Overhead stretch film wrap machines, including overhead stretch film wrap machines with film pre-stretch devices

Apparatus for wrapping a load with selected ones of stretched and prestretched films, the apparatus comprising:

• a rotatable arm having first and second opposed ends;
• pivot means defining a pivot point on said rotatable arm intermediate said first and second ends for mounting said rotatable arm facing a location for wrapping said load;
• motor means for rotating said rotatable arm around said pivot point in a selected one of clockwise and counterclockwise directions;
• control means responsive to said motor means for controlling said rotation of said rotatable arm to a selected rate of rotation;
• first and second parallel support arms perpendicular to said rotatable arm and mounted on said first and second ends, respectively, so as to encompass said location therebetween;
• first and second carriage means mounted for movement along said first and second support arms, respectively, said first carriage means including first film dispensing means for dispensing a first film having a first width and said second carriage means including second film dispensing means for dispensing a second film having a second width;
• first and second drive means for independently moving said first and second carriage means along said first and second support arms, respectively;
• and
• movable gantry means for positioning said pivot point over said location with said load thereat, said gantry means including conveyor means for placing said load substantially under said pivot point.