| 摘要 |
<p>A dispenser is disclosed for retaining and dispensing plastic bags which are wound on a core. The dispenser is made of heavy metal wire configured to provide curved tracks in which a core can ride. The dispenser includes a separating tongue which enables a customer to dispense the bags one by one by pulling on the free end of the outermost bag. In order to prevent freewheeling, a braking surface is provided which engages the roll and retards rotation. A supplemental braking force is provided by spring elements mounted within the tracks which apply a frictional force to the ends of core. The spring elements are oriented such that the force applied to the core by the springs as the roll rotates when the bags are dispensed, causes the roll to tend to move downwardly into engagement with the braking surface. The spring elements are attached to the dispenser at a point below the braking surface. As a result, the braking force applied by the springs increases as the size of the roll decreases.</p> |
