We claim the ornamental design for a tension adjustment lock-out device for a conveyor belt cleaner, as shown and described.
FIG. 1 is a perspective view of a tension adjustment lock-out device for a conveyor belt cleaner, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view of the tension adjustment lock-out device for a conveyor belt cleaner of FIGS. 1-7 shown in its environment of use on a tension adjustment device of a conveyor belt cleaner.
The broken lines of FIG. 8 are for illustrative purposes only and form no part of the claimed design.