Rotary detreader tool

Claim 2

A detreader tool for use with a tire-buffing machine to remove all tread impressions from a tire carcass, comprising a disk body having a bore formed through its center section for receiving a shaft extending along its axis, a plurality of cutter members disposed around the outer periphery of said disk body, each of said cutter members having a blade projecting beyond the outer margin of said disk body, each of said blades having a cutting edge facing the two directions of rotation of said disk body.

Claim 3

A detreader tool as defined in claim 1 wherein, each of said cutter members are pivotally mounted to said disk body such that the cutting edge of said blades facing the direction of rotation of said disk body upon contacting the crown portion of the tire carcass moves away from, and the opposite cutting edge of said blade surface moves towards said outer periphery of said disk body, and means for stopping the pivotal movement of each of said cutter members at an offcenter position on either side of the Radial line of said disk body extending through the pivot point of each cutter member.

Claim 4

A detreader tool as defined in claim 2, further comprising locking means for releasably holding each of said cutter members in either of said offcenter positions.

Claim 5

A detreader tool as defined in claim 3, wherein said locking means comprises a locking element having a pointed end carried by each of said cutter members and a plurality of pairs of detent elements disposed around said disk body, each pair of said detent elements cooperating with one of said locking elements to engage its pointed end when said blade member moves to one of said offcenter positions and spring means for biasing said locking elements and said detent elements into a locking relationship.

Claim 6

A detreader tool for use with a tire-buffing machine to remove all tread impressions from a tire carcass comprising a cylindrical drum having a bore formed along its axial center for receiving a shaft to rotate the detreader tool and having circular flanges secured to its opposite ends, a plurality of cutter members disposed around and pivotally connected between said flanges adjacent their outer edges, each of said cutter members having a blade projecting beyond the outer margin of said circular flanges and adapted to swing about said pivotal connection, each of said blades having a cutting edge facing both directions of rotation of said drum, and means for stopping the pivotal movement of each of said cutter members at an offcenter position on either side of the radial line of said drum extending through the pivot point of each cutter member.

Claim 7

A detreader tool for use with a tire-buffing machine to remove all tread impressions from a tire carcass comprising a cylindrical drum having a bore formed along its axial center for receiving a shaft to rotate the detreader tool and having circular flanges secured to its opposite ends, a plurality of cutter members disposed around and pivotally connected between said flanges adjacent their outer edges, each of said cutter members having a blade projecting beyond the outer margin of said circular flanges and adapted to swing about said pivotal connection, each of said blades having a cutting edge facing both directions of rotation of said drum, and means for stopping the pivotal movement of each of said cutter members at an offcenter position on either side of the radial line of said drum extending through the pivot point of each cutter member.

Claim 8

The detreader tool as defined in claim 5, wherein said stopping means comprises a series of recesses formed in the peripheral surfaces of each of said flanges of the same number as said cutter members in radial alignment with each of said pivotal connections and a stud extending from opposite ends of said cutter members and adapted to move in the corresponding recesses of said flanges as its cutter member pivots, whereby the pivotal movement of each cutter member is stopped when said studs strike the one of the ends of the recess in which it is located.

Claim 9

A detreader tool as defined in claim 5, wherein each of said blades includes a plurality of blade elements removably fastened to the outer end of said cutter member, each of said blade elements having a cutting edge facing both directions of rotation.