초록 ▼

A belt abrading device including a pair of laterally spaced rollers over which an elongate endless abrasive belt is trained. One of the rollers is mounted for shifting toward and away from the other. An exhaust hood is disposed adjacent the movable roller for shifting toward and away from the roller

A belt abrading device including a pair of laterally spaced rollers over which an elongate endless abrasive belt is trained. One of the rollers is mounted for shifting toward and away from the other. An exhaust hood is disposed adjacent the movable roller for shifting toward and away from the roller and the belt trained thereover. The exhaust hood is mounted on a lever arm which is operatively connected to a motor for shifting the hood toward and away from the roller. A sensor is provided for sensing continuity of the belt. Under usual operating conditions, the motor maintains the exhaust hood a preselected distance from the roller. Should the belt break and the sensor sense such discontinuity, or when desired by the operator, the motor is operated to shift the hood away from the roller.

대표청구항 ▼

In combination with a flexible belt abrader including an endless belt having an abrasive material-removing outer face and a pair of spaced rollers over which said belt is trained, roller mounting means on which one of said rollers is mounted for shifting in one direction away from the other of said

In combination with a flexible belt abrader including an endless belt having an abrasive material-removing outer face and a pair of spaced rollers over which said belt is trained, roller mounting means on which one of said rollers is mounted for shifting in one direction away from the other of said rollers and in another direction toward the other roller, an exhaust hood disposed adjacent said one roller and spaced outwardly in said one direction therefrom, for providing a suction adjacent such outer face, hood mounting means operatively connected to said hood including motor means operable in one operating mode to maintain said hood, under usual operating conditions, a preselected distance from said one roller and, in a second operating mode, to move said hood under power in said one direction away from said one roller, sensing means for sensing belt continuity, and control means operatively interconnecting said motor means and said sensing means to actuate said motor means to shift said hood away from said one roller upon said sensing means detecting discontinuity in said belt.