPRISING: A RECEPTACLE UNIT POSITIONED NEAR THE INTERSECTION OF THE BACK AND BOTTOM OF THE SEAT; TWO STRAPS ATTACHED TO SAID RECEPTACLE UNIT; MEANS TO CONNECT ONE OF SAID STRAPS TO A STURDY ANCHOR BENEATH AND BEHIND SEAT; A THIRD STRAP; MEANS TO CONNECT THE SECOND STRAP ATTACHED TO SAID RECEPTACLE UNIT TO SAID THIRD STRAP; MEANS TO CONNECT SAID THIRD STRAP TO A STURDY ANCHOR BENEATH AND BEHIND SEAT; SAID RECEPTACLE UNIT COMPRISING A HOUSING; A TWO-PIECE, MOVEABLE BRACKET SUPPORTED BY SAID HOUSING; SAID BRACKET HAVING CYLINDRICAL PROJECTIONS ADAPTED FOR CONNECTION TO SAID HOUSING IN SUCH A MANNER AS TO PERMIT A ROTATIONAL MOTION OF SAID BRACKET WITH RESPECT TO SAID HOUSING, SAID ROTATIONAL MOTION BEING AROUND AN AXIS COMMON WITH THE AXIS OF SAID CYLINDRICAL PROJECTIONS; SAID BRACKET HAVING TWO CYLINDRICAL CAVITIES WITH A COMMON AXIS, SAID COMMON AXIS OF SAID CYLINDRICAL CAVITIES BEING PARALLEL BUT DIFFERENT THAN SAID COMMON AXIS OF SAID CYLINDRICAL PROJECTIONS; A CYLINDRICALLY-ENDED SHAFT INSERTED INTO SAID CYLINDRICAL CAVITIES AND SAID SECOND STRAP BEING WOUND UPON SAID SHAFT AND EXTENDING THROUGH AN OPENING IN SAID HOUSING; RESILIENT MEANS RESTRICTING ONE DIRECTION AND ENCOURAGING THE OTHER DIRECTION OF ROTATION OF SAID SHAFT AXIS AROUND SAID COMMON AXIS OF SAID CYLINDRICAL PROJECTIONS; RESILIENT MEANS RESTRICTING FREE ROTATION OF SAID SHAFT WITH RESPECT TO SAID BRACKET AND SAID RESILIENT MEANS FURNISHING A TORSIONAL FORCE EFFECT ON SAID SHAFT TENDING TO WIND SAID SECOND STRAP UPON SAID SHAFT; LOCKING MEANS PREVENTING THE MOVEMENT OF SAID SECOND STRAP WITH RESPECT TO SAID HOUSING WHEN SAID SECOND STRAP IS BEING SUBJECTED TO A FORCE TENDING TO PULL SAID SECOND STRAP FROM SAID HOUSING, SAID FORCE HAVING A MAGNITUDE EQUAL TO OR GREATER THAN A PREDETERMINED MAGNITUDE, SAID PREDETERMINED MAGNITUDE OF FORCE BEING SUBSTANTIALLY DEPENDENT ON THE DEMENSIONS, FRICTIONAL FORCES AND RESILIENT MEANS OF SAID RECEPTACLE UNIT WHERE THE SAID PREDETERMINED MAGNITUDE OF FORCE IS OF SUCH A VALUE AS TO PERMIT THE OPERATION OF SAID RECEPTACLE UNIT WITHOUT LOCKING WHEN BEING USED IN THE NORMAL MANNER.