To reliably fix a posture and an engaging position with a grip to suspend a chemical vessel and a cage in an automatic dyeing device.

Inverse trapezoidal recessed parts 23 are formed on the upper edge of opposed two side walls 22a of a vessel 22. Legs 21b and 21b to suspend a sample cage are formed in a π shape on the upper side 21a of a grip 21. Vertical surfaces 21c and inclined faces 21d are formed on base part outside surfaces of the respective legs 21b. An interval (a) of both vertical surfaces 21c is set so that the vertical surfaces 21c can be freely slidable while being brought into close contact with inside surfaces of both side walls 22a of the vessel. A width (c) of both end parts of the upper side 21a whose under surface 21f is made flat, is formed in the size of immovably engaging with an under surface of a width (d) of the recessed part 23.