Liner lock key for tumbler liner segments

A retaining pin for use in a cylindrical tumbling unit to force a tight interfit between neighboring segments of the tumbling unit;

• said neighboring segments each having an side edge, a groove formed in said edge, and a vane on an outer surface of said segments and extending to said outer cylinder;
• the grooves of neighboring segments defining a channel;
• said retaining pin including a body having side surfaces, a top surface, and a bottom surface;
• at least one hole in said pin body extending through said pin body from one side of said pin body to another side of said pin body and at least one dowel received in said at least one hole and sized to extend through said hole and beyond the sides of said body, said at least one dowel being shaped and sized to be received in the grooves of neighboring segments;
• and an arm extending upwardly from said pin body top surface;
• said pin separating neighboring liner segments, said pin arm conforming in shape to, and being in alignment with, the vanes of the neighboring segments, to form a continuous vane on said liner.

A tumbling unit such as a casting shake-out unit, rotary media drum, sand reclaimer or the like, the tumbling unit comprising:

• a cylindrical outer shell having pins fixed to an inner surface of said outer shell and extending inwardly from said outer shell inner surface;
• a cylindrical liner positioned within said outer shell, said liner being formed of a series of interfitting segments, said segments having an inner surface, an outer surface, side edges, a front edge, a back edge, and a vane extending from said outer surface;
• at least one hole formed in an outer surface of said vane;
• said outer shell pins being received in said at least one hole of said vane.

A tumbling unit such as a casting shake-out unit, rotary medium drum, sand reclaimer, or the like, the tumbling unit comprising:

• a cylindrical outer shell;
• a cylindrical liner position within said outer shell, said liner being formed of a series of interfitting segments, said segments having an inner surface, an outer surface, side edges, a front edge, a back edge, and a vane extending from said segment outer surface;
• flanges extending from opposite edges of said segments;
• the flanges of one segment being proximate to flanges of an adjacent segment;
• said flanges of adjacent segments being adapted to be secured together;
• said flanges including at least one hole extending therethrough and fastening means;
• the fastening means of one segment extending through the at least one hole of an adjacent segment to secure said liner segments together.

A tumbling unit such as a casting shake-out unit, a rotary medium drum, sand reclaimer, or the like, the tumbling unit comprising:

• a cylindrical outer shell;
• a cylindrical liner positioned within said outer shell, said liner being formed of a series of interfitting segments, said segments having an inner surface, and outer surface, side edges, a front edge, a back edge, and a vane extending from said segment outer surface;
• flanges extending from opposite edges of said segments;
• the flanges of one segment being proximate to flanges of an adjacent segment;
• said flanges of adjacent segments being adapted to be secured together;
• said segments including at least one hole formed in and outer surface of said vane;
• said tumbling unit including pins which are fixed to said outer cylinder and extend into said at least one hole in said vane of each said segment.