Trailing nozzle device for fast paper feeders

A tractor nozzle device for a fast running sheet feeder, said tractor nozzle device comprising:

• a front rocker supported at an upper end by a first support shaft for oscillating motion;
• a first cam roller carrier by said front rocker
• a first cam plate supported on a rotatable drive shaft, said first cam plate being in contact with said first cam roller;
• a support bridge having a front end which is connected to a lower end of said front rocker;
• a support device for a rear end of said support bridge, said support device including a rear rocker supported at an upper end by a second support shaft and having a lower end connected to a rear portion of said support bridge by a rubber-metal bushing and permitting back and forth oscillating movement of said support bridge;
• a second cam roller carried by said rear rocker;
• a second cam plate supported on said rotatable drive shaft, said second cam plate being in contact with said second cam roller;
• spaced traction aspirators seated on a cross bar, said cross bar being pivotably seated in said lower end of said front rocker by a rubber-metal bushing;
• and
• means for performing a deflection movement of said cross bar and said traction aspirators by causing said rear portion of said support bridge to move in a direction generally crosswise to said back and forth movement of said support bridge, said rubber-metal bushings facilitating said back and forth movement and said deflection movement of said support bridge and said support device.