| http://www.w3.org/ns/prov#value | - d apart parallel arms, a vibrator roller, means for rotating the vibrator roller and connections including a connecting rod between the crank pin and the vibrator roller for axially vibrating the vibrator roller, the greater the distance which the axis of the crank pin is otfset from the axis of the driven rotary member the greater is the amplitude of vibration of the vibrator roller. 2.
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