PURPOSE: To clamp a nut side easily by providing each of the inner and the outer surface of a metal fitting with a pin which projects outward and a square hole which pierces through inward from the metal fitting, and providing a mounting stay with a square hole and a guide hole in the positions corresponding to the pin and the square hole.
CONSTITUTION: When a tire 1 of the side of a rim 2 is mounted onto the side of a disk 8 fixed to a jacked up vehicle, a pin 9 projecting from the inner mounting surface 3 of metal fittings 5, 5... or from an outer metal fitting 4 is inserted into a guide hole 12 in mounting stays 7, 7..., square holes 10 and 11 of the mounting stay 7 and the mounting fixture 5 agree each other. These two holes stay in the position without separating from each other by simply supporting them manually, and a clamping bolt can be inserted by one person. Use of a cup square neck bolt 13 as the clamping bolt allows the nut side to be clamped easily and firmly because the square neck portion is engaged with a square holes, either 10 or 11.
MATSUOKA MINORU
IWANAGA KENJI
MIYAUCHI YASUHIRO
IMAI YUKINORI
