| 摘要 |
<p>This invention relates to a device, which offers a person the convenience of tearing off with one hand any length of a flexible sheet material, typically toilet pape r or kitchen towel, from a roll at a line of weakness (perforation) in the sheet. The device consists of two main parts: a stable "cradle" and a movable "pallet." The cradle is made up of a back plate whereby it is fastened to a solid surface, two side plates between the roll is held, possibly a bottom plate on which (with the most practical embodiment of the invention) the roll rests, and a "lower jaw bar." The pallet is rotatably attached to t he side plates of the cradle. It has two cross bars: the "upper jaw bar" and the "press bar." In preparing for use, the free end of the sheet material is passed through the gap between th e upper jaw bar and the press bar of the pallet in such a way that the upper jaw bar lie s above and the press bar below the sheet; then the roll is installed in the cradle. Pulling the free end of the sheet away from the roll will cause the upper jaw bar to lift away from the lower jaw bar, thus any length of the sheet material can be freely unwound from the roll. By shifting the direction of the pull toward the lower jaw bar, the pressure on the pres s bar will force the upper jaw bar against the lower jaw bar, and thus prevent further materi al from unwinding from the roll. Increasing the pull, any length of the material outside the press bar can be separated from the roll along a line of weakness in the sheet.</S DOAB></p> |
